王 震1,2,周文嘉3,李有财4,朱亮亮3,*,刘立熙5,*,陈 曦6
王震,周文嘉,李有财,等.CO2矿化养护建筑垃圾再生砖的性能研究[J].混凝土与水泥制品,2023(9):86-89.
WANG Z,ZHOU W J,LI Y C,et al.Study on properties of construction waste recycled bricks with CO2 mineral curing[J].China Concrete and Cement Products,2023(9):86-89.
CO2矿化养护建筑垃圾再生砖的性能研究
王 震1,2,周文嘉3,李有财4,朱亮亮3,*,刘立熙5,*,陈 曦6
王震,周文嘉,李有财,等.CO2矿化养护建筑垃圾再生砖的性能研究[J].混凝土与水泥制品,2023(9):86-89.
WANG Z,ZHOU W J,LI Y C,et al.Study on properties of construction waste recycled bricks with CO2 mineral curing[J].China Concrete and Cement Products,2023(9):86-89.
摘 要:以建筑垃圾为主要原材料制备了建筑垃圾再生砖,研究了CO2矿化养护时间(2、6、12、24 h)和CO2浓度(20%、30%、50%)对建筑垃圾再生砖抗压强度和固碳率的影响。结果表明:随着CO2矿化养护时间的增加,试件的抗压强度和固碳率增大;随着CO2浓度的增加,试件的抗压强度在CO2矿化养护6 h内呈增大趋势,在CO2矿化养护12 h后呈先增大后减小的趋势;试件的固碳率随着CO2浓度的增加而增大;综合考虑成本、抗压强度和固碳率,推荐CO2矿化养护时间为12 h,CO2浓度为20%。
Abstract: Using construction wastes as the main raw materials, the construction waste recycled bricks were prepared. The effects of CO2 mineral curing time (2, 6, 12, 24 h) and CO2 concentration (20%, 30%, 50%) on the compressive strength and carbon sequestration rate of construction waste recycled bricks were studied. The results show that as the CO2 mineral curing time increases, the compressive strength and carbon sequestration rate of the specimens increase. With the increase of CO2 concentration, the compressive strength of the specimen shows an increasing trend within 6 hours of CO2 mineral curing, and a first increasing and then decreasing trend after 12 hours of CO2 mineral curing. The carbon sequestration rate of the specimen increases with the increase of CO2 concentration. Taking into account cost, compressive strength, and carbon sequestration rate, it is recommended that the CO2 mineral curing time is 12 hours and the CO2 concentration is 20%.
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