Assessing the in-plane seismic performance of rammed earth walls by using horizontal loading tests

El-Nabouch, R.; Bui, Quoc-Bao; Plé, Olivier; Perrotin, Pascal

doi:10.1016/j.engstruct.2017.05.027

Cited by 58 publications

(42 citation statements)

References 16 publications

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“…Several research investigations have recently been conducted to study the properties of RE: mechanical characteristics [1,[11][12][13][14][15][16][17], durability [9,18], hygrothermal behavior [6,[19][20][21], and earthquake performance [22][23][24][25]. However, using nondestructive techniques to determine the in-situ characteristics of RE walls is less reported, although several studies can be cited.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Rebound Hammer Test for Rammed Earth Material

Bui

2017

Sustainability

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Rammed-earth (RE) is a construction material manufactured from the soil. The soil is compacted at its optimum water content, inside a formwork to build a monolithic wall. RE material is attracting renewed interest throughout the world thanks to its sustainable characteristics: low embodied energy, substantial thermal inertia, and natural regulator of moisture; on the other hand, the existing historic RE buildings is still numerous. This is why several research studies have been carried out recently to study different aspects of this material. However, few investigations have been carried out to explore the possibility of applying the nondestructive techniques on RE walls. This paper presents an assessment of the well-known rebound hammer test on RE walls. The calibration curves of the rebound hammer test have been established for conventional concrete where the rebound number is more than 20. For RE material with lower compressive strengths, a new calibration curve must be established. In the present study, two soils were used and different homogenized specimens with different dry densities were manufactured and tested, to plot a general calibration curve. Then, this calibration curve was applied to RE specimens; different results at different positions in an earthen layer were observed, due to the inhomogeneity of the material. The final results showed an acceptable accuracy of the calibration curve in the prediction of the compressive strength of RE material.

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Section: Introductionmentioning

confidence: 99%

Assessing the Rebound Hammer Test for Rammed Earth Material

Bui

2017

Sustainability

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“…If a pushover analysis following Eurocode 8 is carried out to assess the in-plane seismic performance of these walls by using the numerical curve of horizontal load-horizontal displacement (more details can be found in [13,35]), the position of the numerical performance point will be close to the experimental performance point. is result means that the numerical model can provide satisfying results for the pushover analysis.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…A nonnegligible number of studies on RE material are observed during the last decade, on different topics: mechanical characteristics [5][6][7][8][9], thermal and hygrothermal properties [4,10], and durability [11,12]. For the earthquake performance of RE structures, although several studies have explored this topic [13][14][15][16], different aspects still need to be investigated more thoroughly. In order to study the earthquake behavior of an entire RE structure, robust numerical models are a necessary approach.…”

Section: Introductionmentioning

confidence: 99%

Shear Parameters of Rammed Earth Material: Results from Different Approaches

El-Nabouch

Bui

Perrotin

et al. 2018

Advances in Materials Science and Engineering

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Rammed earth (RE) is a construction material which is manufactured by compacting the soil in a formwork, in different layers. Several recent studies have investigated this material. The seismic performance of RE buildings is an important topic which needs to be carefully investigated. The complex numerical model seems a performant approach to investigate the seismic performance of a whole building. To correctly establish the model, the shear parameters of the material, which are the cohesion and the friction angle, should be identified. This paper first presents experimental studies on the shear parameters of RE through the direct shear tests, at two different scales. The differences of the results at different scales are analyzed. Then, the obtained experimental values are used in a numerical model to simulate the shear behavior of RE walls which are loaded by a constant vertical stress and pushed horizontally on the top. From the obtained results, the values for numerical models are recommended.

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“…To measure these parameters, testing procedures from two different origins can be found in literature. The tests primarily designed for brick masonries, namely triplet test [75], push over [76,77] and diagonal compression test (DCT) [78,79], and the tests from geotechnical engineering, namely the direct shear test (DST) also called shear box test [80,81], and the triaxial test [75,[82][83][84][85]. The analysis of the data reported in literature for rammed earth does not give a clear tendency, whatever the testing protocol considered.…”

Section: Shear Behaviourmentioning

confidence: 99%

Assessing the performance of earth building materials: a review of recent developments

2018

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After being almost abandoned at the end of the Second World War, the use of raw earth is currently regaining the interest of architects, engineers and policy makers for the construction of dwellings in industrialised countries. This renaissance is driven by growing ecological awareness and the promotion of construction techniques that minimize energy consumption and carbon emissions. Raw earth displays very interesting thermo-hygro-mechanical properties, which can contribute to the reduction of the environmental impact of buildings not only during construction but also during service life. Nevertheless, one of the reasons that still prevents dissemination of raw earth into construction practice is the lack of commonly agreed procedures for assessing material performance. The RILEM technical committee TCE 274 has been established as a first step for overcoming this obstacle. The objective of the technical committee is to critically examine current testing procedures in order to propose suitable experimental standards. The results of this work will be presented in future publications while the present paper summarizes the main challenges faced by the committee and briefly describes some of the existing procedures for measuring the engineering properties of earth materials.

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Assessing the in-plane seismic performance of rammed earth walls by using horizontal loading tests

Cited by 58 publications

References 16 publications

Assessing the Rebound Hammer Test for Rammed Earth Material

Assessing the Rebound Hammer Test for Rammed Earth Material

Shear Parameters of Rammed Earth Material: Results from Different Approaches

Assessing the performance of earth building materials: a review of recent developments

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