矿渣粉掺合料对C50高性能混凝土综合性能的影响
Influence of Slag Powder Admixture on Comprehensive Properties of C50 High Performance Concrete
王兴照1
作者信息
- 1. 申铁方圆检测科技有限公司,上海 200433
- 折叠
摘要
矿渣粉通常被用作矿物掺合料来制备高性能混凝土,以S95级矿渣粉和C50高性能混凝土为研究对象,评价了不同矿渣粉掺量对C50高性能混凝土综合性能的影响.试验结果表明:随着S95级矿渣粉掺量的不断增大,C50高性能混凝土的抗氯离子渗透性能、抗开裂性能、抗水渗透性能、抗收缩性能、抗冻性能和抗碳化能力均呈现出"先增强后减弱"的趋势,存在一个最佳的掺量使C50高性能混凝土的综合性能达到最佳,在文中所述的试验条件下,推荐S95级矿渣粉的最佳掺量为20%,此时C50高性能混凝土综合性能最佳.研究结果认为,S95 级矿渣粉可以用作C50高性能混凝土的掺合料,合适掺量的矿渣粉不但能够有效降低混凝土中水泥的用量,还能有效提高混凝土的综合性能.
Abstract
Slag powder is usually used as mineral admixture to prepare high-performance concrete.Taking S95 grade slag powder and C50 high-performance concrete as research objects,the influence of different slag powder content on the comprehensive performance of C50 high-performance concrete was evaluated.The test results showed that with the continuous increase of S95 grade slag powder,the chloride ion permeability resistance,crack resistance,water permeability resistance,shrinkage resistance,frost resistance and carbonation resistance of C50 high performance concrete all showed a trend of"first strengthening and then weakening".There was an optimal amount of slag powder to make the comprehensive performance of C50 high performance concrete reach the best.Under the test conditions described in the article,it was recommended that the optimum content of S95 slag powder was 20%,and the comprehensive performance of C50 high-performance concrete was the best.The research results showed that S95 grade slag powder could be used as the admixture of C50 high-performance concrete.The appropriate amount of slag powder could not only effectively reduce the cement content in concrete,but also effectively improve the comprehensive performance of concrete.
关键词
矿渣粉掺合料/掺量/高性能混凝土/综合性能Key words
Slag powder admixture/Dosage/High performance concrete/Comprehensive performance引用本文复制引用
基金项目
福建省自然科学基金(2022J01923)
出版年
2024
NETL
NSTL
万方数据