摘要
对混凝土透水砖性能的若干影响因素进行了试验,并通过改进的质量法和计算机断层扫描(Computed Tomography,简称CT)的方法对混凝土透水砖孔隙结构分布进行了定量计算。结果表明,骨灰比和水灰比为影响混凝土透水砖性能最为关键的因素,最佳骨灰比(以水泥掺量计)是25%,最佳水灰比是0.26;改进的质量法和计算机断层扫描的方法对混凝土透水砖孔隙度测定误差分别可控制在5%和3%。
Several factors affecting the performance of concrete permeable bricks were tested,and the pore structure distribution of concrete permeable bricks was quantitatively calculated by means of modified gravimetric method and computer tomography(CT).The results show that the aggregate-cement ratio and water-cement ratio are the most critical factors affecting the performance of concrete permeable bricks.The best aggregate-cement ratio(calculated based on the cement content)is 25%,and the best water-cement ratio is 0.26.The quantitative calculation error of concrete permeable bricks can be controlled at 5% and 3% by using the modified gravimetric method computer tomography respectively.
作者
叶强
李喜龙
梁莎
张元赏
杨家宽
YE Qiang;LI Xilong;LIANG Sha;ZHANG Yuanshang;YANG Jiakuan(Zhejiang Tiandi Environmental Protection Engineering Co.,Ltd.,Hangzhou 310000,China;School of Environmental Science and Engineering,Huazhong University of Science and Technology(HUST),Wuhan 430074,China)
出处
《混凝土》
CAS
北大核心
2022年第2期167-171,共5页
Concrete
基金
国家重点研发计划(2017YFC0703103)
湖北省自然科学基金重点项目(2020CFA042)
浙江省能源集团项目(ZN-KJ-18-018)。
关键词
混凝土透水砖
改进的质量法
计算机断层扫描
抗压强度
孔隙结构
透水系数
concrete permeable bricks
modified gravimetric method
computed tomography
compressive strength
pore structure
permeability coefficient
