[1]郑娟荣,杨长利,陈有志..碱激发胶凝材料抗硫酸盐侵蚀机理的探讨[J].郑州大学学报(工学版),2012,33(03):1-4.[doi:10.3969/j.issn.1671-6833.2012.03.001]
　ZHENG Juanrong,YANG Changli,CHEN Youzhi.Discussion on the Mechanism of the Resistance of Alkali-ActivatedCementing Material to External Sulfate Attack[J].Journal of Zhengzhou University (Engineering Science),2012,33(03):1-4.[doi:10.3969/j.issn.1671-6833.2012.03.001]
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碱激发胶凝材料抗硫酸盐侵蚀机理的探讨()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33
期数:
2012年03期
页码:
1-4
栏目:
出版日期:
2012-05-10

文章信息/Info

Title:
Discussion on the Mechanism of the Resistance of Alkali-ActivatedCementing Material to External Sulfate Attack
作者:
郑娟荣; 杨长利; 陈有志.
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):
ZHENG Juanrong; YANG Changli; CHEN Youzhi
School of Civil Engineering,Zhengzhou University,Zhengzhou 450001 ,China
关键词:
碱激发胶凝材料;  硫酸盐侵蚀;  干湿循环;  X射线衍射分析;  硫酸钠盐结晶
Keywords:
alkali-activated cementing material;  sulfate attack;  cycles of weting and drying;  X-ray diffraction analysis;  sodium sulfate salt-crystallization
分类号:
TQ172
DOI:
10.3969/j.issn.1671-6833.2012.03.001
摘要:
对碱-矿渣、碱-粉煤灰、碱—偏高岭土和普通硅酸盐水泥的抗硫酸盐侵蚀机理进行了探讨,其中用普通硅酸盐水泥作为对比样.采用实验室加速试验法(即干湿循环法),并对侵蚀后的碱激发胶凝材料的产物进行X射线衍射( XRD)分析.结果表明:在5％的硫酸钠溶液中,碱激发胶凝材料砂浆主要是由于环境中硫酸钠溶液浸入试块孔隙中,使盐结晶产生体积膨胀而破坏,而普通硅酸盐水泥砂浆主要是由于生成膨胀性产物石膏和硫酸钠盐结晶而破坏.
Abstract:
This paper diseusses on the mechanism of the resistance of alkali-activated slag, alkali-activatedfly-ash, alkali-activated metakaolinite and ordinary Portland cement used as control sample to exteral sulfateattack. Aecelerated test method (i. e. cycles of weting and drying ) and X-ray diffraction ( XRD) analysis ofthe products of alkali-activated cementing materials after external sulfate attack were used in this paper, ltdraws a conclusion that alkali-activated cementing material mortars are broken because of volume expansionproduced external sodium sulfate salt-crystallization in the pore of the mortars, while ordinary Portland cementmortar is broken because of forming gypsum and external sodium sulfate salt-crystallization with volume expan-sion in sodium sulfate solution of 5% concentration.

相似文献/References:

[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.[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(03):69.[doi:10.3969/j.issn.1671-6833.2008.04.017]
[2]金立兵,王振豪,武 甜,等.受压混凝土中硫酸根离子的扩散与损伤机理分析[J].郑州大学学报(工学版),2024,45(02):121.[doi:10.13705/j.issn.1671-6833.2024.02.012]
　JIN Libing,WANG Zhenhao,WU Tian,et al.Analysis of Sulfate Ion Diffusion and Damage Mechanism in Compressed Concrete[J].Journal of Zhengzhou University (Engineering Science),2024,45(03):121.[doi:10.13705/j.issn.1671-6833.2024.02.012]

更新日期/Last Update: 1900-01-01