Thermo-mechanical performance of concrete with alternative binder material.

Kirton, Paula, Richardson, Alan and Agnew, Brian (2013) Thermo-mechanical performance of concrete with alternative binder material. Structural Survey, 31 (5). pp. 368-386. ISSN 0263-080X

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Official URL: http://dx.doi.org/10.1108/SS-01-2013-0002

Abstract

Abstract
Purpose – This paper investigates the effect of changes to fundamental components of concrete; cement type, water/cement ratio, aggregate size & age, on thermo-mechanical properties of hardened concrete. Understanding the heat transfer properties of construction materials will enable a reduction in energy expenditure and associated C02 emissions, contributing to a more sustainable built environment.
Design/methodology/approach – Hardened concrete specimens were subject to steady state heat transfer test methods to determine thermal conductivity and specific heat values. Pore volume of specimens was determined using water displacement method and the compressive strength of specimens was tested according to procedures identified BS EN 12390 – 3 (2009).
Findings – Cement type CEM I produced the lowest thermal conductivity values by a maximum of 30%, with the cement type group CEM I corresponding to higher pore volumes and lower densities than cement type group CEM II. Specific heat was found to be higher in cement types containing CEM II, with cement type being the dominant factor determining specific heat. W/c ratio 0.55 provided the lowest thermal conductivity values of the w/c ratio specimens, however w/c ratio was found to have no impact on the specific heat capacity of concrete. Cement type has been found to be the most dominant component of concrete on the properties tested.
Originality/value – This paper presents knowledge of the thermal performance of concrete with easily achieved changes to concrete mix design, which can be used alone or combined for maximum effect, and their impact on compressive strength. The use of steady state heat transfer experimentation allows important thermal properties thermal conductivity and specific heat to be calculated.

Item Type: Article
Additional Information: This article is (c) Emerald Group Publishing and permission has been granted for this version to appear here (http://nrl.northumbria.ac.uk/). Emerald does not grant permission for this article to be further copied/distributed or hosted elsewhere without the express permission from Emerald Group Publishing Limited.
Uncontrolled Keywords: Heat transfer, Sustainable construction, Thermal conductivity, Specific heat, Steady state heat transfer, Pore Volume, C02 emissions
Subjects: F200 Materials Science
H200 Civil Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Alan Richardson
Date Deposited: 13 Nov 2013 13:34
Last Modified: 16 May 2017 14:43
URI: http://nrl.northumbria.ac.uk/id/eprint/14578

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