KAJIAN KUAT TEKAN BETON RINGAN METAKAOLIN BERSERAT ALUMINIUM PASCA BAKAR

Mediyanto, Antonius and Safitri, Endah and Purnomo, Sapto (2010) KAJIAN KUAT TEKAN BETON RINGAN METAKAOLIN BERSERAT ALUMINIUM PASCA BAKAR. Media Teknik Sipil, X. pp. 1-4. ISSN 1412-0976

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    Abstract

    Abstrak Penelitan ini mengamati beton ringan dengan serat alumunium sebagai penguat mikro menghadapi beban alam khususnya kebakaran. Benda uji silinder berdiameter 150 mm dan tinggi 300 mm dibuat untuk selanjutnya diuji kuat tekan. Campuran beton menggunakan serat alumunium dengn aspek rasio 60, semen tipe 1, pasir, ALWA, superplaticizer dan metakaolin. Fraksi serat adalah 0,75% volume beton dan kandungan metakaolin adalah 7,5% berat semen. Pengujian kuat tekan beton mengacu kepada SK-SNI S-36-1990-03. Hasil pengujian menunjukkan bahwa kuat tekan beton ringan meningkat 12,31% dengan adanya serat alumunium dan 23,54% dengan adanya serat aluminum dan metakaolin dibandingkan dengan beton ringan normal. Pembakaran benda uji 500 0C yang dikombinasikan dengan curing dalam air, kuat tekan beton ringan meningkat 47,61% pada benda uji yang mengandung serat alumunium saja dan meningkat 11,79% pada benda uji yang mengandung serat alumunium dan metakaolin. Namun, benda uji yang mengalami pembakaran 300 0C, 400 0C dan 500 0C tanpa curing, pembakaran cenderung menurunkan kuat tekan beton. Kuat tekan beton ringan rata-rata benda uji tanpa serat pada variasi suhu tersebut mengalami penurunan 14,53%, 18,27% dan 42,21%. Pada variasi pembakaran suhu yang sama, kuat tekan rat-rata beton ringan dengan serat alumunium mengalami penurunan 26,72%, 27,52% dan 50,61%. Sedangkan benda uji beton ringan berserat alumunium yang mengandung metakaolin yang dibakara pada tiga tingkatan suhu tersebut mengalai penurunan kuat tekan 27,76%, 29,29% dan 35,74%. Hal ini mengindikasikan bahwa serat alumunium dan metakaolin memperbaiki kinerja kuat tekan beton setelah terbakar dan mengalami curing. Kata kunci: beton ringan, beton ringan berserat, metakaolin, pasca bakar, serat alumunium Abstract The research concerns on strenght of lightweight concrete with aluminium fibre as micro-reinforcement by enviromental load especially burning. Some cylindrical form of concrete of 150 mm dia, 300 mm high for compressive strenght test were made. Mixtures used aluminium fibres with aspect ratio of 60, cement type I, sand, ALWA, water, superplasticizer and metakaolin. The volume fraction of aluminium fibre was 0,75% and the used metakaolin was 7,5% of cement weight. Testing was based on SK SNI S–36–1990–03. The result shows that the average compressive strenght of lightweight concrete increases 12.33 % and 23.54% due to the addition of aluminium fibre and metakaolin respectively compared to plain lightweight concrete. As the sample was burned at 500˚ C then cured in water, the average of compressive strength was recorded higher 47,61% by samples containing aluminium fibre and 11,79% by samples containing aluminium fibre and metakaolin. However, samples those have been burned at 300 0 C, 400 0 C dan 500 0 C without curing, the fire burning tent to decrease the sample compressive strength. The average compressive strength of plain lightweight concrete at those respective temperature decreases 14,53%, 18,27% and 42,21%, while samples of lightweight concrete with aluminium fibres decreases 26.72 %, 27,52 and 50.61% and lightweight concrete with aluminium fibres and metakaolin decrease 27.76 %, 29,29 and 35.74%. This indicates that aluminium fibre and metakaolin improve the compressive strength performance of light weight concrete both before and post fibre burning combined with curing process Keywords : aluminium fibre, metakaolin light weight concrete, burning.

    Item Type: Article
    Uncontrolled Keywords: beton ringan, beton ringan berserat, metakaolin, pasca bakar, serat alumunium aluminium fibre, metakaolin light weight concrete, burning.
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Divisions: Fakultas Teknik > D3 - Teknik Sipil
    Pasca Sarjana > Magister > Teknik Sipil - S2
    Depositing User: Fairly Okta'mal
    Date Deposited: 09 Jul 2013 12:52
    Last Modified: 09 Jul 2013 13:12
    URI: https://eprints.uns.ac.id/id/eprint/1527

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