摘要
研究了减缩剂(SRA)掺量对超高性能混凝土(UHPC)抗压强度、抗折强度、自收缩和干燥收缩的影响。结果表明:随着减缩剂掺量的增加,UHPC的自收缩和干燥收缩显著降低,特别是早期自收缩减小效果更为明显,但同时会降低试件的抗压强度、抗折强度,且随着减缩剂掺量的增加,抗压强度不断降低。
The effects of shrinkage reducing agent(SRA)dosage on compressive strength,flexural strength,self-shrinkage and drying shrinkage of UHPC were studied.The results show that with the increase of SRA,the self-shrinkage and drying shrinkage of UHPC are significantly reduced,especially for the early self-shrinkage reduction effect is more obvious,but at the same time the compressive strength and the flexural strength of the UHPC specimen are reduced,and with the increase of SRA,the compressive strength is continuously reduced.
作者
刘菲凡
LIU Fei-fan(Shanghai Research Institute of Building Sciences Co.,Ltd.,Shanghai 200032,China)
出处
《混凝土与水泥制品》
2022年第6期6-9,16,共5页
China Concrete and Cement Products
基金
上海市科学技术委员会科研计划项目(19QB1405000)。
