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In-plane shear behaviour of earthen materials panels strengthened with polyester fabric strips
BAM Federal Institute for Materials Research and Testing, Germany.
BAM Federal Institute for Materials Research and Testing, Germany.
RISE., SP – Sveriges Tekniska Forskningsinstitut.ORCID-id: 0000-0003-1904-7426
2016 (Engelska)Ingår i: Structural Analysis of Historical Constructions: Proceedings of the 10th International Conference on Structural Analysis of Historical Constructions (SAHC 2016), 2016, s. 1099-1105Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

An experimental investigation was carried out to study the in-plane shear behaviour of earthen material panels strengthened with polyester fabric strips. Strengthened panels were developed to exploit the strength potential of earthen materials and to solve its lack of tensile strength, significantly improving not only strength but also ductility. Three earthen materials were considered: cob, earth block masonry (EBM) and rammed earth (RE). As first approach the strengthening configuration, based on different adhesive materials, was tested only for cob panels. As part of the study the results of a big testing campaign of unstrengthened panels were considered. Seven strengthened panels were tested in diagonal compression/shear.A unique reinforcement orientation was used. The results of these tests are presented in this paper, and include the load-displacement behaviours, crack patterns, failure modes. The results showed that the reinforcement was the most effective in EBM panels, with increase in strength and ductility observed. In RE and cob panels the reinforcement did not likely contribute significantly to the shear resistance, due to a lack of embedment length of the strips. Instead, in EBM it was likely that the vertical reinforcement acted in tension to restrain shear induced dilation and to restrain sliding.

Ort, förlag, år, upplaga, sidor
2016. s. 1099-1105
Nyckelord [en]
Ductility, Masonry materials, Reinforcement, Tensile strength, Adhesive materials, Diagonal compressions, Experimental investigations, Load-displacement behaviours, Shear resistances, Strength and ductilities, Strength potential, Vertical reinforcement, Structural analysis
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-27669DOI: 10.1201/9781315616995-163Scopus ID: 2-s2.0-85002412672ISBN: 9781138029514 (tryckt)OAI: oai:DiVA.org:ri-27669DiVA, id: diva2:1059218
Konferens
10th International Conference on Structural Analysis of Historical Constructions (SAHC 2016), September 13-15, 2016, Leuven, Belgium
Anmärkning

References: (2010) Standard test method for diagonal tension (shear) in masonry assemblages, , E 519-10; Bernat-Maso, E., Gil, L., Escrig, C., Textilereinforced rammed earth: Experimental characterisation of flexural strength and thoughness (2016) Construction and Building Materials, 106, pp. 470-479; Bhattacharya, S., Sanket, N., Sekhar, C.D., A critical review of retrofitting methods for unreinforced masonry structures (2014) International Journal of Disaster Risk Reduction, 7, pp. 51-67; Blondet, M., Torrealva, D., Vargas, J., Velasquez, J., Tarque, N., Seismic reinforcement of adobe houses using external polymer mesh (2006) Proceedings of First European Conference on Earthquake Engineering and Seismology, p. 632. , Geneva, Switzerland, 3-8 September 2006, Paper Number; (2003) EN 998-1 Specification for mortar for masonry. Part 1: Rendering and plastering mortar; Dowling, D., Samali, B., Li, J., Seismic improvement of adobe-mudbrick walls: Comparison between internal and external reinforcement (2005) Proceedings of the 2005 Australian Earthquake Engineering Society Conference, , Albury, New SouthWales, Australia: The Australian Earthquake Engineering Society, 38/1-38/7; (1998) 1052-1. Methods of test for masonry - Part 1: Determination of compressive strength; Garcia, G., Ginocchio, F., Tumialan, G., Nanni, A., Reinforcing of adobe structures with FRP bars (2004) Proceedings of the 1st International Conference on Innovative Materials and Technologies for Construction and Restoration, , Naples, Italy; Grau, P., Neumann, J., Beas, M., Seismic retrofitting guidelines for the conservation of doctrinal chapels on the Oyon Highlands in Peru (2006) Proceedings of the Getty SeismicAdobe Project 2006., , LosAngeles, Getty Conservation Institute; Figueiredo, A., Varum, H., Costa, A., Silveira, D., Oliveira, C., Seismic retrofitting solution of an adobe masonry wall (2013) Materials and Structures, 46, pp. 203-219; Giamundo, V., Lignola, G.P., Prota, A., Manfredi, G., Nonlinear analyses of adobe masonry walls reinforced with fiberglass mesh (2014) Polymers, 6, pp. 464-478; Liu, K., Wang, M., Wang, Y., Seismic retrofitting of rural rammed earth buildings using externally bonded fibers (2015) Construction and Building Materials, 100, pp. 91-101; Macabuag, J., Guragain, R., Bhattacharya, S., Seismic retrofitting of non-engineered masonry in rural Nepal (2012) Proceedings of the ICE - Structures and Buildings; Macabuag, J., (2007) An introduction to modelling and retrofitting of non-engineered masonry buildings under seismic loading, , MEng Research Report, Oxford University; Miccoli, L., Müller, U., Fontana, P., Mechanical behaviour of earthen materials: A comparison between earth block masonry, rammed earth and cob (2014) Construction and Building Materials, 61, pp. 327-339; Miccoli, L., Müller, U., Silva, B., Da Porto, F., Vintzileou, E., Vasconcelos, G., Adami, C.E., Overview of different strengthening techniques applied on walls used in historical structures (2012) Proceedings of 8th International Conference on StructuralAnalysis of Historical Constructions, pp. 2870-2878. , Wroclaw, 15-17 October 2012; Tetley, R., Madabhushi, G., Vulnerability of adobe buildings under earthquake loading (2007) Proceedings of the international conference on earthquake geotechnical engineering, p. 1244. , Greece, June 25-28: Paper Number; Tipler, J., Worth, M., Morris, H., Ma, Q., Shake table testing of scaled geogrid-reinforced adobe wall models (2010) Proceedings of the 2010 NZSEE Conference, , Wellington, New Zealand: New Zealand Society for Earthquake Engineering, 84-93; Tolles, E.L., Kimbro, E.E., Ginnel, S.W., (2003) Planning and engineering guidelines for the seismic retrofitting of historic adobe structures, , Los Angeles, CA: Getty Conservation Institute; Torrealva, D., Cerron, C., Espinoza, Y., Shear and out of plane bending strength of adobe walls externally reinforced with polypropylene grids (2008) Proceedings of the 14th World Conference on Earthquake Engineering, , Beijing, China; Torrealva, D., Hardy, M., Cerron, C., Espinoza, Y., Using polymer grid as seismic flexural reinforcement in historically significant adobe buildings (2011) Terra 2008: The 10th International Conference on the Study and Conservation of EarthenArchitectural Heritage, , Getty Publications, 2011; Yamin, L., Phillips, C., Reyes, J., Ruiz, D., Seismic behaviour and rehabilitation alternatives for adobe and rammed earth buildings (2004) Proceedings of the 13th World Conference on Earthquake Engineering, , Vancouver, Canada

Tillgänglig från: 2016-12-22 Skapad: 2016-12-21 Senast uppdaterad: 2019-08-09Bibliografiskt granskad

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