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石粉含量对超高性能混凝土性能影响研究
引用本文:赵学涛,杨鼎宜,杜保聪,朱从香,杨俊,刘淼.石粉含量对超高性能混凝土性能影响研究[J].混凝土与水泥制品,2020(3):6-9.
作者姓名:赵学涛  杨鼎宜  杜保聪  朱从香  杨俊  刘淼
作者单位:扬州大学建筑科学与工程学院,225127;扬州大学建筑科学与工程学院,225127;扬州大学绿色建筑材料研究所,225127;扬州工业职业技术学院,225127
基金项目:市级计划;国家自然科学基金;国家重点研发计划
摘    要:研究了不同石粉含量对超高性能混凝土工作性、力学性能以及抗冻性能的影响。结果表明,随着石粉含量的增加,超高性能混凝土的流动性、抗压、抗折强度均呈现出先上升后下降的趋势;石粉含量对超声波速和动弹性模量变化趋势与强度变化趋势一致;随着石粉含量的增加,抗冻性能先增加后减小;UHPC的最优石粉含量为3%~5%。

关 键 词:石粉  超高性能混凝土  流动性  强度  动弹性模量  抗冻性能

Study on the Effect of Stone Powder Content on Performance of Ultra-high Performance Concrete(UHPC)
ZHAO Xue-tao,YANG Ding-yi,DU Bao-cong,ZHU Cong-xiang,YANG Jun,LIU Miao.Study on the Effect of Stone Powder Content on Performance of Ultra-high Performance Concrete(UHPC)[J].China Concrete and Cement Products,2020(3):6-9.
Authors:ZHAO Xue-tao  YANG Ding-yi  DU Bao-cong  ZHU Cong-xiang  YANG Jun  LIU Miao
Affiliation:(School of Architectural Science and Engineering,Yangzhou University,225127;Institute of Green Building Materials,Yangzhou University,225127;Yangzhou Industrial Vocational and Technical College,225127)
Abstract:The influence of different stone powder content on the working performance,mechanical properties and frost resistance of UHPC was studied.The results show that with the increase of stone powder content,the fluidity,compressive strength and flexural strength of UHPC all show a trend of first rising and then falling;the change trend of stone powder content to ultrasonic velocity and dynamic elastic modulus is consistent with the change trend of strength;with the increase of stone powder content,the frost resistance first increases and then decreases;the optimal content of UHPC stone powder is 3%~5%.
Keywords:Stone powder  Ultra-high Performance Concrete(UHPC)  Fluidity  Strength  Dynamic modulus of elasticity  Frost resistance
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