硅酸盐通报2025，Vol.44Issue(5)：1803-1812,10.DOI:10.16552/j.cnki.issn1001-1625.2024.1562
矿渣-粉煤灰-玻璃粉复合固化盾构土力学性能及固化机制
Mechanical Properties and Solidification Mechanism of Slag-Fly Ash-Glass Powder Composite Solidified Shield Soil
摘要
Abstract
In order to realize the green and low-carbon reuse of engineering muck,the effects of slag,fly ash and glass powder content on the mechanical properties of solidified soil at different ages(3,7,14,28 d)were studied.The microstructure and hydration products of solidified silt soil were analyzed by scanning electron microscopy(SEM)and X-ray diffraction(XRD),and the curing mechanism was revealed.The results show that the early strength of slag-fly ash and slag-glass powder composite solidified soil increases with the increase of slag content.When the proportion of slag is 50％to 60％(mass fraction),the early strength of slag-fly ash-glass powder ternary composite solidified soil can be effectively improved by increasing the content of glass powder.The error of unconfined compressive strength prediction model of solidified soil established by simplex centroid method is within 10％.Slag-glass powder composite solidified soil shows higher cohesion than slag-fly ash solidified soil at low slag content.The slag-fly ash-glass powder ternary composite curing system significantly improves the compactness of soil,and generates hydrated sodium aluminosilicate,hydrated calcium silicate and hydrated calcium aluminosilicate gel.These hydration products pack and bond the soil particles and improve the mechanical properties of solidified soil.关键词
盾构土/地聚物/碱激发/力学性能/固化机制Key words
shield soil/geopolymer/alkali excitation/mechanical property/solidification mechanism分类
建筑与水利引用本文复制引用
骆展鹏,熊春林,韩泽军,王胜新,刘凯华..矿渣-粉煤灰-玻璃粉复合固化盾构土力学性能及固化机制[J].硅酸盐通报,2025,44(5):1803-1812,10.基金项目
广东省基础与应用基础研究基金自然科学基金面上项目(2024A1515011602) （2024A1515011602）
