Suppressing Expansion Due to Alkali-Aggregate Reaction by Using Limestone Powder

Ding Yan Wu; Kun he Fang; Yong he Liu

doi:10.4028/www.scientific.net/AMR.168-170.40

Paper Titles

Analysis for the Shake Table Test of Rammed Earth Wall Panels
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Cement Hydration Kinetics Research Based on the Multi-Phase Hydration Model
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Cement Chemical Shrinkage Prediction Model Research Based on the Mineral Composition Content of Each Phase at Early Age
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Deterioration Evolutive Process of Cement-Based Materials under Sulphate Physical Crystallization Attack
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Suppressing Expansion Due to Alkali-Aggregate Reaction by Using Limestone Powder
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The Effect of Salt Admixtures on Foam Stability of Different AEAs
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Constitutive Relation of Sulfate Attacked Concrete Based on Uniaxial Loading
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Non-Linear Elastic Incremental Constitutive Model for Confined Concrete
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Application of Traditional Local Materials and Suitable Technology in the Modern Low-Carbon Buildings: A Case Study of Rammed Earth Building
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 168-170Suppressing Expansion Due to Alkali-Aggregate...

Suppressing Expansion Due to Alkali-Aggregate Reaction by Using Limestone Powder

Abstract:

This paper is about the suppressing of the alkali-silica reactivity of limestone aggregate by using finely ground limestone aggregate. The accelerated mortar-bar expansion test (ASTM 1260) was used to evaluate the effectiveness of limestone powder in suppressing ASR expansion. Three mixes were used, respectively, 15%, 30% and 50% limestone power replacement of the cement. The results showed that deleterious expansions due to ASR could be suppressed by using reactive limestone powder. The effects depended on what the replacement amounts and the ages were. With appropriate replacement amounts, the deleterious expansions due to ASR could be reduced by using reactive limestone powder. Author believes that any type of mineral SiO2 with being grounded to certain fineness can suppress the ASR reactivity of aggregates, and the effectiveness of reactive aggregate powder is better than that of non-reactive aggregate powder. The replacement level that can control expansion varies with the type of mineral SiO2 and fineness of the aggregate powder.

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Periodical:

Advanced Materials Research (Volumes 168-170)

Pages:

40-43

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.168-170.40

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Online since:

December 2010

Authors:

Ding Yan Wu, Kun he Fang, Yong he Liu

Keywords:

Accelerated Mortar-Bar Expansion Test (ASTM 1260), Alkali-Silica Reaction, Limestone Powder, Suppressing

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References

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