Discussion of "Three-Day Prediction of Concrete Compressive Strength Evolution", by Marco Viviani, Branko Glisic, and Ian F.C. Smith (With Authors' Closure)

This article provides a discussion of the aforementioned article published in this journal in July 2005. The discusser presents his concern that, while the proposal is well researched, it does not present a new solution that would be competitive in effort, expense or earliness to a previously reported technique for predicting concrete strength evolution at an early age. The authors respond with appropriate comments, and states that the previous study mentioned by the discusser estimated rather than predicted the strength of concrete.