consistency limits of recycled aggregate

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Table 1: Source of recycled concrete aggregates used in the study. Original concrete type Aggregate characteristics Original concrete strength Laboratory cast concrete Known original concrete grade and constituent materials, regular consistency, low contamination 10 – 70 N/mm& 178;

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Recycled Aggregate - an overview ScienceDirect Topics

Those limits on the replacement ratio reflect the effects of recycled aggregate on concrete that have been experimentally observed in past research studies. Indeed, the main technical problems evidenced when recycled aggregates are used depend on the quality of the aggregates e.g., for MA, or when the attached mortar content is high , on the

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Recycled Concrete Aggregate - an overview ScienceDirect

Recycled concrete aggregate RCA is the designation used in BS 8500-2 for recycled aggregate principally comprising crushed concrete. Designations of recycled aggregate other than RCA are of lower quality and may contain significant quantities of masonry which would preclude or limit their use in structural concrete.

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A review of recycled aggregate in concrete appli ions

May 30, 2018& 0183;& 32;Using recycled aggregate at the replacement levels of up to 100%, concrete paving blocks with 28 day compressive strength of not <49 MPa can be produced. The performance of the blocks and bricks was also found satisfactory for shrinkage and skid resistance tests. 7.4. Oyster bedsCited by: 228

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Fresh properties of recycled aggregate concrete

Feb 10, 2020& 0183;& 32;Fresh properties of normal consistency concrete with coarse recycled aggregate CRA Behaviour of concrete with different CRA crushing levels, w/c, and paste volume. Testing concrete for slump, flow table, inverted cone, Vebe, bulk density, and air content. Assessment of concrete’s workability loss overtime. Cited by: 6

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