地质聚合物砂浆凝结过程的超声波监测

打开文本图片集

中图分类号：TU525.9 文献标志码：A 文章编号：2096-6717（2025）03-0210-08

Ultrasonic monitoring coagulation process geopolymer mortar

LONG Shiguo CHEN Jinjie LI Rijin ZHOU Jinyi XU Jitong

Abstract： Geopolymer is a kind green and low-carbon cementing material，and the study the cementation process geopolymer is essential for engineering application.In order to investigate the mechanism geopolymer cementation，five groups 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 seting times the geopolymer mortars were characterized by energy reception ratios and verifiedwith the results the penetration resistance method.The results demonstrated that the setting rate the geopolymer mortar slows down with the decrease mixture proportion. The ultrasonic transmission method could realized the whole monitoring mortar.The mean error initial seting time and final setting time ultrasonic transmission method was 7.9% and 6.6% respectively. The reflection method has high accuracy in determining the initial setting time the mortar，and its mean error was 2.8% . The ultrasonic guided wave method could realise the whole monitoring the mortar.The mean eror the initial setting timeand final setting time 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 geopolymer mortar.

Keywords： geopolymer；setting time；ultrasonic transmission method； ultrasonic reflection method； ultrasonic guided wave method;energy receiving ratio

地质聚合物是以含有硅铝酸盐活性组分的工业固体废弃物为前驱体，在碱激发剂的作用下制备而成的一种无机胶凝材料[]。（剩余12463字）