Influences of Fly Ash Level on Cementitious System Performance of Concrete Based on the Quantization Parameter Analysis

Liang Shi; Ye Wu; Jian Zhong Liu

doi:10.4028/www.scientific.net/AMM.405-408.2591

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 405-408Influences of Fly Ash Level on Cementitious System...

Influences of Fly Ash Level on Cementitious System Performance of Concrete Based on the Quantization Parameter Analysis

Abstract:

In order to achieve a scientific selection of fly ash used in concrete, the influences of fly ash level on cementitious system rheological parameters, hydration degree and capillary adsorption properties were quantitative analyzed. The results show that Class I fly ash reduces the yield stress and plastic viscosity of cementitious system. The yield stress of system increases dramatically and the plastic viscosity of system reduces when Class III fly ash added. Rheological parameters of cementitious system change little when Class II fly ash added. The higher level fly ash uses the more CSH gel generates and the less Ca(OH)₂ crystals generates in cementitious system at early age (3d to 7d). High level fly ash increases the cement paste initial capillary adsorption amount but reduces the capillary absorption rate.

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Periodical:

Applied Mechanics and Materials (Volumes 405-408)

Pages:

2591-2595

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.405-408.2591

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Online since:

September 2013

Authors:

Liang Shi, Ye Wu, Jian Zhong Liu

Keywords:

Capillary Adsorption, Cementitious System, Fly Ash Level, Hydration Degree, Rheological Parameters

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