碱-硅反应产物的微观形貌特征研究

长江科学院院报 ›› 2012, Vol. 29 ›› Issue (3): 62-66.

碱-硅反应产物的微观形貌特征研究

李珍 ^a,b ，肖靓 ^a，陈亮 ^{a, b}

长江科学院 a.材料结构研究所；b. 水利部水工程安全与病害防治工程技术研究中心，武汉 430010

收稿日期:2011-03-08 出版日期:2012-03-01 发布日期:2012-05-15
基金资助:
水利部公益性行业专项项目（200801057）

Microscopic Appearance of the Products of Alkali-Silica Reaction (ASR)

LI Zhen, XIAO Liang, CHEN Liang

Yangtze River Scientific Research Institute, Wuhan 430010, China

Received:2011-03-08 Online:2012-03-01 Published:2012-05-15

摘要/Abstract

摘要： 选取4种具有代表性的活性硅质岩石，在80℃，1 mol/L NaOH溶液中浸泡7 d和14 d，采用扫描电子显微镜（SEM）和X射线能谱仪（EDS），对其碱-硅反应（ASR）产物的微观形貌性状和组成进行深入研究。通过ASR产物与混凝土芯样中的水泥水化产物的对比分析，确定了ASR产物的典型微观形貌，为准确诊断混凝土ASR的发生提供了重要的科学依据。

关键词: 碱-硅反应（ASR）, 扫描电子显微镜（SEM）, X射线能谱仪（EDS）, 典型微观形貌

Abstract: Scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) were used to examine the microscopic appearance of Alkali-Silica Reaction (ASR) products. Four typical active siliceous rocks were immerged in 1 mol/L NaOH solution at 80℃ for 7 days and 14 days. SEM photos and EDS results of ASR products were analyzed. The typical microstructure and components of ASR products were determined, and the differences between ASR products and cement hydration products in cement core sample were found out by comparisons. The study provided scientific basis for diagnosing ASR in concrete.

Key words: ASR, SEM, EDS, typical microscopic appearance

中图分类号:

TV698.2

李珍, 肖靓, 陈亮. 碱-硅反应产物的微观形貌特征研究[J]. 长江科学院院报, 2012, 29(3): 62-66.

LI Zhen, XIAO Liang, CHEN Liang. Microscopic Appearance of the Products of Alkali-Silica Reaction (ASR)[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2012, 29(3): 62-66.

[1]	李珍 ，肖靓，汪在芹 . 丹江口大坝混凝土芯样的微观测试与分析[J]. 长江科学院院报, 2011, 28(5): 59-62.
[2]	杜科，韩炜，李珍，汪在芹 . 护坡沙枕防老化涂层材料耐老化性能试验研究[J]. 长江科学院院报, 2011, 28(1): 58-60.