Date of Award


Publication Type

Master Thesis

Degree Name



Civil and Environmental Engineering


Engineering, Civil.


Hearn, N.




The personnel at Prestressed Systems Incorporated (PSI) suspected that use of the zero slump test cylinders to measure the compressive strength of hollowcore concrete was not reliable. If a test cylinder failed only by a chipped edge while being tested for compressive strength, it was not useful for determining the time at which the prestressing force in the tendons can be transferred into the bed of hollowcore. A more reliable method was sought to quantify the compressive strength of zero slump concrete at the time of tendon release. The method should also provide real-time information on the progress of concrete strength development and result in savings associated with the mix design, labour and accelerated curing energy optimization. A non-destructive Maturity Method has been proven effective in other studies focused on determining compressive strength of concrete. This research describes the implementation of the Maturity Method in the precast hollowcore plant at PSI. (Abstract shortened by UMI.)Dept. of Civil and Environmental Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2003 .O43. Source: Masters Abstracts International, Volume: 42-02, page: 0639. Adviser: N. Hearn. Thesis (M.A.Sc.)--University of Windsor (Canada), 2003.