Abstract: To investigate the possibility of improving cracking-resistance of RCC by using coarse cement,it is necessary to study relationship between specific surface area(SSA) of cement and mechanical properties of RCC.Physical properties of cements with five different SSAs(258~413 m2/kg) are tested,such as mortar strength.Mechanical properties and ultimate tensile strain capacity of five kinds of RCC mixed in cements with different SSA are compared.Results show that at 28 d,the compressive strength of mortar made w...