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以水泥为固化剂,粉煤灰、石膏为外掺剂对人工配置的垃圾土进行改良,并对其不同龄期无侧限抗压强度进行了测量;通过电镜-能谱分析试验,分析了改良垃圾土的固化机理;以H2SO4和NaOH溶液模拟酸碱性环境,研究了酸碱性侵蚀对改良垃圾土强度的影响规律。试验结果表明:在垃圾土中加入水泥、粉煤灰和石膏比单独使用水泥加固垃圾土效果好;掺有水泥和粉煤灰的的改良土强度比单掺水泥的改良土强度均有所提高,在碱液中提高的幅度更大。
The artificial waste land was modified with cement as curing agent, fly ash and gypsum as external admixture, and the unconfined compressive strength at different ages was measured. Through electron microscopy-energy spectrum analysis test The solidification mechanism of landfill was improved. The acid-base environment was simulated with H2SO4 and NaOH solution. The influence of acid-base erosion on the strength of improved landfill was studied. The test results show that adding cement, fly ash and gypsum into landfill soil is better than using cement alone to reinforce the landfill soil. The strength of soil with cement and fly ash is higher than that of cement with fly ash alone , A greater increase in lye.