Durability Studies of Structural and Paving Concretes

摘要

A report is given of a two-year research project on methods for analysis of hardened concrete. The major effort was directed toward improvement of the linear traverse technique. This included development of an automatic void sensing device to improve the speed and reliability of readings, development of data aquisition facilities and computer programs to accommodate the higher speeds and to eliminate a previous bottleneck in data reduction, and evaluation of statistical techniques to reduce the length of traverse needed. Another major contribution was the development and testing of a simple, inexpensive gage for determining the effectiveness of concrete curing procedures in the field. Pilot studies on a hypothesized deicer scaling mechanism and a technique for evaluating moisture distribution in concrete pavement slabs were also carried out. (Author)