Study on Crack Resistance of C35 Limestone Powder Concrete

Abstract C35 pier concrete was prepared with natural limestone powder and fly ash, and the effect of the proportion of limestone powder and fly ash on hydration heat of composite cementitious material system was studied At the same time, the effects of different proportions of natural limestone powd...

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Published inJournal of physics. Conference series Vol. 2468; no. 1; pp. 12025 - 12033
Main Authors Wang, Yige, He, Tao, Rong, Guocheng, Song, Putao, Xia, Jingliang, Leng, Faguang
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2023
Subjects
Crack propagation
Drying
Fly ash
Hydration
Limestone
Physics
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Summary:Abstract C35 pier concrete was prepared with natural limestone powder and fly ash, and the effect of the proportion of limestone powder and fly ash on hydration heat of composite cementitious material system was studied At the same time, the effects of different proportions of natural limestone powder and fly ash on adiabatic temperature rise, early shrinkage, drying shrinkage and early cracking of concrete were studied. The results show that the hydration heat of composite cementitious material system can be reduced by adding natural limestone powder and fly ash, the early shrinkage and dry shrinkage of concrete can be reduced, and the cracking of concrete can be reduced. On the contrary, when natural limestone powder and fly ash replace cement by 20%, 10% mass ratio, C35 concrete has the best indexes and better crack resistance.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2468/1/012025