Tinjauan Kekuatan Beton dengan Bahan Dasar Pasir dan Kerikil Trengguli dari Jenawi Karanganyar Sebagai Bahan Agregat Halus dan Kasar

Concrete is a mixture of cement, coarse aggregate, fine aggregate and water. Sometimes wear materials that vary greatly, ranging from chemicals plus materials, fiber to non-chemical building materials at a certain percentage. In this research to know strength of compressive strength and tensile strength of concrete use of local aggregate that is sand and gravel of Trengguli from Jenawi Karanganyar. This study also finds out the strength difference with aggregate as it is in the field and aggregate after washing. The number of specimens for each aggregate variation is, after washing and for normal concrete with a fase of 0.4 and 0.5 of 3 pieces, so that the total number of specimens is 36. The test specimens used are cylindrical in diameter 15 cm and 30 cm high. On the test results of compressive strength and maximum tensile strength obtained on aggregate variation after washing with fas 0,4. Aggregate as it is, yields a compressive strength of 19.81 MPa at 0.4 and 2.00 MPa fas on 0.4 for tensile strength. Aggregate after washing yields a compressive strength of 21.51 MPa on a fase of 0.4 and for tensile strength of 2.25 MPa at 0.4 phases. While for normal concrete the resultant strength of 25,47 MPa pressed on fas 0,4 and tensile strength equal to 2,97 MPa at fas 0,4