Heat evolution due to cement hydration in foamed concrete
- 1 December 2010
- journal article
- Published by Thomas Telford Ltd. in Magazine of Concrete Research
- Vol. 62 (12), 895-906
- https://doi.org/10.1680/macr.2010.62.12.895
Abstract
Foamed concrete is nowadays considered an attractive building material as a result of flexible production technology and excellent target properties, along with economic benefits. Heat generated in foamed concrete during cement hydration is found to differ significantly from normal-weight concrete. Foamed concrete that is placed in a regular-shaped well-insulated mould experiences significant core temperature rises and, although several documents discussing the thermal effect in foamed concrete have been published, there is still a lack of information revealing the interrelations of foamed concrete parameters and their effect on temperature rise. Laboratory tests were carried out with foamed concrete of variable densities and volumes under semi-adiabatic curing conditions. The observed trends were used as the initial input for a mathematical model of temperature prediction in foamed concrete. The heat evolution process under real production conditions can be controlled by optimising the mix composition. If the thermal energy in foamed concrete is properly employed it can result in considerable improvement of the final product characteristics while production costs decrease.Keywords
This publication has 12 references indexed in Scilit:
- Transient plane source measurements of the thermal properties of hydrating cement pastesMaterials and Structures, 2007
- Heat of hydration in foamed concrete: Effect of mix constituents and plastic densityCement and Concrete Research, 2006
- Utilising unprocessed low-lime coal fly ash in foamed concreteFuel, 2005
- A numerical model and associated calorimeter for predicting temperature profiles in mass concreteCement and Concrete Composites, 2004
- An experimental study on thermal conductivity of concreteCement and Concrete Research, 2003
- Heat evolution of high-volume fly ash concreteCement and Concrete Research, 2002
- The effect of high fly ash content on the compressive strength of foamed concreteCement and Concrete Research, 2001
- Prediction of Adiabatic Temperature Rise in Conventional and High-Performance Concretes Using a 3-D Microstructural ModelCement and Concrete Research, 1998
- General hydration model for portland cement and blast furnace slag cementCement and Concrete Research, 1995
- Temperature rise inside pastes during hydration in hot climatesCement and Concrete Research, 1994