硅酸盐通报2025，Vol.44Issue(2)：579-589,11.DOI:10.16552/j.cnki.issn1001-1625.2024.0963
多源固废基高贝利特铁铝酸盐水泥的制备及其性能
Preparation and Properties of Multi-Source Solid Waste-Based High Belite Ferroaluminate Cement
摘要
Abstract
This study utilized carbide slag,steel slag,desulfurization gypsum,and fly ash as primary raw materials,with bauxite as the corrective material,to synthesize high belite ferroaluminate cement(HBFAC).A comprehensive analysis including thermogravimetric analysis(TGA),burnability analysis,X-ray diffraction(XRD)analysis,heat of hydration analysis,scanning electron microscopy(SEM),and mechanical property tests was conducted to systematically investigate the sintering performance and hydration behavior of solid waste-based HBFAC clinker with varying belite content.The results show that the mineral formation temperature range of solid waste-based HBFAC clinker is between 1 220 ℃ and 1 340 ℃,with an optimal calcination temperature of 1 300 ℃,which is 25 ℃ to 100℃lower than that of conventional sulfoaluminate cement(SAC)clinker.The optimal holding time is 30 min.Under optimal calcination conditions,solid waste-based HBFAC clinker exhibits well-developed and uniformly distributed crystals,with a setting time delayed by approximately 20～30 min compared to SAC.The solid waste-based HBFAC exhibits characteristics of rapid setting and hardening,early high strength,sustained strength growth at later stages,and low heat of hydration.Its compressive strength is superior to that of SAC and ordinary Portland cement(OPC).The main hydration products include ettringite(AFt),monosulfate(AFm),aluminum hydroxide gel(AH3),and hydrated calcium aluminosilicate(C-A-S-H).Compared to tetracalcium aluminate sulfate(C4 A3 S),dicalcium silicate(C2 S)hydrates more slowly,contributing to the continued strength development of HBFAC in the later stage.关键词
多源固废/高贝利特铁铝酸盐水泥/烧成制度/力学性能/水化性能Key words
multi-source solid waste/high belite ferroaluminate cement/firing system/mechanical property/hydration property分类
化学化工引用本文复制引用
李相国,龚志雄,马伟男,李树国,张呈山,但建明,吕阳..多源固废基高贝利特铁铝酸盐水泥的制备及其性能[J].硅酸盐通报,2025,44(2):579-589,11.基金项目
兵团重点科技攻关计划(2023AB013-03) （2023AB013-03）
八师石河子市科技计划项目(2022GY01) （2022GY01）
