全固废碱激发胶凝材料混凝土砖的制备及性能研究
Preparation and performance study of concrete bricks with full solid waste alkali-activated cementitious materials
关键词：
全固废碱激发胶凝材料；混凝土砖；抗压强度；吸水率；孔隙率；煤气化粗渣；细磨高炉矿渣；滤泥
Key words：
Full solid waste alkali-activated cementitious material; Concrete brick; Compressive strength; Water absorption rate; Porosity; Coarse coal gasification slag; Ground granulated blast furnace slag; Filter mud
刊期：
2025年第6期
DOI：
10.19761/j.1000-4637.2025.06.104.06
文章编号：
基金项目：
作者：
张翠敏1，王之敏1，王浩然1，李红真1，李万磊1，黄京立2，张秀芝2，*
单位：
1.山东正珩新材料科技有限责任公司，山东 济南 250000；2.济南大学 材料科学与工程学院，山东 济南 250022
摘要
摘 要：制备了碱激发煤气化粗渣（CCGS）-细磨高炉矿渣（GGBS）混凝土砖和碱激发CCGS-GGBS-水洗机制砂滤泥（WMS）混凝土砖，研究了CCGS取代率（0、30%、50%、70%、100%）和WMS取代率（0、10%、20%、30%、40%、50%）分别对碱激发CCGS-GGBS混凝土砖和碱激发CCGS-GGBS-WMS混凝土砖体积密度、吸水率、抗折强度、抗压强度和孔隙率的影响。结果表明：随着CCGS取代率的增加，混凝土砖的密实度降低，吸水率和孔隙率增大，体积密度、抗折和抗压强度降低；随着WMS取代率的增加，混凝土砖的流动度和体积密度降低，抗折和抗压强度均先增后降，吸水率和孔隙率均先降后增；当CCGS取代率为50%、WMS取代率为10%时，混凝土砖的体积密度、吸水率满足相关标准中的B级密度等级要求，抗压强度满足MU15强度等级要求。
Abstract: Alkali-activated coarse coal gasification slag(CCGS)-ground granulated blast furnace slag(GGBS) concrete bricks and alkali-activated CCGS-GGBS-water-washed manufactured sand filter mud(WMS) concrete bricks were prepared, and the effects of substitution rates(0, 30%, 50%, 70%, and 100%) of CCGS and the substitution rates(0, 10%, 20%, 30%, 40%, and 50%) of WMS on the bulk density, water absorption rate, flexural strength, compressive strength, and porosity of alkali-activated CCGS-GGBS concrete bricks and alkali-activated CCGS-GGBS-WMS concrete bricks were investigated, respectively. The results show that, as the substitution rate of CCGS increases, the compactness of concrete bricks decreases, the water absorption rate and porosity increase, and the bulk density, flexural and compressive strengths decrease. As the substitution rate of WMS increases, the fluidity and bulk density of concrete bricks decrease, the flexural and compressive strengths both first increase and then decrease, and the water absorption rate and porosity both first decrease and then increase. When the substitution rate of CCGS is 50% and the substitution rate of WMS is 10%, the bulk density and water absorption rate of the concrete bricks satisfy the requirements of the B density grade, and compressive strength satisfies the requirement of the MU15 strength grade in the relevant standards.
结论
（1）随着CCGS取代率的增加，混凝土砖的密实度降低，吸水率和孔隙率增大，体积密度、抗压和抗折强度降低。当CCGS取代率为50%时，混凝土砖的体积密度、吸水率满足GB/T 21144—2023中的B级密度等级要求，抗压强度满足MU7.5强度等级要求。综合考虑混凝土砖的各项性能，建议CCGS的取代率不宜超过50%。
（2）随着WMS取代率的增加，混凝土砖的流动度和体积密度降低，抗压和抗折强度均先增后降，吸水率和孔隙率均先降后增。当WMS取代率为10%时，混凝土砖的体积密度、吸水率满足GB/T21144—2023中的B级密度等级要求，抗压强度满足MU15强度等级要求。综合考虑混凝土砖的各项性能，建议WMS的最佳取代率为10%。
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引用本文
张翠敏,王之敏,王浩然,等.全固废碱激发胶凝材料混凝土砖的制备及性能研究[J].混凝土与水泥制品,2025(6):104-110.
ZHANG C M,WANG Z M,WANG H R,et al.Preparation and performance study of concrete bricks with full solid waste alkali-activated cementitious materials[J].China Concrete and Cement Products,2025(6):104-110.
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