摘要
用矿物掺合料部分取代水泥,设计制备了C45混凝土,结合扫描电镜,探究了掺合料掺量对C45混凝土性能与微观结构的影响,并明确其经济效益和碳排放特征。结果表明,胶凝材料用量为430 k/m3,矿物掺合料掺量为60%,在控制坍落度为200 mm,扩展度为485 mm的情况下,56 d抗压强度为74.2 MPa,原材料成本可减少34元/m3,碳排放减少162 kg/m3。
C45 concrete was prepared by using high content of mineral admixture and cement,and the effects of the mineral admixture on the performance and microstructure of C45 concrete were investigated by using scanning electron microscopy,and its economic benefits and CO 2 emission characteristics were clarified.The results demonstrated that the content of the mineral admixture was 60%and the content of cementitious material was 430 kg/m 3,the 56-day compressive strength was 74.2 MPa under the conditions of 200 mm slump and 485 mm slump flow,meeting the requirements of C45 concrete.Furthermore,the cost of raw material reduced by 34 yuan/m 3,and the CO 2 emission reduced by 162 kg/m 3.
作者
毛宁
贾碧胜
李仁双
蒋俊
周鑫
MAO Ning;JIA Bisheng;Li Renshuang;JIANG Jun;ZHOU Xin(State Key Laboratory of Environment-friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China;School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China;Sichuan Shudao Construction Technology Co.,Ltd.,Chengdu 641421,China)
出处
《四川建材》
2026年第2期5-9,共5页
Sichuan Building Materials
基金
四川省科技计划项目(2023YFG0379)
中央引导地方科技发展专项(24ZYCXCP0040)。
关键词
C45混凝土
碳排放
抗压强度
矿物掺合料
C45 concrete
CO 2 emission
compressive strength
mineral admixture
