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CAMARINI, Gladis; CINCOTTO, Maria Alba. Different steam curing conditions effects on compressive strength of slag cement. In: INTERNATIONAL CONGRESS ON HIGH-PERFORMANCE AND QUALITY OF CONCRETE STRUCTURES, 1996, Florianópolis. Anais... Florianópolis, 1996. p. 542-553.
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Número de Trabalhos: 54 (Com arquivo PDF disponíveis: 29)
Citações: 3
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Co-autores: 1

Dados do autor na base InfoHab:
Número de Trabalhos: 15 (Com arquivo PDF disponíveis: 5)
Citações: 4
Índice h: 1  
Co-autores: 2

Abstract

Steam curing is an appropriate technique for precast mortar and concrete products in order to accelerate early strength development. This procedure presents curing cycles with various periods. As slag hydration is slower than that of clinker it could be advantageous to employ thermal activation in precast industry with slag cements. The aim of this experimental work is to observe mortar compressive strength made with OPC and slag cements with slag content of 35% (AF-1), 50% (AF-2) and 70% (AF-3), according to Brazilian Methods. The specimens were steam cured at 60ºC, 80ºC and 95ºC in five different curing periods, resulting 60 curing cycles. The results show that it is difficult to set up a standard performance to steam cured cement mortars as each one has its own characteristic performance. Blastfurnace slag cement mortar with high slag content, AF-2 and AF-3, showed the best results. These cements showed strength increase at the range of 5% to 42% related to OPC, immediately after the steam curing. The age for the maximum compressive strength is 28 days, and in some cases it diminishes at advanced ages.
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