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Properties of self-compacting concrete mixtures containing metakaolin and blast furnace slag

✍ Scribed by Eva Vejmelková; Martin Keppert; Stefania Grzeszczyk; Bartłomiej Skaliński; Robert Černý

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
416 KB
Volume
25
Category
Article
ISSN
0950-0618

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✦ Synopsis

Rheological, mechanical and durability properties of self-compacting concrete (SCC) mixes produced using blended binders containing metakaolin and blast furnace slag are studied. The rheological properties of SCC mix with metakaolin are characterized by significant yield stress and relatively low viscosity, while the mix with blast furnace slag shows zero yield stress and higher viscosity. The compressive strength of SCC with metakaolin grows very fast during the initial hardening period and remains significantly higher, as compared with the mix with blast furnace slag, up to 90 days. Durability properties of the mix containing metakaolin are excellent. Water absorption coefficient and water penetration depths are very low. The freeze resistance tests show zero mass loss after 56 cycles in deicing salt solution.

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