[1]郑娟荣,张涛,覃维祖..碱-偏高岭土基胶凝材料的热稳定性研究[J].郑州大学学报(工学版),2004,25(04):16-19.[doi:10.3969/j.issn.1671-6833.2004.04.005]
　Zheng Juanrong,ZHANG Tao,Qin Weizu.Thermal stability study of alkali-metakaolin-based cementitious materials[J].Journal of Zhengzhou University (Engineering Science),2004,25(04):16-19.[doi:10.3969/j.issn.1671-6833.2004.04.005]

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碱-偏高岭土基胶凝材料的热稳定性研究()

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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

25卷

期数:

2004年04期

页码:

16-19

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Thermal stability study of alkali-metakaolin-based cementitious materials

作者:

郑娟荣; 张涛; 覃维祖.

郑州大学土木工程学院,河南,郑州,450002, 清华大学土木工程系,北京,100083

Author(s):

Zheng Juanrong; ZHANG Tao; Qin Weizu

关键词:

Geopolymer;  热稳定性;  剩余抗压强度;  差热分析;  热失重分析

Keywords:

Geopolymer;  thermal stability;  residual compressive strength;  differential thermal analysis;  Thermogravimetric analysis

DOI:

10.3969/j.issn.1671-6833.2004.04.005

文献标志码:

A

摘要:

将粉煤灰漂珠、G碱-偏高岭土基胶凝材料Geopolymer(普通水泥为对比样)和水按比例混合,成型为3 cm×3 cm×3 cm的试块并养护28 d;将试块在规定的温度和时间内煅烧,并用其剩余抗压强度来判断其热稳定性.试验结果表明: Geopolymer的剩余抗压强度随煅烧温度升高而提高,并从800 ℃到1 000 ℃呈现大幅度提高的趋势,而相应的普通水泥的剩余抗压强度随煅烧温度升高而下降.对Geopolymer和水泥的水化产物进行了差热分析和热失重分析,发现Geopolymer具有优良的热稳定性能,这可能是由Geopolymer特殊的水化产物而引起的.

Abstract:

Fly ash bleaching, G alkali-metakaolin-based cementitious material Geopolymer (ordinary cement as the contrast sample) and water were mixed in proportion to form 3 cm×3 cm×3 cm test blocks and cured for 28 days. The test block is calcined at a specified temperature and time, and its thermal stability is judged by its remaining compressive strength. The test results show that the residual compressive strength of Geopolymer increases with the increase of calcination temperature, and shows a significant increase trend from 800 °C to 1 000 °C, while the residual compressive strength of ordinary cement decreases with the increase of calcination temperature. Differential thermal analysis and thermogravimetric analysis of the hydration products of Geopolymer and cement were carried out, and it was found that Geopolymer had excellent thermal stability properties, which may be caused by the special hydration products of Geopolymer.

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