磨细矿渣对现场活性骨料碱-硅反应的抑制

长江科学院院报 ›› 2011, Vol. 28 ›› Issue (2): 56-59.

磨细矿渣对现场活性骨料碱-硅反应的抑制

唐修生 ^1,2，黄国泓^1,2，祝烨然 ^1,2

1. 南京水利科学研究院瑞迪高新技术公司，南京 210024 ； 2. 水利部水工新材料工程研究中心，南京 210029

出版日期:2011-02-01 发布日期:2012-09-26

Inhibition of Ground Slag on Alkaline Silica Reaction of Field Active Aggregate

TANG Xiu-sheng ^1,2 ， HUANG Guo-hong ^1,2， ZHU Ye-ran ^1,2

1. R-D High Technology Co., Nanjing Hydraulic Research Institute, Nanjing 210029, China ； 2. Research  Center on New Materials in Hydraulic Structures, Ministry of Water Resources, Nanjing 210029, China

Online:2011-02-01 Published:2012-09-26

摘要/Abstract

摘要： 研究了不同掺量磨细矿渣对现场活性骨料碱硅反应的抑制效能，并与普通砂浆进行对比。结果表明：磨细矿渣对骨料碱硅反应的抑制作用，随磨细矿渣掺量的增加而增强，当磨细矿渣掺量达到 50% 及以上时，砂浆试件 28d 膨胀率小于 0.10% 。压滤试验和能谱分析充分解释了磨细矿渣对活性骨料碱 - 硅反应的抑制机理，抑制机理主要是孔溶液中 K+,Na+ 浓度的降低和水化产物中低 n（Ca ）/n（ Si ）比的 C-S-H 凝胶的形成。

关键词: 磨细矿渣 , 碱-硅反应 , 抑制效能 , 机理分析

Abstract: Inhibition effect of different volume of ground slag （GSL） on alkaline silica reaction of field active aggregate was studied, and compared with normal mortar. The results show that the inhibiting effect enhanced with increasing ground slag, and while the added volume is up to and more than 50%, the expansion rate of the mortar specimens is less than 0.10% after its curing time of 28 days. The inhibition mechanism of ground slag on the alkaline silica reaction is well expounded by press filtration test and energy dispersive spectroscopy (EDS) analysis. That is, the increase of groud slag can make the content of K+ and Na+ in pore solution and the ratio of n(Ca) to n(Si) in C-S-H Gel decrease.

Key words: ground slag , alkaline silica reaction , inhibiting effect , mechanism analysis

中图分类号:

TU528.0

唐修生 ，黄国泓 ，祝烨然 . 磨细矿渣对现场活性骨料碱-硅反应的抑制[J]. 长江科学院院报, 2011, 28(2): 56-59.

TANG Xiu-sheng ， HUANG Guo-hong ， ZHU Ye-ran . Inhibition of Ground Slag on Alkaline Silica Reaction of Field Active Aggregate[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2011, 28(2): 56-59.

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