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Compressive strength of non-sand concrete with coarse aggregate in Kolaka district as yard pavement
Mansyur
Aip Conference Proceedings
Abstract
Concrete is one of the most common forms of building structures used in the construction world because of its strong resistance to compressive forces and is generally composed of sand, cement, water and gravel. At this time the use of concrete has made many innovations not only in the structural scope but has been applied to the non-structural scope. No fines concrete is a simple form of lightweight concrete, which does not use fine aggregate (sand) in its manufacture. The absence of fine aggregates in the mixture results in porous concrete so that the weight is reduced. Non-sand concrete can also be called permeconcrete or pervious concrete, which is concrete formed from a mixture of cement, coarse aggregate, and water with added materials or admixture. This research is in the form of experimental tests in the laboratory. Non-sand concrete is made with a water cement ratio of 0.4. The ratio between cement and coarse aggregate used is 1: 3, 1: 4, 1: 5 and 1: 6. The results show that the ratio of cement-aggregate volume in the ideal non-sand concrete mixture is 1: 3 where the compressive strength of the object cylinder test is 6.039 MPa with cement requirement per m3 of 522.85 kg. The volume weight of non-sand concrete per m3 at a ratio of cement aggregate volume 1: 3 is 1956 kg/m3. Including the type of lightweight concrete. The greater the ratio of the volume of cement: aggregate, specific gravity, the lower the compressive strength is obtained.