Using a Rubber Sheet instead of the Sulfur–capping in the Compressive Strength of Concrete Testing

Abstract

This research aims to study the using a rubber sheet instead of the sulfurcapping in the compressive strength of concrete testing. The parameter of test is the compressive strength of concrete between 180 to 320 kilograms per centimeter. The test results showed that the concrete with using a rubber sheet (fc '(3)) had higher compressive strength than the standard concrete with sulfur-capping (fc' (2)) approximately 7.7%. Therefore, the adjustment factor (Factor) from using a rubber sheet instead of the sulfur-capping in the compressive strength of concrete testing was 0.923 for the compressive strength of concrete is equivalent to the standard testing. A mathematical equation is fc '(2) = 0.923 fc' (3) In addition, the relationship of compressive strength of concrete between fc '(2) and fc' (3) is fc '(2) = 0.88 fc' (3) + 12.04 with a correlation coefficient (r) of 0.988.