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Drfone adobe bt i ck3/26/2023 Despite its low compressive strength, cob thus presents a relatively good performance within the earthen material range as far as shear behaviour is concerned. First compression results showed brittle mechanical behaviour in the case of earth block masonry and rammed earth elements, whereas cob exhibited a very different stress–strain pattern: cob can deform beyond the elastic range with a gradual drop in capacity. In order to gain better knowledge on the structural behaviour under static loads an extensive compression and diagonal compression (shear) test campaign was performed. In this paper a comparison of the mechanical performance of structural elements built in three basic techniques, earth block (adobe) masonry, rammed earth and cob, is presented. Stabilized clay blocks at 30% lime content present a 14% improvement in bulk density, 13% in thermal conductivity, 12% in thermal effusivity, 20% in thermal diffusivity, 41% in compressive strength, and 10% in flexural strength, compared to unstabilized specimens.Įarth represents one of the oldest construction materials, which is still utilised both in developed and in developing countries. At this content, the stabilized clay blocks show optimal mechanical performance and improved thermal properties compared to the reference samples. Therefore, a lime content of 30% represents the optimal lime content for stabilizing Bensmim clay. After this content, the mechanical performances decrease with lime addition, and no amelioration is detected. For the findings of the mechanical tests, it is observed that the flexural and compressive strengths of lime-stabilized clay blocks continue to increase until a lime content of 30%. The thermophysical tests results showed that the lime addition positively influences the lightness and the thermophysical properties of lime-stabilized clay specimens. The results of clay identification showed that Bensmim clay meets the minimum requirements for manufacturing compressed earth and adobe bricks. Particle size distribution of used clay was determined following a wet sieving analysis method. Besides, a Chemical identification of Bensmim clay was investigated via the X-Ray Fluorescence method. The mechanical performance was measured in terms of compressive and flexural strengths. The Flash method was used to evaluate thermal diffusivity. The thermal characterization was made by the Asymmetrical Hot Plate method in study state and transient regime to identify, respectively, the thermal conductivity and the thermal effusivity. Many different samples of clay specimens reinforced with lime at six different contents (0%, 10%, 20%, 30%, 40%, 50%, and 70%) were prepared and tested. The main purpose of the present work is to evaluate the thermophysical and mechanical behavior of lime-stabilized clay blocks. This study aims at testing experimentally the stabilization of unexploited clay from the Bensmim region (Middle Atlas, Morocco) using traditional quick lime from Sefrou located nearly to Bensmim for potential use in building applications.
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