1. Post-Doctoral Research Associate, Centre for Cement and Concrete, Dept. of Civil and Structural Engineering, Univ. of Sheffield, Sheffield S1 3JD, U.K. (corresponding author). E-mail: k.neocleous@sheffield.ac.uk
2. Senior Engineer, Buro Happold, 49 Newhall St., Birmingham B3 3QR, U.K. E-mail: tlemat@yahoo.com
3. Professor of Construction Innovation, Centre for Cement and Concrete, Dept. of Civil and Structural Engineering, Univ. of Sheffield, Mappin St., Sheffield S1 3JD, U.K. E-mail: k.pilakoutas@sheffield.ac.uk