Relations between strength and age for soil-cement, with particular reference to the prediction of later strengths from earlier strengths

The relations between strength and age were determined for four soils stabilized with cement for a range of cement contents, moisture contents and cement consignments. Two methods of predicting the 7- and 28-day strengths of cement-stabilized soil from the 1- and 2-day strengths were examined: prediction using a mean ratio of later to earlier strength; prediction by graphical extrapolation from 1- and 2-day strengths. It was concluded that, with both methods, determinations of early strength would provide a satisfactory estimate of later strengths for many soils, and that stabilization works might often be controlled more effectively by an early strength than by a 7-day strength.