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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Syntax Literate: Jurnal Ilmiah Indonesia
Mariana Safitri, Mariana
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Humanities Civil Engineering, Building, Construction & Architecture Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Perbandingan Nilai Kuat Tekan Beton Menggunakan Hammer Test dan Compression Testing Machine terhadap Beton Pasca Bakar Dharmawan, Weka Indra; Oktarina, Devi; Safitri, Mariana
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 22, Nomor 1, JULI 2016
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (646.592 KB) | DOI: 10.14710/mkts.v22i1.12404

Abstract

The change of temperature is quite high, as was the case in the event of a fire, it will have an impact on the concrete structure. Because in the process there will be a cycle of alternately heating and cooling, which would lead to a change in phase of the complex physical and chemical basis. Using hammer test as a comparison of compression testing machine (CTM) in normal conditions the concrete now widely used and has had standardization. The objects to test consist of 60 concrete cubes beam of 15 cm x 15 cm x 15 cm which burned for 3 hours with 3 variants of temperatures. The 20 samples used as a blank test and each 20 samples burnt with temperature 300oC and 600oC. The results showed the increase in the compressive strength at the temperature of 300oC in the amount of 6.68% or 10.91 Kg/cm2, and at the temperature of 600oC has decreased by 1.57% or 2.56 Kg/cm2 on hammer test. While the testing with compression strength of concrete decreased at temperatures of 300oC and 600oC respectively is 15.77% or 51.1 Kg/cm2 and 21.89% or 70.93 Kg/cm2.
Sifat Fisik dan Mekanik Aerated Concrete Dengan Variasi Silica Fume Safitri, Mariana; Rosidawani, Rosidawani; Hanafiah, Hanafiah
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v8i12.14563

Abstract

Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi silica fume terhadap sifat fisik dan mekanik beton aerasi. Beton aerasi merupakan jenis beton ringan dengan pori-pori dan rongga udara tinggi yang dihasilkan melalui penambahan alumunium powder. Silica fume, sebagai pozzolan pengganti semen, diharapkan dapat meningkatkan sifat mekanik beton. Metode eksperimental digunakan untuk membandingkan komposisi aerated concrete dengan variasi silica fume (0%, 10%, dan 15%). Pengujian melibatkan slump flow, setting time, penyerapan air, berat jenis, kuat tekan, dan analisis X-Ray Diffraction (XRD) serta Scanning Electron Microscope (SEM). Hasil menunjukkan bahwa penambahan silica fume mempengaruhi workabilitas, setting time, penyerapan air, dan berat jenis beton. Selain itu, kuat tekan beton meningkat dengan penambahan silica fume, mencapai nilai optimum pada 15%. Analisis XRD menunjukkan komposisi dominan Quartz dan Portlandite, sementara SEM menunjukkan perubahan mikrostruktur dengan variasi silica fume.
Co-Authors Hanafiah Hanafiah, Hanafiah Oktarina, Devi Rosidawani, Rosidawani Weka Indra Dharmawan