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All Journal Portal: Jurnal Teknik Sipil Journal Serambi Engineering (JSE)
Cut Yusnar
Jurusan Teknik Sipil Politeknik Negeri Lhokseumawe
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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INVESTIGASI KEKUATAN BETON SILINDER GEOPOLIMER ABU AMPAS TEBU Cut Yusnar; Syukur Hidayat
Portal: Jurnal Teknik Sipil Vol 9, No 2 (2017)
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v9i2.617

Abstract

The addition of elements such as pozzolan ingredients to concrete mixtures has been proven can increase the value of concrete compressive strength. This study aims to determine the microstructural effect on the replacement of 10% of Portland cement weight with bagasse ash (sugarcane bagasse). Scanning Electromicroscopphy Microscopphy (SEM / EDX) shows the dominant percentage of bagasse ash is Silica element 53% in addition to other elements such as Carbon (C) and Hydrogen (H). The C-S-H unsure bond pattern on concrete mortar shows a Type III bonding pattern at early ages and bonding patterns I and III on mortars that have reached the age of 28 days. Porosity level decreases with increasing age of concrete mortar. With the reduced porosity will increase the density and increase the compressive strength of concrete mortar. This porosity level is lower than that of concrete mortar without the addition of bagasse ash.Key words: Microstructure, silica, concrete mortar, compressive strength, porosity.
Analisis Morfologi Partikel Mikrostruktur Geopolimer Abu Sekam Padi Menggunakan Pembakaran Dengan Alat Furnace Dan Pembakaran Secara Manual Cut Yusnar
Jurnal Serambi Engineering Vol. 9 No. 2 (2024): April 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The morphology of Rice Husk Ash (RHA) geopolymer microstructure particles obtained by using a kiln at a temperature of 700oC produces a grain shape that is different from the RHA material burned by hand. Theshape of the microstructure particles for geopolymer concrete paste determines the strength of the geopolymer range. The research results show that the shape of the granules obtained by firing in a kiln has a crystalline shape Meanwhile, the shape of the particles obtained by manual firing is amorphous. Theresults of compressive strength tests with amorphous particle structures have greater compressive strength than those in crystalline form. This is demonstrated by testing the RHA furnace material and manually using SEM (Scanning Electron Microscopy) and XRD (X-Ray Diffraction) tests, which show that the granules obtained from furnace burning are crystalline and those obtained from manual burning are amorphous. Crystalline particles are more difficult to react with than amorphous particles in geopolymer concrete mixes. The XRD test results show the highest diffraction by the silica element. The chemical content of silica elements in rice husk ash was found to be 94.9%.
Co-Authors Syukur Hidayat