硅酸盐通报2025，Vol.44Issue(4)：1386-1397,12.DOI:10.16552/j.cnki.issn1001-1625.2025.0002
电解锰渣基绿色混凝土性能及环境效应分析
Analysis of Performance and Environmental Effect of Electrolytic Manganese Residue-Based Green Concrete
摘要
Abstract
To enhance the resource utilization efficiency of electrolytic manganese residue(EMR),this study used EMR-based cementitious materials in conjunction with EMR tailings sand and EMR-based ceramsite to prepare EMR-based green lightweight aggregate concrete(EGLAC)and permeable concrete(EGPC).The study primarily investigated their strength,pore characteristics,and environmental impact effects.The results indicate that the multi-level collaborative resource utilization of EMR can successfully produce high-performance and low-carbon-emission EMR-based green concrete.Both EGPC and EGLAC show significant increases in compressive strength and dynamic elastic modulus with prolonged curing age.The 28 d compressive strengths of EGPC and EGLAC are 22.5 and 48.5 MPa,and their permeability coefficients are 1.8 and 5.2 × 10-9 mm/s,respectively.The permeability coefficient of EGLAC and EGPC decreases with curing age,and shows an exponential decrease in relation to strength.This is primarily attributed to the optimization of pore structure through the hydration of EMR-based cementitious materials and the improvement of the interface bonding between aggregates and the matrix.Compared with conventional C30 and C50 concrete,EGLAC's carbon emissions are reduced by 48.1％and 60.2％,respectively.After the collaborative optimization of carbon source and energy processes,EGLAC's carbon emissions are reduced by 92.9％and 94.6％,respectively.Compared with conventional permeable concrete,before collaborative optimization,EGPC's carbon emissions can be reduced by 55.2％,and after collaborative optimization,EGPC's carbon emissions can be reduced by 93.3％.This study provides significant guidance for the efficient and graded resource utilization of EMR in building materials.关键词
电解锰渣/绿色混凝土/环境影响评估/界面黏结/碳排放量Key words
electrolytic manganese residue/green concrete/environmental impact assessment/interfacial bonding/carbon emission分类
建筑与水利引用本文复制引用
王凡,龙广成,白敏,石莹莹..电解锰渣基绿色混凝土性能及环境效应分析[J].硅酸盐通报,2025,44(4):1386-1397,12.基金项目
湖南省重点研发项目(2020wk2005) （2020wk2005）
