Federal University of Lavras, Lavras, Brazil.
Environ Sci Pollut Res Int. 2022 Mar;29(14):21034-21048. doi: 10.1007/s11356-021-16769-z. Epub 2021 Nov 8.
This research aimed to evaluate the effect of adding different polymeric waste percentages and types on the physical, mechanical, thermal, and durability properties of soil-cement bricks. Tire and polyethylene terephthalate (PET) waste were evaluated at 1.5 and 3.0% (mass/mass). The soil was characterized in terms of shrinkage, compaction, consistency limits, particle size, and chemical analyses, whereas the waste particles were submitted to morphological characterization. The bricks were produced in an automatic press with a 90:10 (mass/mass) soil:cement ratio. The soil-cement bricks were characterized by density, moisture, water absorption, loss of mass by immersion, compressive strength, thermal conductivity, and microstructural analysis. PET waste stood out for its use as reinforcement in soil-cement bricks. The best performance was obtained for bricks reinforced with 1.5% PET, which showed a significant compressive strength improvement, meeting the marketing standards criteria, even after the durability test, as well as obtaining the lowest thermal conductivity values. The percentage increase from 1.5 to 3.0% fostered a significant water absorption and loss of mass increase, as well as a significant compressive strength reduction of the bricks.
本研究旨在评估在土壤-水泥砖中添加不同比例和类型的聚合废物对其物理、机械、热和耐久性性能的影响。评估了 1.5% 和 3.0%（质量/质量）的轮胎和聚对苯二甲酸乙二醇酯（PET）废物。土壤的特性包括收缩、压实、稠度极限、粒径和化学分析，而废物颗粒则进行了形态特征分析。砖块在自动压力机中以 90:10（质量/质量）的土壤：水泥比生产。土壤-水泥砖的特性包括密度、水分、吸水率、浸泡失重、抗压强度、导热系数和微观结构分析。PET 废物因其在土壤-水泥砖中的增强作用而引人注目。在增强 1.5% PET 的砖块中获得了最佳性能，其抗压强度显著提高，符合市场标准标准，甚至在耐久性测试后也是如此，同时还获得了最低的导热系数值。从 1.5%增加到 3.0%会显著增加砖块的吸水率和失重，同时显著降低砖块的抗压强度。
