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This paper presents data related to the development of high-strength concrete with special emphasis on the development of high early strength. Both these objectives were achieved by using an ultrafine portland cement with a specific surface of about 750 m2/kg or a high early strength portland cement with about 75% tricalcium silicate content. Experimental data are then reported on strength and elasticity properties, stress-strain behavior, heat of hydration, shrinkage, and creep of these concretes. The results show that using an ultrafine cement, concrete with adequate workability and one-day strengths of 60 to 80 N/mm2 and 35 to 40 N/mm2 can be obtained with granite aggregates and lightweight aggregates, respectively. With high early strength cement and lightweight aggregates, strengths of 10 to 25 N/mm2 in 12 h, and 25 to 45 N/mm2 in 1 day were achieved.
Reader in civil and structural engineering (professor), University of Sheffield, Sheffield,
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