不同温度下低热混凝土强度及孔结构分形特征研究OA北大核心CSTPCD
Study on strength and pore structure fractal characteristics of low-heat concrete with different temperature
[目的]为探究真实温度环境下低热混凝土微观演化规律与宏观力学性能之间的关系,[方法]设计并开展了不同温度(20℃、30 ℃、40℃)作用下低热混凝土抗压强度和孔结构试验,基于扫描电镜(SEM)图像,结合盒维数法,计算得到了低热混凝土的分形维数,最后建立了考虑分形维数的抗压强度预测模型.[结果]结果显示:高温养护下,低热混凝土的临界孔径、最可几孔径和孔隙率降低,分形维数从1.796 8增加到1.886 8,28 d抗压强度增长了 27％.[结论]结…查看全部>>
[Objective]In order to explore the relationship between microscopic structure evolution law and macroscopic mechani-cal properties of low-heat concrete under real temperature environment,[Methods]the compressive strength and pore structure tests of low-heat concrete under different temperatures(20 ℃,30 ℃,40 ℃)were designed and carried out.Based on the scanning electron microscope(SEM)images,the fractal dimension of low-heat concrete was calculated by t…查看全部>>
关彬;陈博夫;刘硕
河海大学水利水电学院,江苏南京 210098三峡大学水利与环境学院,湖北宜昌 443002湖北能源集团南漳张家坪抽水蓄能公司,湖北襄阳 441500
土木建筑
低热混凝土温度孔结构分形维数预测模型力学性能
low-heat concretetemperaturepore structurefractal dimensionprediction modelmechanical properties
《水利水电技术（中英文）》 2024 (7)
173-185,13
国家自然科学基金青年项目(52109158)
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