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HomeKey Engineering MaterialsKey Engineering Materials Vol. 919Effect of Locally Sourced Fly Ash and GGBS on the...

Effect of Locally Sourced Fly Ash and GGBS on the Compressive Strength and Chloride Resistance of Concrete

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Abstract:

The paper investigated the effect of locally sourced fly ash and ground granulated blast-furnace slag (GGBS) on the compressive strength and chloride resistance of concrete. The mix proportion was cementitious material (total of ordinary Portland cement (OPC), fly ash and GGBS): sand: coarse aggregate: water of 1:2:3:0.6 in which 20% by mass of total cementitious materials was replaced by class F fly ash and GGBS. Compressive strength and rapid chloride penetration tests were conducted at 28, 56 and 120 days. The results shows that fly ash and GGBS reduce slightly the compressive strength but improve significantly the choloride resistance of concrete. Within the range of investigation, 10% of fly ash and 10% of GGBS are recommended to replace OPC as they improve the chloride resistance and maintain the compressive strength of concrete.

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Periodical:

Key Engineering Materials (Volume 919)

Pages:

123-131

DOI:

https://doi.org/10.4028/p-m72xj5

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Online since:

May 2022

Authors:

Chinh Van Nguyen*

Keywords:

Chloride Resistance, Compressive Strength, Concrete, Fly Ash, GGBS

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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