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  <doc>
    <id>45922</id>
    <completedYear/>
    <publishedYear>2018</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>170</pageFirst>
    <pageLast>180</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>189</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Ternary mix design of grout material for structural repair using statistical tools</title>
    <abstract language="eng">Repair is an indispensable part of the maintenance of structures over their lifetimes. Structural grouting is a widely used remediation technique for concrete components, trenches, mine subsidence, dam joints, restoration of masonry structures, and geological stabilizations. A structural grout system should be injectable in narrow spaces and hence include ingredients with finer particles. Ultrafine cements are ideal for these type of demanding grouts due to their superior properties compared to that of the less expensive, but coarser ordinary Portland cement (OPC). Supplementary cementitious materials (SCMs) are often used to replace OPC clinker based binder in order to modify certain properties and to reduce costs. The most commonly used SCMs are fly ash (FA), and ground granulated blast furnace slag (GGBS). For various special applications microsilica (MS), and metakaolin (MK) are also used. Identifying the optimum replacement contents of OPC by SCMs are a challenge during the design of such grouts. The aim of this experimental study is to investigate the effect of the selected SCMs (FA, MS and MK) on the slump flow, time of efflux, viscosity, shrinkage, and compressive and flexural strength of ultrafine cement based grouts with constant water-binder ratio and superplasticizer content. The test program was formulated using Box-Behnken design principles. Maximum percentages of replacement with ultrafine cement was 6% by volume of cement for MS and 16% for FA, and MK. The results suggest that most investigated grouts have the potential to be used for structural applications. The appropriate quadratic models are then formulated through statistical tools and presented as response surfaces. The trends indicate that fly ash improves the rheological properties, whereas microsilica and metakaolin positively affect shrinkage and mechanical properties to some extent. Based on the influence of SCMs and priorities among the properties, Decision Matrix Analysis (DMA) is carried out to select the most suitable ones among the SCMs. The analysis suggests that microsilica and fly ash are more suitable as SCMs than metakaolin without affecting the properties.</abstract>
    <parentTitle language="eng">Construction and Building Materials</parentTitle>
    <identifier type="doi">10.1016/j.conbuildmat.2018.08.156</identifier>
    <identifier type="issn">0950-0618</identifier>
    <identifier type="issn">1879-0526</identifier>
    <enrichment key="date_peer_review">22.11.2018</enrichment>
    <author>Md Shamsuddoha</author>
    <author>Götz Hüsken</author>
    <author>Wolfram Schmidt</author>
    <author>Hans-Carsten Kühne</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grouting</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microsilica</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fly ash</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Metakaolin</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Workability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Viscosity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Strength</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mix design</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Box-Behnken</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Decision matrix analysis</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>48712</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>9</pageFirst>
    <pageLast>15</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>4</volume>
    <type>article</type>
    <publisherName>RILEM Publications SARL</publisherName>
    <publisherPlace>4 avenue du Recteur Poincaré, 75016 Paris, France</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Long-term mechanical and shrinkage properties of cementitious grouts for structural repair</title>
    <abstract language="eng">Grouts have numerous applications in construction industry such as joint sealing, structural repair, and connections in precast elements. They are particularly favoured in rehabilitation of structures due to penetrability and convenience of application. Grouts for repair applications typically require high-performance properties such as rapid strength development and superior shrinkage characteristics. Sometimes industrial by-products referred as supplementary cementitious materials (SCM) are used with neat cement due to their capabilities to provide binding properties at delayed stage. Micro silica, fly ash and metakaolin are such SCMs, those can modify and improve properties of cement products. This study aims at investigating long-term mass loss and linear shrinkage along with long-term compressive and flexural strength for grouts produced from ultrafine cement and SCMs. A series of mixtures were formulated to observe the effect of SCMs on these grout properties. Properties were determined after 365 days of curing at 23oC and 55% relative humidity. The effect of SCMs on the properties are characterised by statistical models. Response surfaces were constructed to quantify these properties in relation to SCMs replacement. The results suggested that shrinkage was reduced by metakaolin, while micro silica and fly ash had positive effects on compressive and flexural strength, respectively.</abstract>
    <parentTitle language="eng">RILEM Technical Letters</parentTitle>
    <identifier type="doi">10.21809/rilemtechlett.2019.82</identifier>
    <identifier type="issn">2518-0231</identifier>
    <enrichment key="eventName">International Conference on Sustainable Materials, Systems and Structures (SMSS 2019)</enrichment>
    <enrichment key="eventPlace">Rovinj, Croatia</enrichment>
    <enrichment key="eventStart">20.03.2019</enrichment>
    <enrichment key="eventEnd">22.03.2019</enrichment>
    <author>Md Shamsuddoha</author>
    <author>Götz Hüsken</author>
    <author>Wolfram Schmidt</author>
    <author>Hans-Carsten Kühne</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grout</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Long-term shrinkage</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Micro silica</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fly ash</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Metakaolin</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>47831</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>Article Number 01001</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>278</volume>
    <type>conferenceobject</type>
    <publisherName>EDP Sciences</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Superplasticizer and Shrinkage Reducing Admixture Dosages for Microfine Cement in Grout Systems</title>
    <abstract language="eng">Grouts have numerous applications including crack repair as maintenance in construction industries. Microfine cements are intensively used for high strength mortar and grout products. They are ideal for injection grouting in structural repair. Such grouts should have suitable rheological properties to be injectable, especially those used in repair and rehabilitation. The use of superplasticizers (SP) in these products is thus becoming increasingly crucial to achieve favorable workability and viscosity properties. A difficulty in such grouts is the plastic shrinkage due to finer particles used. It is thus necessary to determine optimum SP and shrinkage reducing admixture (SRA) dosages for a microfine cement based grout. In this study, a saturation dosage was decided from two Polycarboxylate ether (PCE) based SPs in relation to neat cement using slump flow and rheological parameters. A range of grout mixtures was formulated containing micro silica (MS) and fly ash (FA), and tested for suitable rheological and mechanical parameters. Based on the results, a grout mixture with MS and FA was selected to determine optimum SRA content. According to the results, a SP dosage of 3% by weight of neat cement is sufficient to achieve saturation. The grout material including MS and FA can produce comparable properties to neat cement grout. MS is found to improve compressive strength within the range considered, whereas a higher FA content provides favourable rheological properties. Finally, a SRA dosage of 4%, which could reduce the shrinkage by about 43% after 28d days, is determined for the grout system.</abstract>
    <parentTitle language="eng">MATEC Web of Conferences</parentTitle>
    <identifier type="doi">10.1051/matecconf/201927801001</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-478319</identifier>
    <enrichment key="eventName">2nd International Conference on Building Materials and Materials Engineering (ICBMM 2018)</enrichment>
    <enrichment key="eventPlace">University of Lisbon, Portugal</enrichment>
    <enrichment key="eventStart">26.09.2018</enrichment>
    <enrichment key="eventEnd">28.09.2018</enrichment>
    <enrichment key="date_peer_review">12.10.2020</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Md Shamsuddoha</author>
    <author>Götz Hüsken</author>
    <author>Wolfram Schmidt</author>
    <author>Hans-Carsten Kühne</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grout</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microfine Cement</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Superplasticizer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Supplementary Cementitious Materials</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Shrinkage Reducing Admixture</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/47831/Shamsuddoha et al. - MATEC Web Conf. 278_01001.pdf</file>
  </doc>
  <doc>
    <id>46476</id>
    <completedYear/>
    <publishedYear>2018</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>07006-1</pageFirst>
    <pageLast>07006-7</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>199</volume>
    <type>conferenceobject</type>
    <publisherName>MATEC Web of Conferences</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Workability and mechanical properties of ultrafine cement based grout for structural rehabilitation: A parametric study on the partial replacement with SCMs</title>
    <abstract language="eng">Grouting is a universal repair and strengthening technique, which is constantly used for structural remediation of concrete components, trenches, mine subsidence, dam joints, restoration of masonry structures, and geological stabilizations. Having an extremely small particle size of only few microns, ultrafine cements are ideal for grouting applications due to their superior permeability and compressive strength properties of the hardened cement paste compared to that of the less-expensive, but coarser ordinary Portland cements. Supplementary cementitious materials (SCMs) are often used to replace ultrafine cement in order to modify certain properties and to reduce costs. The aim of this experimental study is to investigate the effect of three supplementary materials: microsilica (MS), fly ash (FA), and metakaolin (MK) on the workability, and mechanical properties of an ultrafine cement based grout with a constant water-binder ratio and constant superplasticizer content. Maximum percentages of replacement with ultrafine cement were 6% by volume of cement for MS and 16% for FA, and MK. In general, results suggest that the workability is improved by addition of FA, whereas is reduced, when modified with MS and MK. The compressive strength of grout after cement replacement remains comparable to that of pure cement grout. However, there is a tendency of the MS to positively affect the compressive strength opposite to FA, whereas flexural strength is positively affected by FA. Based on the results, it is evident that grouts with Hägerman cone flow more than 500 mm and compressive strength of more than 90 MPa after 28 days can be produced.</abstract>
    <parentTitle language="eng">Proceedings of the International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2018)</parentTitle>
    <identifier type="doi">10.1051/matecconf/201819907006</identifier>
    <identifier type="issn">2261-236X</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-464769</identifier>
    <enrichment key="eventName">International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2018)</enrichment>
    <enrichment key="eventPlace">Cape Town, South Africa</enrichment>
    <enrichment key="eventStart">19.11.2018</enrichment>
    <enrichment key="eventEnd">21.11.2018</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Md Shamsuddoha</author>
    <author>Götz Hüsken</author>
    <author>Wolfram Schmidt</author>
    <author>Hans-Carsten Kühne</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grouting</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Repair</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Box-Behnken</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Supplementary cementitious materials</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Analysis of variance</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/46476/Shamsuddoha et al. - Workability and mechanical properties of ultrafine cement based grout for structural rehabilitation.pdf</file>
  </doc>
  <doc>
    <id>47751</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Vorstellung des Aktivitätsfelds Erneuerbare Energie</title>
    <abstract language="deu">Auf der Beiratssitzung des TF Energie wurde das Aktivitätsfeld Erneuerbare Energien in seinem breiten Spektrum (aber selektive Auswahl) vorgestellt.</abstract>
    <enrichment key="eventName">Beiratssitzung TF Energie</enrichment>
    <enrichment key="eventPlace">BAM Berlin-Adlershof, Germany</enrichment>
    <enrichment key="eventStart">09.04.2019</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Matthias Baeßler</author>
    <author>Martin Babutzka</author>
    <author>Volker Trappe</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Erneuerbare Energien</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Windenergie</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>48444</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>Article Number:  UNSP V001T10A013</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>2019</volume>
    <type>conferenceobject</type>
    <publisherName>ASME</publisherName>
    <publisherPlace>Glasgow, Scotland</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">An enhanced interface model for friction fatigue problems of axially loaded piles</title>
    <abstract language="eng">The shaft bearing capacity often plays a dominant role for the overall structural behaviour of axially loaded piles in offshore deep foundations. Under cyclic loading, a narrow zone of soil at the pile-soil interface is subject to cyclic shearing solicitations. Thereby, the soil may densify and lead to a decrease of confining stress around the pile due to microphenomena such as particle crushing, migration and rearrangement. This reduction of radial stress has a direct impact on the shaft capacity, potentially leading in extreme cases to pile failure. An adequate interface model is needed in order to model this behaviour numerically. Different authors have proposed models that take typical Interface phenomena in account such as densification, grain breakage, normal pressure effect and roughness. However, as the models become more complex, a great number of material parameters need to be defined and calibrated. This paper proposes the adoption and transformation of an existing soil bulk model (Pastor- Zienkiewicz) into an interface model. To calibrate the new interface model, the results of an experimental campaign with the ring shear device under cyclic loading conditions are here presented. The constitutive model shows a good capability to reproduce typical features of sand behaviour such as cyclic compaction and dilatancy, which in saturated partially-drained conditions may lead to liquefaction and cyclic mobility phenomena.</abstract>
    <parentTitle language="eng">OMAE 2019</parentTitle>
    <enrichment key="eventName">Conference: OMAE</enrichment>
    <enrichment key="eventPlace">Glasgow, Scotland, UK</enrichment>
    <enrichment key="eventStart">09.06.2019</enrichment>
    <enrichment key="eventEnd">14.06.2019</enrichment>
    <enrichment key="date_peer_review">05.03.2020</enrichment>
    <author>Borana Kullolli</author>
    <author>Matthias Baeßler</author>
    <author>Pablo Cuéllar</author>
    <author>S. Rica</author>
    <author>F. Rackwitz</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Soil-structure interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Interface</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>48505</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2178</pageFirst>
    <pageLast>2184</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>II</volume>
    <type>conferenceobject</type>
    <publisherName>International Society of Offshore and Polar Engineers (ISOPE)</publisherName>
    <publisherPlace>Cupertino, California, USA</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Compaction grouting to improve the pile bearing capacity in non-cohesive soil</title>
    <abstract language="eng">The aim of an ongoing research project is to develop a design approach for typical offshore driven piles (e.g. Jacket piles) based on the application of injections by compaction grouting directly at the pile shaft. The paper aims to present the results of laboratory and in-situ tests, which reveal the efficiency and the promising potential of the optimised foundation concept for a more economic dimensioning of pile foundations and to increase their bearing capacity in non-cohesive soil at any moment after installation.</abstract>
    <parentTitle language="eng">Proceedings of the Twenty-ninth (2019) International Ocean and Polar Engineering Conference</parentTitle>
    <identifier type="isbn">978-1-880653-85-2</identifier>
    <identifier type="issn">1098-6189</identifier>
    <enrichment key="eventName">Twenty-ninth International Ocean and Polar Engineering Conference</enrichment>
    <enrichment key="eventPlace">Honolulu, HI, USA</enrichment>
    <enrichment key="eventStart">16.06.2019</enrichment>
    <enrichment key="eventEnd">21.06.2019</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Peter Geißler</author>
    <author>Johannes Schwarz</author>
    <author>Pablo Cuéllar</author>
    <author>Götz Hüsken</author>
    <author>Matthias Baeßler</author>
    <author>Hans-Carsten Kühne</author>
    <author>C. Morrone</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore Pile Foundation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Compaction Grouting</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grout</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Injection Sequence</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Tensile Capacity</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>48796</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>Th.2.A.1-1</pageFirst>
    <pageLast>Th.2.A.1-9</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Comparison of cracks formed in scaled grouted connection of offshore energy structures under static and cyclic loads</title>
    <abstract language="eng">Global energy consumption will increase in the future necessitating both fossil fuels and renewable energy choices - especially wind energy. Such high energy demand requires installation of offshore energy structures, rigs, platforms and towers, which are susceptible to adverse environmental conditions along with maintenances. Due to their large size and remote locations, cylindrical grouted joints are often adopted between substructure and foundation in these offshore platforms and wind structures such as monopiles. However, these connections are composite structures with exterior sleeve, interior pile and infill mortar. Degradation and settlements were reported inside similar connections, which were installed in last three decades. Besides, grouting in the offshore sites were proven difficult to obtain ideal load bearing capacity. In-situ loading conditions were also found to be affecting the failure mechanism inside such connections. This study aims at characterizing the nature of cracks generated in these grouted connections under both static and cyclic loading. Scaled grouted joints were manufactured using a novel reusable mold, and connections were loaded to failure to visualize the main failure patterns. An assessment between failure under these two types of load is drawn along with comparison to previously available literature.</abstract>
    <parentTitle language="eng">Proceedings of SMAR 2019</parentTitle>
    <identifier type="urn">urn:nbn:de:kobv:b43-487961</identifier>
    <enrichment key="eventName">5th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures</enrichment>
    <enrichment key="eventPlace">Potsdam, Germany</enrichment>
    <enrichment key="eventStart">27.08.2019</enrichment>
    <enrichment key="eventEnd">29.08.2019</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Götz Hüsken</author>
    <author>Md Shamsuddoha</author>
    <author>Marc Thiele</author>
    <author>Matthias Baeßler</author>
    <author>Hans-Carsten Kühne</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grouted connection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Crack formation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Crack pattern</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Static load</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic load</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/48796/Huesken_et_al-SMAR2019.pdf</file>
  </doc>
  <doc>
    <id>48909</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>13007</pageFirst>
    <pageLast>13013</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>92</volume>
    <type>conferenceobject</type>
    <publisherName>EDP Sciences</publisherName>
    <publisherPlace>Glasgow, Scotland</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Modelling and calibration for cyclic soil-structure interface behaviour</title>
    <abstract language="eng">The structural performance of many geotechnical systems (e.g. axially-loaded pile foundations), depends on the shearing resistance at the soil interface, which may govern the load bearing capacity of the foundation. Experimental investigations have shown that this interaction is mainly localised within a narrow shear band next to the structure. Under cyclic loading, a contraction of the soil at the interface may arise (net volume loss), possibly leading to a stress relaxation and thus to a reduction of the load bearing capacity (the so-called friction fatigue). Based on the constitutive similarities between soil continua and interfaces, we propose here the adaption of a Generalized Plasticity model for sandy soils for the numerical analysis of interface problems. In this contribution, the results of an experimental campaign for the parameter calibration of the constitutive model are presented. The tests have been conducted with a ring shear device involving different normal stresses, roughness of the steel plates as well as cyclic loading. The new modelling approach shows promising results and has the additional practical advantage that the interface zone and the soil continuum can both be described with the same constitutive model in general boundary value problems.</abstract>
    <identifier type="doi">10.1051/e3sconf/20199213007</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-489096</identifier>
    <enrichment key="eventName">Konferenz 7th International Symposium on Deformation Characteristics of Geomaterials</enrichment>
    <enrichment key="eventPlace">Glasgow, Scotland</enrichment>
    <enrichment key="eventStart">26.06.2019</enrichment>
    <enrichment key="eventEnd">28.06.2019</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Borana Kullolli</author>
    <author>Pablo Cuéllar</author>
    <author>Matthias Baeßler</author>
    <author>H. H. Stutz</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Soil-structure interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore foundations</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/48909/e3sconf_isg2019_13007.pdf</file>
  </doc>
  <doc>
    <id>49162</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Stability and large deformations of slender structures supported by soil materials</title>
    <abstract language="eng">Stabilitätsprobleme und große Deformationen schlanker, vorwiegend stahlbaulicher Strukturen sind in einigen Fällen stark von der Belastung und Stützung der Struktur durch den Baugrund abhängig. Der Vortrag verbindet Forschungsansätze zum Thema.</abstract>
    <enrichment key="eventName">Colloquium on Geotechnical Engineering</enrichment>
    <enrichment key="eventPlace">KIT Karlsruhe, Germany</enrichment>
    <enrichment key="eventStart">26.09.2019</enrichment>
    <enrichment key="eventEnd">27.09.2019</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Stability Buckling soil-structure-interaction piles offshore</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
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