Garuda - Garba Rujukan Digital

Experimental Investigation on the Effect of Web Opening Dimension on the Behavior of R/C Hybrid Deep T-Beam Subjected to Pure Torsion Lisantono, Ade; Besari, Mohamad Sahari; Suhud, Ridwan; Soemardi, Biemo W
Jurnal Teknik Sipil Vol 11, No 1 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.159 KB)

Abstract. An experimental study was conducted to investigate the effect of web opening dimension on the behavior of reinforced concrete hybrid deep T-beam subjected to pure torsion. Four reinforced concrete hybrid deep T-beams were tested under pure torsion, where the three beams with different dimension of circular web opening and the other beam without opening as a reference beam. The testing program and experimental results are presented. The results show that dimension of circular web opening with diameter more than 100 mm significantly reduces the cracking and ultimate torque. It is also shown that the angle of crack inclination with respect to the longitudinal axis of the beam increases with the increase of web opening dimension. Abstrak. Suatu studi eksperimental telah dilakukan untuk meneliti pengaruh dimensi bukaan pada perilaku balok tinggi-T hybrid beton bertulang yang dikenai torsi murni. Empat balok diuji dibawah beban torsi murni, dimana tiga balok mempunyai dimensi bukaan yang berbeda dan satu balok tanpa bukaan sebagai tolok ukur. Program pengujian dan hasil-hasilnya disajikan dalam makalah ini. Hasil pengujian memperlihatkan bahwa dimensi bukaan dengan diameter lebih dari 100 mm secara signifikan mengurangi kekuatan torsi pada saat retak dan saat maksimum. Hasil eksperimental juga menunjukkan bahwa sudut kemiringan retak terhadap sumbu memanjang balok meningkat dengan meningkatnya dimensi bukaan.

Cold-Formed Steel-Concrete Beams Lisantono, Ade; Wigroho, Haryanto Yoso; Sari, Meita Ratna
Jurnal Teknik Sipil Vol 19, No 2 (2012)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.357 KB)

Abstract. Light weight material usually be chosen as a material for earthquake resistant building in order to reduce inertia force of the building. In comparison with others section, a cold-formed steel section is a lighter section and makes this section is categorized as a light weight material. During reconstruction of Yogyakarta earthquake of 27th May 2006 some housings were constructed by using cold-formed steel sections. However, investigation on the utility of cold-formed steel section for structural elements was very limited. Two experimental programs of coldformed steel-concrete beams were carried out. One of the experiment used normal weight concrete and the other used light weight concrete. In the experimental programs, the normal weight concrete had the compressive strength of 23.53 MPa, while the light weight concrete had the compressive strength of 12.91 MPa. This paper tried to analyze and compare those experimental programs. The comparison showed that the cold-formed steel beam with normal weight concrete gave higher load capacity than the cold-formed steel beam with light weight concrete. However, if the comparison was taken with respect to the ratio of compressive strength to density, the cold-formed steel beam with light weight concrete might give more promising bending elements for earthquake resistant building.Abstrak. Bahan yang ringan biasanya dipilih sebagai bahan untuk bangunan tahan gempa, dengan tujuan untuk mengurangi gaya inersia akibat gempa pada bangunan tersebut. Dibandingkan dengan profil lainnya, profil baja dengan bentukan-dingin merupakan profil yang lebih ringan sehingga membuat profil ini dapat dikategorikan sebagai bahan yang ringan. Pada rekonstruksi rumah-rumah akibat gempa Yogyakarta tanggal 27 Mei 2006, beberapa diantaranya dibuat dengan menggunakan profil yang ringan yaitu profil baja bentukan-dingin sebagai elemen strukturnya. Meski banyak digunakan sebagai elemen struktur, tetapi penelitian elemen struktur yang menggunakan profil baja bentukan-dingin sangatlah terbatas. Dua program eksperimental balok yang menggunakan profil baja bentukan-dingin dengan pengisi beton telah dilakukan. Yang satu menggunakan pengisi beton normal dan yang lainnya menggunakan pengisi beton ringan. Pada program eksperimental tersebut, beton normal yang dipakai mempunyai kuat tekan 23,53 MPa, sedangkan beton ringan mempunyai kuat tekan 12,91 MPa. Makalah ini mencoba untuk menganalisis serta membandingkan kedua program eksperimental tersebut. Hasil perbandingan menunjukkan bahwa balok profil baja bentukan-dingin yang berpengisi beton normal memberikan kapasitas beban yang lebih tinggi dari pada balok profil baja bentukan-dingin yang berpengisi beton ringan. Akan tetapi apabila perbandingan didasarkan pada rasio kuat tekan terhadap berat jenisnya, maka balok profil baja bentukan-dingin dengan pengisi beton ringan merupakan elemen lentur yangÂ lebih menjanjikan untuk digunakan sebagai elemen struktur pada bangunan tahan gempa.

COMPRESSIVE AND SHEAR BOND STRENGTH OF OIL WELL CEMENT WITH CALCIUM CARBONATE AND SILICA FUME Prasetyo, Arnoldus Meidio Adi; Lisantono, Ade
Jurnal Teknik Sipil Vol 13, No 4 (2016)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

One of the critical factors of cementing process in oil drilling of off-shore-project is designing the cement slurry. For this reason, the slurry properties which have been classified by American Petroleum Institute (API) should be changed so it will match with the requirement of reservoir condition. Changing the slurry properties can be done by adding the additive material into the cement slurry such as Calcium Carbonate and Silica Fume. The research objective is to study the effect of calcium carbonate and silica fume to the compressive and shear bond strength of oil well cement. Fourty five cylinder specimens with the size of (75 x 150) mm were made for compressive strength testing and fourty five cylinder specimens with the size of (25.4 x 50.8) mm were made for shear bond strength testing. Five variants of the specimen were made in this study. The variant were cement slurry with (0% Calcium Carbonate + 0 % Silica Fume) as a reference specimen; (5% Calcium Carbonate + 5 % Silica Fume); (10% Calcium Carbonate + 10 % Silica Fume); (15% Calcium Carbonate + 15 % Silica Fume); (20% Calcium Carbonate + 20 % Silica Fume). The oil well cement specimens were tested in 7, 14, and 28 days. The experimental results show that the compressive strength of oil well cement will decrease when it is added with calcium carbonate and silica fume. The shear bond strength of the oil well cement increases for the specimen with 5 % Calcium Carbonate + 5 % Silica Fume. However, the shear bond strength will decrease when content of the Calcium Carbonate + Silica Fume more than 5 %. Based on the result of this research, the optimum amount of calcium carbonate and silica fume that can be use is 5%, because with 5% of calcium carbonate and 5% of silica fume, the reducing of compressive strength is the smallest and the shear bond strength is increased compare to the others specimen with 10%, 15%, and 20% calcium carbonate and silica fume.

The Mechanics Properties of Self-Compacting Concrete Using Red-Tile Waste as Substitution of Fine Aggregates Octobenita, Crezensia Alfiora Deadema Dias; Lisantono, Ade
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

This paper presents the experimental program about the mechanics properties of Self-Compacting Concrete (SCC) using red-tile waste as substitution of fine aggregates. The proportion of red-tile waste substitution was 10 %; 20 %; 30; 40 %; and 50 % of fine aggregates by weight. Viscocrete-10 was used to maintain the workability and flowability of SCC. 72 cylinder specimens with the size of (150Ã—300) mm and 18 beam specimens with the size of (100Ã—100Ã—500) mm were cast and tested in this study. The mechanics properties of SCC that were studied in this research were compressive strength, modulus of elasticity, and modulus of rupture. The compressive strength of SCC was tested at age 7; 14; and 28 days. While the modulus of elasticity and modulus of rupture of SCC were tested only at age 28 days. The result shows that the maximum compressive strength of SCC was obtained using red-tile waste with the proportion of 50 % as substitution of fine aggregates. The compressive strength of SCC using red-tile with the proportion of 50 % at age 7; 14; and 28 days were 64.746 MPa;, 65.564 MPa; and 71.940 MPa, respectively. While the maximum modulus of elasticity and modulus of rupture of SCC were obtained using red-tile with the proportion 50 % at age 28 days, and the modulus elasticity and modulus of rupture were 25863.192 MPa and 7.076 MPa, respectively.

SAMBUNGAN BALOK BETON BERTULANG PRACETAK DENGAN LAPISAN CFRP DAN PLAT BAJA Da ConceiÃ§Ã£o, Gilberto De Carvalho; Lisantono, Ade
Jurnal Teknik Sipil Vol 15, No 2 (2019)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Precast reinforced concrete beams are building structures without using on-site casting and can shorten construction time and reduce costs and labor. In this research a method was used to overcome the shortcomings of the precast method in terms of weight and size, by dividing the precast segment into a new connection between the beam to the beam where the connection was reinforced with Carbon Fiber Reinforced Concrete (CFRP) and Steel Plate. Where there are 2 beam joints namely Type II connection on the connection area, steel plate and bolt data are used as Type III washers and joints, CFRP is added to the joint area and 6 mm thick steel plate and 20 mm diameter bolt. The dimensions of the beams used are 150 x 250 x 3200 mm with 4P10 longitudinal reinforcement as pressure reinforcement and 2P10 as pressure reinforcement. While 2P8-200 as shear reinforcement in the field area, 2P8-150 for connection area and 2P8-100 for support area. Where the quality of reinforcing steel in this method is BjTP 24, with a yield stress of 323.533 MPa for P10 and 237,249 MPa for P8. According to the results of the study the beam joints with centralized loading, the type II joint beam obtained a load capacity of 2782,718 kg while the type III connection experienced a load increase of 3553,875 kg due to the addition of CFRP layers on the beam joints.

Retrofitting Sambungan Kolom-Balok Beton Bertulang Ekspansi Planar Segitiga dengan Variasi Ukuran Sigit Hernowo; Ade Lisantono
Forum Teknik Vol 37, No 1 (2016)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (878.631 KB)

Highly seismic activities in Indonesia, that is followed by a lot of high magnitude earthquakes, make awareness of the people to anticipate the damage that caused by this disaster. The Codes of earthquake have changed and are accompanied by the change of seismic region. There must be some efforts to improve the existing building structure. One of the efforts is retrofitting the beam-column joint which is the weakest element of structure in the building when subjected to earthquake loading. Four beam-column joint reinforced concrete specimens, namely SJC, SJ-01, SJ-02, and SJ-03, made of normal concrete and plain reinforcement were tested in this experimental program. Beam with 150 mm width, 250 mm high, and 1500 length be jointed with column that has section area of 250 mm x 250 mm, and 1750 mm length. The specimens of SJ-01, SJ-02 and SJ-03 were retrofitted by triangular voute in lower side of the beam in the beam column joint region with 125 mm, 187.5 mm, and 250 mm side length, respectively. All specimens are tested with cyclic loading using hydraulic actuator. The results show that the increasing strength of specimen SJ-01 and SJ-03 compare to the reference specimen were 12.74% and 10.29%, respectively. While the strength of specimen SJ-02 a little bit decreasescompare to the reference specimen.Keywords: beam-column joint, reinforced concrete, retrofitting, voute, cyclic loading.

Cold-Formed Steel-Concrete Beams Ade Lisantono; Haryanto Yoso Wigroho; Meita Ratna Sari
Jurnal Teknik Sipil Vol 19 No 2 (2012)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2012.19.2.3

Abstract. Light weight material usually be chosen as a material for earthquake resistant building in order to reduce inertia force of the building. In comparison with others section, a cold-formed steel section is a lighter section and makes this section is categorized as a light weight material. During reconstruction of Yogyakarta earthquake of 27th May 2006 some housings were constructed by using cold-formed steel sections. However, investigation on the utility of cold-formed steel section for structural elements was very limited. Two experimental programs of coldformed steel-concrete beams were carried out. One of the experiment used normal weight concrete and the other used light weight concrete. In the experimental programs, the normal weight concrete had the compressive strength of 23.53 MPa, while the light weight concrete had the compressive strength of 12.91 MPa. This paper tried to analyze and compare those experimental programs. The comparison showed that the cold-formed steel beam with normal weight concrete gave higher load capacity than the cold-formed steel beam with light weight concrete. However, if the comparison was taken with respect to the ratio of compressive strength to density, the cold-formed steel beam with light weight concrete might give more promising bending elements for earthquake resistant building.Abstrak. Bahan yang ringan biasanya dipilih sebagai bahan untuk bangunan tahan gempa, dengan tujuan untuk mengurangi gaya inersia akibat gempa pada bangunan tersebut. Dibandingkan dengan profil lainnya, profil baja dengan bentukan-dingin merupakan profil yang lebih ringan sehingga membuat profil ini dapat dikategorikan sebagai bahan yang ringan. Pada rekonstruksi rumah-rumah akibat gempa Yogyakarta tanggal 27 Mei 2006, beberapa diantaranya dibuat dengan menggunakan profil yang ringan yaitu profil baja bentukan-dingin sebagai elemen strukturnya. Meski banyak digunakan sebagai elemen struktur, tetapi penelitian elemen struktur yang menggunakan profil baja bentukan-dingin sangatlah terbatas. Dua program eksperimental balok yang menggunakan profil baja bentukan-dingin dengan pengisi beton telah dilakukan. Yang satu menggunakan pengisi beton normal dan yang lainnya menggunakan pengisi beton ringan. Pada program eksperimental tersebut, beton normal yang dipakai mempunyai kuat tekan 23,53 MPa, sedangkan beton ringan mempunyai kuat tekan 12,91 MPa. Makalah ini mencoba untuk menganalisis serta membandingkan kedua program eksperimental tersebut. Hasil perbandingan menunjukkan bahwa balok profil baja bentukan-dingin yang berpengisi beton normal memberikan kapasitas beban yang lebih tinggi dari pada balok profil baja bentukan-dingin yang berpengisi beton ringan. Akan tetapi apabila perbandingan didasarkan pada rasio kuat tekan terhadap berat jenisnya, maka balok profil baja bentukan-dingin dengan pengisi beton ringan merupakan elemen lentur yang lebih menjanjikan untuk digunakan sebagai elemen struktur pada bangunan tahan gempa.

PENGARUH PENAMBAHAN SERAT POLYPROPHYLENE TERHADAP SIFAT MEKANIK BETON EXPANDED POLYSTYRENE Desi Maryani; Ade Lisantono
Jurnal Teknik Sipil Vol. 17 No. 3 (2023)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i3.7887

Beton expanded polystyrene (EPS) mempunyai berat jenis lebih ringan dibanding beton normal. Beton EPS banyak diminati untuk bahan dasar pembuatan elemen non struktural suatu bangunan, misalnya partisi pracetak. Penambahan serat polyprophylene pada beton diharapkan dapat memperbaiki ikatan dan daya lekat pada bahan penyusunnya, sehingga mencegah terjadinya retak dan menambah daktilitas pada komponen beton ringan. Pengujian kuat tekan dan modulus elastisitas, kuat tarik belah, serta kuat lentur mengacu pada ASTM C330-09 tentang Standar Specification for Lightweight Aggregates for Structural Concrete. Benda uji berupa silinder beton dengan diameter 150 mm dan tinggi 300 mm yang akan diuji saat usia beton 7 hari, 14 hari, 21 hari, dan 28 hari. Pada pengujian kuat tekan dan modulus elastisitas, serta kuat tarik belah digunakan sekurang-kurangnya 3 silinder untuk tiap variasi pengujian, sementara pengujian kuat lentur digunakan sekurang-kurangnya 2 balok dengan dimensi 200x200x700mm. Hasil penelitian menunjukkan kuat teksn rata-rata menurun berturut-turut 14%, -35%, -6%, dan -19% saat usia beton 7 hari, 14 hari, 21 hari, dan 28 hari. Hal ini disebabkan oleh meningkatnya kebutuhan air untuk melarutkan serat polyprophylene. Hasil pengujian kuat tarik belah meningkat berturut-turut -26%, -16%, 15%, dan 33% saat usia beton 7 hari, 14 hari, 21 hari, dan 28 hari. Penggunaan serat polyprophylene pada silinder beton meningkatkan kuat tarik belah beton EPS sebesar 33% saat usia beton 28 hari dibandingkan dengan beton non serat. Peningkatan nilai kuat lentur (MOR) beton serat berturut-turut sebesar 22%, 38%, -11%, dan 28% saat usia beton 7 hari, 14 hari, 21 hari, dan 28 hari terhadap beton non serat.

PENGARUH RANGKAIAN GEMPA UTAMA – GEMPA SUSULAN TERHADAP REDUNDANSI DAN KERUNTUHAN PROGRESIF STRUKTUR RANGKA PEMIKUL MOMEN BETON BERTULANG Zacharias, Hendry David; Utomo, Junaedi; Arfiadi, Yoyong; Lisantono, Ade
Jurnal Teknik Sipil Vol. 18 No. 1 (2024)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v18i1.9601

Rangkaian kejadian gempa meningkatkan kerusakan kumulatif pada struktur karena meningkatnya simpangan antar lantai, terutama untuk daerah potensi gempa kuat atau bangunan penting. Redundansi bergantung pada karakteristik dinamis dan geometris strukturnya serta sifat eksitasi gempa, peningkatan redundansi tidak dapat didefinisikan sebagai kriteria untuk meningkatkan perilaku seismik struktur, namun sangat berkaitan erat dengan keruntuhan progresif. Penelitian ini melihat pengaruh rangkaian gempa MSEq –ASEq terhadap redundansi dan keruntuhan progresif dari 16 model struktur rangka pemikul momen beton bertulang dengan variasi jumlah bentangan dan jumlah lantai tapi dengan luas denah yang sama, dengan melihat nilai simpangan antar lantai dan rotasi balok serta rasio gaya aksial terhadap kapasitas aksial kolom pada beberapa skenario pelepasan kolom. Rangkaian gempa MSEq-ASEq berpengaruh sangat signifikan terhadap kebutuhan redundansi struktur terlihat dari peningkatan nilai simpangan antar lantai namun tidak untuk keruntuhan progresif dimana tidak terjadi peningkatan nilai rotasi balok dan gaya aksial kolom (rasio ≈ 1). Menambah jumlah bentangan pada denah tidak selalu mengurangi besaran simpangan antar lantai, namum efektif untuk mengurangi nilai rotasi balok dan rasio gaya aksial terhadap kapasitas aksial kolom

Pengaruh Epoxy Terhadap Sifat Mekanik Beton Dengan Bahan Tambah Kaca Sebagai Substitusi Agregat Halus LISANTONO, Ade; TANDEAN, Evander
Jurnal Rekayasa Konstruksi Mekanika Sipil Vol 2 No 2 (2019): Volume 2 Nomor 2 Tahun 2019
Publisher : Fakultas Teknik Universitas Katolik Santo Thomas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/jrkms.v2i2.521

y concrete consists of cement, water, sand and gravel. To increase the adhesion of concrete materials is adding epoxy to the concrete. While, to make the concrete has a good in water-resistant is adding glass powder which is expected to fill the air cavity in the concrete. This study aims to determine the adhesion of epoxy to glass with aggregates in a concrete ixture. Substitution of fine aggregate with glass powder is 50% by weight of fine aggregate and the use of epoxy is 10% by weight of cement. Test specimens were cylindrical with the size of (150 Ã— 300) mm. Specimens with the size of (500 Ã— 100 Ã— 100) mm were also made. The Tests were carried out at the age of 14 and 28 days of concrete. Three variations were made, namely normal concrete, concrete with glass powder, and concrete with glass powder plus epoxy. The test results show that the substitution of glass powder can improve the mechanical properties of concrete, while the addition of epoxy does not significantly influence the mechanical properties of concrete with glass powder.

Title

Found 12 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 12 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 12 Documents
Search