Estimating early-age in situ strength development of concrete slabs

Abstract

Post-tensioned concrete members are becoming very popular around the world due to structural efficiencies. However, some important issues related to concrete properties are not resolved yet. A more accurate prediction of the in situ early-age strength is needed to allow for the application of the post-tensioning (PT) load without causing any damage to the PT anchorage zone concrete. Strength-maturity functions are conventionally used to estimate the in situ concrete strength on the basis of a datum temperature. Temperature Match Curing (TMC) is an alternative method which provides a more representative estimate of the in situ strength. In this paper, the prediction of in situ strength of sla..