锂渣-石灰石粉-水泥复合胶凝材料的性能  

Characteristics of Lithium Slag-Limestone Powder-Cement Composite Cementitious Materials

作　　者：巫昊峰[1] WU Hao-feng(Department of Construction Engineering Management,Guangdong Construction Polytechnic,Guangzhou 510440,China)

机构地区：[1]广东建设职业技术学院建筑工程管理系,广州510440

出　　处：《硅酸盐通报》2018年第9期2899-2903,共5页Bulletin of the Chinese Ceramic Society

基　　金：湖南省科技计划发展项目(2006sk4017)

摘　　要：通过测试不同龄期硬化净浆抗压强度、化学结合水和扫面电镜(SEM)微观形貌,研究了双掺锂渣和石灰石粉对复合胶凝材料水化性能的影响。结果表明,双掺锂渣和石灰石粉降低了硬化净浆的早期抗压强度,双掺15%锂渣和15%石灰石粉的试件后期强度超过了基准试件;双掺锂渣和石灰石粉对不同龄期硬化净浆化学结合水和抗压强度的影响相近,两者具有较好的对应关系;双掺锂渣和石灰石粉劣化了硬化净浆早期内部结构,但两者适量的掺量比例有助于改善其后期内部结构。The effect of a mixture of limestone powder and lithium slag on the hydration characteristics of cement pastes was studied by testing the compressive strength,chemically combined water and microstructure of scanning electron microscope(SEM)of hardened cement paste at the different ages.The results indicate that a mixture of limestone powder and lithium slag reduces the early compressive strength of hardened cement paste,however,the later strength of the specimen containing 15%lithium slag and 15%limestone powder is more than that of the controlled specimen.The effect of a mixture of limestone powder and lithium slag on the chemically combined water of hardened cement paste at the different ages is similar to that on the compressive strengths,showing a good corresponding relationship.A mixture of limestone powder and lithium slag degrades the early internal structure of hardened cement paste,but the added appropriate proportions of both can help to improve the later internal structure.

关 键 词：锂渣 石灰石粉 水化 化学结合水 微观形貌 

分 类 号：TU528[建筑科学—建筑技术科学]