Comparison of the performance of hydraulic lime- and clay-based grouts in the repair of rammed earth
| Autor: | Daniel V. Oliveira, Rui André Martins Silva, Oriol Domínguez-Martínez, Eduardo Pereira |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0211 other engineering and technologies
020101 civil engineering Shear behaviour 02 engineering and technology engineering.material 0201 civil engineering Rammed earth Engenharia e Tecnologia::Engenharia Civil 021105 building & construction General Materials Science Geotechnical engineering Lime-based grout Interlocking Civil and Structural Engineering Science & Technology Diagonal compression Grout Hydraulic lime Digital image correlation Building and Construction Sonic testing Clay-based grout Engenharia Civil [Engenharia e Tecnologia] engineering Grout injection Built heritage Geology Repair |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Earth constructions constitute an important part of the built heritage and are spread worldwide. Rammed earth is among the most used earth construction techniques, though it exhibits a high seismic vulnerability. Nevertheless, the structural behaviour of rammed earth structures is still insufficiently comprehended. Thus, the preservation of this built heritage requires exhaustive characterisation of its mechanical and structural behaviours, as well as the development and validation of adequate intervention solutions. In this context, this paper presents an experimental program aimed at evaluating the effectiveness of grout injection to repair cracks and at further characterising the in-plane shear behaviour of rammed earth walls. The experimental program included the testing of rammed earth wallets under diagonal compression, which were subsequently repaired with injection of a clay-based or a hydraulic lime-based grout, and retested. Furthermore, sonic tests were conducted on the wallets before the destructive tests. The obtained results allowed to highlight that both grouts led to similar repairing performances, though the interlocking contribution promoted by the coarse particles of the rammed earth to the shear behaviour was found to be irrecoverable. Programa Operacional Temático Factores de Competitividade (POCI-01-0145-FEDER-007633) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|