微波养护对水泥砂浆性能与微观结构的影响

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中图分类号：TU528 文献标识码：A DOI： 10.7525/j.issn.1006-8023.2025.03.018

Abstract： Microwavecuring technology ofconcretecansignificantly improve theearly strength ofconcrete，butthere is no uniform design standard for microwavecuring method，resulting ingreat diffrences in material properties after curing.To explore the influence of microwave curing methods，this study employed the response surface methodology to systematicallyanalyze theinfluenceof microwavecuring methodon the compressivestrength ofcement mortar.Therelationship model between key microwave curing parameters and material properties was established，andthe optimal microwave curing method was determined when the heating temperature was under and the heating power was 1 Ooo W for 30 min.Chemical components and microstructure impacts were studied using X-ray diffaction （XRD），mercury intrusion porosimetry（MIP），and scaning electron microscope（SEM），and it was revealed thatareasonable microwave curing methodcan promote thehydration degreeof mortarand form adenser structure.The temperature variation in microwavecuring processwas analyzed bycombining experimentaldataand computer simulation，and it was found that microwavecuring temperature hadhotspot efect.Itisconcluded that microwave curing temperature is the most important factor affecting the strength of mortar.

Keywords：Response surface methodology；microwave curing；mortar； compressive strength；microstructure

0 引言

《2023年排放差距报告》显示，2022年温室气体排放量和大气中二氧化碳浓度创历史新高，建筑行业作为主要来源，排放占比达 3 3 % ，预计2050年将超 。（剩余19909字）