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Studi Karakteristik Fondasi Pelat Tipis Dengan Pengaku Tiang “+” Pada Tanah Granuler Melalui Uji Eksperimen Dan Analisis Pemodelan Menggunakan Software Abaqus Syarif, Firman; Adi, Agus Darmawan; Saputra, Ashar
JURNAL SAINTIS Vol 17 No 2 (2017)
Publisher : UIR Press

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[EN] The amount of damage that happened in Indonesian road is the impact of high traffic load exceeds the carrying capacity of the pavement. To reduce the problems that occur on the pavement the good systems of pavement are built, various studies conducted to produce a creative innovation in order to evaluate and improve the performance of the pavement system. this study has developed a new system of foundation with pile "+" to make the connection between plate and minipile (joint) becomes better. In this study, three models of foundation will be tested by loading test (following ASTM D 114 381 and ASTM D 3689 Pile Under static axial compressive load) to observe and analyze the behavior of the foundation model by loading centric and eccentric. In addition to laboratory tests this research also modeling analysis with Abaqus software to observe and analyze the behavior of the foundation model in terms of deformation and settlement. The results showed the distances between pile and pile provides a significant contribution in reducing the settlement in the foundation when given a maximum load of 20 kN, where is the foundation 1 had short distance between the other foundation the deformation and settlement is the smallest. The length of pile also give significant contribution to reduce the settlement like in foundation 3 that have 20 cm length of the pile have settlement and deformatioan smaller than the foundation 2 that have 10 cm length of the pile

Pemanfaatan Limbah Sayur Sebagai Agen Dalam Pembuatan Beton Pulih Mandiri: Utilization of Vegetable Waste as an Agent in Self Healing Concrete Harmiyati; Syarif, Firman; Mildawati, Roza; Hasyim, Nanda; Iswanto
JURNAL SAINTIS Vol. 23 No. 02 (2023)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2023.vol23(02).11477

[ID] Beton merupakan bahan kontruksi yang terdiri dari campuran material seperti semen, agregat dan air serta bahan tambahan lainnya (additive). Saat ini penggunaan beton semakain meningkat karena beton merupakan bahan kontruksi yang memiliki beberapa kelebihan, seperti mudah dalam proses pengerjaannya dan harga material penyusunnya relatif murah serta mudah didapatkan. Tujuan penelitian ini untuk mengetahui perubahan pada fisik beton menggunakan campuran ekstrak limbah sayuran dan menganalisa pengaruh faktor nilai slump 10-30 terhadap nilai kuat tekan beton pada mutu beton self healing dengan metode yang digunakan untuk menghitung campuran beton (Mix Design) berdasarkan SNI 03-2834-2000. Hasil nilai slump pada penelitian self healing concrete dengan nilai slump 10-30 mm pada beton varian ekstrak limbah sayuran 0% dan 3% memenuhi standar yaitu 20mm dan 30mm. Sedangkan pada varian 5%, 7% dan 9% tidak memenuhi standar yaitu 140mm, 220mm dan 200mm. Hasil kuat tekan beton pada perendaman umur 28 hari pada pengadukan pertama dengan varian 0%, 3%, 5%, 7% dan 9% mengalami penurunan berturut-turut dari 37,40 Mpa, 28,76 Mpa, 25,01 Mpa, 20,30 Mpa, dan 20,14 Mpa. Untuk pengadukan kedua pada varian 0%, 3% dan 5% mengalami penurunan dari varian 0% yaitu 37,40 Mpa, 29,15 Mpa dan 22,15 Mpa, sedangkan varian 7% mengalami kenaikan yaitu 23,26 Mpa dan varian 9% mengalami penurunan yaitu 18,79 Mpa. Penglihatan secara visual pada beton yang diretakkan pada varian 3% dan 5% mengalami pemulihan di hari ke 14 dan hari ke 21, tetapi tidak dapat memulihkan retakan sepenuhnya pada beton. Sedangkan pada varian 7% dan 9% dapat memulihkan di hari ke 14 dan hari ke 10 hampir pulih sepenuhnya. Kata Kunci: Beton, Self Healing Concrete, Ekstrak Limbah Sayuran, Kuat Tekan, Nilai Slump. [EN] Concrete is a construction material consisting of a mixture of materials such as cement, aggregate and water as well as other additives. Currently the use of concrete is increasing because concrete is a construction material that has several advantages, such as being easy to process and the price of the material being made is relatively cheap and easy to obtain. The purpose of this study is to determine changes in the physical concrete and analyze the effect of the slump value of 10-30 on the value of the compressive strength of concrete on the quality of self-healing concrete with the method used to calculate the concrete mix (Mix Design) based on SNI 03-2834- 2000. The results of the slump value in the self-healing concrete study with a slump value of 10-30 mm on the 0% and 3% vegetable waste extract variant concrete met the standards, namely 20mm and 30mm. While the 5%, 7% and 9% variants do not meet the standards, namely 140mm, 220mm and 200mm. The results of the compressive strength of concrete at 28 days of immersion in the first mixing with variants of 0%, 3%, 5%, 7% and 9% decreased from 37,40 Mpa, 28,76 Mpa, 25,01 Mpa, 20,30 Mpa and 20,14 Mpa. For the second mixing the 0%, 3% and 5% variants experienced a decrease from the 0% variant, namely 37,40 Mpa, 29,15 Mpa and 22,15 Mpa, while the 7% variant experienced an increase of 23,26 Mpa and variant 9% experienced a decrease of 18,79 Mpa. Visually the cracked concrete in the 3% and 5% variants recoveredon day 14 and day 21, but could not fully restore the cracks in the concrete. Whilethe 7% and 9% variants can recover on day 14 and day 10 almost fully recovered. Keywords: Concrete, Self Healing Concrete, Vegetable Waste Extract, Compressive Strength, slump value.

Studi Karakteristik Fondasi Pelat Tipis Dengan Pengaku Tiang “+” Pada Tanah Granuler Melalui Uji Eksperimen Dan Analisis Pemodelan Menggunakan Software Abaqus: Study of Characteristics of Thin Plate Foundation with Stiffener "+" in Granular Soil through Experimental Test and Analysis Modeling Using Abaqus Software Syarif, Firman; Adi, Agus Darmawan; Saputra, Ashar
JURNAL SAINTIS Vol. 17 No. 2 (2017)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1271.702 KB)

[EN] The amount of damage that happened in Indonesian road is the impact of high traffic load exceeds the carrying capacity of the pavement. To reduce the problems that occur on the pavement the good systems of pavement are built, various studies conducted to produce a creative innovation in order to evaluate and improve the performance of the pavement system. this study has developed a new system of foundation with pile "+" to make the connection between plate and minipile (joint) becomes better. In this study, three models of foundation will be tested by loading test (following ASTM D 114 381 and ASTM D 3689 Pile Under static axial compressive load) to observe and analyze the behavior of the foundation model by loading centric and eccentric. In addition to laboratory tests this research also modeling analysis with Abaqus software to observe and analyze the behavior of the foundation model in terms of deformation and settlement. The results showed the distances between pile and pile provides a significant contribution in reducing the settlement in the foundation when given a maximum load of 20 kN, where is the foundation 1 had short distance between the other foundation the deformation and settlement is the smallest. The length of pile also give significant contribution to reduce the settlement like in foundation 3 that have 20 cm length of the pile have settlement and deformatioan smaller than the foundation 2 that have 10 cm length of the pile

Analisis Struktur Kolom Pendek Dengan Pendekatan Probabilitas Menggunakan Kombinasi Pembebanan Statik dan Dinamik: Short Column Structure Analysis with Probability Approach Using Combination Loading Static and Dynamic Sahril, Madian; Kurniawan, Mahadi; Sapitri; Syarif, Firman
JURNAL SAINTIS Vol. 22 No. 02 (2022)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2022.vol22(02).9392

[ID] Salah satu gedung perkuliahan dan auditorium 3 lantai di Pekanbaru mempunyai struktur bangunan yang cukup unik, dimana kolom dasar atau basemen memilik tinggi yang lebih pendek dari diatasnya. Kolom ini disebut dengan kolom pendek, dimana dengan struktur seperti itu dapat menimbulkan resiko kegagalan struktur pada kolom pendek tersebut. Dengan struktur kolom pendek tersebut besar kemungkinan menimbulkan resiko terjadi guling pada struktur kolom. Sehingga, penelitian ini bertujuan untuk mengetahui besarnya probabilitas kegagalan serta keandalan struktur kolom pendek tersebut.Pada penelitian ini probabilitas kegagalan bangunan dihitung menggunakan metode distribusi normal (Gaussian). Perhitungan distribusi normal menggunakan gaya aksial kolom pendek sebagai variabel untuk menghitung probabilitas. Gaya aksial ini didapatkan dari kombinasi pembebanan sesuai dengan SNI 1926-2019 dan dihitung dengan bantuan software ETABS 2016. Hasil dari probabilitas dihitung berdasarkan variasi beban dari 20 ton sampai 220 ton dengan interval 40. Hasil perhitungan distribusi normal didapatkan nilai probabilitas masing-masing variasi beban ialah 20 ton sebesar 13.6%, beban 60 ton sebesar 27.4%, beban 100 ton sebesar 50%, beban 140 ton sebesar 69.1%, beban 180 ton sebesar 86.4%, dan beban 220 ton sebesar 95.5%. Adapaun nilai keandalan masing-masing variasi beban ialah 20 ton 86.4%, beban 60 ton 72.6%, beban 100 ton 50%, beban 140 ton 30.9%, beban 180 ton 30.9%, beban 220 ton 4.5%. Berdasarkan batas risiko gempa 10-2 didapatkan hasil sebesar ≤ 65.72 ton, beban yang digunakan sebagai perencanaan ialah beban ≤ 60 ton dengan probabilitas keruntuhan sebesar 27,4% dan keandalan 72,6%. [EN] One of the lecture buildings and a 3-story auditorium in Pekanbaru has a quite unique building structure, where the base column or basement has a shorter height than above. This column is called a short column, where with such a structure there can be a risk of structural failure in the short column. With such a short column structure, it is likely that there will be a risk of overturning in the column structure. Thus, this study aims to determine the probability of failure and the reliability of the short column structure. In this study the probability of building failure is calculated using the normal distribution method (Gaussian). The calculation of the normal distribution uses the short column axial force as a variable to calculate the probability. This axial force is obtained from a combination of loading in accordance with SNI 1926-2019 and calculated with the help of the ETABS 2016 software. The results of the probability are calculated based on load variations from 20 tons to 220 tons with intervals of 40. The results of the normal distribution calculation show that the probability value of each load variation is 20 tons by 13.6%, 60 tons at 27.4%, 100 tons at 50%, 140 tons at 69.1%, 180 tons at 86.4%, and 220 tons at load. tons of 95.5%. The reliability values for each load variation are 20 tons 86.4%, 60 tons 72.6% load, 50 tons load 50 percent, 140 tons load 30.9%, 180 tons load 30.9%, load 220 tons 4.5%. Based on the 10-2 earthquake risk limit, the result is 65.72 tons, the load used as a design is a load of 60 tons with a probability of collapse of 27.4% and reliability of 72.6%.

Optimization of Accelerometer Sensor Location In Arch Bridge Monitoring System Using The Sensor Elimination Using Capital Assurance Criterion (SEAMAC) Method Ritonga, Qonita; Kurniawan, Mahadi; Syarif, Firman; Rachmat Setiawan, Panji; Ahmadi , Heri; Raveena Putri, Citra; Oktavia, Ferly
JURNAL SAINTIS Vol. 25 No. 01 (2025)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2025.vol25(01).18997

In developing countries such as Indonesia, various fields of construction are currently being actively developed, especially bridge construction. Damage to the bridge structure itself requires very large repair costs. Currently, a monitoring system is being introduced to assess the condition of structures against dynamic loads, namely SHMS (Structural Health Monitoring System). The research aims to determine Finite Element Modeling, the optimal location, and several accelerometer sensors. To determine the condition of the arch bridge structure, it is necessary to detect damage through the results of the structural response recorded via the accelerometer sensor. In identifying the optimum number and location of sensors, the method used in this research is SEAMAC (Sensor Elimination Using Modal Assurance Criterion). Where this method is an algorithm method that performs an elimination on the sensor. The optimal placement of accelerometer sensors is determined using the Sensor Elimination Using Modal Assurance Criterion (SEAMAC) method, focusing on the floor plate and the bridge arch frame. Proper sensor placement is crucial as it yields important location data essential for identifying the modal characteristics of the bridge structure. In total, 16 accelerometer sensor locations were identified, with 8 sensors designated for both the floor plate and the arch frame.

Pengaruh Penambahan Admixture Adhesive Manufacturer 78 Terhadap Kuat Tekan Beton Dengan Metode Self Healing Concrete: The Effect of Additional Admixture Adhesive Manufacture 78 On The Concrete Compressive Strength Using the Self-Healing Concrete Method Hasyim, Nanda; Syarif, Firman; Kurniawan, Mahadi; Anggrena, Vella
JURNAL SAINTIS Vol. 23 No. 01 (2023)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2023.vol23(01).25239

[IN] Penelitian ini menggunakan metode Self Healing Concrete yang dimana beton diharapkan mampu memperbaiki dirinya sendiri dari kerusakan retakan dengan memanfaatkan bakteri yang didapat dari ekstrak limbah sayuran. Untuk mengetahui peningkatan kekuatan beton setelah dicampur dengan bahan tambah limbah tomat dan Mastersure1007 additive dengan metode self healing concrete dengan variasi limbah sayuran 3%, dan 0,8% Mastersure 1007 dan Mengetahui pengaruh penambahan ekstrak limbah sayuran dan Mastersure 1007 pada beton dengan metode self healing concrete terhadap kuat tekan beton Penelitian ini bersifat eksperimen (reserch) yang dilakukan dilaboratorium dengan mengacu pada ISO 140440 dengan benda uji berbentuk silinder sebanyak 27 sampel. Dan akan dilakukan uji tekan. Hasil dari penelitian ini, kuat tekan beton tanpa diretakkan variasi 1% adhesive manufacturer 78 dan 3%, 5%, 7%, 9% limbah sayuran secara berturut-turut adalah 44,59 Mpa, 42,28 Mpa, 42,71 Mpa, 49,85 Mpa, 41,25 Mpa, sedangkan kuat tekan beton diretakkan variasi 3%, 5%, 7%, 9% secara berturut-turut adalah 36,85 Mpa, 38,02 Mpa, 42,16 Mpa, 44,68 Mpa. Nilai slump pada beton campuran 1% adhesive manufacturer 78 memiliki nilai 43 mm, pada beton variasi 3%, 5%, 7%, 9% secara berturut-turut adalah 44,33 mm, 45,66 mm, 48,33 mm, 53,66 mm, sedangkan beton diretakkan memiliki nilai slump variasi 3%, 5%, 7%, 9% secara berturut-turut adalah 48,66 mm, 47 mm, 44,33 mm, 42,66 mm. Pemulihan retakan pada beton yang dilihat secara visual dengan perawatan selama 28 hari, dapat menutup retakan yang berukuran sehelai rambut pada beton. [EN] This study uses the Self Healing Concrete method where the concrete is expected to be able to repair itself from crack damage by utilizing bacteria obtained from vegetable waste extracts. To determine the increase in the strength of concrete after being mixed with tomato waste and adhesive manufacturer 78 (AM78) additive with a self-healing concrete method with variations of vegetable waste 3%, 5%, 7%, 9% and 1% adhesive manufacturer 78 and to know the effect of adding vegetable waste extract and Adhesive Manufacturer (AM78) on concrete with self-healing concrete method for the recovery of cracks that occur in concrete. This research is experimental (reserch) conducted in the laboratory with reference to SNI 03-2834-2000 with a cube-shaped test object of 27 samples. The treatment period is 28 days and a pressure test will be carried out. Crack recovery in concrete can only be seen visually by taking pictures. The results of this study, the compressive strength of the uncracked concrete was 1% adhesive manufacturer 78 and 3%, 5%, 7%, 9% vegetable waste respectively 44.59 Mpa, 42.28 Mpa, 42.71 Mpa, 49.85 Mpa, 41.25 Mpa, while the compressive strength of cracked concrete with variations of 3%, 5%, 7%, 9% respectively were 36.85 Mpa, 38.02 Mpa, 42.16 Mpa, 44.68 MPa. The slump value in the 1% adhesive manufacturer 78 mixed concrete has a value of 43 mm, the variation of 3%, 5%, 7%, 9% concrete is 44.33 mm, 45.66 mm, 48.33 mm, 53 respectively. .66 mm, while the cracked concrete has slump values of variations of 3%, 5%, 7%, 9% respectively are 48.66 mm, 47 mm, 44.33 mm, 42.66 mm. The visual restoration of cracks in concrete with 28 days of treatment can close hair-sized cracks in concrete.

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