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以钢渣、纸浆纤维为主要原材料碳化养护制备钢渣基固碳纤维水泥平板,研究了成型压力、水泥掺量、纸浆纤维掺量、水固比对其性能的影响。结果表明,成型压力为25 MPa时固碳纤维水泥平板的CO2吸收量和饱水抗折强度达到最佳;正交试验结果表明对CO2吸收量、饱水抗折强度、吸水率最关键的影响因素依次为水泥掺量、水固比、纸浆纤维掺量。钢渣碳化养护生成的碳酸钙填充了固碳纤维水泥平板的孔隙,增强了纸浆纤维与基体的界面结合力;碳化反应消耗了钢渣中游离的氧化钙,可解决钢渣安定性不良的问题。
Abstract:This study developed a CO2 sequestered fiber cement flat sheets using steel slag and pulp fiber as primary raw materials via carbonation curing. The influence of forming pressure,cement content,pulp fiber content,and water-solid ratio on its properties was investigated. The results demonstrated that under a forming pressure of 25 MPa,the CO2 sequestered fiber cement flat sheets achieved optimal CO2 uptake and water-saturated flexural strength. The results of the orthogonal experiment showed that the most critical influencing factors on CO2 absorption,saturated flexural strength,and water absorption were cement content,water to solid ratio,and pulp fiber content,respectively. The calcium carbonate generated from carbonation curing filled pores in the fiber cement flat sheets and strengthening interfacial bonding between pulp fibers and matrix. Additionally,carbonation curing consumed free calcium oxide in steel slag,effectively resolving the volume stability issues associated with steel slag.
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基本信息:
中图分类号:X757;TU525
引用信息:
[1]张程,骆静静,何柯瑶,等.碳化养护对钢渣基固碳纤维水泥平板性能的影响[J].新型建筑材料,2025,52(11):18-22+32.
基金信息:
国家重点研发计划项目(2022YFC3803105); 苏州市面向全球“揭榜挂帅”关键核心技术攻关项目(SZJB202505)
2025-11-25
2025-11-25