1. Research Assistant, Dept. of Civil Engineering, Construction Materials Division, Yildiz Technical Univ., Davutpasa Campus, Esenler-Istanbul 34210, Turkey (corresponding author).
2. Professor, Dept. of Civil Engineering, Construction Materials Division, Yildiz Technical Univ., Davutpasa Campus, Esenler-Istanbul 34210, Turkey.
3. Asssociate Professor, Dept. of Civil Engineering, Construction Materials Division, Yildiz Technical Univ., Davutpasa Campus, Esenler-Istanbul 34210, Turkey.