钢纤维掺量对碱矿渣混凝土力学性能的影响  

Effect of Steel Fiber Content on Mechanical Properties of Alkali-activated Slag Concrete

作　　者：袁晓辉 石艳羽 陈宜新 关慧亭 芦峰 陈秀云[3] YUAN Xiaohui;SHI Yanyu;CHEN Yixin;GUAN Huiting;LU Feng;CHEN Xiuyun(College of Architecture and Civil Engineering,Xinyang Normal University,Xinyang 464000,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;School of Architectural Engineering,Huanghuai University,Zhumadian 463000,China)

机构地区：[1]信阳师范大学建筑与土木工程学院,河南信阳464000 [2]武汉理工大学材料科学与工程学院,湖北武汉430070 [3]黄淮学院建筑工程学院,河南驻马店463000

出　　处：《信阳师范学院学报（自然科学版）》2023年第4期656-662,共7页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(11702238);河南省高等学校重点科研项目(23A560015);驻马店市重大科技专项(19005)。

摘　　要：为研究钢纤维掺量对碱矿渣混凝土力学性能的影响规律,制作钢纤维碱矿渣混凝土抗压力学性能试验试件共计54个,进行立方体抗压强度、棱柱体抗压强度、弹性模量和泊松比试验研究,并对试件内部微裂缝进行定性和定量分析,揭示钢纤维对碱矿渣混凝土的增强增韧机理。结果显示:与钢纤维掺量有关的立方体抗压强度修正公式理论计算值与试验结果吻合良好;一定范围内的钢纤维掺量对该材料的强度、弹性模量和泊松比均有提高作用,过大的掺量会造成混凝土材料内部发生结团现象,界面过渡区增多,降低其力学性能;碱矿渣混凝土配合比下的最佳钢纤维掺量为1.4%。In order to investigate the influence law of steel fiber content on the mechanical behavior of alkali slag concrete,the steel fiber alkali-activated slag concrete stress performance test specimen for a total of 54 were made,the cube compressive strength,prism compressive strength,elastic modulus and Poisson’s ratio test and research were performed,and the qualitative and quantitative analysis of specimen internal micro cracks were given to reveal the steel fiber to enhance toughening mechanism of alkali slag concrete.The results showed that the theoretical calculated values of the steel fiber content related cube compressive strength correction formula were in good agreement with the results obtained in the experiment;In a certain range,the steel fiber content can improve the strength,elastic modulus and Poisson’s ratio of the material.Too much content of steel fiber content would cause the phenomenon of agglomeration inside the concrete material,increase the interfacial transition zone and reduce its mechanical properties.The optimum steel fiber content under the ratio of alkali-activated slag concrete is 1.4%.

关 键 词：钢纤维碱矿渣混凝土 钢纤维掺量 抗压力学性能 最佳掺量 

分 类 号：TU528[建筑科学—建筑技术科学]