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由于高分子材料固化土结构稳定、耐久性好,且加固过程不会对土体产生负面影响,其在土遗址保护加固中已取得了初步的应用。新型水溶性高分子材料SH作为固化剂在固沙以及黄土改良处理上应用广泛,前人对其加固机理也进行了深入的研究。将SH溶液与遗址土按一定水土比拌合,并对SH-C浆液结石体进行物理、水理等工程性质试验,探讨SH作为遗址土灌浆加固材料的可行性。试验结果表明,SH-C结石体相比遗址土而言,颗粒粒径发生变化,主要为粘粒凝聚转化为粉粒;其界限含水率和塑性指数都有不同程度的增大;渗透性随着SH浓度增大而降低;结石体的收缩率很小,而水稳定性较强。基于SH固土机制,遗址土拌合SH后物理性质产生了一定变化,而其力学性质、水稳定性等方面有了改善,在土遗址灌浆中有很好的应用价值。
Due to its stable structure and durability, the polymer material has the advantages of good durability and no negative influence on the soil during the reinforcement process. Therefore, it has achieved preliminary application in the protection and reinforcement of the earth ruins. New water-soluble polymer SH as a curing agent in the sand and loess improved treatment widely used, previous reinforcement mechanism also conducted in-depth study. The SH solution and the site soil are mixed according to a certain ratio of water and soil. The physical and hydraulic engineering properties of the SH-C slurry stone are tested, and the feasibility of using SH as the site grouting reinforcement material is discussed. The results show that compared with the site soil, the size of SH-C stones changes, which mainly changes from agglomeration of clay to powder, and its limiting moisture content and plasticity index all increase to some extent. The permeability SH concentration increases and decreases; stone body contraction rate is small, and water stability is strong. Based on the SH soil-fixing mechanism, the physical properties of the site soil mixed with SH changed a little, but its mechanical properties, water stability and other aspects have been improved, which has a good application value in the soil site grouting.