A Conceptual Model for Designing Recycled Aggregate Concrete by Marco Pepe

By Marco Pepe

This e-book stories at the actual and mechanical characterization of Recycled mixture Concrete (RAC), produced via a partial-to-total alternative of normal 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 composite nature and better porosity of RCAs. through extending Abrams’ legislation for Recycled combination Concrete, it represents a primary step within the formula of a basic version for predicting the homes of RAC. The theoretical technique offered right here addresses an immense hole within the literature and is anticipated to stimulate new study at the use of this extra sustainable type of concrete in structural applications.

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

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75 mm) (Fig. 19). After grinding, the recycled aggregates were sieved and divided into the three size classes already defined before in Sect. 2. With the aim of reducing the amount of fine materials attached to the surface of recycled aggregates (mainly debris from cement paste and sand, generally referred to as the AM defined above), an autogenous cleaning process was conceived and performed. With this process RCAs are placed in a rotating mill drum and collide against each other while removing pieces of attached mortar.

18). br). During 48 4 Recycled Concrete Aggregates Fig. 18 Homogenisation process the grinding phase, the material was separated into two classes, namely fine and coarse aggregates. 75 mm) (Fig. 19). After grinding, the recycled aggregates were sieved and divided into the three size classes already defined before in Sect. 2. With the aim of reducing the amount of fine materials attached to the surface of recycled aggregates (mainly debris from cement paste and sand, generally referred to as the AM defined above), an autogenous cleaning process was conceived and performed.

The first part of the experimental activity report is aimed at evaluating the key physical and mechanical properties for RCA, such as water absorption, particle density and compressive strength. Moreover, in the last section an innovative alternative processing procedure for RCAs is proposed. The analysis of the experimental results available for RCA particles led to proposing some analytical formulations intended at correlating the main engineering properties of RCAs. 1 State of the Art for Recycled Concrete Aggregates (RCAs) The following sections present an overview of the processing procedures and the current state-of-the-art for RCAs.

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