Table 2: Mix proportion and mechanical properties of concrete. 
(a) Mix proportion 
 Water/cement ratio (%)  Unit weight (kg/cm^{3})    Cement  Water  Fine aggregate  Coarse aggregate  Admixture 
Sand/aggregate ratio (%) 
 54.7  335  183  825  930  1.68  47.5 


(b) Mechanical properties 
 Curing condition  Compressive strength (MPa)  Tensile strength (MPa)  Elastic modulus (MPa) 
 Atmospheric curing  20.0  1.7  20901.2  Water curing  21.1  1.7  21604.6 

