Effect of cement particle size distribution on properties of cement mixed with polycarboxylate superplasticizer

The particle size distribution of cement under different milling time was studied, and the effects of different particle size distributions on the polycarboxylate superplasticizer dosage of the paste and the bleeding property of the paste were researched, and the early hydration exothermic rule of c...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-03, Vol.780 (4), p.42013
Main Authors: Lai, Guangxing, Fang, Yunhui, Chen, Zhanghua, Shao, Youzhe, Guo, Yuanqiang
Format: Article
Language:English
Subjects:
Ball milling
Bleeding
Cement
Cement paste
Dosage
Exothermic reactions
Hydration
Particle size
Particle size distribution
Superplasticizers
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Summary:The particle size distribution of cement under different milling time was studied, and the effects of different particle size distributions on the polycarboxylate superplasticizer dosage of the paste and the bleeding property of the paste were researched, and the early hydration exothermic rule of cement was investigated with the hydration heat meter. The results show that with the increase of ball milling time, the particle size distribution of cement is close to the direction of small particle size. With the same paste fluidity, the dosage of polycarboxylate superplasticizer increased and the bleeding rate of cement paste decreased with the increase of cement fine particle components. Under the same condition, with the increase of cement fine particle content, the hydration reaction speed is accelerated and the degree of hydration is relatively high.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/780/4/042013