Experimental investigation on the bond behavior of a compatible TRM-based solution for rammed earth heritage
| Autor: | Antonio Romanazzi, Daniel V. Oliveira, Rui André Martins Silva |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Science & Technology
Visual Arts and Performing Arts Bond Pull-out test Rammed earth 0211 other engineering and technologies Arts & Humanities 020101 civil engineering 02 engineering and technology Conservation Direct tensile test Compatible strengthening 0201 civil engineering Engenharia e Tecnologia::Engenharia Civil 021105 building & construction 11. Sustainability Architecture Bonded length Engenharia Civil [Engenharia e Tecnologia] Geotechnical engineering Single lap-shear test Seismic risk Geology Textile reinforced mortar |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Despite the current awareness of the high seismic risk of earthen structures, little has been done so far to develop proper strengthening solutions for the rammed earth heritage. Based on the effectiveness of TRM for masonry buildings, the strengthening of rammed earth walls with externally bonded fibers using earth-based mortar is being proposed as a compatible solution. In this context, the investigation of bond behavior was conducted by means of direct tensile tests, pull-out tests and single lap-shear tests. The specimens were prepared using earth-based mortars and two different types of meshes (glass and nylon) while considering different-bonded lengths. The direct tensile tests on TRM coupons showed the high capacity of the nylon mesh in transferring stresses after cracking of the mortar. The pull-out tests highlighted that in the case of glass fiber mesh, the bond was granted by friction, while the mechanical anchorage promoted by the transversal yarns granted the bond of the nylon mesh. Finally, the single lap-shear tests showed that the adopted earth-based mortar seems to limit the performance of the strengthening. This work was supported by the Fundacao para a Ciencia e a Tecnologia [PTDC/ECM-EST/2777/2014, SFRH/BD/131006/2017, SFRH/BPD/97082/2013]. |
| Databáze: | OpenAIRE |
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