1. Research Assistant, Building Materials and Construction Chemistry, Technische Universität Berlin, Berlin, Germany; Structural Engineering Department, Mansoura University, Elgomhouria St, Mansoura City, Egypt
2. Research Assistant, Building Materials and Construction Chemistry, Technische Universität Berlin, Berlin, Germany (corresponding author: )
3. Professor, Building Materials and Construction Chemistry, Technische Universität Berlin, Berlin, Germany