硅酸盐通报2024，Vol.43Issue(10)：3561-3571,11.
复合水泥固化剂固化泥炭土渗透性研究
Permeability of Peat Soil Solidified by Composite Cement Solidification Agent
摘要
Abstract
In response to the challenges of poor engineering properties and the high difficulty in improving peat soil,a composite cement solidification agent(CCS)comprising ultra-fine cement(UFC)and ordinary Portland cement(OPC)was proposed for the solidification of simulated peat soil.The influence of UFC on the permeability of cement-soil samples was investigated through osmotic pressure tests and X-ray diffraction(XRD)experiments.Osmotic pressure tests results indicate that,under constant CCS dosage,the permeability coefficient k of specimens decreases with increasing UFC mass fraction,with a significant attenuation of the decreasing trend observed when the UFC mass fraction exceeds 12％.For CCS with a UFC mass fraction of 12％,k decreases with increasing CCS dosage,and the declining trend is notably attenuated when the dosage exceeds 25％.XRD results indicate that the diffraction peak intensity of calcium silicate hydrate(C-S-H)in the samples increases with both the increase in the UFC mass fraction and the curing time.Compared to OPC,CCS achieves superior solidification efficiency with a reduced cement dosage,facilitating the attainment of carbon reduction objectives.关键词
复合水泥固化剂/泥炭土/超细水泥/渗透系数/X射线衍射/减碳Key words
composite cement solidification agent/peat soil/ultra-fine cement/permeability coefficient/X-ray diffraction/carbon reduction分类
建筑与水利引用本文复制引用
曹净,张兴文,雷舒羽,李育红,程芸..复合水泥固化剂固化泥炭土渗透性研究[J].硅酸盐通报,2024,43(10):3561-3571,11.基金项目
国家自然科学基金(41967035) （41967035）
