Optimization Study and Damage Evaluation in Concrete Mixtures Exposed to Slow Freeze — Thaw Cycles
by Remzi Sahin, (corresponding author), (Asst. Prof., Engrg. Fac., Dept. of Civ. Engrg., Atatürk Univ., Erzurum 25240, Turkey E-mail: rsahin@atauni.edu.tr), Mehmet Ali Tasdemir, (Prof., Civ. Engrg. Fac., Istanbul Tech. Univ., Istanbul, Turkey), Rüstem Gül, (Prof., Engrg. Fac., Dept. of Civ. Engrg., Atatük Univ., Erzurum 25240, Turkey), and Cafer Celik, (Prof., Engrg. Fac., Dept. of Industrial Engrg., Atatürk Univ., Erzurum 25240, Turkey)
Journal of Materials in Civil Engineering, Vol. 19, No. 7, July 2007, pp. 609-615, (doi: http://dx.doi.org/10.1061/(ASCE)0899-1561(2007)19:7(609))
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| Document type: |
Journal Paper |
| Abstract: |
This paper presents an application of an optimization based on the Taguchi method for analyzing the deterioration of concrete with different compositions due to freezing and thawing. Effects of four parameters, i.e., water — cement ratio, cement content, amount of air-entrainment, and curing conditions, on the freeze — thaw resistance of concrete were investigated. The deterioration in concrete during the repeated freeze — thaw cycles were quantitatively evaluated in the light of the experimental measurements taken on length changes. It can be concluded that, within the limits of this work, the most important parameter affecting the freezing resistance of the concrete is the air-entraining admixture (AEA). Non-air-entrained concretes were severely damaged exhibiting substantial scaling after a limited number of freeze — thaw cycles. Damage increases significantly after around 1.5% residual length change (expansion) occurs in the specimens without AEA. |
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