Muhammad Shalahuddin
Fakultas Teknik Universitas Riau – Pekanbaru,

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KAJIAN NILAI BANDING DAYA DUKUNG TIANG PANCANG DARI DATA UJI CPT, SPT, PDA, LOG BOR DAN PILE DRIVING FORMULA DI LAHAN GAMBUT PEKANBARU Shalahuddin, Muhammad
Proceedings ACES (Annual Civil Engineering Seminar) Vol 1 (2015): Annual Civil Engineering Seminar (ACES)
Publisher : Proceedings ACES (Annual Civil Engineering Seminar)

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Abstract

Perencanaan dan pelaksanaan suatu pondasi tiang pancang pada lahan gambut untuk bangunandengan beban yang lebih besar memerlukan data tanah seperti data CPT, SPT, PDA, Log bordan Pile driving formula atau data yang lainnya. Data-data ini dengan formulanyamenghasilkan nilai daya dukung yang berbeda-beda, maka diperlukan evaluasi untukmembandingkan nilai daya dukung ijin (Qall) yang dihasilkan. Membandingkan nilai dayadukung ijin tiang pancang (Qall), dari data daya dukung ujung tiang (Qp) dan daya dukunggesekan kulit tiang (Qs) pada lokasi pengujian Pasar Cik Puan Pekanbaru. Daya dukung ijinrata-rata dari uji CPT 36,27 ton, dari uji SPT 33, 29 ton, dari uji PDA 33,15 ton, dari uji logbor 46,3 ton dan dari uji pile driving formula dengan data kalendring 46,5 ton. Hal inimenunjukkan bahwa nilai daya dukung ijin rata-rata dari uji CPT, SPT, PDA, log bor dan piledriving formula variatif dan tidak dapat menjadi data cross-check. Nilai daya dukung ijin tiangpancang dapat di-cross check dari data CPT, SPT dan PDA atau dari data Kalendering danLog Bor karena perbedaan nilai daya dukung ijinnya tidak signifikan.Kata kunci: CPT, SPT, PDA, Log bor, Pile driving formula, Daya Dukung, Tiang Pancang.
STUDI PERBANDINGAN KUAT TEKAN BETON DENGAN AGREGAT KASAR MENGGUNAKAN METODE SNI DAN METODE MAXIMUM DENSITY Shalahuddin, Muhammad
Jurnal Teknik Sipil Vol 13, No 1 (2014)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3669.512 KB) | DOI: 10.24002/jts.v13i1.593

Abstract

Abstract : Variations aggregate gradation in the mixed concrete greatly affect the characteristicsof the concrete. Concrete with dense and continuous gradation is expected to reduce the levels ofair and increases the unit weight of concrete and add to the strength of concrete.Concrete mixturewas planned SNI method with 25 MPa compressive strength with cement and water factorvariation and 15 sample units. To compare the methods of concrete mixtures with the maximumdensity with variation of water cement factor and sample cube 15 units.Compressive strength ofmaximum density method 26 Mpa and SNI method 23,8 Mpa. The compressive strengthmaksimum density method is higher 9.24 % than SNI method, it is also supported by the results ofconcrete weight 8117 kg at maximum density method and 8068 kg at SNI method. Slump withmaximum density method and SNI method shows the same value, then the level of work abilityis also the same.Keywords: Maximum Density, SNI, compressive strength of Concrete.
Eksperimental Penambahan Graphene Sebagai Zat Aditif Pada Campuran Asphalt Concrete Binder Course (AC-BC) Novia, Ali; Shalahuddin, Muhammad; Alwinda, Yosi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The type of pavement commonly used in Indonesia is flexible pavement that uses asphalt as its binding material. It is very important to maintain the characteristic of asphalt that functions as the aggregate adhesive in a mixture of asphalt concrete (laston). One way of maintaining or improving the characteristics of the laston is by using graphene as an additive. This study was aimed to examine and analyze the effect of adding graphene as an additive and to find out the most effective level of graphene addition in the asphalt mixture to the Marshall characteristics of the AC–BC laston mixture. This study combined the addition of graphene as an additive of 3.5%, 4%, and 4.5% of the weight of asphalt. The test results showed that the stability value of Marshall characteristics at optimum bitumen content conditions is increased. The highest stability value is found in the addition of 4.5% of graphene which is 1500 kg. The most effective level of graphene addition in the asphalt mixture against Marshall characteristics is by adding 4.5% graphene. The addition of 4.5% of graphene has the highest stability value with a difference of 200 kg or 14.81%, while the value of flow is 4,5 mm, VIM is 3.7%, VFA is 76%, VMA is 14,8%, and MQ is 350 kg/mm, all these values fulfill Bina Marga specifications 2010 revision 3, except the flow values. Keywords: Graphene, Marshall characteristics, AC–BC, Laston
Pemanfaatan Limbah Beton K 250 Sebagai Substitusi Agregat Kasar Pada Campuran Laston Lapis Antara (AC-BC) Ananda, Rizki Fajri; Shalahuddin, Muhammad; Yusa, Muhamad
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Pavement construction requires aggregate which is non renewable material. Concrete waste such as from cubic test might be recyded. This study investigated marshall characteristic of Asphalt concretebinder course (AC-BC) which used of concrete waste as coarse aggregate substitute. Concrete waste was mixed with fresh aggregate at ratio of 100:0, 75:25, 50:50, 25:75 and 0:100 Asphalt contentvariation are 5%, 5.5%, 6%, 6.5% and 7%. The optimum aggregate contents for each variation are 6.08%, 5.83%, 5.87%, 5.10%, 5.55% respectively. The result show that all variation fulfilled the specification The 75:25 variation is recommended as mixture ratio with high stability value of 1445 Kg, Flow 3.40 mm, VMA 15.30%, VFA 77.50%, VIM 3.40%, MQ 440 Kg/mm and also asphalt content is affordable with 5.87% of optimum asphalt content.Keywords: AC-BC, Concrete Waste, Coarse Agregate
Pengaruh Penambahan Zat Aditif Graphene Terhadap Karakteristik Lapis Tipis Aspal Pasir (Latasir) A Putra, Rahmat Ade; Shalahuddin, Muhammad; Alwinda, Yosi; Amri, Amun
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Latasir or a thin layer of asphalt sand is a pavement surface covering consisting of fine aggregates or sand or a mixture of both hard and asphalt mixed, stretched and compacted under certain conditions. Itis often used on the streets as light as local roads or road environment, in order to restrain the rate of water so as not to enter into pores in it. One of the efforts made to improve the quality of asphalt pavementby modifying the mixture material with the addition of certain additives. Graphene is thought to be able to become another asphalt addictive. Several previous studies used Grpahene in various reinforcementstructures. The purpose of this study was to determine the value of Marshall characteristics in the mixtureof Latasir A using graphene addictive. Variation made in this study were 0% (without mixture), 2%, 2.5%, and 3% for the presentation value of asphalt density as a comparison of the value of stability, flow, VMA, VIM, VFA and MQ. The results of this study indicate that the addition of graphene as an addictive to the asphalt mixture tends to increase the value of stability, the value of melt (flow) so that it becomesmore elastic because it is above the specification limit, and not too much increase in the value of the VIM, VMA, VFA, and Marshall Quotient (MQ) value. For the best Marshall Characteristics, the addition ofgraphene is 3% and the optimum asphalt content (KAO) is 8,50% with a stability value of 580 kg, flow value of 4.10%, VIM 4.50%, VFA 79.00%, VMA 22.30% and MQ 140.00 Kg / mm.Keywords: graphene, additives, Latasir, Marshall Characteristics
Pengaruh Konsentrasi Dan Rasio Berat Graphene Nanosheets (GNSS) Terhadap Karakteristik Hot Rolled Sheet (HRS) Bahri, Ahmad Syaiful; Amri, Amun; Shalahuddin, Muhammad
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Hot rolled sheet (HRS) characteristics can be improved by adding additives in the asphalt. This study aims to analyze and determine the effects of concentration and weight ratio of graphene nanosheets (GNSs) additive on the characteristics of HRS. The research was carried out in several stages, starting from the preparation of graphite powder from 2B pencils, preparation of 60/70 penetration asphalt and aggregates, making GNSs solution using the turbulance assisted shear exfoliation (TASE) method and continued with the manufacture of HRS with variations in GNSs concentrations of 10 mg/ml, 20 mg/ml and GNSs weight ratios of 0%, 5%, 10%, 15%. The results showed that the concentration and weight ratio of GNSS could affect the stability value, flow and marshall quotient (MQ) of the HRS. The best results were obtained at a concentration of 20 mg/ml and a weight ratio of 15% GNSs, with a stability value of 1541.19 kg, flow of 4.13 mm and MQ of 391.74 kg/mm.Keywords : Asphalt, Graphene nanosheets (GNSs), Hot rolled sheet (HRS)