材料属性对混凝土断裂能影响研究综述  

Analysis of influencing factors on the fracture energy of concrete

作　　者：羌宇杰 徐龚欢 王霄[2] 卢建琴 卜静武 Qiang Yujie;Xu Gonghuan;Wang Xiao;Lu Jianqin;Bu Jingwu(College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,China;Huai’an Water Conservancy Survey and Design Research Institute Co.,Ltd.,Huai’an 223000,China;Yangzhou City Survey Design Research Institute Co.,Ltd.,Yangzhou 225007,China)

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009 [2]淮安市水利勘测设计研究院有限公司,江苏淮安223000 [3]扬州市勘测设计研究院有限公司,江苏扬州225007

出　　处：《山西建筑》2021年第11期96-100,共5页Shanxi Architecture

基　　金：国家自然科学基金(51809227)。

摘　　要：对三点弯曲梁法、楔入劈拉法两种混凝土断裂能测试方法获得的数据进行分析,详细介绍了两种混凝土断裂能测试方法,讨论了不同强度、砂率、水胶比等材料属性对混凝土断裂能的影响规律。结果表明,混凝土强度越大,断裂能越大;随着粗骨料最大粒径的增大,断裂能有先增大后逐渐趋于稳定的趋势;水胶比和砂率越大,混凝土断裂能越小。但是材料各种属性对混凝土断裂能的影响相互干扰,难以定量区分各个因素对断裂能影响程度。In this paper,the experimental results on the main influencing factors on the fracture energy of concrete in recent years are summarized and analyzed.The different influencing factors,such as test conditions and material properties on the fracture energy of concrete are discussed through the data obtained by the three-point bending test and wedge splitting test.The results show that,fracture energy is positively correlated with concrete strength,and negatively correlated with sand ratio and water cement ratio.The fracture energy increases with the maximum aggregate size and then decreases with it.There is no unified conclusion on the relationship between fracture energy,and these material characteristics.

关 键 词：混凝土 断裂能 三点弯曲梁法 楔入劈拉法 材料属性 

分 类 号：TU528.0[建筑科学—建筑技术科学]