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- W2073622013 abstract "Good knowledge of fracture parameters and cracking behavior of self-compacting concrete (SCC) from early ages until the SCC becomes mature plays an important role in design of SCC structure and also in evaluation of durability and consequently prevention of damage. In this paper, variation of fracture parameters and corresponding ductility behavior of SCC at different ages (e.g. 3 days, 7 days, 28 days and 90 days) for SCC mixes with w/c ratios of 0.45 and 0.65 have been experimentally studied. To do so, three-point bending tests were carried out on 120 notched beams. Then, size effect method (SEM) and work of fracture method (WFM) were applied to interpret the results. The results of analyses indicated that as the concrete is aging from 3 days to 90 days: (a) fracture energies from SEM (Gf) and WFM (GF) are increased: (b) effective size of the process zone (Cf) in SEM and characteristic length (Lch) in WFM are considerably decreased indicating increase of concrete brittleness: (c) fracture surface of concrete passing through the aggregate is increased which is attributed to strength improvement of hardened cement paste and aggregate–paste transition zone: (d) fracture toughness is significantly increased: (e) brittleness number is almost doubled. Also, the ratio of GF/Gf, which is applied for calibration of numerical models of cracking at different ages, is equal to 2.70." @default.
- W2073622013 created "2016-06-24" @default.
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- W2073622013 date "2014-03-01" @default.
- W2073622013 modified "2023-10-03" @default.
- W2073622013 title "The effect of aging on the fracture characteristics and ductility of self-compacting concrete" @default.
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- W2073622013 doi "https://doi.org/10.1016/j.matdes.2013.10.066" @default.
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