PFA concrete: Exposure temperature effects on chloride diffusion

R. K. Dhir; M. R. Jones; A. E. Elghaly

doi:10.1016/0008-8846(93)90170-E

PFA concrete: Exposure temperature effects on chloride diffusion

R. K. Dhir, M. R. Jones, A. E. Elghaly

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

The results are discussed of a study into the effect of exposure temperature on the coefficient of chloride diffusion (D) of concrete, with PFA contents varying from 0 to 50%, strength from 20 to 60 N/mm² and initial curing being in either water 20°C or in air 20°C/55% RH. The effect of PFA in reducing D is shown to increase with exposure temperature. This effect is greater than the effect of design strength and is more marked where the initial curing has been poor. The work shows that the diffusion test conditions must be chosen to reflect the exposure environment of the concrete structure, as it is possible to greatly over or underestimate the durability of concrete using the standard temperature of 20°C.

Original language	English
Pages (from-to)	1105-1114
Number of pages	10
Journal	Cement and Concrete Research
Volume	23
Issue number	5
DOIs	https://doi.org/10.1016/0008-8846(93)90170-E
Publication status	Published - Sept 1993

ASJC Scopus subject areas

Building and Construction
General Materials Science

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10.1016/0008-8846(93)90170-E

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title = "PFA concrete: Exposure temperature effects on chloride diffusion",

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AU - Jones, M. R.

AU - Elghaly, A. E.

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N2 - The results are discussed of a study into the effect of exposure temperature on the coefficient of chloride diffusion (D) of concrete, with PFA contents varying from 0 to 50%, strength from 20 to 60 N/mm2 and initial curing being in either water 20°C or in air 20°C/55% RH. The effect of PFA in reducing D is shown to increase with exposure temperature. This effect is greater than the effect of design strength and is more marked where the initial curing has been poor. The work shows that the diffusion test conditions must be chosen to reflect the exposure environment of the concrete structure, as it is possible to greatly over or underestimate the durability of concrete using the standard temperature of 20°C.

AB - The results are discussed of a study into the effect of exposure temperature on the coefficient of chloride diffusion (D) of concrete, with PFA contents varying from 0 to 50%, strength from 20 to 60 N/mm2 and initial curing being in either water 20°C or in air 20°C/55% RH. The effect of PFA in reducing D is shown to increase with exposure temperature. This effect is greater than the effect of design strength and is more marked where the initial curing has been poor. The work shows that the diffusion test conditions must be chosen to reflect the exposure environment of the concrete structure, as it is possible to greatly over or underestimate the durability of concrete using the standard temperature of 20°C.

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JF - Cement and Concrete Research

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ER -

PFA concrete: Exposure temperature effects on chloride diffusion

Abstract

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