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Gunawan Tanzil
Jurusan Teknik Sipil Fakultas Teknik Universitas Sriwijaya
Civil Engineering, Building, Construction & Architecture Environmental Science

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Pengaruh Sulfat Terhadap Kuat Tekan Beton dengan Variasi Bubuk Kaca Substitusi Sebagian Pasir dengan w/c 0,60 dan 0,65 Fanisa Eki Gradiana Putri; Gunawan Tanzil
Jurnal Teknik Sipil dan Lingkungan Vol 1, No 1 (2013): Jurnal Teknik Sipil dan Lingkungan
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Sriwijaya

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Abstract

In order to minimize the damage of concrete structures due to external influences , especially due to sulfate attack that occured naturally in soil and groundwater where the structure is located, and to utilize glass wastes in big cities, a proportion of sand was replaced by glass powder. Two different mix design is calculated based on ACI method (w/c 0.60 and 0.65 ) , with 0%,5%, 10%, 15% and 20% passed a #8 sieve glass powder replacements investigated. Concrete soaked for 7 , 21 and 28 days with 2 types of water were plain water and a 5% sulfate solution . The test results showed that compared to normal concrete for both mix designs, the slump of 20% glass sand replacement concrete was the smallest than the other. Compressive strength of concrete with glass powder substitution is higher than the design compressive strength, and continues to increase with the addition of glass powder content. At 28 days, the compressive strength of specimens with various amount of glass sand replacement were all higher than that of the design strength when soaked in sulfate solution. Keywords : Compressive strength, glass powder, sulfate
Pengaruh Sulfat Terhadap Kuat Tekan Beton dengan Variasi Bubuk Kaca Substitusi Sebagian Semen dengan w/c 0,60 dan 0,65 Fikkriansyah .; Gunawan Tanzil
Jurnal Teknik Sipil dan Lingkungan Vol 1, No 1 (2013): Jurnal Teknik Sipil dan Lingkungan
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Sriwijaya

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Abstract

Increase of cement price, causing the cost of concrete production more expensive. To overcome this problem is to utilize industrial wastes. The most potential is waste glass, that when the form of very fine powder showed pozzolan properties because it contains SiO2. And to improve the durability of concrete, sulfate-resistant concrete  studied. Cement in concrete is replaced by glass powder with the proportion of 0%, 5%, 10% 15% and 20%. Cylindrical specimens were made with two different mix designs (w/c 0,6 and 0,65) is calculated based on ACI method. Specimens soaked in two types of water, plain water and magnesium sulfate solution for 7, 21, and 28 days. Komala Sari (2011) examined a concrete with glass powder as a cement replacement percentage up to 20% glass powder, obtained the 5% glass cement replacement concrete achieve maximum compressive strength. From the research, obtained found that only the 5% glass cement replacement concrete that reached the design strength. The compressive strength of the 5% glass cement replacement concrete was the maximum compressive strength. While the concrete with 15% and 20% glass replacement has a smaller compressive strength than normal concrete. Keywords : Compressive strength, glass powder, sulfate solution s
Pengaruh Sulfat Terhadap Kuat Tekan Beton Dengan Variasi Bubuk Kaca Substitusi Sebagian Pasir Dengan W/C 0,4 dan 0,5 Nety .; Gunawan Tanzil
Jurnal Teknik Sipil dan Lingkungan Vol 1, No 1 (2013): Jurnal Teknik Sipil dan Lingkungan
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Sriwijaya

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Abstract

The Concrete buildings which located in certain location susceptible to sulfate attack. The sulfate can damage the buildings, one of the alternative that can be used to improve the durability of concrete due to sulfate attack by reducing the porosity, the glass powder as a sample that can be use. The glass powder has a pozolanic character that can fill the empty voids in the concrete. The purpose of this study was to determine the effect of glass powder as fine aggregate replacement in concrete that exposed and not exposed to sulfate attack. In this research, some tests were done to determine the compressive strength by replacing sand with 0%, 5%, 10%, 15% and 20% of glass powder. The cylinder specimen was soaked with plain water and  5% MgSO4 solution with 7, 21 and 28 days, using water-cement ratio 0,4 and 0,5. The  result shows that the smallest percentage reduction in the compressive strength due to sulfate attack was founded in 20% of glass content, for w/c = 0,4 in 7 days was 0,57% and for w/c = 0,5 was 1,45%., The highest compressive strength of concrete that was soaked with plain water and 5% MgSO4 solution was founded in 20% of glass content, for w/c = 0,4 in 28 days was 44,72 MPa and 43,85 MPa and then for w/c = 0,5 was 37,80 MPa and 36,45 MPa. So if the content of glass increase the compressive strength will increase and the percentage reduction in compressive strength due to sulfate attack will decrease.   Keywords: glass powder, compressive strength, sulfate.
Co-Authors Fanisa Eki Gradiana Putri Fikkriansyah . Nety .