First exploratory study on dynamic characteristics of rammed earth buildings

Bui, Quoc-Bao; Hans, Stéphane; Morel, Jean‐Claude; Do, Anh-Tuan

doi:10.1016/j.engstruct.2011.08.004

Cited by 84 publications

(44 citation statements)

References 12 publications

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“…In fact, the Ministry of construction in Chile is not recommending earth adobes or tapial structures in public constructions, due to structural performance, their performance supposed to be poorer than concrete blocks or bricks [18]. However, some studies (see references [19][20][21][22][23][24]) indicate that structural problems can be resolved in earth walls using different techniques and maintaining better energy performance. Simulation shows very clearly that block-work (covered by cement) leads to significant problems in summer and overheating during winter.…”

Section: Monitoring Results-winter Timementioning

confidence: 99%

Thermal Performance of Traditional and New Concept Houses in the Ancient Village of San Pedro De Atacama and Surroundings

Palme¹,

Guerra²,

Alfaro³

2014

Sustainability

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Earth, wood and others traditional materials are still used in house constructions in many regions of the world, especially in the Andes. San Pedro de Atacama, for example, is a small town where earth blocks (adobes) and rammed earth (tapial) are important ways to construct, an art passed on through generations. Energy properties of earth are very interesting: thermal conductivity is low; heat storage capacity is high; color is variable and can be used to absorb or to reject solar radiation. However, nowadays the government social dwelling service is proposing a different type of construction, which does not maintain any relation with the tradition. This paper presents simulation studies and monitoring of four different San Pedro houses, constructed by using different techniques and materials. Results can be used to discuss the thermal performance needed in desert climate and the reliability of social dwelling service houses, under construction at this time in the town.

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Section: Monitoring Results-winter Timementioning

confidence: 99%

Thermal Performance of Traditional and New Concept Houses in the Ancient Village of San Pedro De Atacama and Surroundings

Palme¹,

Guerra²,

Alfaro³

2014

Sustainability

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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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“…Several investigations have recently been conducted to study the mechanical characteristics of RE by using analytical methods ( [4], [5], [6], [11], [12], [13], [21]) or by employing a numerical model ( [9], [18]). These studies assumed that the cohesion at the interface between earthen layers was perfect.…”

Section: Introductionmentioning

confidence: 99%

Modeling rammed earth wall using discrete element method

Bui

Limam

et al. 2015

Continuum Mech. Thermodyn.

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Rammed earth is attracting renewed interest throughout the world thanks to its "green" characteristics in the context of sustainable development. Several research studies have thus recently been carried out to investigate this material. Some of them attempted to simulate the rammed earth's mechanical behavior by using analytical or numerical models. Most of these studies assumed that there was a perfect cohesion at the interface between earthen layers. This hypothesis proved to be acceptable for the case of vertical loading, but it could be questionable for horizontal loading. To address this problem, discrete element modeling seems to be relevant to simulate a rammed earth wall. To our knowledge, no research has been conducted thus far using discrete element modeling to study a rammed earth wall. This paper presents an assessment of the discrete element modeling's robustness for rammed earth walls. Firstly, a brief description of the discrete element modeling is presented. Then, thirteen parameters that were necessary for discrete element modeling were identified. The relevance of the model and the material parameters were assessed by comparing them with experimental results from the literature. The results showed that, in the case of vertical loading, interfaces did not have an important effect. In the case of diagonal loading, model with interfaces produced better results. Interface's characteristics can vary from 85% to 100% of the corresponding earthen layer's characteristics.

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First exploratory study on dynamic characteristics of rammed earth buildings

Cited by 84 publications

References 12 publications

Thermal Performance of Traditional and New Concept Houses in the Ancient Village of San Pedro De Atacama and Surroundings

Thermal Performance of Traditional and New Concept Houses in the Ancient Village of San Pedro De Atacama and Surroundings

Assessing the Rebound Hammer Test for Rammed Earth Material

Modeling rammed earth wall using discrete element method

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