轻质高强陶粒混凝土制备与路用性能试验研究  

Experimental Study on Preparation and Road Performance of Lightweight High Strength Ceramsite Concrete

作　　者：王欣 WANG Xin(School of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming Yunnan 650500,China;Northwest Branch of General Contracting Company of China Construction Seventh Engineering Bureau,Xian Shaanxi 710000,China)

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500 [2]中建七局总承包公司西北分公司,陕西西安710000

出　　处：《当代化工》2023年第8期1779-1782,1792,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金,硫酸盐环境多因素耦合作用活性粉末混凝土损伤劣化研究(项目编号:51608041)。

摘　　要：为了分析轻质高强陶粒混凝土的路用性能,选取碎石型陶粒制备了不同掺合料添加的轻质高强陶粒混凝土试件,掺合料中硅灰与矿渣的质量比为1∶2。开展了混凝土的抗压、抗折、抗渗、干燥收缩、抗冻等性能测试,研究了轻质高强陶粒混凝土路用性能随掺合料质量比的变化规律。研究结果表明:当掺合料替换水泥量为15%~20%时,轻质高强陶粒混凝土的抗压性能和抗折性能最佳;当掺合料替换水泥量为15%以上时,轻质高强陶粒混凝土的抗渗性能最优;掺合料添加对轻质高强陶粒混凝土的干燥收缩率的影响较小;掺合料替换水泥量为20%左右条件下轻质高强陶粒混凝土的抗冻性能最好。In order to analyze the road performance of lightweight high-strength ceramsite concrete,the gravel ceramsite was selected to prepare lightweight high-strength ceramsite concrete specimens with different admixtures,and the mass ratio of silica fume to slag in the admixtures was 1:2.The performance tests of concrete,such as compressive resistance,flexural resistance,permeability resistance,drying shrinkage and frost resistance,were carried out,and the variation law of road performance of lightweight high strength ceramsite concrete with the mass ratio of admixtures was studied.The results showed that,when the amount of admixture replacing cement was 15%~20%,the compressive and flexural properties of lightweight high strength ceramsite concrete were the best;When the amount of admixture replacing cement was more than 15%,the anti-permeability of lightweight high-strength ceramsite concrete was the best;The addition of admixtures had little effect on the drying shrinkage of lightweight high strength ceramsite concrete;The frost resistance of lightweight high strength ceramsite concrete was the best when the cement content of admixture replacement was about 20%.

关 键 词：陶粒混凝土 抗压性能 抗折性能 抗渗性能 干燥收缩性能 抗冻性能 

分 类 号：TQ178[化学工程—硅酸盐工业]