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Durabilitas Laston Dengan Filler Abu Gambut Yuniarto, Enno; Sentosa, Leo
Jurnal Semesta Teknika Vol 9, No 2 (2006): NOVEMBER 2006
Publisher : Jurnal Semesta Teknika

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Campuran beraspal merupakan campuran yang digunakan untuk membentuk lapis perkerasan lentur jalan raya. Campuran beraspal umumnya terdiri dari agregat, filler dan aspal sebagai bahan pengikat.Â Material yang umum digunakan sebagai filler adalah semen, pasir, kapur dan abu batu, yang persediaannya terbatas serta relatif mahal. Alternatif lain yaitu penggunaan abu gambut yang merupakan limbah industri dari bahan bakar pabrik kertas. Salah satu jenis campuran beraspal adalah Lapis Aspal Beton (Laston). Campuran Laston yang baik adalah yang memiliki stabilitas, fleksibilitas, skid resistance ,kedap air dan durabilitas yang cukup. Untuk mengetahui keandalan dari Laston dengan abu gambut dari segi durabilitasnya, maka dilakukan pengujian durabilitas dengan tes perendaman modifikasi Marshall. Indek keawetan dinyatakan dalam nilai IRS dan Indeks Keawetan Craus dkk. Dari pengujian laboratorium pada campuran Laston dengan filler abu gambut memberikan nilai IRS sebesar 88.31% pada perendaman selam 28 hari dan nilai Indeks Keawetan Pertama Craus dkk ( r) sebesarÂ 6.44%Â serta Indeks Keawetan Kedua Craus dkk (a) sebesar 20 %. Jika dibandingkan syarat nilai IRS minimal dari Bina Marga untuk Laston, yaitu 75%, nilai IRS Laston dengan filler abu gambut memenuhi syarat.

Evaluasi Cepat Struktur Portal Beton Bertulang Terhadap Gempa Muttaqin, Muhammad Akbar; Yuniarto, Enno; Hendri, Andy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Earthquakes from 2004 to 2009 in Indonesia has resulted in many deaths and the collapse of the building. The American Society of Civil Engineers (ASCE) with the Federal Emergency Management Agency (FEMA) has published FEMA 310 as a handbook for seismic evaluation of buildings. FEMA 310 evaluation includes evaluation of phase one, two and three. Evaluation of phase one (tier 1) using a checklist of structural, non-structural, region of low sismicity and also geologic site hazard and foundation. Evaluation of the second phase (tier 2) is a linear analysis for structures such as static equivalence analysis and dynamic. Evaluation of the third stage (tier 3) is non- linear analysis of such a pushover. If the evaluation phase of the assessment does not meet the criteria, then it should proceed to the second phase, as well as for further evaluation. The building is located in the city of Pekanbaru that is reviewed and evaluated up to the second phase. Calculation of seismic shear force have used seismic hazard map of Indonesia has been published in 2010. This is one step to improve the performance of structures to resist earthquakes, it is expected that this will reduce structural damage and avoid loss of life. The results of the evaluation phase one (tier 1) that has been conducted shows that the buildings that were reviewed non- compliant for weak story and soft story. Evaluation of the second phase (tier 2) shows that all the columns in buildings were able to bear the load, while some beam were over strength, however both of building can be declared the buildings are safe against earthquakes (compliant).Keywords : Earthquake, FEMA 310, quick assessment, seismic evaluation

Analisis Respons Struktur Portal Baja Bertingkat Akibat Kandungan Frekuensi Gempa Yang Berbeda Afisha, Elly; Suryanita, Reni; Yuniarto, Enno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Indonesia is one of the countries that located in the quake zone. But not all earthquakes that occur is a devastating earthquake. Some earthquake parameters that affect the level of damage from a building structure are the peak ground acceleration, response spectrum value, earthquake duration, and earthquake frequency content. The earthquake frequency content parameters were considered the most influential on structural damage. The objective of this research is to get the response from the structure of multilevel steel portals such as displacement, inter-story drift, velocity, acceleration, and to analyze the displacement limit based on SNI 1729-2012. The reviewed structure is an open frame steel building model that is into 5 levels, 10 levels, and 15 levels. This study use time history analyses with 9 earthquake recordings of the Kobe earthquake, Mexico earthquake, Nepal earthquake, Chile earthquake, New Zealand earthquake, Sumatera earthquake, Fredericksburg earthquake, Mentawai earthquake, and Northridge earthquake that has been grouped into low-frequency content, medium frequency content, and high-frequency content. The results showed that the structure responses such as displacement, velocity, and acceleration will increase with the increasing number of levels of the building structure. The inter-story drift the allowed level of the structure still qualified based on SN 1729-2012 where the allowed drift in 7 cm and the inter-story drift produced by the structure is still less than 7 cm. An earthquake with low-frequency content has an enormous influence on the structure response in all the level structure.Keywords: response structure, time history, frequency content

Pengaruh Bahan Tambah Bakteri Bacillus Subtilis Terhadap Kuat Tekan Dan Kuat Lentur Beton Di Lingkungan Sulfat Fitrana, Yaniarto; Djauhari, Zulfikar; Yuniarto, Enno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The application of concrete to the sulfate environment potentially cause damage to concrete. The use of bacteria in concrete can be a concrete innovation to recover concrete (Self Healing Concrete) from the problem of concrete cracks. This study was conducted to examine the effect of Bacillus Subtilis bacteria on compressive strength and flexural strength of concrete in the sulfate environment. This research was conducted by adding 25 ml Bacillus Subtilis bacteria with concentration of 105 CFU/ml into a concrete mixture. Test objects were plain concrete beams with a size of 60x15x15 cm and cylinders with a diameter of 15 cm and a height of 30 cm. The variation of test specimens consisted normal concrete soaked in normal water (BNN), bacterial concrete soaked in normal water (BBN) and bacterial concrete soaked in sulfate solution (BBS). Two tests were carried out, namely compressive strength test and flexural strength test. The test result showed that the compressive strength of BBS at the age of 28 and 56 days was 14% and 24% lower then that of BNN. Comparing to BBN, compressive strength of BBS at 28 and 56 days were lower 26% and 34%, respectively. Furthermore, the test result showed that the flexural strength of BBS at the age of 28 and 56 days was 14% and 9% higher than that of BN. Comparing to BBN, flexural strength of BBS at 28 and 56 days were higher 13% and 2%, respectively. The addition of bacteria to the concrete in the sulfate environment increases the flexural strength of the concrete.Keywords: Self Healing Concrete, sulfate environment, Bacillus Subtilis, compressive strength, flexural strength.Â

RESPONS STRUKTUR BANGUNAN BERDASARKAN SPEKTRA GEMPA INDONESIA UNTUK IBUKOTA PROVINSI DI PULAU SUMATERA Jingga, Hendra; Suryanita, Reni; Yuniarto, Enno
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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Sumatera Island is a very active seismic area in Indonesia, which is crossed by the infamousPacific Ring of Fire. The western side of Sumatera Island suffers more from the groundshaking due to its closer distance to the epicenter. Combined with huge coverage of soft soil,building structures built on this island may experience excessive deformation and eventuallycollapse in a brittle way. For high-rise reinforced concrete (RC) building, the impact is evenmore devastating and may endanger its occupants. Due to these facts, this study aims toanalyze the deformation characteristic (story-drift) of high-rise RC building under earthquakeloading in Sumatera Island. Modal response spectrum analysis is performed to compute themaximum story-drift of three RC building models (10 story, 15 story, and 20 story) used in thisstudy. The seismic acceleration response spectrum function is derived from the lastestIndonesia’s Seismic Hazard Map (2010) and SNI 1726-2012. Eight capital cities in SumateraIsland and three soil conditions (soft, medium, and hard soil) are selected to generate 24seismic acceleration response spectrum functions. Combined with three RC building modelvariations, 72 story-drift data are obtained for each X and Y horizontal direction. Based on theanalysis result, taller buildings in soft soil condition are at greater risk to experience excessivedeformation due to seismic loading. Seismic locations in the western side of Sumatera Island isalso observed to exhibit higher seismic hazard compared to central and eastern side ofSumatera Island.Keywords: artificial neural network (ANN), earthquake, modal response spectrum analysis,structural response, Sumatera Island

Durabilitas Laston dengan Filler Abu Gambut Yuniarto, Enno; Sentosa, Leo
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 2, Edisi XXXV, JUNI 2006
Publisher : Department of Civil Engineering, Diponegoro University

Bituminous mixtures to represent mixture used to roadway pavement. The bituminous mixtures generally consist of aggregate, filler and asphalt upon which fastener. Material used occasionally as filler are Portland cement, fine sand, stone ash and lime stone dust. which are its limited supply and also costly relative. The other alternative, usage Peat fly ash from industrial disposal or waste of paper mill fuel. Laston required good basic properties are stability, flexibility, skid and durability. To know the reliability of durability from Laston used peat fly ash as filler by The Marshall Immersion modified durability test. Durable Index expressed by IRS and Durable Index of Craus. From laboratory test Laton mixture with filler of peat fly ash assign value IRS equal to 95.22% at 28 day immersion, First Craus Durable Index (r) value equal to 1.73% and also Second Craus Index (a) equal to 4.22 %. If compared to condition assess minimum IRS from Bina Marga for the Laston, which is 75%, IRS Laston value with Palm Ash filler up to Bina Marga standard value.Keywords: filler, industrial waste, peat fly ash, laston, durabilityPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3945[How to cite: Yuniarto, E. dan Sentosa, L., 2006, DurabilitasÂ Laston dengan Filler Abu Gambut, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 2, pp. 189-197]

KEKUATAN DAN DAKTILITAS KOLOM BETON MUTU TINGGI YANG DIKEKANG DENGAN BAJA MUTU TINGGI (KASUS PEMBEBANAN KONSENTRIK Djauhari, Zulfikar; Yuniarto, Enno
Jurnal Sains dan Teknologi Vol 11, No 1 (2012): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Riau

Tulisan ini memaparkan hasil investigasi perilaku kekuatan dan daktilitas kolom beton mutu tinggi yang dikekang dengan baja spiral atau hoops mutu tinggi, di bawah beban tekan terpusat dan eksentrik. Untuk kasus pembebanan eksentrik, studi menggunakan 18 spesimen kolom pendek berpenampang melingkar dengan diameter 110 mm yang dikekang menggunakan batangan besi spiral. Variabel pengujian meliputi kuat tekan (yield strength), tipe pengekang (hoops), serta jarak dan rasio volumetrik besi pengekang. Efek dari beberapa variabel pengujian terhadap perilaku pembebanan aksial terpusat kolom beton mutu tinggi dipaparkan dan didiskusikan di tulisan ini.Kata Kunci : beton mutu tinggi, baja mutu tinggi, pengekangan

Perbandingan Kapasitas Sambungan Balok -Kolom Konvensional Dan Pracetak Sistem Rigid Joint Precast (RJP) (Studi Kasus Gedung Rumah Susun Sederhana Sewa Pekanbaru) Arrahman, Feri; Djauhari, Zulfikar; Yuniarto, Enno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Precast system is a system which offers quality controlled implementation, they are neat, fast and economical, thus included systems that fiil the criteria for green construction. Precast concrete construction has many advantages than conventional systems. The advantage of this system are, quality assured, fast and massal production, rapid development, environmentally friendly and tidy with good product quality. For buildings precast system have been researched, developed, applied and proven reliability by the Ministry of Public Works and the various national construction industry since 1995, especially in support of the development program of massal simple flat throughout Indonesia. One of the buildings using precast system is building Rusunawa Pekanbaru. This Rusunawa using RJP-type system of precast concrete. Part of the concern is a precast system on beam-column connections. Beam-column relationship is a critical area in the event of earthquake loads. Earthquake load has a complex effect on the structure. In this study has compared the moment capacity between conventional beam-column connections with precast type of RJP. The results are there differences in the precast concrete RJP peak voltage at the connection angle (A), exterior (B) and interior (C) in the amount of 53.85 MPa, 54.31 MPa and 54.31 MPa. RJP moment the total capacity are equal to A = 140.35 kN.m, B = 116.96 kN.m and C = 116.96 kN.m. Peak voltage difference and the connection moment capacity caused by configuration differences longitudinal reinforcement.Keyword : precast, RJP, conventional, confined, connection

Prediksi Respons Struktur Bangunan Berdasarkan Spektra Gempa Indonesia Di Pulau Sumatera Menggunakan Jaringan Saraf Tiruan Jingga, Hendra; Suryanita, Reni; Yuniarto, Enno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Sumatera Island is one of the most active seismic area in Indonesia. The high seismic acvitity combined with mostly soft soil condition turn some location in this island into a devastating shaking area especially for highrise building. If not well designed, highrise reinforced concrete (RC) building may experience excessive deformation and endanger its occupants.Due to these facts, this study aims to predict deformation characteristics of highrise RC building under earthquake loading using artificial neural network (ANN). Prior to ANNanalysis, modal response spectrum analysis is conducted to produce building response data sets. By selecting 8 capital cities and 3 other cities in Sumatera Island as seismic location,1080 data sets are generated for ANN training and 405 data sets for testing. The ANN analysis uses 3 layers: input layer, hidden layer, and output layer. Building geometry, soilcondition, and seismic load are selected as input parameters, while story-drift, velocity, and acceleration are selected as output parameters. After 6000 iterations at training process,average mean-squared errors (MSE) of 3x10-4 and 4x10-4 are achieved for training and testing process, respectively. The calculated R2 is ranging from 83% to 95% which isadequately high for prediction rate. This shows that ANN is a very promising tool to predict story-drift, velocity, and acceleration of highrise RC building under earthquake loading.Keywords: artificial neural network (ANN), Sumatera Island, modal response spectrum analysis, structural response

Durabilitas Laston Dengan Filler Abu Gambut Yuniarto, Enno; Sentosa, Leo
Semesta Teknika Vol 9, No 2 (2006): NOVEMBER 2006
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.v9i2.867

Campuran beraspal merupakan campuran yang digunakan untuk membentuk lapis perkerasan lentur jalan raya. Campuran beraspal umumnya terdiri dari agregat, filler dan aspal sebagai bahan pengikat.Â Material yang umum digunakan sebagai filler adalah semen, pasir, kapur dan abu batu, yang persediaannya terbatas serta relatif mahal. Alternatif lain yaitu penggunaan abu gambut yang merupakan limbah industri dari bahan bakar pabrik kertas. Salah satu jenis campuran beraspal adalah Lapis Aspal Beton (Laston). Campuran Laston yang baik adalah yang memiliki stabilitas, fleksibilitas, skid resistance ,kedap air dan durabilitas yang cukup. Untuk mengetahui keandalan dari Laston dengan abu gambut dari segi durabilitasnya, maka dilakukan pengujian durabilitas dengan tes perendaman modifikasi Marshall. Indek keawetan dinyatakan dalam nilai IRS dan Indeks Keawetan Craus dkk. Dari pengujian laboratorium pada campuran Laston dengan filler abu gambut memberikan nilai IRS sebesar 88.31% pada perendaman selam 28 hari dan nilai Indeks Keawetan Pertama Craus dkk ( r) sebesarÂ 6.44%Â serta Indeks Keawetan Kedua Craus dkk (a) sebesar 20 %. Jika dibandingkan syarat nilai IRS minimal dari Bina Marga untuk Laston, yaitu 75%, nilai IRS Laston dengan filler abu gambut memenuhi syarat.

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