Engineering Characteristics of Recycled Concrete
Here is test data from an interstate highway project. Of course, every project/product will be different. Address your specific situation accordingly.
| Design: | C/A Ratio: | 7 Day | 14 Day | 28 Day |
| Flexual Comp: | 25% RCY 75% QRY |
710 PSI 4600 PSI |
760 PSI NO DATA |
760 PSI 5730 PSI |
| Flexual Comp: | 50% RCY 50% QRY |
640 PSI 4560 PSI |
690 PSI NO DATA |
700 PSI 5530 PSI |
| Flexual Comp: | 75% RCY 25% QRY |
665 PSI 4700 PSI |
690 PSI NO DATA |
800** PSI 6230 PSI |
| Flexual Target 650 PSI* | Final Design 75% RCY AGG | |||
* DOT’s design specification
** In this scenario the greatest success was achieved with 75% recycled & 25% virgin coarse aggregate.
