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All Journal Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan
Harsusani, Harsusani
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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PENGARUH PENAMBAHAN SERAT BAMBU PADA PEMBUATAN PAVING BLOCK TERHADAP KUAT TEKAN Nur, Marwan; Harsusani, Harsusani; Aida, Nur
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 9, No 1 (2024): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.v9i1.7872

Abstract

Bamboo is widely used for various forms of building construction, such as houses, as roofs, columns and foundations. Apart from that, the remainder of its use will become waste. One of the building materials that is often used is paving blocks as an alternative ground surface cover that can be used for road pavement, parking lots, pedestrians, parks, etc. The aim of this research was to determine the effect of adding bamboo fiber with variation of 1%, 3%, and 5% on the compressive strength of paving blocks. The method used in this research is the experimental method. Primary data consists of material testing results and paving block compressive strength. Research was conducted at the Structures and Materials Laboratory, Departement of Civil and Mining Engineering, Ketapang State Polytechnic. From the results of the compressive strength testing of paving blocks that have been carried out, the highest average value of compressive strength of paving blocks with a variation of 1% is 320.01 kg/cm2 which corresponds to the quality concrete C used for home garage pavement, pedestrian circulation, and parking lot.
Penggunaan Battom Ash sebagai Substitusi Agregat Halus Terhadap Kuat Tekan Beton dengan Mutu K-175 Wahyuni, Dian; Harsusani, Harsusani; Kamil, Firmanilah
Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Vol 12 No 2 (2024): Jurnal Konstruksi dan Infrastruktur Vol 12 No.2 : Oktober 2024
Publisher : Civil Engineering Department, Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jki.v12i2.9844

Abstract

This study was conducted to evaluate the potential of bottom ash as a fine aggregate substitute in K-175 concrete and determine the optimum percentage that produces the best compressive strength. Mining of sand as fine aggregate for concrete has caused environmental damage, so an alternative material that is more environmentally friendly is needed. Bottom ash, a solid waste from coal combustion in PLTU, has physical and chemical characteristics that support its use in concrete mixtures. This study used variations of bottom ash substitution of 5%, 12.5%, and 17.5% of the total weight of fine aggregate. Compressive strength tests were conducted at 7, 14, and 28 days of concrete age. The results showed that 5% bottom ash substitution produced the most optimal concrete compressive strength, equivalent to normal concrete at an estimated age of 28 days at 186.86 kg/cm². Meanwhile, 12.5% and 17.5% substitution showed a significant decrease in compressive strength compared to normal concrete. The physical characteristics of bottom ash, such as higher content weight and coarse texture, contribute positively to mechanical bonding in concrete. However, the high silt content of bottom ash requires further treatment to improve its quality. This research is in line with previous studies supporting the utilization of industrial waste in concrete construction, but provides a new focus on K-175 grade concrete for lightweight construction applications. In conclusion, bottom ash can be used as an alternative fine aggregate in concrete, with an optimal substitution of 5%. The utilization of bottom ash not only supports environmental sustainability, but also offers an innovative solution for industrial waste management in construction. Keyword: bottom ash, fine aggregate, industrial waste.
Pengaruh Penambahan Sabut Kelapa Terhadap Agregat Pada Kuat Tekan Beton K-175 Siregar, Riska Febriana; Harsusani, Harsusani; Kamil, Firmanilah
Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Vol 12 No 2 (2024): Jurnal Konstruksi dan Infrastruktur Vol 12 No.2 : Oktober 2024
Publisher : Civil Engineering Department, Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jki.v12i2.9848

Abstract

The use of organic waste as a substitute material in concrete mixtures is one of the efforts to reduce environmental impacts and optimize the utilization of existing natural resources. Coconut fiber, as one of the abundant agricultural wastes, has the potential to be used as an aggregate substitute in concrete. This study aims to analyze the effect of coconut fiber addition on the compressive strength of K-175 grade concrete. Coconut fiber was used as a partial replacement for coarse aggregate with variations of 0%, 0.3%, 0.5%, and 0.8%. Concrete was tested at 7, 14, and 28 days to measure the compressive strength produced at each test age. The results showed that the control concrete (without coconut fiber) produced the highest compressive strength at all test ages. The addition of coir caused a decrease in compressive strength, especially at 7 days, which was due to the interaction between coir and cement matrix which was not optimal at the initial stage of hydration. However, at 28 days, the concrete with coir addition showed an increase in compressive strength although it was not significant compared to the control concrete. The optimum level of coir that does not significantly reduce the concrete quality is about 0.3%. Despite the reduction in compressive strength, the concrete produced at this level still meets the strength standards required for lightweight concrete applications or concrete with medium strength specifications. This study suggests that coir can be considered as an alternative aggregate replacement material in the production of environmentally friendly concrete, with appropriate proportion adjustments to optimize concrete performance. Keyword: aggregate, coconut fiber, concrete compressive strength, eco-friendly concrete, K-175 concrete.
Co-Authors Dian Wahyuni Kamil, Firmanilah Nur Aida Nur, Marwan Siregar, Riska Febriana