EFFECT OF ADMIXTURES ON THE PERFORMANCE OF CEMENT AND CONCRETE

Mo Xiangyin; Wang Keyu

doi:10.13204/j.gyjz200408015

Volume 34 Issue 8

Dec. 2014

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Mo Xiangyin, Wang Keyu. EFFECT OF ADMIXTURES ON THE PERFORMANCE OF CEMENT AND CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(8): 44-46,61. doi: 10.13204/j.gyjz200408015

Citation:

Mo Xiangyin, Wang Keyu. EFFECT OF ADMIXTURES ON THE PERFORMANCE OF CEMENT AND CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(8): 44-46,61. doi: 10.13204/j.gyjz200408015

Mo Xiangyin, Wang Keyu. EFFECT OF ADMIXTURES ON THE PERFORMANCE OF CEMENT AND CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(8): 44-46,61. doi: 10.13204/j.gyjz200408015

Citation:

Mo Xiangyin, Wang Keyu. EFFECT OF ADMIXTURES ON THE PERFORMANCE OF CEMENT AND CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2004, 34(8): 44-46,61. doi: 10.13204/j.gyjz200408015

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EFFECT OF ADMIXTURES ON THE PERFORMANCE OF CEMENT AND CONCRETE

doi: 10.13204/j.gyjz200408015

1.
Materials Science Key Laboratory of Analysis and Testing Center,Nanjing Normal University Nanjing 210097

Received Date: 2004-01-28
Publish Date: 2004-08-20

Abstract

Abstract

At 80 e curing condition, alkali aggregate reaction expansion could be long- term effectively inhibited by Li2CO3 at the alkali content of 21 5%. Also, the higher the alkali reactivity of the aggregate was, the better the inhibiting effect of Li2CO3 showed.To the mortars with Li2CO3 at the same Li/Na molar ratio, the inhibiting effect was raised when the alkali reactivity of the aggregate was increased. To the mortars with zeolitization perlite, if alkali aggregate reaction expansion was inhibited effectively, the effect of Li2CO3 on expansion was not raised correspondingly when the LiPNa molar ratio was further increased. In addition, both the compressive strength and the flexural strength of the mortars would decrease when Li2CO3 was added. The more Li2CO3 was added, the more the strength would decrease. At the same alkali content conditions, the initial and final setting time of cement was shortened when Li2CO3 was added and the higher the LiPNa molar ratio of Li2CO3 was, the shorter the setting time was.
- alkali-aggregate reaction,
- lithium compound,
- alkali reactivity of aggregate,
- alkali content,
- added content

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References(11)

References

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