微波養(yǎng)護對水泥砂漿性能與微觀結(jié)構(gòu)的影響

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中圖分類號：TU528 文獻標識碼：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年排放差距報告》顯示，2022年溫室氣體排放量和大氣中二氧化碳濃度創(chuàng)歷史新高，建筑行業(yè)作為主要來源，排放占比達 3 3 % ，預(yù)計2050年將超 。（剩余19909字）