Table 2 Properties of aggregates and chemical admixture.

Fine aggregate

Sea sand (S1)

Density 2570 kg/m³, absorption 1.66%, F.M. 2.97

Chloride ion concentration 0.002%

Crushed sand (S2)

Density 2680 kg/m³, absorption 2.52%, F.M. 2.71

Coarse aggregate

Crushed stone (G), maximum size 20 mm, density 2700 kg/m³, absorption 0.65%, F.M. 6.77

Chemical admixture

High-range water-reducing agent (HRWRA)

(Lignin sulfonate, oxy-carboxylate and poly-carboxylic acid-based compound)

Air entraining agent (AEA)

(Alkyl ether-based)

(JIS A 6204), (ASTM C 494)