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Earthen building materials: Hydraulic lime based grout for retrofitting and CEBs stabilised with geopolymer binders

  • From the last decades the earth construction has a growing interest due to the high sustainability (low C02 emissions), thermal and acoustic performance, fire resistance and cost of the raw material (soil). In fact, earth construction can constitute a feasible solution for a more sustainable construction industry in developed countries. Nowadays the research areas on earthen construction focus from one side on the improvement of the materials for new buildings, on the other side on the Conservation of existing architectural heritage. Historical earthen buildings are often damaged by static or dynamic loads in form of extensive cracking. All too often these cracks are insufficiently or inappropriately repaired, if at all, because of lack of knowledge and/or technology. In particular, the behaviour of crack repair by grouting poses a challenge in earthen materials and demands specific requirements for the grouting mortar, such as low water content, good water retention, low shrinkage,From the last decades the earth construction has a growing interest due to the high sustainability (low C02 emissions), thermal and acoustic performance, fire resistance and cost of the raw material (soil). In fact, earth construction can constitute a feasible solution for a more sustainable construction industry in developed countries. Nowadays the research areas on earthen construction focus from one side on the improvement of the materials for new buildings, on the other side on the Conservation of existing architectural heritage. Historical earthen buildings are often damaged by static or dynamic loads in form of extensive cracking. All too often these cracks are insufficiently or inappropriately repaired, if at all, because of lack of knowledge and/or technology. In particular, the behaviour of crack repair by grouting poses a challenge in earthen materials and demands specific requirements for the grouting mortar, such as low water content, good water retention, low shrinkage, etc. Cracks in earthen construction can be repaired by grouting to re-establish structural continuity, and can also be used to consolidate voids and gaps, or as a complement to other strengthening techniques such as the introduction of tie-rods. In the framework of earthen materials for new constructions, the major drawback is that traditional earthen materials are typically considered as non-standard. The great variability and heterogeneity of the properties of the available soils, the lack of quality control in the manufacturing of the earthen materials and in the construction process can be pointed out as the main reasons behind this Situation. Furthermore, only few countries issued Standards and recommendations supporting earth construction, discouraging the design of earth construction by the technical community in countries where these documents are absent.zeige mehrzeige weniger

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Metadaten
Autor*innen:Lorenzo Miccoli
Persönliche Herausgeber*innen:Nsesheye Susan Priebe, Wolfram Schmidt
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Eigenverlag BAM
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Proceedings of the 1st symposium knowledge exchange for young scientists (KEYS)
Jahr der Erstveröffentlichung:2015
Verlag:Bundesanstalt für Materialforschung und -prüfung (BAM)
Verlagsort:Berlin
Erste Seite:141
Letzte Seite:144
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Freie Schlagwörter:Compressed earth blocks; Earthen building materials; Geopolymer binders; Hydraulic lime based grout
Veranstaltung:KEYS 2015 - 1st Symposium Knowledge Exchange for Young Scientists
Veranstaltungsort:Dar es Salaam, Tanzania
Beginndatum der Veranstaltung:09.06.2015
Enddatum der Veranstaltung:11.06.2015
ISBN:978-3-9817149-3-7
Zugehöriger Identifikator:https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/33575
Bemerkung:
Geburtsname von Priebe, Nsesheye Susan: Msinjili, N. S. -  Birth name of Priebe, Nsesheye Susan: Msinjili, N. S.
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Nein
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