摘要
本文阐述了KLJ型防裂抗渗复合材料对混凝土拌合物性能、力学、变形、早期抗裂及耐久性的影响规律,分析了复合材料对混凝土性能的影响机理。结果表明:KLJ型防裂抗渗复合材料能改善混凝土的各项性能,尤其混凝土力学性能显著提高,1 kg/m^(3)掺量对混凝土性能改善效果最佳;掺量1 kg/m^(3),混凝土的干缩收缩率28 d、96 d分别降低42%、29%,早期开裂减少82%,平均渗水高度降低58%,碳化深度减少29%;KLJ型防裂抗渗复合材料中的粉体可以均匀填充混凝土内部孔隙,纤维能够阻止裂缝进一步扩大,进而改善混凝土各项性能。
In the paper, the influence of KLJ type anti-crack and anti-seepage composite material on the properties, mechanics, deformation, early crack resistance and durability of concrete mixture is studied, and the influence mechanism of composite material on the properties of concrete is analyzed.The results show that KLJ type anti-crack and anti-seepage composite material can improve various properties of concrete, especially the mechanical properties of concrete are significantly improved, 1 kg/m^(3) has the best improvement effect on concrete properties;when the content of concrete is 1 kg/m^(3),the dry shrinkage rate of concrete decreases by 42% and 29% at 28 d and 96 d, the early cracking decreases by 82%,the average seepage height decreases by 58%,and the carbonization depth decreases by 29%.KLJ anti-crack and anti-seepage composite material can fill the internal pores of concrete evenly, and the fiber can prevent the further expansion of cracks, so as to improve the performance of concrete.
作者
蒋林华
牛亚露
刘政权
周阜军
杨宪伟
JIANG Linhua;NIU Yalu;LIU Zhengquan;ZHOU Fujun;YANG Xianwei(College of Mechanics and Materials,Hohai University,Nanjing 211100,China;Yancheng Hydraulic Engineering Construction Co.,Ltd.,Yancheng 224006,China;Jiangsu Hampton New Material Technology Co.,Ltd.,Yangzhou 225232,China)
出处
《粉煤灰综合利用》
CAS
2022年第6期73-80,共8页
Fly Ash Comprehensive Utilization
基金
江苏省水利科技项目(2021018)。
关键词
混凝土
力学性能
抗裂
耐久性
concrete
mechanical properties
crack resistance
durability
作者简介
蒋林华(1963-),男,博士,教授,博士生导师,主要从事混凝土耐久性和工程新材料等领域的研究。
