—The objective of this research is to study the effects of thermal stimulation of PC ether high performance water-reducing agent on the workability of fresh cement-mortar. For better understanding of the behavior of these admixtures under thermal stimulation condition, two types of water-reducing agents are used, superplasticizer and high range water reducer (Air Entraining type). The chosen admixtures were heated by different temperatures, 40, 50 and 60℃ for two various times, 30 minutes and 24 hours. These conditions experimentally investigated different types of cements, high early strength cement and ordinary Portland cement. As a result, influence of thermal stimulation of admixtures on the workability of fresh cement-mortar is observed. Accordingly, in a specific water cement ratio in cement concrete, the amount of the admixture can be significantly reduced by using thermal simulation technique in comparison to non-thermal stimulated ones. Therefore, it is possible to reduce the economic aspect of production with this technique.
—Thermal stimulation, superplasticizer, workability, high-performance AE water reducing agent, high range water reducer, fresh properties, mortar paste.
The authors are with the Course of Civil Engineering, School of Engineering, Tokai University, Japan (e-mail: Saleh_salehi7@yahoo.com).
Cite: M. S. Salehi, Z. Tahery, S. Sasaki, and S. Date, "Effect of Thermal Stimulation of Admixture to Workability of the Mortar," International Journal of Engineering and Technology vol. 9, no. 3, pp. 183-186, 2017.