论文部分内容阅读
针对污染土的水泥固化稳定法修复技术,对水泥固化稳定重金属铅污染土的强度预测方法进行了研究.水泥固化含铅污染土强度由室内无侧限抗压强度试验所得,试验所用污染土通过人工制备而成,考虑了1.0×102,1.0×103,1.0×104,3.0×104mg/kg四种质量比和5%,7.5%,10%三种水泥掺量.结果表明:不同龄期水泥固化含铅污染土的无侧限抗压强度间大致呈线性关系,而2个不同水泥掺入比水泥固化含铅污染土的无侧限抗压强度比值与水泥掺入比呈幂函数关系;通过对不同配合比、不同龄期试样强度的进一步拟合分析,得到了根据某一龄期强度预测另一龄期强度的经验公式和根据某一水泥掺量的强度预测另一水泥掺量强度的经验公式,以上公式同时适用于普通水泥固化土和含铅水泥固化污染土.
Aimed at the cement solidification and stabilization method for the remediation of contaminated soil, the method for predicting the strength of cement-stabilized and contaminated lead-contaminated soil was studied.The strength of the cement-contaminated lead-contaminated soil was obtained from the indoor unconfined compressive strength test, Which were prepared by hand, taking into account the four kinds of mass ratios of 1.0 × 102, 1.0 × 103, 1.0 × 104 and 3.0 × 104 mg / kg and 5%, 7.5% and 10% cement.The results show that: The unconfined compressive strength of solidified lead-contaminated soil is roughly linear, while the unconfined compressive strength ratio of two different cement-dosed than that of cement-cured lead contaminated soil shows a power function relationship with cement dosing ratio. Based on the further fitting analysis of the strength of the samples with different proportions and different ages, the empirical formula of predicting the strength of another age according to the strength of one age and the strength of another content of cement are used to predict the cement content Strength empirical formula, the above formula applies to both ordinary cement and lead-containing cement curing contaminated soil.