TY - CONF A1 - Miccoli, Lorenzo A1 - Fontana, Patrick A1 - Silva, N. A1 - Klinge, A. A1 - Cederqvist, C. A1 - Kreft, O. A1 - Qvaeschning, D. A1 - Sjöström, C. T1 - Composite UHPC-AAC/CLC facade elements with modified interior plaster for new buildings and refurbishment N2 - The awareness of the environmental impact of the building sector is increasing. Steel reinforced concrete is the most commonly used construction material, though with a high-embodied energy and carbon footprint. Large environmental gains may arise if an alternative to steel reinforced concrete is developed. In this context, ultra-high performance concrete (UHPC) materials are shown to be promising alternatives with advantages such as lower embodied energy and reduced environmental impact. Predictions suggest that UHPC composite elements for building envelopes could have other benefits such as an increased service life, optimised use of building area due to thinner elements and minimised maintenance due to the absence of reinforcement or use of non-corrosive reinforcing materials such as carbon fibres. In the framework of the H-HOUSE project funded by the European Commission, composite elements are developed. The aim is to create facade panels combining an autoclaved aerated concrete or cellular lightweight concrete insulation layer with an external UHPC supporting layer. To enhance occupant comfort and health, hygroscopic materials that are capable to buffer indoor air humidity shall be applied to the inside of such elements. Indoor air humidity levels are expected to be more stable, which shall subsequently improve the indoor climate and minimise potential decay to the construction. T2 - ICAE 2015 - 7th International congress on architectural envelopes CY - San Sebastián, Spain DA - 27.05.2015 KW - Composite panels KW - Ultra-high performance concrete (UHPC) KW - Autoclaved aerated concrete (AAC) KW - Cellular lightweight concrete ^ PY - 2015 SN - 978-84-88734-10-5 SP - 297 EP - 305 AN - OPUS4-33572 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Miccoli, Lorenzo A1 - Fontana, Patrick A1 - Silva, N. A1 - Klinge, A. A1 - Cederqvist, C. A1 - Kreft, O. A1 - Qvaeschning, D. A1 - Sjöström, C. T1 - Composite UHPC-AAC/CLC facade elements with modified interior plaster for new buildings and refurbishment. Materials and production technology N2 - The awareness of the environmental impact of the building sector is increasing. Steel reinforced concrete is the most commonly used construction material, though with a high-embodied energy and carbon footprint. Large environmental gains may arise if an alternative to steel reinforced concrete is developed. In this context, ultra-high performance concrete (UHPC) materials are shown to be promising alternatives with advantages such as lower embodied energy and reduced environmental impact. Predictions suggest that UHPC composite elements for building envelopes could have other benefits such as an increased service life, optimised use of building area due to thinner elements and minimised maintenance due to the absence of reinforcement or use of non-corrosive reinforcing materials such as carbon fibres. In the framework of the H-HOUSE project funded by the European Commission, composite elements are developed. The aim is to create facade panels combining an autoclaved aerated concrete or cellular lightweight concrete insulation layer with an external UHPC supporting layer. To enhance occupant comfort and health, hygroscopic materials that are capable to buffer indoor air humidity shall be applied to the inside of such elements. Indoor air humidity levels are expected to be more stable, which shall subsequently improve the indoor climate and minimise potential decay to the construction. KW - Composite panels KW - Ultra-high performance concrete (UHPC) KW - Autoclaved aerated concrete (AAC) KW - Cellular lightweight concrete (CLC) KW - Aerogel KW - Modified earth plaster PY - 2015 U6 - https://doi.org/10.3233/FDE-150029 SN - 2214-302X VL - 3 IS - 1 SP - 91 EP - 102 PB - IOS Press AN - OPUS4-33605 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Miccoli, Lorenzo A1 - Garofano, A. A1 - Fontana, Patrick A1 - Müller, U. T1 - Experimental testing and finite element modelling of earth block masonry N2 - The current paper focuses on the determination of reliable numerical models of earth block masonry wallettes under different loading conditions. Uniaxial compression and diagonal compression tests were performed. Experimental behaviour was modelled with a non-linear model able to describe the cracking behaviour. The simplified approach based on macro-modelling shows a satisfactory accuracy and low computational costs. The results reproducing the uniaxial compression are in good correspondence with the post-elastic behaviour observed in the experimental campaign. The micro-modelling approach adopted to reproduce the shear behaviour, even with high computational cost, represents a suitable tool to predict the masonry collapse mechanism. KW - Earth block masonry KW - Uniaxial compression test KW - Diagonal compression test KW - Numerical modelling KW - Macro-modelling approach KW - Micro-modelling approach PY - 2015 U6 - https://doi.org/10.1016/j.engstruct.2015.09.020 SN - 0141-0296 VL - 104 SP - 80 EP - 94 PB - Elsevier CY - Oxford AN - OPUS4-34553 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias A1 - Horn, Wolfgang A1 - Jann, Oliver A1 - Juritsch, Elevtheria A1 - Klinge, A. A1 - Roswag, E. A1 - Fontana, Patrick A1 - Miccoli, Lorenzo T1 - Indoor air emission tests of natural materials N2 - Emissions of building materials might have negative impact on human health and well-being. In the EU-funded research project H-House more than 30 natural materials (earthen dry boards and plasters, bio-based insulation materials made of wood, flax, reed, straw, etc.) used for renovation and refurbishment were tested regarding emissions of VOC, formaldehyde and radon. Different to ordinary emission tests on single materials this study focuses on the emissions from complete wall assemblies. Therefore, specially designed test chambers were used allowing the compounds to release only from the surface of the material facing indoors. The testing parameters were chosen in order to simulate model room conditions. The emission results were finally evaluated using the AgBB evaluation scheme, a procedure currently applied for the approval of flooring materials in Germany. T2 - 1st ICBBM - International conference on bio-based building materials CY - Clermont-Ferrand, France DA - 22.06.2015 KW - Emission testing KW - Natural materials KW - VOC KW - Formaldehyde KW - Radon PY - 2015 SN - 978-2-35158-154-4 SP - 641 EP - 643 AN - OPUS4-33609 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Miccoli, Lorenzo A1 - Fontana, Patrick A1 - Johansson, G. A1 - Zandi, K. A1 - Portal, Natalie Williams A1 - Müller, U. T1 - Numerical modelling of UHPC and TRC sandwich elements for building envelopes N2 - ln this paper a modelling approach is presented to reproduce the mechanical behaviour of sandwich panels via finite element analysis. Two types of panels were investigated in this scope of work. The first sandwich element was a textile reinforced concrete (TRC) panel with cellular lightweight concrete insulation and the second configuration was an ultra-high performances concrete (UHPC) panel with aerated autoclaved concrete insulation. The goal was to obtain a reliable numerical strategy that represents a reasonable compromise in terms of sufficient accuracy of the element characteristics and the computational costs. The results show the possibility of describing the composite action in a full sandwich panel. The achieved modelling approach will later be used for the optimization of TRC and UHPC panels in terms of minimizing the thickness, identifying the number and location of connectors, as well as evaluating varying anchorage Systems. T2 - IABSE conference - Structural engineering: Providing solutions to global challenges CY - Geneva, Switzerland DA - 23.09.2015 KW - Sandwich elements KW - Ultra-high performance concrete (UHPC) KW - Textile reinforced concrete (TRC) KW - Autoclaved aerated concrete (AAC) KW - Cellular lightweight concrete (CLC) KW - Finite element analysis (FEA) PY - 2015 SN - 978-3-85748-140-6 SP - 195 EP - 203 AN - OPUS4-34552 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Miccoli, Lorenzo A1 - Paganoni, S. A1 - Fontana, Patrick A1 - D'Ayala, D. T1 - Pull-out strength of anchor pins for brickwork masonry and earth block masonry / Auszugsfestigkeit von Verpressankern für Ziegel- und Lehmsteinmauerwerk N2 - In this paper results of the experimental testing performed on brick masonry and earth block masonry are presented. The paper outlines the development of the testing procedures for two different types of anchors. For this purpose, two experimental campaigns of pull-out tests on masonry corner connections strengthened by metallic rod grouted were carried out. Experimental results proved that the implemented testing procedures are suitable to determine the most recurring failure modes of the anchor pins. Moreover, a procedure is proposed to estimate the capacity of grouted anchor pins based on experimental studies. N2 - Mit diesem Beitrag soll die experimentelle Beurteilung von Verpressankern für Mauerwerk vorgestellt werden. Es wurden zwei Versuchsserien mit Ankerauszugsversuchen an Mauerwerksecken aus Ziegel- und Lehmsteinmauerwerk durchgeführt. Die Versuchsergebnisse haben gezeigt, dass die gewählten Versuchsabläufe geeignet sind, die am häufigsten wiederkehrenden Versagensarten der Verpressanker zu bestimmen. Darüber hinaus wird eine Vorgehensweise vorgeschlagen, die es ermöglicht, die Traglast von Verpressankern auf Basis experimenteller Untersuchungen abzuschätzen. KW - Brickwork masonry KW - Earth block masonry KW - Anchor pins KW - Bond strength KW - Pull-out test PY - 2015 U6 - https://doi.org/10.1002/dama.201500669 SN - 1432-3427 SN - 1437-1022 N1 - Sprachen: Deutsch/Englisch - Languages: German/English VL - 19 IS - 5 SP - 383 EP - 393 PB - Ernst CY - Berlin AN - OPUS4-34634 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CHAP A1 - Miccoli, Lorenzo A1 - Paganoni, S. A1 - Fontana, Patrick A1 - D'Ayala, D. ED - Jäger, W. T1 - Verpressanker für den Erdbebenschutz von Gebäuden aus Mauerwerk - experimentelle Untersuchungen des Verbundverhaltens N2 - Ziel der Untersuchungen war es, das Verhalten von Verpressankern zu analysieren, die üblicherweise zur Verstärkung der Eckverbindung von Mauerwerkswänden eingesetzt werden. Im Fokus der Untersuchungen stand die Leistungsfähigkeit der Ankersysteme mit Bezug auf die Versagensarten und auf dem Traglastvermögen der Anker bei Ankerauszug durch gleichförmige Zugbelastung, die als Vereinfachung für die dynamische Belastung durch ein Erdbeben aufgebracht wurde. Die hier dargestellten Untersuchungen und Ergebnisse stellen eine Zusammenfassung von Arbeiten dar, über die bereits in Beiträgen berichtet wurde, die zum einen die Prüfverfahren für verstärkte Eckverbindungen von Gebäuden aus Mauerwerk und zum anderen die Verbundfestigkeit von Verpressankern in Wänden aus verschiedenen Lehmbautechniken zum Inhalt hatten. Sie geben dennoch einen Überblick über die Hauptversagensmechanismen von Verpressankersystemen und erweitern den Wissensstand bezüglich der Prüfung von Ankersystemen für Ziegel- und Lehmsteinmauerwerk. Darüber hinaus wird eine Vorgehensweise vorgeschlagen, die es ermöglicht, die Traglast von Verpressankern auf Basis experimenteller Untersuchungen abzuschätzen. KW - Verpressanker KW - Ziegelmauerwerk KW - Lehmsteinmauerwerk KW - Verbundfestigkeit KW - Ankerauszugsversuche KW - Ankertraglast PY - 2015 SN - 978-3-433-03106-3 SN - 0170-4958 SP - Kap. III, 293 EP - 308 PB - Ernst & Sohn AN - OPUS4-33430 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -