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All Journal Teknika: Jurnal Sains dan Teknologi Jurnal Talenta Sipil
Fikri, Julian
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Superplasticizer and hydrated lime for high-strength concrete Kosim, Kosim; Fikri, Julian
Jurnal Teknika Vol 19, No 1 (2023): Available Online in June 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v19i1.16446

Abstract

According to SNI03-6468-2000, high-strength concrete is concrete with a minimum compressive strength of 41.4 MPa. The high strength concrete is useful in precast and prestressed concrete. This study aimed to find the effect of using superplasticizer and hydrated lime on the compressive strength of high-strength concrete K-500 when reviewed at the age of 3, 7, 14, and 28 days. This study used several percentages of superplasticizer for high-strength concrete mixtures, namely the proportions of 0%, 1%, 2%, and 3%. As for the hydrated lime that was tested, the percentages were 0%, 5%, 15% and 25%. The results of the compressive strength test of K-500 concrete without superplasticizer and hydrated lime at the age of 3, 7, 14 and 28 days respectively were 208 kg/cm2, 347 kg/cm2, 462 kg/cm2, and 525 kg/cm2. This results has met the requirements for compressive strength of K-500. Using of 1% to 3% superplasticizer with 5% of hydrated lime at the age of 28 days, the compressive strength obtained were 698.67 kg/cm2, 668.89 kg/cm2, and 465.48 kg/cm2. The compressive strength of using 1% to 3% of superplasticizer with 15% of hydrated lime at the age of 28 days were 508.89 kg/cm2, 473.33 kg/cm2, and 359.70 kg/cm2. As for the compressive strength of using 1% to 3% superplasticizer with 25% of hydrated lime at the age of 28 days were 320.00 kg/cm2, 300.44 kg/cm2, and 254.22 kg/cm2. From the test results, it can be concluded that the use of 1% admixture superplasticizer and 5% hydrated lime is the most optimal mixture compared to the others, with the compressive strength test result was 698.67 kg/cm2. In addition, the author also found that  the greater percentage of using the hydrated lime in the concrete mixture could reduce the compressive strength of the concrete. 
Pemanfaatan Kombinasi Limbah Fly Ash dan Bottom Ash Dalam Campuran Mortar Untuk Paving Block khairizal, Yuri; Ibrahim, Ibrahim; Fikri, Julian; Wiranata, Didi Yuda; Amanah, Tody; Mahmuda, Mahmuda; Sumiati, Sumiati
Jurnal Talenta Sipil Vol 7, No 1 (2024): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v7i1.495

Abstract

Various alternative solutions to reduce waste continue to be sought and developed. This includes fly ash and bottom ash which are waste products from burning coal, one of which is produced by Steam Power Plants (PLTU). So the increasing need for electricity will also be followed by an increase in the amount of waste. This type of waste is utilized in various fields of science, such as agriculture, industry and quite a lot in the construction sector. As a field that continues to develop along with people's need to live and move, utilization in the construction sector has great potential as a solution to reduce this waste. The use of fly ash and bottom ash in construction material mixtures as a quality enhancer or simply to reduce the use of natural materials continues to be carried out. This research will focus on the utilization of waste at a large percentage on a construction product scale. Substitution in the composition of the mortar mixture which is the initial product shows the effect of improving quality at a relatively low percentage in the variations used in this research. However, the full substitution of this waste as a substitute for natural materials, namely fine aggregate, is still in a fairly good range, especially in the composition of mortar mixtures with relatively low quality targets or in composition ratios with more aggregate material than cement or binder.
Co-Authors Ibrahim Ibrahim khairizal, Yuri Kosim, Kosim Mahmuda Mahmuda, Mahmuda Sumiati Sumiati Tody Amanah Wiranata, Didi Yuda