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All Journal Teras Jurnal U Karst Jurnal Teknik Sipil
Cecilia Lauw Giok Swan
Universitas Katolik Parahyangan
Civil Engineering, Building, Construction & Architecture Engineering Environmental Science

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Load Transfer On Bored Pile Foundation Instrumented With Fiber Optic And Concrete Quality Analysis Kevin Martandi Setianto; Cecilia Lauw Giok Swan; Paulus Pramono Rahardjo
U Karst Vol 5, No 2 (2021): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3933.927 KB) | DOI: 10.30737/ukarst.v5i2.1584

Abstract

The problem in the construction method of the bored pile is the contamination of mud or the other contaminant that can cause the modulus of elasticity of concrete to decrease. This research determines the modulus of concrete on a bored pile foundation instrumented with fiber-optic (FO) with a manual calculation based on strain data during loading test, validated with the results of research in the laboratory and numerical analysis. Fiber optic was used to measure the strain along with the pile during the loading test. The bored pile foundation is divided into 12 segments with the same strain characteristics, and then the modulus value is calculated. The result is the modulus value of each segment is different, and the value of the modulus changes along with the increase in strain; the modulus will decrease as the strain increases. This differs from the theory that the modulus has a fixed value approximated by empirical equations. Made a cylindrical concrete sample on both sides, which installed a FO to record the strain during the loading test. The result is true that the modulus is not constant but decreases as the strain increases. It is shown in the result of analysis to fiber-optic measurement data. Created a model in Plaxis2D for validation, and the results are not much different from the manual calculation.
Load Transfer On Bored Pile Foundation Instrumented With Fiber Optic And Concrete Quality Analysis Kevin Martandi Setianto; Cecilia Lauw Giok Swan; Paulus Pramono Rahardjo
U Karst Vol. 5 No. 2 (2021): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v5i2.1584

Abstract

The problem in the construction method of the bored pile is the contamination of mud or the other contaminant that can cause the modulus of elasticity of concrete to decrease. This research determines the modulus of concrete on a bored pile foundation instrumented with fiber-optic (FO) with a manual calculation based on strain data during loading test, validated with the results of research in the laboratory and numerical analysis. Fiber optic was used to measure the strain along with the pile during the loading test. The bored pile foundation is divided into 12 segments with the same strain characteristics, and then the modulus value is calculated. The result is the modulus value of each segment is different, and the value of the modulus changes along with the increase in strain; the modulus will decrease as the strain increases. This differs from the theory that the modulus has a fixed value approximated by empirical equations. Made a cylindrical concrete sample on both sides, which installed a FO to record the strain during the loading test. The result is true that the modulus is not constant but decreases as the strain increases. It is shown in the result of analysis to fiber-optic measurement data. Created a model in Plaxis2D for validation, and the results are not much different from the manual calculation.
Efek Volume Limbah Plastik Acrylonitrile Butadiene Styrene (ABS) Terhadap Properti Mekanis Beton Normal Mega Nospita Matana; Cecilia Lauw Giok Swan
Teras Jurnal : Jurnal Teknik Sipil Vol 16 No 2 (2026): Teras Jurnal (September 2026)
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v16i2.1405

Abstract

Abstrak   Pemanfaatan limbah plastik keras sebagai campuran agregat beton adalah salah satu solusi permasalahan lingkungan akibat terus bertambahnya volume limbah plastik. Penelitan ini memanfaatkan limbah plastik dengan jenis acrylonitrile butadiene styrene (ABS) sebagai subtitusi parsial agregat kasar pada campuran beton normal berdasarkan volume absolut total (15, 30 dan 40%). Penelitian eksperimental dilakukan untuk mengetahui pengaruh persentase plastik ABS terhadap properti mekanis beton normal baik dalam kondisi beton segar maupun beton keras (umur 7, 14 dan 28 hari). Untuk beton segar, properti mekanis yang ditinjau adalah nilai slump dan berat isi. Hasil pengujian menunjukkan bahwa terjadi reduksi seiring dengan peningkatan persentase plastik ABS yang digunakan. Pada umur beton keras, dilakukan pengujian dan analisis pengaruh persentase plastik ABS pada berat isi, kekuatan tekan, kekuatan tarik belah dan kekuatan lentur.  Pada umur beton keras, hasil analisis menunjukkan bahwa berat isi dan kekuatan beton semakin tereduksi.   Kata kunci: beton, plastic ABS, property mekanis beton       Abstract   The use of hard plastic waste as concrete ix aggregate is one of the environmental problems solutions which are caused by increasing of plastic waste volume. This study utilize plastic wastes acrylonitrile butadiene styrene (ABS) as partial replacement for coarse aggregates in concrete mix according to total of absolute volume (15, 30 dan 40%). The experimental study were performed to analyze the effect of ABS plastic percentage to mechanical properties of normal concrete in both of fresh and hardened states (7, 14 and 28-days). For fresh concrete, mechanical properties, which were investigated, workability and density. Test results indicate a reduction in both properties as the p ABS plastic percentage used increases. For hardened concrete, this study investigated the effect of plastic waste on density, compressive, splitting tensile and flexural strength of concrete. It is concluded that density and strength of concrete decreased by increasing the percentage of plastic waste.   Keywords: concrete, ABS plastic, concrete mechanical properties
Efek Volume Limbah Plastik Acrylonitrile Butadiene Styrene (ABS) Terhadap Properti Mekanis Beton Normal Mega Nospita Matana; Cecilia Lauw Giok Swan
Teras Jurnal : Jurnal Teknik Sipil Vol 16 No 2 (2026): Teras Jurnal (September 2026)
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v16i2.1405

Abstract

Abstrak   Pemanfaatan limbah plastik keras sebagai campuran agregat beton adalah salah satu solusi permasalahan lingkungan akibat terus bertambahnya volume limbah plastik. Penelitan ini memanfaatkan limbah plastik dengan jenis acrylonitrile butadiene styrene (ABS) sebagai subtitusi parsial agregat kasar pada campuran beton normal berdasarkan volume absolut total (15, 30 dan 40%). Penelitian eksperimental dilakukan untuk mengetahui pengaruh persentase plastik ABS terhadap properti mekanis beton normal baik dalam kondisi beton segar maupun beton keras (umur 7, 14 dan 28 hari). Untuk beton segar, properti mekanis yang ditinjau adalah nilai slump dan berat isi. Hasil pengujian menunjukkan bahwa terjadi reduksi seiring dengan peningkatan persentase plastik ABS yang digunakan. Pada umur beton keras, dilakukan pengujian dan analisis pengaruh persentase plastik ABS pada berat isi, kekuatan tekan, kekuatan tarik belah dan kekuatan lentur.  Pada umur beton keras, hasil analisis menunjukkan bahwa berat isi dan kekuatan beton semakin tereduksi.   Kata kunci: beton, plastic ABS, property mekanis beton       Abstract   The use of hard plastic waste as concrete ix aggregate is one of the environmental problems solutions which are caused by increasing of plastic waste volume. This study utilize plastic wastes acrylonitrile butadiene styrene (ABS) as partial replacement for coarse aggregates in concrete mix according to total of absolute volume (15, 30 dan 40%). The experimental study were performed to analyze the effect of ABS plastic percentage to mechanical properties of normal concrete in both of fresh and hardened states (7, 14 and 28-days). For fresh concrete, mechanical properties, which were investigated, workability and density. Test results indicate a reduction in both properties as the p ABS plastic percentage used increases. For hardened concrete, this study investigated the effect of plastic waste on density, compressive, splitting tensile and flexural strength of concrete. It is concluded that density and strength of concrete decreased by increasing the percentage of plastic waste.   Keywords: concrete, ABS plastic, concrete mechanical properties
Co-Authors Kevin Martandi Setianto Mega Nospita Matana Paulus Pramono Rahardjo