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A platform for research: civil engineering, architecture and urbanism
Method for improving expansive soil through urease alkaline residues and construction method of expansive soil
The invention relates to the technical field of geotechnical engineering, and provides a method for improving expansive soil through urease alkaline residues and a construction method of the expansive soil. The preparation method comprises the following steps: a, mixing calcium oxide, magnesium oxide, silicon dioxide, aluminum oxide, ferric oxide, titanium dioxide and manganese oxide to obtain an alkaline residue mixture; b, carrying out particle screening on the alkaline residue mixture, and reserving alkaline residue particles with the particle size of 0.075-10mm; c, the alkaline residues are pretreated, including water washing, acid pickling and neutralizing treatment, and drying treatment is conducted; and d, mixing the pretreated alkaline residues and expansive soil according to a mass ratio of 5-20% by using mixing equipment, and adjusting the water content to the optimal water content. The alkaline residues are pretreated, including water washing, acid pickling and neutralizing treatment, so that heavy metal impurities and soluble salt in the alkaline residues are effectively removed, the pH value of soil tends to be neutral, the problem of soil acidification or alkalization is avoided, the chemical property of the soil is further improved, and the effect of reducing soil pollution is achieved.
本发明涉及岩土工程技术领域，提供了一种脲酶碱渣改良膨胀土的方法及其施工方法，包括以下步骤；a，将氧化钙、氧化镁、二氧化硅、氧化铝、氧化铁、二氧化钛和氧化锰进行混合，得到碱渣混合物；b，对碱渣混合物进行颗粒筛分，保留粒径为0.075mm～10mm之间的碱渣颗粒；c，对碱渣进行预处理，包括水洗、酸洗和中和处理，并进行干燥处理；d，使用混合设备将预处理后的碱渣与膨胀土按质量比5％～20％混合，调节含水量至最佳含水量。通过对碱渣进行预处理，包括水洗、酸洗和中和处理，有效去除了碱渣中的重金属杂质与溶解性盐，并使土壤的pH值趋于中性，避免导致的土壤酸化或碱化问题，进一步改善了土壤的化学性质，达到减少了土壤的污染的效果。
Method for improving expansive soil through urease alkaline residues and construction method of expansive soil
The invention relates to the technical field of geotechnical engineering, and provides a method for improving expansive soil through urease alkaline residues and a construction method of the expansive soil. The preparation method comprises the following steps: a, mixing calcium oxide, magnesium oxide, silicon dioxide, aluminum oxide, ferric oxide, titanium dioxide and manganese oxide to obtain an alkaline residue mixture; b, carrying out particle screening on the alkaline residue mixture, and reserving alkaline residue particles with the particle size of 0.075-10mm; c, the alkaline residues are pretreated, including water washing, acid pickling and neutralizing treatment, and drying treatment is conducted; and d, mixing the pretreated alkaline residues and expansive soil according to a mass ratio of 5-20% by using mixing equipment, and adjusting the water content to the optimal water content. The alkaline residues are pretreated, including water washing, acid pickling and neutralizing treatment, so that heavy metal impurities and soluble salt in the alkaline residues are effectively removed, the pH value of soil tends to be neutral, the problem of soil acidification or alkalization is avoided, the chemical property of the soil is further improved, and the effect of reducing soil pollution is achieved.
本发明涉及岩土工程技术领域，提供了一种脲酶碱渣改良膨胀土的方法及其施工方法，包括以下步骤；a，将氧化钙、氧化镁、二氧化硅、氧化铝、氧化铁、二氧化钛和氧化锰进行混合，得到碱渣混合物；b，对碱渣混合物进行颗粒筛分，保留粒径为0.075mm～10mm之间的碱渣颗粒；c，对碱渣进行预处理，包括水洗、酸洗和中和处理，并进行干燥处理；d，使用混合设备将预处理后的碱渣与膨胀土按质量比5％～20％混合，调节含水量至最佳含水量。通过对碱渣进行预处理，包括水洗、酸洗和中和处理，有效去除了碱渣中的重金属杂质与溶解性盐，并使土壤的pH值趋于中性，避免导致的土壤酸化或碱化问题，进一步改善了土壤的化学性质，达到减少了土壤的污染的效果。
Method for improving expansive soil through urease alkaline residues and construction method of expansive soil
一种脲酶碱渣改良膨胀土的方法及其施工方法
SONG YU (author) / LI JIAQI (author) / JIANG JIAHUI (author) / CHENG JICHUN (author) / ZHANG JIANWEI (author) / ZHENG JUNJIE (author)
2025-01-24
Patent
Electronic Resource
Chinese
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