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PEMANFAATAN RECYCLING ASPAL SEBAGAI CAMPURAN BETON PADA PLAT ATAP Dewi Sulistyorini; Iskandar Yasin; Basilius Emilda Judu
Science Tech: Jurnal Ilmu Pengetahuan dan Teknologi Vol 4 No 1 (2018): Februari
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (740.657 KB) | DOI: 10.30738/jst.v4i1.2481

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui kuat tekan dan kuat lentur pelat beton recycling aspal sebagai penambah agregat halus dengan perkuatan kawat kasa. Sehingga melalui penelitian ini diharapkan penggunaan recycling aspal sebagai pengganti agregat halus serta penggunaaan  kawat kasa dapat diaplikasikan dalam dunia konstruksi. Benda uji berupa silinder beton ukuran diameter 150 mm tinggi 300 mm dan plat beton berukuran panjang 500 mm, lebar 250 mm dan tebal 100 mm. Perkuatan pada plat beton berupa kawat kasa 6 mm x 6 mm. Variasi recycling aspal terhadap pasir yang digunakan adalah 0%, 10%, 20%, dan 30%. Hasil pengujian kuat tekan pada prosentase beton recycling aspal 10 % mengalami penurunan sebesar 22,14 % terhadap beton normal, dan prosentase beton recycling aspal 20 % mengalami penurunan sebesar 11,47 % dan pada beton recycling aspal 30 % mengalami penurunan prosentase sebesar 9,83 %. Berdasarkan nilai uji kuat lentur pada prosentase beton recycling aspal 10 % mengalami kenaikan sebesar 4,65 % terhadap beton normal, dan prosentase beton recycling aspal 20 % mengalami kenaikan sebesar 41,21 % dan pada prosentase beton recycling aspal 30 % mengalami kenaikan sebesar 24,73 % terhadap beton normal. Kenaikan kuat lentur dipengaruhi adanya kawat kasa sebagai perkuatan.
PENGARUH PENAMBAHAN SUPERPLASTISIZER TERHADAP CAMPURAN BETON RINGAN YANG MENGGUNAKAN STYROFOAM Kusnadi Kusnadi; Dewi Sulistyorini
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 7, No 2 (2011): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1300.485 KB) | DOI: 10.21831/inersia.v7i2.3684

Abstract

The risk of failure of structures effect of earthquake be high due to the heavyvolume of concrete has a fairly high (2400 kg/m3). Advances in technology and theimpact of the economic crisis encourage construction of infrastructure use concretemasonry units under 1900 kg/m3 in weight. The use of lightweight concrete is thefiller material styrofoam intend at non structural components like wall. One of theproblem of making lightweight concrete using styrofoam is the low value of slump, sothat the mix becomes difficult (low workability). It is therefore necessary to addmaterial superplastisizer This research used 20 cylinder test samples. Thecomposition of the mixture consists of sand, cement and grain of styrofoam. Thestyrofoam in concrete is 20% in volume. The Sample variation consists of lightweight concrete using styrofoam without superplastisizer is four cylinder, with addedsuperplastisizer four cylinder were 0.5%, 1.0%, 1.5% and 2%, respectively in weightof cement. The results showed the addition of superplastisizer 0.5%, 1%, 1.5% and2% of the cement weight increases the value of slump were 100%, 183%, 216% and507% respectively. The addition of superplastisizer 0.5%, 1%, 1.5% and 2% of thecement weight increase ceompression strength were 8.48% 4.25%, 12.67% and17.37% respectively. The addition of superplasticizer will increases the slump for thesame water content in fresh concrete, so can increase the compressive strength ofconcrete cylinder.Keyword : beton styrofoam, workabilitas, superplasticizer