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Volume 34 Number 4 Volume 35 Number 1 Volume 35 Number 2

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Research articles

ScienceAsia 35 (2009): 57-63 |doi: 10.2306/scienceasia1513-1874.2009.35.057

A model for predicting the coefficient of thermal expansion of cementitious paste

Pongsak Choktaweekarna, Somnuk Tangtermsirikulb

ABSTRACT:     The coefficient of thermal expansion (CTE) of cementitious paste at various ages was studied. Pastes were prepared with various water to binder and fly ash to binder ratios. The CTE of paste increased with age, and decreased with fly ash content, particularly at an early age. A model for predicting the CTE of paste was proposed as a time, material, and mix proportion dependent function. The model was verified with various experimental results and the verification results were satisfactory.

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a School of Civil Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani 12120, Thailand
b Construction and Maintenance Technology Research Centre (CONTEC), Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani 12120, Thailand

* Corresponding author, E-mail: pongsak@siit.tu.ac.th

Received 7 Oct 2008, Accepted 20 Feb 2009