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Effects of silica fume and blast furnace slag on the ..., 2019-7-30 · The concrete samples were cured in molds at 20 ± 2 °C and 60 ± 5% relative humidity and demolded after 24 h. Then, the concrete samples were cured in the standard curing chamber (at 20 ± 2 °C and 95% relative humidity) till test age. 2.4. Methods 2.4.1. Compressive and splitting tensile strength.

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