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Pratikto Pratikto

Civil Department

Author-ID : 5316018

Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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PEMANFAATAN SUPERPLASTICIZER PADA BETON RINGAN STRUKTURAL BERAGREGAT LIMBAH BOTOL PLASTIK JENIS PET (POLY ETHYLENE TEREPHTHALATE) Pratikto Pratikto
Jurnal Poli-Teknologi Vol. 10 No. 1 (2011)
Publisher : Politeknik Negeri Jakarta

Abstract Selfweight of the structure is very dominant dwelling buildings to the earthquake load. The heavier building the greater of the inertia force due to self weight of the building. Own weight of concrete large enough to reach the density of 2400 kg/m3. Lightweight becomes an alternative to overcome the problem of its own weight because it has a density around 1700 kg/m3. Structural lightweight concrete category has the strength required more than 175 kg/cm2. This lightweight aggregate is obtained from waste plastic bottles that have a logo of PET. The plastic waste is the world's largest waste contributor and included into the class of materials that can not be described by the organism (non bio-degradable), and are durable (persistent) that does not rot. Plastic waste has a reduced weight and not easily change shape and waste PET plastic bottles (Poly Ethylene Terephthalate) can be used as coarse aggregate. This research is to find what is the ratio of the mixture of cement, coarse aggregate and fine aggregates and water along with oxygen enhancer admixture or additive that is suitable for the manufacture of lightweight structural concrete. Superplasticizer and silica fume is needed. A cylindrical test object to obtain the physical properties and mechanical properties of structural lightweight concrete Keywords: Lightweight Concrete, Waste PET plastic bottle, Weight own, lightweight aggregate.

Beton Ringan Ber-agregat Limbah Botol Plastik jenis PET (Poly Ethylene Terephthalate) Pratikto Pratikto
Jurnal Poli-Teknologi Vol. 9 No. 1 (2010)
Publisher : Politeknik Negeri Jakarta

Abstrak Konstruksi bangunan umumnya terdiri dari beton sebagai bahan konstruksi karena mempunyai beberapa kelebihan dan kekurangan seperti lemah terhadap tarik dan juga mempunyai berat sendiri beton yang cukup besar sampai mencapai berat jenis 2400 kg/m3.. Peranan berat sendiri didalam struktur bangunan gedung bertingkat sangatlah dominan khususnya bila dilakukan analisa terhadap beban gempa. Semakin berat bangunan maka semakin besar gaya inersia yang ditimbulkan akibat berat sendiri bangunan. Beton ringan menjadi salah satu alternative untuk mengatasi masalah berat sendiri karena mempunyai berat jenis sekitar 1700 kg/m3 . Agregat ringan ini dapat diperoleh dari limbah botol plastik yang mempunyai logo PET. Sampah plastik adalah penyumbang sampah terbesar didunia dan termasuk kedalam golongan material yang tidak dapat diuraikan oleh organisme (non bio-degradable), serta bersifat tahan lama (persistent) yang tidak membusuk. Hal yang dapat dilihat langsung dari limbah ini adalah berat yang ringan dan tidak mudah berubah bentuk dan limbah botol plastik PET (Poly Ethylene Terephthalate) akan dijadikan agregat kasar. Sifat fisis dan sifat mekanis dari beton ringan dalam penggunaan limbah botol plastik jenis PET sebagai pengganti agregat kasar harus sesuai dengan peraturan yang ada. Dari penelitian ini didapatkan rasio perbandingan untuk campuran setiap m3 beton ringan adalah semen 263kg, Pasir 420kg, Air 279kg dan Agregat PET 559kg pada pemakaian additive 50ml Kata kunci : Beton Ringan, Limbah botol plastik PET, Berat sendiri, agregat ringan.

BETON INSTANT TANPA SEMEN DAN TANPA PEMADATAN MANUAL PRATIKTO PRATIKTO; ANNI SUSILOWATI
Jurnal Poli-Teknologi Vol. 12 No. 1 (2013)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v12i1.492

ABSTRACT The so called self compacting geopolymer concrete can be a response to the weakness of conventional concrete cause the need of cement and compaction process. Global warming caused by greenhouse gas emissions , such as co2 as a result of the use of portland cement can be reduced. Instant concrete will consist of aggregates and a mixture chemical composition of geopolimer in the absence of water. The activator of geopolymer concrete used alkaline solution consisting of sodium hydroxide ( naoh ) and sodium silicate , with fly ash binder . Variation of water binder ratio ( wbr ) from 0.30 , 0.25 and 0.20 combined with superplasticizer of 1% and 2 % . Aggregate to be used is split with a diameter of 10mm and fine aggregate sand. Results are mixed composition : naoh = 1 ; na2sio3 = 2 ; water = 1.8 ; fly - ash = 7.1 ; aggregate fine = 7.3 and split aggregate = 11 , with 20 % of superplasticizer . Used as a test specimen cylinders and beams for strength testing . Testing was conducted on the workability , flowability , and segregation . Blocking value ratio , and compressive strength testing will be a concrete value for this measure . Flowability testing , used lshaped box , j - ring test and v - funnel test while testing the workability with slump flow test used slump cone . Results obtained in the form of aggregate composition and compound of geoplolimer wrapped in bags to be used as an instant concrete Keywords: alkali solution, flowability, l-shaped box, self compactinggeopolymer concrete, slump flow

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