Table 3: Mixture proportions of concrete.

IDW/C (%)Water (kg/ m 3 )Cement (kg/ m 3 )S (kg/ m 3 )G (kg/ m 3 )WRA (kg/ m 3 )Air (%)

O575716529081210302.94.5
O57 m # 1 5726546613044.7#2
O39391694347909334.33.8
O39 m # 1 3925765912006.5#2
O25251706806948186.83.6
O25 m # 1 252439719919.7#2

#1Mortar is made from wet screening of concrete (maximum mesh size: 5 mm).
#2Air content of mortar was not measured because it is difficult to obtain wet-screened mortar volume required for the test.