Quadratic regression model parameter values.

This paper aimed to research the role of zeolite and palm fiber in changing strength of cement-treated soil. The unconfined compressive strength (UCS) testwas mainly used to study the changes of strength of cement-treated soil by varied content of cement, zeolite, palm fiber under different curing period. The optimum substitution rate of zeolite for cement was researched for the purpose of increasing of strength of cement-treated soil and low carbon and environment protection, while the optimum content of palm fiber was explored for improving of strength and ductility of cement-treated soil by means of analytic software. Finally, the multiple regression technology was used to try to capture the relationship between strength of cement-treated soil and content of zeolite and palm fiber. The results show that the cement, zeolite, palm fiber and curing age have strong effect on the UCS of cement-treated soil.本论文旨在探究沸石与棕榈纤维对水泥固化土强度的调控作用。本研究主要采用无侧限抗压强度（unconfined compressive strength, UCS）试验，分析不同养护龄期下，水泥、沸石、棕榈纤维掺量变化对水泥固化土强度的影响规律。为提升水泥固化土强度并兼顾低碳环保目标，本研究对沸石替代水泥的最优掺配比例展开研究；同时借助分析软件，明确了可同时改善水泥固化土强度与延性的棕榈纤维最优掺量。最后，本研究采用多元回归技术，尝试构建水泥固化土强度与沸石、棕榈纤维掺量之间的定量关联关系。试验结果表明，水泥掺量、沸石掺量、棕榈纤维掺量及养护龄期均对水泥固化土的无侧限抗压强度具有显著影响。