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Civil Engineering Dimension

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Published by Universitas Kristen Petra Surabaya

ISSN : 14109530 EISSN : 1979570X DOI : -

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

The Civil Engineering Dimension (Dimensi Teknik Sipil) is a refereed journal, published twice a year, in March and September.

Arjuna Subject : -

Articles 422 Documents

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Use of Recycled Concrete Aggregate in Controlled Low-Strength Material (CLSM) Naganathan S.; Mustapha K.N.; Omar H.
Civil Engineering Dimension Vol. 14 No. 1 (2012): MARCH 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

Use of recycled concrete aggregate (RCA) is getting importance as it minimizes the use of fresh materials and eliminates waste disposal. One of the uses of RCA is as aggregate in Controlled Low Strength Material (CLSM). This paper reports the results of the investigation done on the use of RCA in CLSM. Various mixtures of CLSM were made using RCA, fly ash, and cement. Tests for workability, bleeding, density, strength, water absorption, sorption, and ultrasonic pulse velocity (UPV) were conducted. Results show that the compressive strength ranged from 1.71 MPa to 4.92 MPa, fresh density from 1879 kg/m3 to 1998 kg/m3. The strength of CLSM increases with the increase in fly ash; water absorption and bleeding decrease with increase in fly ash. It is concluded that the RCA has potential to be used in CLSM and the addition of fly ash enhances the performance.

STUDI TENTANG PENGAJUAN KLAIM KONSTRUKSI DARI KONTRAKTOR KE PEMILIK BANGUNAN Herry Pintardi Chandra; Eillen C Tunardih; Imelda Soetiono
Civil Engineering Dimension Vol. 7 No. 2 (2005): SEPTEMBER 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Claim in construction industry is a problem leading to request of additional cost or time extensions, which can lead to a dispute between the owner and contractor. This paper discusses claims submitted by the contactor to the owner. Causes of claim, types, proposal submitted by the contractors, and dispute resolution methods are observed. This research shows that design changes and additional work by owner are the major cause of claims. The contractorsâ claim mostly is in additional costs, the proposal submitted by the contractors includes an explanation of the cause of claim, and the claim resolution method used is engineering judgment. Abstract in Bahasa Indonesia : Klaim dalam industri konstruksi merupakan masalah yang dapat mengarah kepada permohonan tambahan biaya atau tambahan waktu serta perselisihan antara pemilik bangunan dan kontraktor. Paper ini mendiskusikan klaim yang diajukan kontraktor ke pemilik bangunan, dilihat dari penyebab, bentuk, dan proses pengajuan klaim, serta metode penyelesaian perselisihan dari klaim. Hasil penelitian menunjukkan bahwa penyebab utama klaim adalah perubahan desain dan pekerjaan tambah yang dilakukan pemilik bangunan, sedangkan klaim kontraktor sering berupa penambahan biaya, proses pengajuan klaim dengan menyertakan penjelasan terhadap penyebab klaim, dan metode penyelesaian klaim yang sering digunakan oleh para pihak adalah engineering judgment

Structural Strengthening using Carbon Fiber Reinforced Polymer Hartono .
Civil Engineering Dimension Vol. 14 No. 3 (2012): Special Edition
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper presents practical pointers to be considered in strengthening concrete structure with Carbon Fiber Reinforeced Polymer (CFRP) which becomes more popular nowadays. It is pointed out that the strengthening process consists of assessment, design, and installation andthat should be done by people who are competent, experienced, and professional in their field.

DEVELOPMENT OF NON-DESTRUCTIVE MONITORING SYSTEM FOR CHLORIDE PENETRATION INTO REINFORCED CONCRETE STRUCTURES Antoni Antoni
Civil Engineering Dimension Vol. 8 No. 2 (2006): SEPTEMBER 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

Reinforced concrete structures in marine environment are subjected to chloride penetration, which significantly degrades the structural performance due to the occurrence of corrosion in the steel reinforcement. The performance degradation of the structures would reduce the intended service life and caused higher maintenance and repair cost. Therefore, system to monitor chloride penetration into reinforced concrete before the starting corrosion of reinforcement is indispensable. An embedded probe system to detect chloride penetration into concrete was developed in Japan. This probe consists of a cementitious material body and some number of wires as sensors, which are set in the shallow ditches around the probe body. The system detect the chloride penetration by monitoring the initiation time of wire corrosion, it also has the advantages of continuous monitoring and early warning on the onset of corrosion in the reinforcement. However, the probe had not yet had high sensitivity for detecting critical chloride content in concrete. Therefore to increase its sensitivity, four types of improvements, namely partial coating of the wires, waterproofing on the probe body, filling the ditches with porous material and supplying small current on the wires were evaluated in this study. From the experimental result, it was observed that supplying small current and partial coating of the wires could improve the sensitivity of the probe significantly, while waterproofing treatment on the probe body and filling the ditches did not have significant contribution.

DEVELOPMENT OF FINITE DIFFERENCE METHOD APPLIED TO CONSOLIDATION ANALYSIS OF EMBANKMENTS Vipman Tandjiria
Civil Engineering Dimension Vol. 1 No. 2 (1999): SEPTEMBER 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

This study presents the development of the finite difference method applied to consolidation analysis of embankments. To analyse the consolidation of the embankment as real as possible, the finite difference method in two dimensional directions was performed. Existing soils under embankments have varying stresses due to stress history and geological background. Therefore, Skempton’s parameter “A” which is a function of vertical stresses was taken into account in this study. Two case studies were chosen to verify the proposed method. It is found out that results obtained from the proposed method agree with either recorded data or results solved using another solution.

The Optimization Model of Runway and Gate Assignment Nahry ,; Tjahjono, T.; Satiti, Y.J.
Civil Engineering Dimension Vol. 15 No. 2 (2013): SEPTEMBER 2013
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper is aimed to develop the optimization model of time slot utilization for both runway and apron gate of airport system. The model considers the objectives of airline company to minimize flight-taxiing-time and waiting-time for both landing and take-off. The optimization makes use of Network Representation (NR) in the form of two bipartite networks in order to transform the problem of runway and apron gate assignment into the network flow problem. Maximum Matching and Minimum Cost Flow on NR are the core of the model. An illustrative example is presented. The result shows that the model could increase both runway and apron gate capacities to as close as their theoretical capacities. Compared to the common practice which concerns only; the nearest available runway slot time, behind the scheduled time, and the nearest location of available gates to serve the flight, the model could reduce the total taxiing and waiting time.

IMPROVING MARINE CLAYS WITH ELECTROKINETICS METHOD Daniel Tjandra; Paravita Sri Wulandari
Civil Engineering Dimension Vol. 9 No. 2 (2007): SEPTEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

The high water content in marine clays could loosen the bond of soil particles, resulting in low bearing capacity and high compressibility of the soil. Excessive settlements could happened to the structures built on it. An electrokinetic process was attempted to reduce the high water content of the marine clay. An experimental study was conducted to evaluate the effect of electrokinetic on marine clay improvement. This study focused on the use of electrokinetic to enhance the soil bearing capacity of marine clay by improving index properties of the marine clay. The result of this research was obtained by doing several analyses on water content, pH value, and soil particles of soil sample located between cathode and anode. Based on the results from laboratory testing, it can be concluded that electrokinetic process decreased the water content and pH value of soil surrounding the anode. Also, soil particles surrounding the anode became in close proximity. This indicated that as it became closer to the anode, soil became denser.

Integration of Theory of Planned Behavior and Norm Activation Model on Student Behavior Model Using Cars for Traveling to Campus Setiawan, R.; Santosa, W.; Sjafruddin, A.
Civil Engineering Dimension Vol. 16 No. 2 (2014): SEPTEMBER 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

Although there are clear environmental, economic, and social drawbacks in using private vehicles, students still choose cars to get to campus. This study reports an investigation of psychological factors influencing this behavior from the perspective of the Theory of Planned Behavior and Norm Activation Model. Students from three different university campuses in Surabaya, Indonesia, (n = 312) completed a survey on their car commuting behavior. Results indicated that perceived behavioral control and personal norm were the strongest factors that influence behavioral intention. Attitude, subjective norm, perceived behavioral control, and personal norm explain 62.7% variance of the behavioral intention. In turn, behavioral intention explains 42.5% of the variance of the actual car use. Implications of these findings are that in order to alter the use of car, university should implement both structural and psychological interventions. Effective interventions should be designed to raise the awareness of negative aspects of car use.

Modeling The Influence of Project Manager Trustworthy Leadership Behavior Upon Construction Team Trust Andi Andi; Herry Santoso; Jonathan Simanjuntak
Civil Engineering Dimension Vol. 10 No. 2 (2008): SEPTEMBER 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

Appropriate trust and leadership have been frequently cited as key answer to the problems of cooperation and coordination in contractor’s teamwork. The objectives of this paper are to measure trust level of construction projects team, to investigate trustworthy leadership behavior of project managers, and to model the influence of project managers’ trustworthy leadership behavior upon team trust level. Sixty-one respondents from nine on-going construction projects participated in the questionnaire survey. The analyses show that in general the levels of trust and project managers’ trustworthy leadership behavior are medium (scores of 82.71 and 102.09 respectively). Meanwhile the positive influence of project managers’ trustworthy leadership behavior upon team trust level, modeled through multiple regression analysis with one dependent variable (i.e. trust) and three independent variables (i.e. leadership-results, leadership-integrity, and leadership-concern), is found to be significant. The model is evaluated and validated; the results reveal that the prediction of the model is satisfactory.

ALTERNATIF PEMAKAIAN STRUKTUR GABLE FRAME DENGAN MENGGUNAKAN BETON PRATEKAN PRACETAK Prasetio Sudjarwo
Civil Engineering Dimension Vol. 3 No. 2 (2001): SEPTEMBER 2001
Publisher : Institute of Research and Community Outreach - Petra Christian University

An alternative to a gable frame structural material is structural concrete, but the main problem is the big self-weight of concrete especially for a long span gable frame. Prestressed concrete that can resist bigger moment using smaller section can be used to overcome the self-weight problem. Other benefit of using prestressed concrete is its corrosion resistance and low maintenance cost. In this study 11 gable frames designed using steel are compared with the ones using precast prestressed concrete. The cost comparison shows that the precast prestressed concrete gable frames are cheaper than the steel gable frame. The advantage of precast prestressed concrete gable frame mainly comes from the cheap concrete material. Abstract in Bahasa Indonesia : Sebagai alternatif stuktur gable frame dapat dibuat dari beton struktural, tetapi masalah utama yang dihadapi adalah berat sendiri beton yang besar terutama untuk bentang yang besar. Pemakaian beton pratekan, yang mampu memikul momen yang lebih besar dengan penampang yang lebih kecil dapat mengatasi hal ini. Keuntungan lain dari beton adalah ketahanan terhadap korosi dan upah pemeliharaan yang rendah. Makalah ini membandingkan 11 buah struktur gable frame yang direncanakan dengan menggunakan baja dengan beton pratekan pracetak. Perbandingan harga yang dilakukan membuktikan bahwa struktur gable frame beton pratekan pracetak lebih ekonomis dibandingkan dengan struktur gable frame baja. Keuntungan yang didapatkan dari penggunaan beton pratekan pracetak adalah harga material beton yang jauh lebih murah dari baja.

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