早期养护条件对水泥石碳硫硅钙石型硫酸盐腐蚀的影响

杨长辉; 张靖; 叶建雄; 吴芳; 陈科

doi:10.11835/j.issn.1674-4764.2010.02.025

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早期养护条件对水泥石碳硫硅钙石型硫酸盐腐蚀的影响

更新时间：2023-11-28

- 早期养护条件对水泥石碳硫硅钙石型硫酸盐腐蚀的影响
- Effect of Initial Curing Conditions on Thaumasite Form of Sulfate Attack of Cementitious Materials
- 土木与环境工程学报（中英文） 2010年32卷第2期页码：135-139
- 作者机构：
  
  重庆大学材料科学与工程学院,重庆,400045
- 作者简介：
- 基金信息：
  
  重庆市自然科学基金重点资助项目(CSTC2007BA7019)
- DOI：10.11835/j.issn.1674-4764.2010.02.025
  中图分类号：
- 纸质出版：2010
- 稿件说明：
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杨长辉, 张靖, 叶建雄, 等. 早期养护条件对水泥石碳硫硅钙石型硫酸盐腐蚀的影响[J]. 土木与环境工程学报（中英文）, 2010,32(2):135-139.

YANG Changhui, ZHANG Jing, YE Jianxiong, et al. Effect of Initial Curing Conditions on Thaumasite Form of Sulfate Attack of Cementitious Materials[J]. Journal of Civil and Environmental Engineering, 2010, 32(2): 135-139.
杨长辉, 张靖, 叶建雄, 等. 早期养护条件对水泥石碳硫硅钙石型硫酸盐腐蚀的影响[J]. 土木与环境工程学报（中英文）, 2010,32(2):135-139. DOI： 10.11835/j.issn.1674-4764.2010.02.025.

YANG Changhui, ZHANG Jing, YE Jianxiong, et al. Effect of Initial Curing Conditions on Thaumasite Form of Sulfate Attack of Cementitious Materials[J]. Journal of Civil and Environmental Engineering, 2010, 32(2): 135-139. DOI： 10.11835/j.issn.1674-4764.2010.02.025.

摘要

研究了早期高湿度空气养护、水中标准养护及密封养护对水泥石碳硫硅钙石型硫酸盐腐蚀的影响。采用X射线衍射 (XRD)、傅立叶转换红外光谱 (FTIR)和扫描电子显微镜(SEM)等方法分析了水泥石经180 d硫酸盐侵蚀后的腐蚀产物。结果表明，早期高湿度空气养护，水泥石碳化生成的CaCO3填充于孔隙中，使表层结构更加致密，阻碍了SO42-等有害离子侵入，延缓了水泥石碳硫硅钙石型硫酸盐腐蚀过程。比较而言，早期密封养护，水泥水化不充分，水泥石内部缺陷相对较多，SO42-等有害离子容易侵入，水泥石碳硫硅钙石型硫酸盐腐蚀最为严重。

Abstract

The effects of initial high humid aircuring

standard watercuring and sealedcuring on thaumasite form of sulfate attack (TSA) of cementbased materials were studied.The Erosion products after 180 days attack in sulfate solution were analyzed by the way of Xray diffraction(XRD) and fourier transform infrared spectroscopy(FTIR).And it was found that the TSA of the cement stone was delayed in high humid air resulting from that CaCO3 generated from carbonation was filled in the pores of the specimens

forming a compacted surface and restricting SO42- intrusion.In comparison

the extent of TSA of the specimens cured in sealed condition was most severe resulting from that large amount of interdefects in specimens for the lower hydration degree

and SO42- ions could intrude into specimens more easily.

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