硅酸盐通报2025，Vol.44Issue(7)：2368-2377,10.DOI:10.16552/j.cnki.issn1001-1625.2024.1633
养护方式对硅酸镁水泥水化特性与力学性能的影响
Effects of Curing Methods on Hydration and Mechanical Properties of Magnesium Silicate Cement
摘要
Abstract
As a new type of green and low-carbon building material,magnesium silicate cement(MSHC)has the advantages of light,porosity,low alkalinity and low hydration heat,but it also has some problems such as slow development of mechanical properties in the early stage and easy cracking in the later stage.In this paper,the effects of curing methods such as high temperature(50 ℃)curing,high water absorbent resin(SAP)curing,SAP+ high temperature(50 ℃)curing on the mechanical properties of MSHC were discussed,and the mechanism was analyzed by XRD,SEM,comprehensive thermal analysis and solid state nuclear magnetic resonance silicon spectroscopy.The results show that compared with high temperature(50 ℃)curing or SAP curing alone,SAP+ high temperature(50 ℃)curing can significantly improve the early compressive strength of MSHC,promote hydration reaction,and its 3 and 28 d compressive strength can reach 34.8 and 61.0 MPa,respectively.High temperature curing accelerates the formation of MgO-SiO2-H2O(M-S-H)gel.SAP+ high temperature(50 ℃)curing method can more effectively promote the hydration of MgO and generate more M-S-H gel.关键词
硅酸镁水泥/养护制度/高吸水树脂/力学性能/水化程度/综合热分析/固体核磁Key words
magnesium silicate cement/curing system/SAP/mechanical property/degree of hydration/comprehensive thermal analysis/solid state nuclear magnetism分类
化学化工引用本文复制引用
李相国,包璐超,何晨昊,张呈山,吕阳..养护方式对硅酸镁水泥水化特性与力学性能的影响[J].硅酸盐通报,2025,44(7):2368-2377,10.基金项目
兵团科技计划项目(2023AB013-03) （2023AB013-03）
高分子材料湖北省重点实验室2023年度开放基金项目 （）
