Effect of Combination of Admixture on the Development of Selected Properties of Concrete and their Comparison

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Abstract:

The paper is involved with effects of admixtures (fly ash, slag) and their combination on selected properties of ordinary concrete. The set of concrete covers seven different containing of Portland cement and approximately 10% of admixed slag and concrete with fly ash and slag contents up to 42 %. At early age of the concrete balanced values of compressive strength were obtained except the concrete with admixture combinations. And on the contrary at 28-day age the concrete with admixture combinations obtained comparable values like concrete with only one type of admixture. The compressive strength was monitored together with modulus of elasticity to 180-day age of the concrete. In the last phase the obtained values were compared with guide value where the slower development of theses parameters with applied admixtures was pointed out.

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206-210

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August 2016

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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