期刊
CEMENT & CONCRETE COMPOSITES
卷 25, 期 3, 页码 293-299出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0958-9465(02)00058-6
关键词
ground granulated blast-furnace slag; fly ash high-strength concrete; sulfate attack; strength; scanning electron microscope
This paper presents a laboratory study on the influence of combination of fly ash (FA) and ground granulated blast-furnace slag (GGBS) on the properties of high-strength concrete. A contrast study was carried out for the concrete (GGFAC) incorporating FA and GGBS, control Portland cement concrete and high-volume FA high-strength concrete (HFAC). Assessments of the concrete mixes were based on short- and long-term performance of concrete. These included compressive strength and resistance to H2SO4 attack. The microstructure of the concretes at the age of 7 days and 360 days was also studied by using scanning electron microscope. The results show that the combination of FA and GGBS can improve both short- and long-term properties of concrete, while HFAC requires a relatively longer time to get its beneficial effect. (C) 2002 Elsevier Science Ltd. All rights reserved.
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