Study on the Durability of Concrete under an Underwater Coupling Environment

Table 4

Concrete mix proportion and specific gravity of admixture.

Number	Water-cement ratio	Amount of rubber material (kg·m^−3)	Cement (kg·m^−3)	Sand (kg·m^−3)	Crushed stone (kg·m^−3)	Fly ash (%)	Mineral powder (%)	General preservatives (%)	Efficient preservative (%)	Common rust inhibitor (%)	High-efficiency rust inhibitor (%)
E1	0.34	450	225	767	1016	20	30	0	0	0	0
E2	0.36	450	225	764	1010	20	30	0	0	0	0
E3	0.34	450	225	767	1016	16	24	10	0	2	0
E4	0.34	450	225	767	1016	16	24	0	10	2	2
E5	0.32	480	192	755	1001	20	40	0	0	0	0
E6	0.32	480	192	755	1001	15	35	10	0	2	0
E7	0.32	480	192	755	1001	15	35	0	10	0	2