What mixture design and proportioning issues should be considered when proportioning concrete using RCA?
• What production issues should be considered when making concrete with RCA? • What construction issues should be addressed when paving with concrete containing recycled aggregates? • What are the costs associated with using high-quality RCA? • Are there any reference materials on the use of recycled concrete as aggregate? • What is the purpose and scope of this Technical Advisory? This Technical Advisory issues information on state-of-the-practice and guidance for the use of recycled concrete pavement as aggregate in concrete used for pavements. • Does this Technical Advisory supersede another Technical Advisory? No. This is a new Technical Advisory. • What are the key definitions? • Recycled concrete aggregate (RCA). RCA is granular material manufactured by removing, crushing, and processing hydraulic-cement concrete (see paragraph 3b) pavement for reuse with a hydraulic cementing medium to produce fresh paving concrete. The aggregate retained on the 4.75 mm (No. 4) sieve is called c
