论文部分内容阅读
以疏浚海淤泥为研究对象,水泥为固化剂,掺入连云港当地固体废弃物磷尾矿砂,达到改善海淤泥工程性质、缩短建设周期、保护环境的目的。采用2因素(水泥添加量和磷尾矿砂掺量)5水平均匀试验确定了不同的配比,利用无侧限抗压强度试验,研究无侧限抗压强度的影响因素,从水稳定性和CBR值两个方面证明,提高磷尾矿砂掺量对海淤固化土强度有促进作用。在试验和理论的基础上提出掺磷尾矿砂海淤固化土的强度公式,并进行回归,固化土存在最小的水泥需要量。
Taking the dredged sea mud as the research object, cement is used as the curing agent, which is blended into the local tailings of Lianyungang phosphorus tailings to improve the engineering properties of sea silt, shorten the construction period and protect the environment. The factors of unconfined compressive strength were studied by using unconfined compressive strength test. Five factors (cement content and phosphorus tailing sand content) CBR value of two aspects prove that raising the content of phosphorus tailings on sea silt curing soil intensity has a promoting effect. On the basis of experiment and theory, the formula of intensity of sea silt hardened soil with phosphorus-doped tailings is put forward and regressed. There is the minimum cement requirement in hardened soil.