PENGARUH PEMBERIAN PERAWATAN STEAM CURING TERHADAP KEKUATAN DAN DURABILITAS BETON DENGAN SEMEN POZZOLAN (EFFECT OF STEAM CURING ON STRENGTH AND DURABILITY CONCRETE WITH CEMENT POZZOLAN)

Abstract

The use of concrete as a building material has been developed both in quantity and quality
aspects. Concrete production time is long term in a foundry to make many breakthroughs to make
a concrete material that fast food, such as precast concrete. The use of precast concrete in the area
of an aggressive environment than expected strength factors are also needed high durability,
including resistance to porosity and permeability properties of concrete.
This research was conducted with the cooperation of one of Precast Concrete Factory in East
Java, including the manufacture of 15x15x15 cm cube of concrete and steam curing system.This
variable on research ; use the type of cement (pozzolan cement and cement type-1), the length of
steam (5 and 7 hours), and the quality concrete (K350 and K700). As for the testing performed on
compressive strength, permeability and porosity of concrete.
This study concluded that steam curing system to provide early strength concrete that is
better than conventional curing (non-steam), where compressive strength of the post-steam can
reach 51% of high-strength concrete (K700) with the results 361 kg/cm2, whereas in normal
concrete (K350) reached 52% (compressive strength 192 kg/cm2). Pozzolan cement concrete also
has the advantage in increasing the durability of concrete, especially in high-strength concrete,
where the concrete porosity becomes smaller either by steam curing and non-steam. Permeability
of concrete is given a steam becomes smaller than the normal concrete with conventional curing
(non-steam).

Key word : steam curing, pozzolan cement, strength of concrete