Studi Kelayakan Material Gunung Dalam Penggunaannya Sebagai Salah Satu Material Beton (Studi Kasus Material Pasir Watumeze Dan Agregat Batu Pecah Boba-Radha Kabupaten Ngada)
Abstract
Kata Kunci : kualiats agregat, kuat tekan beton,kuat tarik beton, Watumeze dan Boba-radha
ABSTRACT
Agaregat Watumeze and Boba-radha become an importsnt commodity in Ngada and surrounding and counties, is a building material. Agaregat should meet various technical requremnts. But as the quality of the natural materil obviously heavily infulenced agaregat Watumeze and Boba-radha clear condition environment where they were takken. Research to do in laboratory with conrete to know pressure strong of cube and chylinder with size for puul strong of cube 15 x 30 cm, where forb concrete compressive strength test specimens made of 9 pieces and 5 pieces of concrete tensile specimens with mixure ratio 1 cement: 2,80 gravel: 1,87 sand. The preliminary test of the mountain Watumeze and Boba-radha agaregat shiwed that themoisture content was 0, 60%, specific gravity 2,47 and density of coarse agaregat smooth 2, 53, obsorption for rough agaregat for 2, 32% and agaregat smooth 21, 27%. Compressive strength of concrete at the age of 3 days converted to 28 days of 331,10 kg/cm2, Watumeze and Boba-radha quality material is used as a conncret clss 1, but for concreate grade 2 can still be used even if seen from abrasion conditions because that it exceeds the SNI as big as 40%.
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