烧成温度对低热水泥性能的影响及其机理研究  

Effect of sintering temperature on performance of low-heat Portland cement and its mechanism

作　　者：李华[1,2] 吴笑梅[1,3] 樊粤明[1,3] 

机构地区：[1]华南理工大学材料学院 [2]广州市建筑材料工业研究所有限公司,广东广州510663 [3]华南理工大学特种功能材料及制备技术教育部重点实验室,广东广州510640

出　　处：《水泥》2007年第7期22-25,共4页Cement

摘　　要：检测了不同烧成温度制成的低热水泥的物理性能及水化速率,并采用岩相分析、XRD、EDS﹑化学分析方法研究了不同烧成温度对低热水泥熟料岩相结构﹑矿物组成、矿物晶型及矿物固溶组分的影响。结果表明,低温烧制的熟料中C4A3S的生成及C3A、C4AF含量相对较多是低温烧制的低热水泥早期强度较高的主要原因;而高温烧成的熟料中高温晶型C2S含量高,B矿中固溶SO3、Al2O3、Fe2O3多,B矿的Ca/Si增高,水化活性增大,这是高温烧成的低热水泥后期强度较高的主要原因。The physical properties and rate of hydration of low-heat Portland cement sintered with different temperature were studied. The effects of sintering temperature on the petrographic structure, mineral composition, crystalline phase and solid solubility solution composition of clinkers were studied by means of microscope, XRD, EDS and chemical analysis. The results showed that formation of C4A3S^- and higher content of C3A, C4AF in the clinker which was sintered with the relatively lower temperature were the main reasons to cause their higher early strength While in the clinkers sintered with higher temperature, the content of β-C2S,α-C2S and α＇-C2S in the clinker was higher than those sintered with lower temperature. And get more congruent SO3, Al2O3 and Fe2O3 to increase the Ca/Si in belite. Therefore, It might be the main reasons to cause higher long-term strength of high temperature sintered clinker.

关 键 词：烧成温度 低热水泥 固溶 矿物晶型 水化速率 

分 类 号：TQ172.12[化学工程—水泥工业]