Research of Curing Type and Application Time on Roller Compacted Concrete Pavements

Due to the very dry consistency of roller compacted concrete (RCC) pavements the curing of RCC compared to conventional concretes, requires much more attention and important. In this thesis, the most suitable type of curing and application time for RCC pavements were researched and strenght properties of RCC were investigated. Within the scope of the study, a mixture with standards of 350 kg cement dosage was prepared according to optimum moisture contents as a result of the modified proctor test. It was applied to this mixture 15, 30, 60 min. and immediately after casting in four different time periods four different cures consisting of chemical curing, burlap, membrane and water were applied for 7 days. On the cured samples, experiments like uniaxial compression test, flexural strength test, ultrasonic pulse velocity test and schmidt rebound hammer test were carried out Based on the results obtained, water cure technique has been determined as the most suitable curing method for RCC. This method followed the membrane cure. For water cure technique the best application time was 60 min. after casting has been determined. The time period for which compressive strength for opening to public traffic was found to be seven hours. Key Words: Roller Compacted Concrete, Curing, Strenght Properties.