This study aims to introduce alternative environmentally friendly compositions for soil-dust suppression. Carbon dioxide was utilized to produce free carbonate (CO₃^2–) by a laboratory electrolysis cell. Different carbonate mineral compositions were then provided by adding Fe²⁺, Mg²⁺, and Ca²⁺ ions to the sodium carbonate solution. Different carbonate minerals were eventually used as soil stabilizing agents for sandy soil-dust suppression. Laboratory tests including unconfined compressive strength (UCS), direct shear test, California bearing ratio (CBR), and permeability tests in addition to field tests were performed to assess the feasibility of using CO₂ induced carbonate minerals as soil stabilizing agent. It was found that the UCS and cohesion intercept of the treated specimens increased in comparison with the untreated specimens. CBR rating of the treated specimens indicated a harder surface which resulted in a lower permeability of the treated specimens. The study showed this alternative approach is a promising effort in utilization of CO₂ for soil surface stability improvement.

本研究旨在介绍用于抑制土壤粉尘的替代环保组合物。实验室电解槽利用二氧化碳生产游离碳酸盐（CO ₃ ^2-）。然后通过向碳酸钠溶液中添加Fe ²⁺、Mg ²⁺和Ca ²⁺离子来提供不同的碳酸盐矿物组成。不同的碳酸盐矿物最终被用作沙土抑尘的土壤稳定剂。除了现场测试外，还进行了实验室测试，包括无侧限抗压强度 (UCS)、直接剪切测试、加利福尼亚承载比 (CBR) 和渗透率测试，以评估使用 CO ₂的可行性诱导碳酸盐矿物作为土壤稳定剂。发现与未处理的样品相比，处理过的样品的 UCS 和内聚截距增加。处理过的样品的 CBR 等级表明表面较硬，这导致处理过的样品渗透性较低。研究表明，这种替代方法在利用 CO ₂改善土壤表面稳定性方面是一项有前途的努力。