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- W4211127921 abstract "Construction industry generates huge amounts of debris that needs to be recycled and reused as recycled aggregates (RAs) for partial or total substitution of natural aggregates. Recycling reduces waste and reduces energy consumption and hence contributes to a more sustainable construction industry. In this chapter the need for recycling and the current situation worldwide are highlighted. RA properties are discussed. RAs have a relative density lower than that of virgin materials and higher water absorption. A state of the art RA concrete performance at the fresh and hardened state is summarized. RA concrete presents lower compressive and flexural strengths as well as lower modulus of elasticity and lower fracture because of the porous nature of the RA and the old adhered cement mortar on the surface of the aggregates. Bond strength and abrasion resistance are little affected. Shrinkage, water permeability and water absorption by capillary increase with increase in RA content. However, the lower performance can be mitigated by a good mix design using supplementary cementitious materials. Successful applications of RA in producing self-compacting and roller-compacted concrete are also discussed." @default.
- W4211127921 created "2022-02-13" @default.
- W4211127921 creator A5072739471 @default.
- W4211127921 date "2018-01-01" @default.
- W4211127921 modified "2023-10-18" @default.
- W4211127921 title "Recycled aggregates" @default.
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- W4211127921 doi "https://doi.org/10.1016/b978-0-08-102156-9.00003-1" @default.
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