Marco Pepe's A Conceptual Model for Designing Recycled Aggregate Concrete PDF

By Marco Pepe

ISBN-10: 3319264729

ISBN-13: 9783319264721

ISBN-10: 3319264737

ISBN-13: 9783319264738

This e-book experiences at the actual and mechanical characterization of Recycled combination Concrete (RAC), produced via a partial-to-total alternative of standard aggregates with what were dubbed Recycled Concrete Aggregates (RCAs). It proposes a theoretical framework for knowing the relationships among RCAs and RCA, and for predicting the ensuing habit of RAC. The publication demonstrates that during the case of RAC extra parameters must be taken into consideration than with traditional aggregates, as a result of composite nature and better porosity of RCAs. by way of extending Abrams’ legislations for Recycled mixture Concrete, it represents a primary step within the formula of a normal version for predicting the homes of RAC. The theoretical strategy awarded right here addresses a big hole within the literature and is predicted to stimulate new learn 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

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Thus, the concrete particles are homogenously distributed (in terms of geometric and physical characteristics) over the length of the sheet and can be subdivided in several sections throughout the length, called “cells” (Luz and Almeida 2012). Size Reduction This process is the key stage for turning demolition waste into concrete aggregates. 75 mm). , hammer mill) or vertical impactors (Alexander and Mindess 2010). Sieving The sieving process is intended at subdividing the produced aggregates into size classes and removing the remaining powders, both produced at the particle size reduction stage (EN 12620:2013).

In addition, when other phases can be defined (as in the case of RACs), the problem becomes more complicated. In this section, a new test methodology is proposed for the estimation of the bond strength between the phases preset in concrete. The test is similar to the three points bending test, generally performed on fiber reinforced concrete (fib 2013), in terms of load and boundary conditions (see Fig. 14). The main difference is the presence of one aggregate particle in the middle of the sample.

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. 7 Cement Concrete and Aggregates Australia Cement Concrete and Aggregates Australia (CCAA) is the mean national body in Australia representing the interests of six billion dollar a year heavy construction materials industry.

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


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