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What are the differences in the behavior and properties of recycled-aggregate concrete when compared to normal-aggregate concrete?

Higher porosity of recycled aggregate compared to natural aggregate leads to a higher absorption. Moreover, recycled aggregate has lower specific gravity than natural aggregate and will make concrete with higher drying shrinkage and creep.

Such differences become more significant when there is an increasing amount of recycled fine aggregates. Recycled aggregates also contain more chloride than normal aggregates which may affect the durability of concrete. Moreover, excessive recycled fine aggregates can also generate a harsh concrete mix with low workability.

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This question is taken from book named – A Closer Look at Prevailing Civil Engineering Practice – What, Why and How by Vincent T. H. CHU.

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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

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One comment on "What are the differences in the behavior and properties of recycled-aggregate concrete when compared to normal-aggregate concrete?"

FRED-DO AKPO AGBI says:

Please i need a past project to guide me in writing my project topic: production of concrete compering two companies that produce thesame type of concrete

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