摘要
在聚灰比为0、1%、3%、5%的情况下,研究了丁苯橡胶对泡沫混凝土干密度和抗折、抗压强度的影响,并通过显微图像处理和SEM从孔结构角度分析了丁苯橡胶对泡沫混凝土的改性机理。结果表明:随着聚灰比的增加,泡沫混凝土的孔隙率和平均孔径均呈先增后减的趋势,孔隙圆度值略有降低,导致干密度和抗压强度均先减小后增大,抗折强度先略有降低后快速增大。
The effects of styrene-butadiene rubber on the dry density,flexural strength and compressive strength of foamed concrete were studied when the polymer-cement ratio was 0,1%,3%and 5%,and the modification mechanism of styrene-butadiene rubber on foamed concrete was analyzed from the perspective of pore structure by microscopic image processing and SEM.The results show that with the increase of polymer-cement ratio,the porosity and average pore size of foamed concrete increase first and then decrease,and the porosity roundness value decreases slightly,resulting in the dry density and compressive strength decrease first and then increase,and the flexural strength decreases slightly first and then increases rapidly.
作者
伍怡璇
李静
黄子锐
欧阳启健
孙浩翔
呼浩楠
WU Yi-xuan;LI Jing;HUANG Zi-rui;OUYANG Qi-jian;SUN Hao-xiang;HU Hao-nan(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China)
出处
《混凝土与水泥制品》
2023年第1期66-69,73,共5页
China Concrete and Cement Products
基金
广东省科学厅自然科学基金项目
广东大学生科技创新培育专项资金项目(pdjh2022b0036)。
关键词
丁苯橡胶
泡沫混凝土
孔结构
膜结构
干密度
力学性能
微观分析
Styrene-butadiene rubber
Foamed concrete
Pore structure
Membrane structure
Dry density
Mechanical property
Micro analysis
