高强混凝土力学性能试验研究  

Experimental Study on Mechanical Properties of High Strength Concrete

作　　者：何好飞 黄云超 孙嘉辰 刘博伟 He Haofei;Huang Yunchao;Sun Jiachen;Liu Bowei(School of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,Henan,China)

机构地区：[1]华北水利水电大学水利学院,河南郑州450046

出　　处：《绿色科技》2024年第22期251-256,共6页Journal of Green Science and Technology

摘　　要：为探究C60高强混凝土的轴心抗压强度、劈裂抗拉强度、抗折强度与立方体抗压强度之间的相互关系,进行上述参数间的强度转换。通过混凝土基本力学性能试验,测试了高强混凝土的立方体抗压强度、轴心抗压强度、劈裂抗拉强度、抗折强度等性能指标,研究了C60高强混凝土基本力学性能及其之间的关系,探讨了我国现行规范中轴心抗压强度与立方体抗压强度的转换关系应用于高强混凝土时的适用性。结果表明:我国现行规范建议取值用以计算高强混凝土轴心抗压强度时偏于保守;后通过收集国内外文献中的相关数据,重点分析了轴心抗压强度、劈裂抗拉强度、抗折强度与立方体抗压强度之间的相互关系,提出了基于C60高强混凝土的强度计算公式及取值建议。根据所提出的强度计算公式,可将立方体抗压强度直接转换为轴心抗压强度、劈裂抗拉强度和抗折强度的具体值,相关研究成果可为混凝土基本力学性能强度转换及规范修订提供参考。To establish the relationship among the axial compressive strength,splitting tensile strength,flexural strength,and cubic compressive strength of C60 high-strength concrete,strength conversions were conducted among these parameters.Through conducting basic mechanical performance tests on concrete,its cube compressive strength,axial compressive strength,splitting tensile strength,bending strength,and other performance indicators of high-strength concrete are tested.The basic mechanical properties of C60 high-strength concrete and their interrelationships are investigated.The applicability of the conversion relationship between axial compressive strength and cubic compressive strength,as specified in China's current codes,to high-strength concrete is examined.The results show that the recommended values in China's current codes are conservative when calculating the axial compressive strength of high-strength concrete.Then,by collecting the relevant data in the literature at home and abroad,the relationship between axial compressive strength,splitting tensile strength,flexural strength and cube compressive strength is analyzed.According to the proposed strength calculation formula,the cubic compressive strength can be directly converted into the specific values of axial compressive strength,splitting tensile strength and flexural strength.The strength calculation formula and value suggestion based on C60 high strength concrete are put forward,which can provide a reference for the strength conversion of basic mechanical properties of concrete and the revision of the code.

关 键 词：C60高强混凝土 抗压强度 劈裂抗拉强度 抗折强度 回归公式 

分 类 号：U444[建筑科学—桥梁与隧道工程]