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为探索适应于西北地区土遗址裂隙加固灌浆材料,以SH溶液为主剂,粉煤灰、土遗址原生土与生石灰拌合为灌浆材料,测试浆体的收缩变形性、龄期强度,通过温湿度循环试验、冻融循环试验、水稳定性试验、安定性试验和耐碱性试验,对浆体耐久性进行评价,此外,通过室内模拟裂隙注浆,研究浆-土界面之间的抗剪特性。试验数据表明,SH-(C+F+Ca O)浆体具有较小的收缩变形性,较强的力学性能、良好的耐久性,尤其适用于西北地区特有的碱性环境中;而硫酸钠对其有一定的弱化效应,在高浓度的硫酸钠土遗址地区应慎用,浆–土界面抗剪强度与土遗址原状样相当。研究表明,此浆液适宜作为西北地区土遗址裂隙注浆材料。
In order to explore the fissure grouting material which is suitable for the soil ruins in Northwest China, the SH solution was used as the main agent, the fly ash and the indigenous soil of the ruins were mixed with lime for the grouting material to test the shrinkage deformation and age strength of the slurry, Humidity cycle test, freeze-thaw cycle test, water stability test, stability test and alkali resistance test were carried out to evaluate the durability of the slurry. In addition, through the indoor simulation of fracture grouting, the shear resistance characteristic. The experimental data show that the SH- (C + F + CaO) slurry has less shrinkage deformation, stronger mechanical properties and good durability, and is especially suitable for the alkaline environment unique to Northwest China. However, sodium sulfate It has a certain weakening effect, should be used with caution in areas with high concentrations of sodium sulphate. The shear strength at the soil-soil interface is comparable to that of the original site. Research shows that this slurry is suitable as a fissure grouting material for the soil ruins in Northwest China.