Colas - background image


In order to ensure that slurry designs are completed timeously, clients are encouraged to make the necessary arrangements with the Colas branch from which the binder will be supplied for a particular contract, prior to submitting aggregate to Colas Central laboratory for evaluation. Please note that Colas Central laboratory requires three (3) to seven (7) working days in order to complete a slurry design, depending on the laboratory’s work load at the time of the request. Clients are therefore encouraged to plan accordingly and request slurry designs well in advance.