PENGUJIAN MUTU AGREGAT HALUS DAN AGREGAT KASAR DARI SUNGAI SLOG-SAGAN GLENO KABUPATEN ERMERA (TIMOR-LESTE) TERHADAP KUAT TEKAN BETON

Abstract

Aggregate slog-sagan Gleno become an important commodity in Timor-Leste Ermera district and surrounding areas, namely as a building material. aggregates must meet various technical requirements, but as a natural ingredient quality aggregate slog-sagan Gleno Ermera district clearly much influenced by the state of the place and the environment were taken. The
study was conducted in laboratory with concrete cubes 15 x 15 cm to determine the compressive strength of concrete and cylindrical with a size of 15 x 30 cm for the compressive strength of concrete compressive strength beton.dimana made 9 specimens and cylinder 9 specimens with Comparative mixture of 1 cement: Gravel 1.65: 2.47 Sand Preliminary test against the aggregate of the mountain naru showed that the water content is 0:39%, specific gravity 2:48 coarse aggregate and fine aggregate specific gravity to 2.67, the absorption of coarse aggregate by 3.23% and fine aggregate is 0.725%,. Los Angelos abrasion test machine at a speed of 30-33 rpm is 55.45%. Compressive strength of concrete at the age of 7 days converted to 28 days amounted to 197.060 Kg / cm2, Rough River Slog-sagan is used as the material quality of the concrete class 1 (Bo and B1), but for concrete grade 2 can still be used even when seen from the terms of abrasion that does not is justified, because it has been surpassed by 40% SNI requirements.

Keywords: Concrete Compressive Strength, Aggregate river, slog-sagan

ABSTRAK

Agregat Sungai Slog-sagan Gleno menjadi komoditas penting di kabupaten Ermera dan sekitarnya, yaitu sebagai bahan bangunan, agregat harus memenuhi berbagai syarat teknis. Namun sebagai bahan alam kualitas agregat Slog-Sagan jelas banyak dipengaruhi oleh keadaan tempat dan lingkungan pengambilannya. Penelitian dilakukan dilaboratorium dengan kubus beton 15 x 15 cm untuk mengetahui kuat tekan beton dan selinder dengan ukuran 15 x 30 cm untuk kuat beton.dimana untuk kuat tekan beton dibuat kubus 9 buah benda uji selinder beton 9 buah benda uji dengan Perbandingan campuran 1 semen : 1,65 Kerikil : 2,47 Pasir. Uji pendahuluan terhadap aggregat dari gunung naru menunjukan bahwa kandungan air adalah 0.39%, berat jenis agregat kasar 2.57 dan berat jenis untuk agregat halus 2.49, penyerapan untuk agregat kasar sebesar 3.000 % dan agregat halus adalah 0,725%,. Abrasi dengan mesin Los Angelos Test pada kecepatan 30-33 rpm adalah 55.45%. Kuat tekan beton pada umur 7 hari dikonversi ke 28 hari sebesar 197,88 Kg/cm2.

Kata Kunci : kualiats agregat, kuat tekan beton.