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Mechanical and durability properties of compressed stabilized earth brick produced with cassava wastewater
Journal of Building Engineering ( IF 6.4 ) Pub Date : 2021-09-09 , DOI: 10.1016/j.jobe.2021.103290
Jônatas Macêdo de Souza 1, 2, 3 , Ricardo Eugênio Barbosa Ramos Filho 2 , João Batista Duarte 2 , Vamberto Monteiro da Silva 3 , Sóstenes Rodrigues do Rêgo 3 , Luciana de Figueiredo Lopes Lucena 1, 4 , Wilson Acchar 2, 5
Affiliation  

Cassava wastewater (CW) is a residue from the production of flour which contains starch, a biopolymer, in its composition. This paper mainly highlights the use of this effluent in Compressed Stabilized Earth Brick (CSEB) instead of potable water. Compressive strength, water absorption, durability by wetting-drying cycles, X-ray diffraction, and scanning electron microscopy tests were performed to evaluate the mechanical and durability properties of the CSEBs. Compositions with CW showed higher mean results than those produced with potable water for the same cement proportions of 6% and 12%. CSEB with CW and 12% cement showed the highest compressive strength (4.9 MPa) and lowest water absorption (12.91%) at 49 days. In addition, it showed the lowest mass loss (0.3%) after six wetting-drying cycles. All formulations met the Brazilian CSEB standards. The results are promising and demonstrate the technical feasibility of bricks produced with CW.



中文翻译:

木薯废水生产压缩稳定土砖的力学性能和耐久性能

木薯废水 (CW) 是面粉生产过程中的残留物,其成分中含有淀粉(一种生物聚合物)。本文主要强调在压缩稳定土砖 (CSEB) 中使用这种流出物而不是饮用水。进行了压缩强度、吸水率、干湿循环耐久性、X 射线衍射和扫描电子显微镜测试,以评估 CSEB 的机械和耐久性性能。对于相同的 6% 和 12% 的水泥比例,使用 CW 的组合物显示出比使用饮用水产生的组合物更高的平均结果。使用 CW 和 12% 水泥的 CSEB 在 49 天时表现出最高的抗压强度 (4.9 MPa) 和最低的吸水率 (12.91%)。此外,它在六个干湿循环后显示出最低的质量损失 (0.3%)。所有配方均符合巴西 CSEB 标准。

更新日期:2021-09-10
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