Slurry for reinforcing loess excavation and filling interface and preparation method thereof

• Main Authors: FAN JIFEI, ZHAO KUANYAO, ZHANG YILAN, GAO GUOPING, GAO DENGHUI, WANG DAOPENG
• Format: Patent
• Language: Chinese; English
• Published: 04.06.2024
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; LIME, MAGNESIA; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention provides slurry for reinforcing a loess excavation and filling interface and a preparation method of the slurry, and belongs to the field of soil reinforcement. According to the invention, a component B obtained from Portland cement, standard sand, fly ash and a polycarboxylic acid water reducer has a preliminary reinforcement effect; the component A obtained by loading bacillus pasteurii bentonite, urea, calcium chloride, a surfactant, an antioxidant and methyl cellulose deposits calcium carbonate through microbial mineralization to further fill gaps and reinforce and reinforce a soil body, the shear strength is improved, the strength loss after water soaking is reduced, the influence on the environment is small, and construction is convenient. 本发明提供了一种用于加固黄土挖填界面的浆液及其制备方法，属于土壤加固领域。本发明以硅酸盐水泥、标准砂、粉煤灰、聚羧酸系减水剂获得的组分B起到初步加固作用，后续通过负载巴氏芽孢杆菌膨润土、尿素、氯化钙、表面活性剂、抗氧化剂、甲基纤维素获得的A组分通过微生物矿化作用沉积碳酸钙进一步填充缝隙和增强加固土体，提高了抗剪强度和减少了浸水后的强度损失，而且对环境影响小，施工方便。