A study of compressive strength on Roller Compacted Concrete (RCC) using slag as cement replacement material / Walter Fibian Besot

Roller Compacted Concrete (RCC) has almost no slump (zero slump concrete) which makes the RCC mix design different from conventional mix design concrete (CMC). The use of slag (Ground granulated blast-furnace slag) is quite common for RCC projects and generally reduces cost and heat generation, but the percentage of slag used is very important to as it will effect the concrete strength in RCC. This study used 0%, 10%, 20%, 30% and 70% cement replacement.
The objective of the project is to investigate the compressive strength of the RCC.
Compressive strength is one of the important properties of concrete. The strength in compression has a definite relationship with all the other properties of concrete. It means to say that, the other properties are improved with the improvement in the compressive strength.
In this study, RCC mix design was based on the US Army Corps engineering manual (EM 1110-2-2006). The process of the specimen preparation method used was the drop hammer method. This study also tests for slump and compressive strength.
The chosen characteristic strength used was Grade 25 (25 N/mm" at 28 days) which was designed with different percentages of slag.