Properties of Concrete Modified by Ultrafine Cement Admixture

This article describes possibility using hydrated cement as additions for batching new concrete. Time of cement hydration was 2, 4 and 6 hours. Quantity of pre-hydrated cement for batching admixture was equal 5, 10, 15, 30% dry matter content in relation to cement for control mixture. Influence of a...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-03, Vol.1079 (3), p.32078
Main Authors: Egorov, E S, Samchenko, A V, Abramov, M A
Format: Article
Language:English
Subjects:
Admixtures
Cement hydration
Concrete
Consistency
Ultrafines
Weight
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Summary:This article describes possibility using hydrated cement as additions for batching new concrete. Time of cement hydration was 2, 4 and 6 hours. Quantity of pre-hydrated cement for batching admixture was equal 5, 10, 15, 30% dry matter content in relation to cement for control mixture. Influence of addition on normal consistency, concrete unit weight and compression resistance was determined. Cement particles distributions of control and pre-hydrated specimens was studied. The article shown need for increasing water quantity to getting normal consistency which led to decreasing unit weight. As a result of adding hydrated cement particles an early strength increased with amount of admixture less than 10%. Received results were discussed according to cement hydrations mechanism.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1079/3/032078