摘要
研究了不同掺量的玻璃纤维对高性能混凝土早期抗裂性能的影响,并以裂缝总条数、裂缝最大宽度以及总开裂面积评价其影响效果。同时,对比研究了纤维对高性能混凝土的抗压强度、劈裂抗拉强度和拉压比的影响。结果表明:随着玻璃纤维掺量的增加,混凝土的裂缝总条数不断减少,总开裂面积明显降低,当纤维体积掺量达到0.11%时,能够显著抑制混凝土早期裂缝的产生。玻璃纤维的掺入对抗压强度影响不大,但提高了混凝土的劈裂抗拉强度、拉压比和韧性,改善了高性能混凝土的抗裂性能。
The influence of different contents of glass fiber on early cracking resistance of high performance concrete was studied,and the total number of cracks,maximum crack width and total crack area were used in evaluating the influence of glass fiber.At the same time,the effects of fibers on the compressive strength,splitting tensile strength and tension-compression ratio of high performance concrete were studied.The results show that with the increase of glass fiber content,the total number of cracks and total crack area decrease obviously.When the fiber content reaches 0.11%,the early cracks can be inhibited significantly.The incorporation of glass fiber has little effect on the compressive strength,but it improves the splitting tensile strength,tension-compression ratio and toughness of concrete,and improves the crack resistance of high performance concrete.
作者
王威
宿利平
姜瑞双
WANG Wei;SU Li-ping;JIANG Rui-shuang(Beijing Municipal Road&Bridge Group Co.,Ltd.,Beijing 100032,China;Shandong Transportation Institute,Jinan 250031,China;Shandong Research and Development Center of Bridge-Tunnel Maintenance Technologies and New Materials,Jinan 250031,China)
出处
《混凝土与水泥制品》
2021年第3期48-51,共4页
China Concrete and Cement Products
基金
国家重点研发项目计划课题(2018YFB1600100)
山东省交通运输厅科技计划项目(2018B22,2018B23,2019B29)。
关键词
玻璃纤维
高性能混凝土
早期抗裂性能
抗压强度
劈裂抗拉强度
Glass fiber
High performance concrete
Early cracking resistance
Compressive strength
Splitting tensile strength
