土木与环境工程学报（中英文）2025，Vol.47Issue(3)：210-217,8.DOI:10.11835/j.issn.2096-6717.2023.046
地质聚合物砂浆凝结过程的超声波监测
Ultrasonic monitoring of coagulation process of geopolymer mortar
摘要
Abstract
Geopolymer is a kind of green and low-carbon cementing material,and the study of the cementation process of geopolymer is essential for engineering application.In order to investigate the mechanism of geopolymer cementation,five groups of geopolymer mortars with different mixture proportions(slag:fly ash)were placed in a special device and monitored them in real time by three ultrasonic inspection methods.The initial and final setting times of the geopolymer mortars were characterized by energy reception ratios and verified with the results of the penetration resistance method.The results demonstrated that the setting rate of the geopolymer mortar slows down with the decrease of mixture proportion.The ultrasonic transmission method could realized the whole monitoring of mortar.The mean error of initial setting time and final setting time of ultrasonic transmission method was 7.9%and 6.6%respectively.The reflection method has high accuracy in determining the initial setting time of the mortar,and its mean error was 2.8%.The ultrasonic guided wave method could realise the whole monitoring of the mortar.The mean error of the initial setting time and final setting time of ultrasonic transmission method was 3.3%and 2.5%respectively.Among the three methods,ultrasonic guided wave method is more suitable for monitoring the coagulation process of geopolymer mortar.关键词
地质聚合物/凝结时间/超声透射法/超声反射法/超声导波法/能量接收比Key words
geopolymer/setting time/ultrasonic transmission method/ultrasonic reflection method/ultrasonic guided wave method/energy receiving ratio分类
建筑与水利引用本文复制引用
龙士国,陈劲杰,李日进,周进毅,徐继同..地质聚合物砂浆凝结过程的超声波监测[J].土木与环境工程学报（中英文）,2025,47(3):210-217,8.基金项目
国家自然科学基金(11172258) National Natural Science Foundation of China(No.11172258). （11172258）
