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- W4387399695 abstract "Air void structure has always been a key factor affecting the frost resistance of concrete. The refinement of air void structure mainly comes from the extrusion of slurry and the cutting of aggregates. However, there is no systematic theory on the influence of aggregate on air void structure. In this paper, the effects of different coarse aggregate grades on the concrete air void structure were studied. The fractal dimension D value was used to represent the coarse aggregate gradation. In the range of coarse aggregate particle size between 4.75-26.5 mm, D=2.1, D=2.3, D=2.5, D=2.7 were selected as the experimental group, and single-graded coarse aggregate of 4.75 and 26.5 mm were selected as the control group, with a total of six test groups. By means of an air content tester, Rapid Air, freeze-thaw durability test and other measurements, the air content, air void structure, freeze-thaw durability and other performance parameters were measured. The differences in air void structure parameters of specimens, such as air content, spacing factor and the number of bubbles were compared to obtain the relationship between the coarse aggregate grading and air void structure. Further analysis of its influence on frost resistance can provide a reference for scientific research and engineering application of concrete air void structure." @default.
- W4387399695 created "2023-10-07" @default.
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- W4387399695 date "2023-01-01" @default.
- W4387399695 modified "2023-10-07" @default.
- W4387399695 title "Influence of Coarse Aggregate Grade on Air Void Structure of Air-entrained Concrete" @default.
- W4387399695 doi "https://doi.org/10.23967/c.dbmc.2023.029" @default.
- W4387399695 hasPublicationYear "2023" @default.
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