Raharjo, Bobby Asukmajaya (2017) Evaluasi Blok Tegangan Tekan Ekuivalen Balok Beton Bertulang Agregat Limbah Batu Onyx. Magister thesis, Universitas Brawijaya.
Abstract
Pemenuhan kebutuhan material pembangunan yang semakin meningkat membuat kita berfikir untuk mencari alternatif pemanfaatan material lain, salah satunya pada beton dengan cara mengganti agregat kasar dengan limbah batu onyx. Penggantian agregat normal ke limbah batu onyx tentu akan membuat parameter kekuatan beton menjadi berbeda antara lain diantaranya adalah kuat tekan dan modulus elastisitasnya. Kuat tekan dan modulus elastisitas mempengaruhi nilai blok tegangan tekan ekuivalen (β1) karena membuat luasan kurva tegangan regangan pada beton yang berbeda. Pada penilitian ini berusaha membandingkan nilai kuat lentur balok beton tulangan tunggal secara analitis menggunakan nilai β1 yang telah dievaluasi dengan nilai kuat lentur secara eksperimental. Pengujian yang dilakukan untuk beton dengan agregat normal dan limbah batu onyx adalah uji kuat tekan, modulus elastisitas, dan uji kuat lentur balok beton bertulang. Benda uji yang digunakan untuk pengujian kuat tekan dan modulus elastisitas beton adalah silinder beton yang berjumlah 40 buah, untuk pengujian kuat lentur balok beton bertulang menggunakan balok dengan ukuran 15 x 20 x 200 cm yang berjumlah 20 buah. Hasil penelitian ini diperoleh rata - rata kekuatan tekan dan elastisitas modulus beton normal sebesar 35,72 MPa dan 27277,02 MPa, untuk beton agregat limbah onyx adalah 32,92 MPa dan 27106,79 MPa. Dari hasil analisa didapatkan nilai blok tegangan tekan ekuivalen rata - rata sebesar 0,874 untuk beton dengan normal dan 0,868 untuk beton limbah batu onyx. Sehingga dengan menggunakan nilai blok tegangan tekan yang baru didapatkan nilai kuat lentur analistis sebesar 170650,21 kg.cm dengan nilai eksperimental sebesar 172625,75 kg.cm. Sementara untuk beton dengan agregat limbah batu onyx didapatkan nilai analitis sebesar 167780,21 kg.cm dengan nilai eksperimental sebesar 168300,00 kg.cm
English Abstract
Increasing demand of construction materials has pushed people to find alternative materials that may be used. Onyx waste (produced by onyx industry) has been used as one of the alternatives for concrete coarse aggregate. However, with changing from normal rock aggregate to onyx, concrete strength parameters such as compression strength and elasticity modulus will also change. Moreover, concrete strength and elasticity modulus will affect produced equivalent stress block parameter of β1, as the stress-strain curve will also change. This study aimed to observe flexural strength of singly reinforced concrete beam with β1 value produced and evaluated by experimental observation. Conducted experiment test for both concrete with normal aggregate and onyx waste aggregate were compression strength test, modulus elasticity test and flexural test for beam specimens. Specimens used for strength compression test and modulus of elasticity were 40each of compression cylinder. While, beam specimens with 15x20x200cm for width, breadth and length respectively were employed for flexural strength test. From laboratory experiment, average compressive strength and elasticity modulus for concrete with normal aggregate are 35,72Mpa and 27277,02 Mpa respectively. While average compressive strength and elasticity for concrete with onyx waste aggregate are 32,92 Mpa and 27106,79 Mpa respectively. From analysis, value for stress block equivalent were found 0,874 and 0,868 for concrete with normal aggregate and concrete with onyx waste aggregate respectively. Therefore, with new stress block equivalent value, flexural strength by analysis were found 170650,21 Kgs.cm, verified by experimental result of 172625,75 Kgs.cm for concrete with normal aggregate. In the other hand, flexure strength by analysis were found 167780,21 Kg.cm verified by experimental result of 168300,00 Kg.cm for concrete with waste onyx aggregate.
| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | TES/620.191/RAH/e/2017/041802257 |
| Uncontrolled Keywords: | AGGREGATES ( building materials), REINFORCED CONCRETE CONSTRUCTION, ONYX MARBLE, CONCRETE BEAMS |
| Subjects: | 600 Technology (Applied sciences) > 620 Engineering and allied operations > 620.1 Engineering mechanics and materials > 620.19 Other engineering materials > 620.191 Soils and related materials |
| Divisions: | S2/S3 > Magister Teknik Sipil, Fakultas Teknik |
| Depositing User: | Nur Cholis |
| Date Deposited: | 04 Jan 2019 01:48 |
| Last Modified: | 21 Oct 2021 01:58 |
| URI: | http://repository.ub.ac.id/id/eprint/162476 |
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