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The main research topics silica fume concrete in the marine environment under the mechanical properties. The silica fume concrete were placed on standard conditions and conservation of water conservation under the conditions of conservation, measured 3 d, 28, 90d, 90th and the intensity 1a. Comparative study of silica fume concrete long-term strength of the trend. By changing the amount of additives, water-cement ratio and the consumption of water, affecting silica fume concrete strength factor. Two were right under the conditions of conservation of silica fume concrete for a freeze-thaw test, measurement concrete freeze-thaw after water absorption, peeling rate, relatively immobile loss, relative strength and other test data Analysis found that silica fume concrete resist water erosion and frost resistance ideal. Test results show : the incorporation of silica fume concrete water conservation conditions intensity than standard curing conservation intensity. Sea custody silica fume