Artikel Ilmiah : H1D012007 a.n. KRISNA MAHARANDI WIJAYA
| NIM | H1D012007 |
|---|---|
| Namamhs | KRISNA MAHARANDI WIJAYA |
| Judul Artikel | PENGARUH PENAMBAHAN SUPERPLASTICIZER & CALCIUM STEARATE TERHADAP TINGKAT ABSORBSI DAN KOROSI BAJA TULANGAN PADA BETON MUTU 30 MPA |
| Abstrak (Bhs. Indonesia) | Melihat banyaknya infrastruktur yang direncanakan oleh pemerintah terutama dalam bidang keairan, maka dari itu penggunaan struktur beton bertulang pada daerah agresif atau yang selalu terkena air laut sangat berisiko terhadap terjadinya korosi pada tulangan akibat adanya infiltrasi dari unsur garam pada air laut, Untuk mengurangi resiko korosi tulangan maka beton dibuat sekedap mungkin terhadap air. Untuk itu dilakukan penambahan superplasticizer & calcium stearate ke dalam beton untuk mengurangi tingkat absorbsinya. Superlasticizer yang digunakan adalah 2,075 l/m3 dan calcium stearate digunakan pada penelitian dengan variasi penambahan ke dalam beton sebanyak 0 kg, 1 kg, 5 kg, dan 10 kg per m3 beton. Tujuan dalam penelitian adalah untuk mengetahui pengaruh penambahan superplasticizer & calcium stearate terhadap tingkat absorbsi beton dan korosi baja tulangan, dan juga mengetahui penggunaan superplasticizer untuk peningkatan workability proses pengerjaan.Sampel benda uji absorbsi berupa silinder beton berukuran diameter 8 cm dengan tinggi 16 cm. Sedangkan sampel benda uji korosi berupa balok beton berukuran 10x10x20 (cm) yang diberi tulangan baja berdiameter 12 cm. Hasil pengujian diperoleh penurunan tingkat absorbsi sebesar 52,88%, 84,13% dan 90,38% untuk masing-masing penambahan calcium stearate 1 kg, 5 kg, dan 10 kg per m3 beton. Sedangkan pada pengujian korosi buatan diperoleh penurunan resiko korosi pada baja tulangan untuk masing-masing penambahan calcium stearate 1 kg, 5 kg, dan 10 kg per m3 beton berturut-turut sebesar 5,4%, 16,06%, dan 89,53%. Sehingga dapat disimpulkan bahwa semakin banyak penambahan calcium stearate mengakibatkan tingkat absorbsinya menurun dan laju korosinya pun menurun. |
| Abtrak (Bhs. Inggris) | Considering the number of infrastructure planned by the goverment, especially in the maritim sector, there for the use of reinforced concrete structure in the aggressive area or always exposed by sea water very risky against the corrosion of the reinforcement due to infiltration of salt from sea water, including chloride and sulfate. These elements enter and seep into the concrete through the pores of the capillaries in the concrete, so that concrete change of chemical properties from alkaline to acid. As a result of these changes, the passive layer on the surface of the steel reinforcement was damaged and causing a chemical reaction betwen steel ions OH¯ or Cl¯. The reaction formed residual substances in the form of rust whose volume can reach 2 to 10 times the volume of steel reinforcement. To reduce the risk of corrosion of the steel reinforcement, so the concrete is made watertight. Superplasticizer and Calcium stearate are added into the concrete to reduce the level of concrete absorption. Superplasticizer was used in 2,075 l/m3and Calcium stearate was used on research with a variety of addition into the concrete as much as 0, 1, 5 and 10 kg/m3 of concrete. The purpose of the research was to determine the effect of addition superplasticizer and calcium stearate against the level of concrete absorption and corrosion of steel reinforcement and also to determine the use of superplasticizer to improve the workability of the process. Absorption testing method referring to SKSNI S-36- 1990-03 while the corrosion testing using artificial electrochemical corrosion testing method. Absorption test samples using a cylinder concrete diameter of 8 cm with a height of 16 cm. Corrosion test sample using a concrete beam with size 10x10x20 (cm) which are given steel reinforcement diameter 12 cm. The test results obtained a decrease in the rate of absorption of 52,88%, 84,13% and 90,38% for each addition of calcium stearate 1, 5 and 10 kg/m3 of concrete. Whereas the artificial corrosion tests obtained redused risk of corrosion of the steel reinforcement for each addition of calcium stearate 1, 5 and 10 kg/m3 of concrete row of 5,4%, 16,06% and 89,53%. So it can be concluded that the more of the addition of calcium stearate resulted in decreased levels of absorption and redused the corrosion of steel reinforcement. |
| Kata kunci | beton kedap air, calcium stearate, absorbsi, korosi |
| Pembimbing 1 | Dr. Eng Agus Maryoto,S.T.,M.T. |
| Pembimbing 2 | Gathot Heri Sudibyo.ST.,MT |
| Pembimbing 3 | |
| Tahun | 2017 |
| Jumlah Halaman | 20 |
| Tgl. Entri | 2017-04-07 22:50:33.116064 |