摘要
以沙漠沙替代传统硅质原料制备硅酸盐水泥,通过在1300~1450℃煅烧温度下制备沙漠沙水泥熟料,对比分析了沙漠沙水泥熟料与工业水泥熟料及其制成水泥的水化产物的相组成、微观结构,以及硬化浆体的力学性能的差异.结果表明:沙漠沙水泥熟料中3CaO·SiO_(2)质量分数达60.80%,较工业水泥熟料提高9.90%,颗粒分布更均匀细小;90 d时硬化浆体平均孔径仅7.46μm,较工业水泥降低了50.66%.力学性能结果显示:1350℃下制备的沙漠沙水泥性能在3 d和90 d时抗压强度最大值分别达41.12 MPa和82.17 MPa,较工业水泥分别提升了14.13%和15.00%.
The desert sand was used as an alternative to traditional silica source for the preparation of silicate cement.Desert-sand cement clinker was prepared at calcination temperatures ranging from 1300℃to 1450℃.The phase composition and microstructure of the desert-sand cement clinker and its hydration products in the corresponding cement,as well as the mechanical properties of the hardened paste,were compared and analyzed with those of industrial cement clinker.Results show that the desertsand cement clinker contains 60.80%of 3CaO·SiO_(2),which is 9.90%higher than that of industrial cement clinker,with a more uniform and finer particle distribution.The average pore size of the hardened cement paste at 90 d is only 7.46μm,which is a 50.66%reduction compared to that of industrial cement.The mechanical performance results show that the desert-sand cement calcined at 1350℃achieves maximum compressive strengths of 41.12 MPa at 3 d and 82.17 MPa at 90 d,representing respective increases of 14.13%and 15.00%compared to that of industrial cement.
作者
罗雯莉
史志铭
朱金才
王文彬
LUO Wenli;SHI Zhiming;ZHU Jincai;WANG Wenbin(School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;School of Aeronautics,Inner Mongolia University of Technology,Hohhot 010051,China;School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Key Laboratory of Green Construction and Intelligent Operation and Maintenance of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)
出处
《华中科技大学学报(自然科学版)》
北大核心
2025年第12期140-147,192,共9页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(52168031)
内蒙古自然科学基金资助项目(2024MS05056)
内蒙古自治区直属高校基本科研业务费资助项目(JY20230091).
关键词
沙漠沙
水泥
水化产物
微观结构
力学性能
desert sand
cement
hydration products
microstructure
mechanical property
