Properties of cement-based materials containing fly ash

Li, Liang, Zhou, Wei, Dao, Vinh, Ozgakkaloglu, Togay and Liu, Xinghong (2015). Properties of cement-based materials containing fly ash. In: Dilum Fernando, Jin-Guang Teng and Jose L. Torero, Proceedings of the Second International Conference on Performance–based and Life-cycle Structural Engineering (PLSE 2015). International Conference on Performance-based and Life-cycle Structural Engineering, Brisbane, Australia, (1543-1554). 9-11 December, 2015. doi:10.14264/uql.2016.402

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Author Li, Liang
Zhou, Wei
Dao, Vinh
Ozgakkaloglu, Togay
Liu, Xinghong
Title of paper Properties of cement-based materials containing fly ash
Conference name International Conference on Performance-based and Life-cycle Structural Engineering
Conference location Brisbane, Australia
Conference dates 9-11 December, 2015
Proceedings title Proceedings of the Second International Conference on Performance–based and Life-cycle Structural Engineering (PLSE 2015)
Place of Publication Brisbane, Australia
Publisher The University of Queensland, School of Civil Engineering
Publication Year 2015
Sub-type Fully published paper
DOI 10.14264/uql.2016.402
Open Access Status Not Open Access
ISBN 9781742721477
Editor Dilum Fernando
Jin-Guang Teng
Jose L. Torero
Start page 1543
End page 1554
Total pages 12
Collection year 2016
Language eng
Abstract/Summary Fly ash has been increasingly used in concrete structures due to both environmental and technical benefits. Despite significant past research, our understanding of thermal and physical properties of fly ash mortar and concrete remains incomplete and thus needs further investigation. This paper presents results of a study into important fundamental thermal and physical properties of both fly ash mortar and fly ash concrete. Replacement levels of Portland cement by fly ash investigated were30%, 50% and 60% by mass. In cement-fly ash mortar tests, increasing fly ash content was found to delay setting times, decrease both compressive and flexural strengths and reduce hydration heat. The effect of fly ash on hydration heat evolution of cement binder was quantitatively analysed. The obtained reduction coefficient (k) would allow reasonable prediction of temperature rise in concrete structures, which is of particular interest for mass concrete construction. In cement-fly ash concrete tests, thermal properties, including thermal diffusivity, conductivity and specific heat, were also measured and reported. There also appeared a linear relationship between compressive and flexural strengths of concrete incorporating up to 60% fly ash by mass. In addition, the observed effect of fly ash on ultimate tensile strain, static elasticity modulus and drying shrinkage of concrete was also reported.
Keyword Fly ash
Portland cement
Mortar
Concrete
Thermal and physical properties
Reduction coefficient
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes http://plse2015.org/cms/wp-content/uploads/Proceedings_PLSE_2015.pdf

 
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Created: Tue, 05 Jan 2016, 15:53:35 EST by Jeannette Watson on behalf of School of Civil Engineering