华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (2): 116-120.

• 材料科学与技术 • 上一篇    下一篇

窑灰作为混凝土掺和料的水化特性

金雪莉1 曾令可1 何真2 税安泽1 骆祥宇3 李萍1   

  1. 1.华南理工大学 材料科学与工程学院,广东 广州 510640; 2. 武汉大学 水利水电学院,湖北 武汉 430072;3. 深圳罗建混凝土公司,广东 深圳 518055
  • 收稿日期:2006-01-19 出版日期:2007-02-25 发布日期:2007-02-25
  • 通信作者: 金雪莉(1979-),女,博士生,主要从事无机非金属材料研究. E-mail:jinxl02414@126.com
  • 作者简介:金雪莉(1979-),女,博士生,主要从事无机非金属材料研究.

Hydration Characteristics of Cement Kiln Dust as Cementitions Materials

Jin Xue-liZeng Ling-keHe ZhenShui An-zeLuo Xiang-yuLi Ping1   

  1. 1. School of Materials Science and Engineering, South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China;2. School of Water Resource and Hydropower, Wuhan Univ. , Wuhan 430072 , Hubei , China;3. Shenzhen Luojian Concrete Corp. , Shenzhen 518055 , Guangdong , China
  • Received:2006-01-19 Online:2007-02-25 Published:2007-02-25
  • Contact: 金雪莉(1979-),女,博士生,主要从事无机非金属材料研究. E-mail:jinxl02414@126.com
  • About author:金雪莉(1979-),女,博士生,主要从事无机非金属材料研究.

摘要: 以粉煤灰、矿渣和窑灰与普通硅酸盐水泥组成的复合体为试验对象,采用无电极电阻率测试仪、水化热测定法和扫描电镜(SEM) 等研究了不同体系的水化特性,并测定了砂装的抗折和抗压强度.研究结果表明,窑灰中的可溶性碱和硫酸盐成份,能为激发粉煤灰和矿渣的潜在活性提供必要的碱性环境,提高了大掺量混合材体系的早期强度.

关键词: 窑灰, 粉煤灰, 矿渣, 水化特性

Abstract:

In this paper , cement kiln dust (CKD) , fly ash and slag were mixed with Portland cement to compose a complex system. The hydration characteristics of the system were then investigated using a non-contacting resistivi-ty meter and by means of hydration heat test and SEM. Moreover , the folding resistance and compressive resistance of the mortar were measured. The results show that the water-soluble alkali and sulfate compounds in CKD provide an alkali environment for the activation of the latent activity of fly ash and slag , and help to improve the early-stage strength of the blending system with large doping amount.

Key words: cement kiln dust, fly ash, slag, hydration characteristic