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Rammed earth walls strengthened with polyester fabric strips: Experimental analysis under in-plane cyclic loading
BAM Bundesanstalt für Materialforschung und –prüfung, Germany.
RISE - Research Institutes of Sweden, Samhällsbyggnad, CBI Betonginstitutet.ORCID-id: 0000-0003-1904-7426
Institute of Theoretical and Applied Mechanics, Czech Republic.
2017 (Engelska)Ingår i: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 149, s. 29-36Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This study analyses the mechanical behaviour under pseudo-dynamic loading of structural elements built in rammed earth and strengthened with polyester fabric strips. This strengthening technique was developed to exploit the strength potential of rammed earth and to solve its lack of tensile strength. For this reason, in-plane cyclic tests were carried out to investigate the shear behaviour of unstrengthened and strengthened walls. The strengthening technique requires low-tech equipment and workmanship, uses readily available, not expensive and industrially standardised materials. The experimental results were analysed in terms of stiffness degradation, energy dissipation capacity and equivalent viscous damping. Although the unstrengthened and strengthened walls confirmed a limited ductile behaviour, the findings confirm that the strengthening contributes to limit the spread of the diagonal cracks and provide an increase of strength in terms of horizontal load and displacement capacity.

Ort, förlag, år, upplaga, sidor
2017. Vol. 149, s. 29-36
Nyckelord [en]
Polyester fabric strips, Pseudo-dynamic loads, Rammed earth, Shear-compression tests, Strengthening, Compression testing, Cyclic loads, Dynamic loads, Energy dissipation, Strengthening (metal), Tensile strength, Energy dissipation capacities, Equivalent viscous damping, Polyester fabric, Pseudo-dynamics, Stiffness degradation, Strengthening technique, Walls (structural partitions)
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-30803DOI: 10.1016/j.conbuildmat.2017.05.115Scopus ID: 2-s2.0-85019367985OAI: oai:DiVA.org:ri-30803DiVA, id: diva2:1138724
Anmärkning

 Funding details: EC, European Commission; Funding text: This research was funded by the European Commission within the framework of the project NIKER dealing with improving immovable cultural heritage assets against the risk of earthquakes (contract No. 244123). The support of Czech Ministry of Education Youth and Sport via project LO1219 is acknowledged. The authors wish to express their gratitude to Mr. André Gardei, Mr. Shota Urushadze and Dr. Stanislav Hračov for their important support in the test setup and the samples preparation.

Tillgänglig från: 2017-09-06 Skapad: 2017-09-06 Senast uppdaterad: 2018-12-20Bibliografiskt granskad

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Mueller, Urs

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