Download PDF by Marco Pepe: A Conceptual Model for Designing Recycled Aggregate Concrete

By Marco Pepe

ISBN-10: 3319264729

ISBN-13: 9783319264721

ISBN-10: 3319264737

ISBN-13: 9783319264738

This ebook stories at the actual and mechanical characterization of Recycled mixture Concrete (RAC), produced via a partial-to-total substitute of standard aggregates with what were dubbed Recycled Concrete Aggregates (RCAs). It proposes a theoretical framework for realizing the relationships among RCAs and RCA, and for predicting the ensuing habit of RAC. The booklet demonstrates that during the case of RAC extra parameters must be taken under consideration than with traditional aggregates, as a result of composite nature and better porosity of RCAs. by way of extending Abrams’ legislation for Recycled combination Concrete, it represents a primary step within the formula of a normal version for predicting the houses of RAC. The theoretical strategy awarded right here addresses a big hole within the literature and is predicted to stimulate new examine at the use of this extra sustainable type of concrete in structural applications.

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Extra resources for A Conceptual Model for Designing Recycled Aggregate Concrete for Structural Applications

Example text

In that respect, flow charts of typical plant for closed system production of recycled aggregate from concrete debris are presented (Fig. 1). Furthermore, the document refers to studies by Hansen (1986) about properties of recycled concrete aggregate both coarse and fine. Hansen (1986) concluded that the fine recycled aggregates are generally coarser (Fig. 2) and more angular than those needed to produce good quality concrete. Moreover, the results of his studies indicated that this coarseness and increased angularity were the reasons why concrete made with these materials tended to be somewhat harsh and unworkable.

Represented by the black spots. The amount of AM, NA and closed porosity distributed inside the RCAs was determined by using the volume reconstruction 36 4 Recycled Concrete Aggregates Fig. 15 2161 2374 2242 2403 2400 2585 2202 2659 2457 RCA2 RCA4 technique (ASTM E1570-11 2011). Then, these results were combined with the other tests performed on RCAs so that several correlations could be made, which are proposed in the next section for exploring the relations between the main engineering properties of recycled aggregates.

2) and more angular than those needed to produce good quality concrete. Moreover, the results of his studies indicated that this coarseness and increased angularity were the reasons why concrete made with these materials tended to be somewhat harsh and unworkable. Fig. 1 Processing procedure for building and demolition waste (ACI 555R-01 2001) 22 3 Regulatory Environment and Guidelines for RACs Fig. 2 Range of gradings of crusher fines obtained when 33 mm maximum size coarse, recycled aggregates are produced by jaw crusher in one pass.

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A Conceptual Model for Designing Recycled Aggregate Concrete for Structural Applications by Marco Pepe


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