[1]姚振亚,郑娟荣,刘丽娜..碱激发胶凝材料化学收缩或膨胀的试验研究[J].郑州大学学报(工学版),2008,29(04):69-72.[doi:10.3969/j.issn.1671-6833.2008.04.017]
　Yao Zhenya,Zheng Juanrong,Liu Lina.Experimental study of chemical shrinkage or expansion of alkali-inspired cementitious materials[J].Journal of Zhengzhou University (Engineering Science),2008,29(04):69-72.[doi:10.3969/j.issn.1671-6833.2008.04.017]

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碱激发胶凝材料化学收缩或膨胀的试验研究()

分享到：

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

卷:

29

期数:

2008年04期

页码:

69-72

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Experimental study of chemical shrinkage or expansion of alkali-inspired cementitious materials

作者:

姚振亚; 郑娟荣; 刘丽娜.

郑州大学土木工程学院,河南,郑州,450001, 郑州大学土木工程学院,河南,郑州,450001, 郑州大学土木工程学院,河南,郑州,450001

Author(s):

Yao Zhenya; Zheng Juanrong; Liu Lina

关键词:

碱激发胶凝材料;  化学收缩;  无定形类沸石;  NH4+离子交换容量

Keywords:

alkali-excited cementitious materials;  chemical shrinkage;  amorphous zeolites;  NH4+ ion exchange capacity

DOI:

10.3969/j.issn.1671-6833.2008.04.017

文献标志码:

A

摘要:

对碱激胶凝材料与水-水泥体系的化学收缩或膨胀进行了试验研究,其中水-水泥体系为对比样.结果表明:室温(20±1)℃条件下,水-水泥体系、碱激发矿渣和碱激发粉煤灰体系都发生化学收缩,且其收缩值随反应龄期的延长而增加;在相同的龄期,水-水泥体系的化学收缩最大.碱激发矿渣体系的化学收缩最小;碱激发偏高岭土体系发生化学膨胀,且其膨胀值随反应龄期的延长而增加;碱激发偏高岭土的反应产物是无定形类沸石(因为具有沸石的NH4+离子交换性质),其中低聚合度的产物对化学膨胀有很大贡献;碱激发矿渣体系和碱激发粉煤灰体系的主要反应产物的性质与水泥产物的性质相似,但是存在少量无定形类沸石,这对化学收缩有部分抵消作用.

Abstract:

The chemical shrinkage or expansion of alkali-jerked cementitious material and water-cement system was experimentally studied, and the water-cement system was used as a contrast sample. The results showed that chemical shrinkage occurred in the water-cement system, alkali-excited slag and alkali-excited fly ash system at room temperature (20±1)°C, and the shrinkage value increased with the extension of reaction age. The chemical shrinkage of the water-cement system is greatest at the same age. The chemical shrinkage of alkali-excited slag systems is minimal; Chemical expansion occurred in alkali-inspired metakaolin system, and its expansion value increased with the extension of reaction age. The reaction product of alkali excitation metakaolin is amorphous zeolites (because of the NH4+ ion exchange properties of zeolite), in which the products with low polymerization degree contribute greatly to chemical expansion; The properties of the main reaction products of alkali-excited slag system and alkali-excited fly ash system are similar to those of cement products, but there is a small amount of amorphous zeolite, which partially counteracts chemical shrinkage.

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