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Kuat Tekan dan Kuat Tarik Belah Beton Polimer Termodifikasi Alami Amylum serta Bahan Tambah Madu Nugroho, Febri Satrio; Rizalditya, Putra Bintang; Susilorini, Rr.M.I Rretno; Santosa, Budi
G - SMART Vol 1, No 2 (2017)
Publisher : G - SMART

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Abstract

Penelitian ini menggunakan amylum sebagai polimer termodifikasi dan madu sebagai bahan tambahnya, dengan madu memiliki 3 kompoisi yaitu, 0 %; 0,03 %; dan 0,3%, serta di setiap komposisi madu terdapat 6 kompoisisi amylum yaitu, 0,1 %; 0,2 %; 0,5 %; 1 %; 2 %; dan 5 %. Jumlah benda uji berukuran panjang 20 cm, dan diameter 10 cm adalah 270 benda uji untuk pengujian kuat tekan, dan jumlah benda uji berukuran panjang 30 cm, dan diameter 15 cm total adalah  90 benda uji untuk uji kuat tarik belah. Hasil penelitian menunjukkan bahwa: (1)Pada pengujian kuat tekan beton, hasil optimum yang didapat adalah benda uji KT-M0,03-G dengan komposisi bahan tambah madu sebesar 0,03% dan amylum sebesar 0,5% dari berat semen; (2)Pada pengujian kuat tarik belah beton, didapat hasil optimum pada benda uji KTB-M0-A dengan komposisi madu 0% dan amylum 0,10% dari berat semen.Kata Kunci: beton polimer termodifikasi; kuat tekan; kuat tarik belah;  amylum; maduABSTRACT  The resesearch used amylum as a modified polymer and honey as its added ingredient. There were with 3 compositions with honey, 0%; 0.03%; and 0.3%, and also 6 amylum compositions, 0.1%; 0.2%; 0.5%; 1%; 2%; and 5%. The number of specimens with 20 cm in length and 10 cm were 270 that were tested for compressive strength, and the number of specimens with 30 cm length and 15 cm in diameter were 90 that tested for splittingtensile strength. The results of this research met conslusions: (1). Optimum compressive strength achieved by specimen KT-M0,03-G with 0,03% honey and 0,5% amylum of cement weight; (2) Optimum splitting tensile strength achieved by specimen KTB-M0-A with 0,% honey and 0,10% amylum of cement weight;  Keyword:modified polymer concrete;  compressive strength; splitting tensile strength; amylum; honey
Durabilitas Blok Beton Sandwich dengan Isian Styrofoam di Lingkungan Agresif Kenanga, Aditya; Darmawan, M Rizky; Susilorini, Rr.M.I Rretno; Widianto, David
G - SMART Vol 1, No 2 (2017)
Publisher : G - SMART

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Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui durabilitas blok beton sandwich dengan isian styrofoam yang terhadapa lingkungan agresif yang dimodelkan dengan media perendaman. Media yang digunakan dalam penelitian ini adalah air tawar, air laut, air payau, dan air “rob” (air pasang yang masuk ke daratan). Perendaman benda uji dilakukan selama 28 hari. Proses perendaman dilanjutkan dengan pengujian kuat tekan. Hasil penelitian menunjukkan bahwa kuat tekan maksimal adalah sebesar 1,76 MPa pada media perendaman air rob, diikuti 1,67 MPa pada media perendaman air payau, kuat tekan yang lebih rendah diperoleh pada media perendaman air laut dengan sebesar 1,64 MPa dan kuat tekan terendah sebesar 1,36 MPa pada media perendaman air tawar. Kata kunci: durabilitas, blok, beton sandwich, styrofoam, kuat tekan, lingkungan agresif AbstractThe research aimed to observe durability of sandwich concrete block with styrofoam in aggressive environment which was modeled by curing media. The curing media used in this research are plain water, sea water, brakish water, and tidal flooding water. The curing was conducted for 28 days and followed by compressive strength test. The result of this research found that maximum compressive strength was 1,76 MPa with tidal flooding water as curing media, followed by 1,67 MPa with brakish water as curing media, and also 1,64 MPa with sea water as as curing media, and the lowest compressive strength was 1,36 MPa with plain water as as curing media. Keywords: durability, block, sandwich concrete, styrofoam, compressive strength, aggressive environment
Kinerja Susut Pada Blok Beton Sandwich Dengan Isian Styrofoam Ratnawati, Natalia Desi; Permatasari, Irviana Dyah; Susilorini, Rr.M.I Rretno; Widianto, David
G - SMART Vol 1, No 2 (2017)
Publisher : G - SMART

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Abstract

Shringkage is a volume change unrelated to the load, where the volume of concrete is reduceddue to reduced water content due to hydration or evaporation or evaporation. The objective ofthis research is to obtain the shrink parameter on sandwich block with Styrofoam stuffing inthe form of visual, damage, saturated and shrinkage in the medium of marine and freshwatersoak for 28 days and get the graph between time and depreciation. This research uses twoexperimental method that is by way of oven and not dioven in fresh water and marine waterimmersion media, each of which is submerged media in the form of 5 pieces of specimen length37 cm, width 15,5 cm, and thickness 7.5 cm which if in total amounted to 10 concrete blocks,the concrete block is tested in laboratory materials Soegijapranata Unika by using thecontainer as a medium of immersion media and the length of the sorong as a tool length, width,thickness of the block and the scale that has a precision of 0.1 for get the weight of the concretethen if it gets the result will result in the amount of shrinkage. The results obtained from theshrinkage will be concluded whether the sandwich panel with Styrofoam stuffing can be usedas a bearing wall.