STUDY ON THE MECHANISM OF MINERAL ADMIXTURES TO SUPPRESS ALKALI-SILICA REACTION

Feng Xiaoxin; Feng Naiqian

doi:10.13204/j.gyjz200511021

Volume 35 Issue 11

Dec. 2014

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Abstract

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2005 > 35(11): 70-73

SHEN Tong, XU Haixiang, YANG Xinguang, SONG Zhengfeng, LIU Kai, ZHAO He, ZHANG Haiming. DISPLACEMENT ANALYSIS FOR STRUCTURAL INTEGRITY TEST OF CONTAINMENT OF HPR1000 NUCLEAR POWER PLANT[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(12): 1-6. doi: 10.13204/j.gyjzG21120605

Citation:

Feng Xiaoxin, Feng Naiqian. STUDY ON THE MECHANISM OF MINERAL ADMIXTURES TO SUPPRESS ALKALI-SILICA REACTION[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(11): 70-73. doi: 10.13204/j.gyjz200511021

Citation:

Feng Xiaoxin, Feng Naiqian. STUDY ON THE MECHANISM OF MINERAL ADMIXTURES TO SUPPRESS ALKALI-SILICA REACTION[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(11): 70-73. doi: 10.13204/j.gyjz200511021

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STUDY ON THE MECHANISM OF MINERAL ADMIXTURES TO SUPPRESS ALKALI-SILICA REACTION

doi: 10.13204/j.gyjz200511021

Feng Xiaoxin¹,
Feng Naiqian¹

1.
1. College of Materials Science and Technology,Hebei Polytechnic University Tangshan 063009;
2.
2. Department of Civil Engineering,Tsinghua University Beijing 100084

Received Date: 2005-04-19
Publish Date: 2005-11-20

Abstract

Abstract

The mechanism of mineral admixtures on suppressing alkali-silica reaction has been studied through analyzing the pore solution and observing the surface of aggregates in mortar bars with scanning electron microscope(SEM).The results show that when mineral admixtures are used in the concrete, not only the alkali concentration in the pore solution can be reduced, but also the diffusion of alkali ions from the outside of concrete to the inside can be prevented, and the diffusion of alkali ions from the pore solution to the surface of the aggregates can also be prevented.So the attack of alkalis to aggregates is reduced, and the alkali-silica reaction is suppressed.
- concrete, alkali-silica reaction(ASR), mineral admixtures, suppressing mechanism,

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References(3)

References

ASTM C1260-94 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)

[2] ASTM C311-94b Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use as a Mineral Admixture in Portland-Cement Concrete

[3] Uchikawa H, Uchida S, Dgawa K. 混合材的性质对Na、Cl离子在混合水泥硬化体中扩散的影响. 见:中国建筑材料科学研究院,水泥科学研究所技术情报中心.第八届国际水泥化学会议论文集--水泥化学主报告.第二卷(下册). 北京:1987.140～147

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