氧化镁-粉煤灰-水泥复合固化剂对碳化加固土性能影响的探究

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中图分类号：TU43 文献标识码：A文章编号：1672-3791（2026）04-0125-05

Explorationof the EffectofMgO-Fly Ash-Portland Cement Composite Curing Agent on the Properties of CarbonizedReinforced Soil

ZHUANG Yun CAI Ailin1 ZHU Rui WENG Qijun² CAI Guanghua²

1.Jiangsu Zhenjiang Road and Bridge Engineering Co.，Ltd.， Zhenjiang， Jiangsu Province， 212Ooo China;

2.College ofCivilEngineering，Nanjing Forestry University，Nanjing，Jiangsu Province，21oo37China Abstract： To address the shortcomings of traditional cement in terms of high resource consumption and carbon emisions，and to promote the transformation of civil engineering materials towards green and low-carbon，this study proposes the use of MgO- fly ash-portland cement， composite curing agent to carbonize and reinforce soil. A preliminary investigation was conducted into the effects ofthe composite curing agent ratio and carbonation time on the physical and mechanical properties ofloes.The results indicate that after7days of curing，the sample quality slightly decreased; After carbonation， the sample massincreases in the order of MgO> portland cement>fly ash，and the unconfined compresive strength increases with carbonation time;Fly ashand cement played a dominant role in strength development during the curing period; During the carbonization stage，MgO makes a significant contributiontothe development of strength.This studyclarifies theroleof theMgO-flyash-portland cement composite curing agent in soil stabilization，and provides parameter basis and technical reference for reducing the useof traditional cement in geotechnical engineering practice.

Keywords： MgO; Fly ash; Cement; Carbonation solidification; Unconfined compressive strength

粉煤灰是我国煤电行业最主要的固体废弃物，年产量已超6亿t且逐年增长[1]。（剩余4450字）