Development of the Conversion Value for Permeability, Absorption in Concrete

Abstract

The development of construction technology today, allowing construction of high-rise building that has 20 floors or more simply the floor 5-7 cycles /day, so the time of completion of construction of the building quickly. The implication aspects of cost control, quality, time should be more strict and quick in decision making. One of the critical factors of success achieved work-storey building is the decision of determining material to be used. To besment whether using normal concrete (without admixture) or integral concrete waterproofing. Therefore it is necessary to use parameters or standards. Permeability, absorption and compressive strength of concrete. Standard generally used for permeability, absorption and compressive strength of concrete at the time was 28 days. Determination of the age of 28 days is often a problem that resulted in delays in the on going work. One of the parameters that is needed is the conversion value that can be used on the job besment, thus making receipt of material at an early age concrete. This study is very significant to generate the conversion value of permeability, absorption and compressive strength of normal concrete for concrete compressive strength: ƒ'c 30 MPa, 35 MPa ƒ'c, ƒ'c 40 MPa, 45MPa ƒ'c and ƒ 'c 50 MPa, so it can be used as a standard in determining the material used.