摘要
作为一种非活性掺合料,石灰石粉在混凝土中的应用受到了广泛的关注,而在不同的混凝土体系中,石灰石粉对混凝土各项性能的影响规律也不尽相同。本文综述了石灰石粉对混凝土耐久性能影响的研究进展,详细阐述了石灰石粉在混凝土中的作用机制,包括其对混凝土抗冻性、抗碳化性、抗氯离子渗透性以及抗硫酸盐侵蚀性等耐久性能指标的影响,并分析了不同掺量、不同细度的石灰石粉对混凝土耐久性能的影响差异,以及石灰石粉与其他矿物掺合料复掺时对混凝土耐久性能的协同效应;同时,探讨了当前研究中存在的问题与不足,并对未来关于石灰石粉在提升混凝土耐久性能方面的研究方向进行了展望,旨在为石灰石粉在混凝土工程中的合理应用提供理论参考与实践指导。
As a non-active admixture,the application of limestone powder in concrete has received widespread attention,and the inf luence of limestone powder on various properties of concrete varies in different concrete systems.This paper comprehensively reviews the research progress on the inf luence of limestone powder on the durability of concrete.The action mechanisms of limestone powder in concrete are elaborated in detail,including its effects on durability indicators such as frost resistance,carbonation resistance,chloride ion penetration resistance,and sulfate erosion resistance of concrete.The differences in the durability of concrete caused by limestone powder with different dosages and finenesses are analyzed,as well as the synergetic effect on the durability of concrete when limestone powder is compounded with other mineral admixtures.At the same time,the existing problems and deficiencies in current research are discussed,and the future research directions of limestone powder in improving the durability of concrete are prospected,aiming to provide theoretical references and practical guidance for the rational application of limestone powder in concrete engineering.
出处
《混凝土世界》
2025年第6期86-90,共5页
China Concrete
基金
云南省交通投资建设集团有限公司科技创新项目(YCIC-YF-2023-08)
十四五国家重点研发计划课题(2023YFC3807304)。
关键词
石灰石粉
混凝土性能
耐久性能
研究进展
Limestone powder
concrete properties
durability
research progress
作者简介
第一作者:姬勇刚,1976年生,高级工程师,主要从事交通工程、水利工程相关的研究工作,E-mail:894256769@qq.com;通信作者:高超,1989年生,硕士,高级工程师,主要从事高性能混凝土技术及标准化研究相关工作,E-mail:gaochao1209@126.com。
