Proposed mix design improvements of compressed stabilized earth blocks (CSEB) with particle packing optimization and coir reinforcement

IF 0.4 4区 综合性期刊 Q4 MULTIDISCIPLINARY SCIENCES
S. N. Malkanthi, K.G.K. Sathsara, P. D. Dharmaratne, H. Galabada
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Abstract

The use of the earth as a building material has been practiced since the beginning of human civilization. Unburnt bricks, rammed earth, adobe, and burnt bricks are some of them. As a result of technological development, adobe has developed into a compressed stabilized earth block (CSEB). The clay percentage of the soil significantly affects the strength of the CSEB. This study focused on controlling the clay percentage by adding larger particles externally using building construction waste and reinforcing them with coconut coir. Different coir amounts by weight from 0.1% to 0.5% with different lengths of 2 cm, 4 cm, 6 cm, and 8 cm were considered for block production. For dry compressive strength and wet compressive strength, the combination of 0.3% coir amount with 6 cm coir length gave the maximum strength, and it also satisfied the required water absorption limit as per the Grade 1 category of the SLS 1382, part 1. After that, using the above combination, the industrial scale (350 × 100 ×175) mm size block was prepared, and its strength also satisfied the SLS 1382 Grade 1 requirements. According to the study, the manufacturing cost for the CSEB is lower than that of cement blocks and clay bricks. The cost for a 1 m2 wall panel preparation using CSEB is 41.52% lower than preparing using burnt clay brick and 8.56% lower than preparing using cement blocks. Therefore, the CSEB can be used as a load-bearing walling material at a low cost and with eco-friendliness. 
利用颗粒填料优化和椰壳纤维加固改进压缩稳定土块(CSEB)混合设计的建议
利用泥土作为建筑材料的做法从人类文明开始就有了。其中包括未烧砖、夯土、土坯和烧砖。随着技术的发展,土坯已发展成为压缩稳定土块(CSEB)。土壤中的粘土比例对 CSEB 的强度有很大影响。本研究的重点是利用建筑废料在外部添加较大颗粒,并用椰壳纤维加固,从而控制粘土比例。在砌块生产过程中,考虑了不同的椰糠用量(按重量计),从 0.1% 到 0.5%,长度分别为 2 厘米、4 厘米、6 厘米和 8 厘米。在干抗压强度和湿抗压强度方面,0.3%的椰壳纤维用量和 6 厘米椰壳纤维长度的组合可获得最大强度,同时也符合 SLS 1382 第 1 部分 1 级类别所要求的吸水率限制。之后,利用上述组合制备了工业规模(350 × 100 × 175)毫米大小的砌块,其强度也满足 SLS 1382 第 1 级的要求。根据研究,CSEB 的制造成本低于水泥砖和粘土砖。使用 CSEB 制备 1 平方米墙板的成本比使用烧制粘土砖低 41.52%,比使用水泥砖低 8.56%。因此,CSEB 可用作承重墙材料,成本低且环保。
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来源期刊
CiteScore
0.90
自引率
0.00%
发文量
57
审稿时长
>12 weeks
期刊介绍: The Journal of National Science Foundation of Sri Lanka (JNSF) publishes the results of research in Science and Technology. The journal is released four times a year, in March, June, September and December. This journal contains Research Articles, Reviews, Research Communications and Correspondences. Manuscripts submitted to the journal are accepted on the understanding that they will be reviewed prior to acceptance and that they have not been submitted for publication elsewhere.
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