粒度和硬化溶液摩尔浓度对利用矿山尾矿制造的新型土工聚合物砂浆力学性能的影响

C. Palomino-Ñaupa, F. Huamán-Mamani
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引用次数: 0

摘要

在这项工作中,评估了最大粒径和碱性硬化溶液摩尔浓度对秘鲁矿山尾矿粉尘土工聚合制成的土工聚合物砂浆单轴压缩机械响应的影响。力学结果表明,随着硬化溶液摩尔浓度从 10M 增加到 15M,平均机械阻力也随之增加;另一方面,可以证实随着砂和矿山尾矿的粒径增大,机械阻力值也随之增加。所发现的机械数据与孔隙度结果非常吻合,即随着孔隙度值的增加,机械阻力逐渐减小。当摩尔浓度和最大粒径值增加时,所研究的土工聚合物砂浆的刚度值略有增加。所有研究的砂浆都呈现出类似的微观结构,细砂颗粒分散在土工聚合物(土工聚合采矿尾矿)的连续相中。
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Effect of Particle Size and Molarity of Hardening Solution on the Mechanical Properties of New Geopolymeric Mortars Manufactured from Mine Tailings
In this work, the effect of the maximum particle size and the molar concentration of the alkaline hardening solution on the mechanical response in uniaxial compression of geopolymeric mortars manufactured from the geopolymerization of Peruvian mine tailings dust was evaluated. The mechanical results found showed that the average mechanical resistance increased as the molar concentration of the hardening solution increased from 10 to 15M, on the other hand, it was possible to verify that as the particle size of sand and mine tailings is greater, the mechanical resistance values increased. The mechanical data found are in good agreement with the porosity results, that is, as the porosity values increased, the mechanical resistance gradually decreased. The stiffness values reported in the studied geopolymeric mortars showed a slight increase when the values of molar concentration and maximum particle size increased. All the mortars studied presented a similar microstructure, with fine sand particles dispersed within a continuous phase of geopolymer (geopolymerized mining tailings).
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