How Los Angeles test could be better adapted to the recycled concrete aggregate

In order to clarify the significance of Los Angeles test when being used with RCAs, three aspects were investigated: the influence of the number of revolutions, the evolution of the full particle size distribution and the distribution of mortar in the fractions after the test. The standard testing procedure for the Los Angeles index requires the...

Differences between laboratory and in-situ conditions leading to bad estimation of the water absorption capacity of recycled concrete aggregates

Poor estimation of the water absorption coefficient (WA) of recycled concrete aggregates (RCA) engenders inadequate effective water for the recycled aggregate concrete (RAC), leading to poor mechanical properties or poor workability. Pre-saturation of RCA before mixing could appear as a potential technical solution. However, pre-saturation...