|Recent research has determined that conventional wisdom of designing concrete mixes for very high early strengths to open the pavement to traffic early may not be the best approach. Typically, high early strength mixes contain additional cement in order to obtain design strength faster, but end up with a 28 day strength much higher than design. This additional cement not only increases initial cost but more importantly, may reduce long term durability. The Concrete Pavement Technology Center recently published a technical summary entitled ‘Optimizing Concrete Pavement Opening to Traffic’ which examines these considerations and suggests that a much better approach may be to redefine our opening to traffic strengths to something much lower than what we are using today. Click HERE to download your free copy.