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Journal of Civil Engineering
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 20861206     EISSN : 25799029     DOI : -
Core Subject :
Journal of Civil Engineering merupakan jurnal bidang teknik sipil yang mengacu pada sistem standar internasional dalam pengelolaannya dengan tujuan utama memajukan bidang teknik sipil melalui publikasi ilmiah demi terwujudnya kemudahan mendapatkan ilmu dan informasi serta mendukung kemajuan teknologi.
Arjuna Subject : -
Articles 5 Documents
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Search results for , issue "Vol 34, No 2 (2019)" : 5 Documents clear
PREDICTING THE FLEXURAL RESPONSE OF A REINFORCED CONCRETE BEAM USING THE FRACTURE-PLASTIC MODEL Asdam Tambusay; Priyo Suprobo
Journal of Civil Engineering Vol 34, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.6470

Abstract

This paper describes an attempt to predict the flexural response of a reinforced concrete (RC) beam using nonlinear finite element analysis. To facilitate direct comparison, the beam was tested experimentally under four-point bending with the load increased monotonically. The load-deflection response, crack pattern and failure mode were observed in the experiment. Analysis incorporating the application of ATENA 3D was performed using the fracture-plastic model which is based on the classical orthotropic smeared crack formulation and crack band model. The applicability of this model was demonstrated through detailed simulation of RC beam with identical geometry, reinforcement arrangement, and material properties. From this study, it is found that the overall predicted responses are in very good agreement to those obtained from the experiment. It is also found that the feature in ATENA enables the presentation of reasonably maximum principal strains of concrete and rebar elements which can, therefore, be associated with the predicted crack bands.
SORPTIVITY AND CHLORIDE PENETRABILITY EVALUATION OF CONCRETE INCORPORATING FLY ASH AND SILICA FUME Wahyuniarsih Sutrisno; Gabriel Ghewa; Priyo Suprobo
Journal of Civil Engineering Vol 34, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.6576

Abstract

Diffusion is believed to be the main mechanism of fluid ingress into the concrete. However, in partially saturated concrete, the fluid will mainly be absorbed by the capillary suction mechanism, which associates with the sorptivity properties of the concrete. This paper presents the results of an experimental program to investigate the influence of Portland cement substitution with Silica Fume (SF) and Type F Fly Ash (FA) on the rate of absorption, which also known as sorptivity, and chloride penetration of concrete. The sorptivity of the concrete was evaluated according to ASTM 1585, while the chloride penetration was evaluated according to ASTM C 1202. By substituting part of cement with FA and SF, it was found that the sorptivity of concrete is reduced. Furthermore, all type of concrete with supplementary material, including CFA, CSF and CSM, is confirmed to enhance the ability of concrete to resist chloride penetration compared yo normal concrete (NC).
ASSESSMENT TO THE PILE BEARING CAPACITY OF INJECTION PILE BASED ON PILE DRIVING ANALYZER AND RE-INJECTION TEST RESULTS (CASE: EASTKAL PENAJAM PROJECT) Trihanyndio Rendy Satrya; Musta'in Arif
Journal of Civil Engineering Vol 34, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.6702

Abstract

Injection piling method was used as the main pile driving method at the three warehouses in the Eastkal Penajam project, Kalimantan, Indonesia. The sub-soil compositions are dominated by clay and sandy soil with very soft to medium consistencies. By using injection pile equipment, it is possible to measure the pile bearing capacity from the loading gauge. Since the soil is dominated by clay, the friction capacity overtime will be improved. For that purpose, the piles were re-injected again after 3, 10, 11, and 25 days. To establish the forecasting expression of pile bearing capacity enhancement for other piles, non-linear regression analysis was performed. To verify the result, pile driving analyzer (PDA) test for selected piles was carried out. The results from PDA test were further analyzed by using both direct fields reading in the PDA data logger and the Case Pile Wave Analysis Program (CAPWAP). A linear regression analysis was carried out to complete the blank data due to the field measurement limitation. In addition to the obtained field data, theoretical analysis of pile bearing capacity with Luciano Decourt method is carried out. From the comparisons of all data, it can be concluded that re-injection pile method provides the highest safety factor followed by PDA test, CAPWAP analysis, and theoretical design calculation with Luciano Decourt method.
FINITE ELEMENT MODELING OF CIRCULAR REINFORCED CONCRETE COLUMN CONFINED WITH CFRP UNDER ECCENTRIC LOADING Angga Bayu Christianto; Bambang Piscesa; Faimun Faimun; Pujo Aji
Journal of Civil Engineering Vol 34, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.6375

Abstract

This paper presents nonlinear finite element analysis of eccentrically loaded circular Reinforced Concrete (RC) column confined with Carbon Fiber Reinforced Polymer (CFRP) wraps. The concrete constitutive model uses a plasticity-fracture model which is restraint sensitive, utilize a non-constant plastic dilation rate, and is able to simulate the plastic volumetric compaction of concrete core under high confining pressure. For validation of the models, two available specimens from the literature are used in the validations. Excellent agreement between the numerical models and the available test results are obtained in this study. A detailed investigation on the confinement effectiveness of both external and internal confining devices are presented and discussed. This discussion of the confinement effectiveness is important to be included in the design formula.
TRANSCRITICAL FLOW SIMULATION USING SHALLOW WATER EQUATION MODEL Satria Damarnegara; Rheszha Pahlavi Ali; Mohamad Bagus Ansori
Journal of Civil Engineering Vol 34, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.6468

Abstract

This paper shows the capabilities of DELFT3D-FLOW shallow water equation solver on transcritical flow. Two grid configurations are tested using a shock capturing numerical schemes that available on the solver. The simulation shows a good agreement with the analytical solution and proper grid resolution is needed to obtain a stable result. The model then used to simulate a real scale spillway chute channel of Logung Dam in Kudus-Central Java. The model could properly simulate the hydraulic jump, calculate the Froude number and stilling basin performance.

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