ABSTRACT
Practical experience (7) has shown that recycled aggregate concrete is as easy to batch, mix, transport, place, compact, and finish as conventional concrete. However, because of the relatively high water absorption of recycled aggregate, it is sometimes recommended to
batch recycled aggregates in a pre-soaked state and as close to a saturated surface dry condition as possible, see (98) and (11). This presents practical problems to the concrete manufacturer, which according to Morlion et al. (135t) can conveniently be overcome by immersing the aggregates for one hour in water before mixing. Kaga et al. (135m) found that more than 24 hours of immersion in water was neccesary for complete saturation of recycled coarse aggregates.
