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Temperature and moisture effects on mechanical properties of concrete: evaluation of prediction relations for sulphate resistant concrete

Temperature and moisture effects on mechanical properties of concrete: evaluation of prediction... This study investigates the influence of different curing temperatures and humidity conditions on the development of mechanical properties of sulphate resistant concrete (SRC) and its prediction relations. A series of experiments were performed considering three distinct curing temperatures (20°C, 40°C, and 60°C). For each curing temperature, 60-specimen were cast and exposed to four different moisture conditions (moist, 55% humidity, threeday moist then 55% humidity, seven-day moist then 55% humidity). The experimental results revealed that higher curing temperatures along with continuous lower and higher degrees of saturation yield high early-age and lower 28-day compressive strength, splitting tensile strength, and elastic modulus of SRC and vice versa for lower curing temperatures. Finally, applicability of existing relationships to estimate elastic modulus and splitting tensile strength from compressive strength of concrete were investigated. Prediction models which best fits the current experimental results were identified and proposed for their future uses in SRC. Keywords: curing temperature; relative humidity; compressive strength; splitting tensile strength; elastic modulus; prediction model. Reference to this paper should be made as follows: Amin, M.N. (2016) `: evaluation of prediction relations for sulphate resistant concrete', Int. J. Structural Engineering, Vol. 7, No. 4, pp.333­354. Biographical notes: Muhammad Nasir Amin is http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Structural Engineering Inderscience Publishers

Temperature and moisture effects on mechanical properties of concrete: evaluation of prediction relations for sulphate resistant concrete

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Publisher
Inderscience Publishers
Copyright
Copyright © 2016 Inderscience Enterprises Ltd.
ISSN
1758-7328
eISSN
1758-7336
DOI
10.1504/IJSTRUCTE.2016.079283
Publisher site
See Article on Publisher Site

Abstract

This study investigates the influence of different curing temperatures and humidity conditions on the development of mechanical properties of sulphate resistant concrete (SRC) and its prediction relations. A series of experiments were performed considering three distinct curing temperatures (20°C, 40°C, and 60°C). For each curing temperature, 60-specimen were cast and exposed to four different moisture conditions (moist, 55% humidity, threeday moist then 55% humidity, seven-day moist then 55% humidity). The experimental results revealed that higher curing temperatures along with continuous lower and higher degrees of saturation yield high early-age and lower 28-day compressive strength, splitting tensile strength, and elastic modulus of SRC and vice versa for lower curing temperatures. Finally, applicability of existing relationships to estimate elastic modulus and splitting tensile strength from compressive strength of concrete were investigated. Prediction models which best fits the current experimental results were identified and proposed for their future uses in SRC. Keywords: curing temperature; relative humidity; compressive strength; splitting tensile strength; elastic modulus; prediction model. Reference to this paper should be made as follows: Amin, M.N. (2016) `: evaluation of prediction relations for sulphate resistant concrete', Int. J. Structural Engineering, Vol. 7, No. 4, pp.333­354. Biographical notes: Muhammad Nasir Amin is

Journal

International Journal of Structural EngineeringInderscience Publishers

Published: Jan 1, 2016

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