cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14455/isec.res.2018.120
title: Remaining Strength Evaluation of Ferry Bridge Corroded Locally

description: This paper presents the results of a nonlinear finite element analysis to determine the remaining ultimate strength of a ferry bridge with local corrosion at the girder flange. The ultimate strength decreases with the corrosion thinning of the flange, when the corrosion damage locates at the center of the span. On the other hand, when the corrosion damage exists near the support, the ultimate strength did not decrease, which shows the repair of the flange thinning near the support is not so effective in strength rehabilitation of the bridge. The reason of these facts is
description: the collapse of the bridge is due to bending moment in the former case, but in the latter, it is due to not bending moment but shear force, therefore, flange thinning does not concern with the shear strength. Thus, rational maintenance will be possible after clarifying the collapse mode and the remaining strength of the bridge
DOI: 10.14455/isec.res.2018.121
title: Response of composite steel plate girder bridges subjected to debris fires

description: Bridge fires have been a serious concern for asset owners for decades. Considerable research work has been published on the assessment of bridges subjected to hydrocarbon fires and Wildland Urban Interfaces (WUI) fires like bushfires. However, the impact from fires that may have been generated due to onsite-accumulated debris, has been largely overlooked in the past. Prolonged duration of debris fires might well cause significant damage to the bridges, unless properly accounted during the design stage. The current study investigates the influence from debris-generated fires on steel girder bridges, using a reasonably validated advanced numerical modelling framework. Fire development was modelled first as a static, and then a travelling fire, using fire dynamic simulation (FDS) to capture the Adiabatic Surface Temperature (AST) development of the structure. The resulted AST was coupled with thermo-mechanical analysis using sequentially coupled thermo-mechanical analysis procedure in ABAQUS. The numerical model was used to estimate the temperature and displacement development of the bridge. The outcome from the study will facilitate asset managers for conducting necessary risk assessments incorporating the influence of onsite flammable debris for bridges.
DOI: 10.14455/isec.res.2018.122
title: Retrofitting of RC Beams using Ultra High Performance Fiber Reinforced Concrete

description: Shear deficient structures have been strengthened or repaired by using various methods, e.g., external pre-stressing, shotcreting, steel plate bonding, polymer impregnation, fiber reinforced polymers (FRPs). But there were problems with each of the above techniques as the use of FRP gives sudden failure due to de-bonding, steel plates got corroded after some time and several losses in the case of external pre-stressing. To overcome all the above problems faced in different retrofitting techniques, a new cementitious material with ultra high performance characteristics like very high compressive strength (above 110 MPa), high tensile and flexural strength due to the addition of fibers, very less permeable and high workability i.e. UHP-FRC came into existence. In the present study, shear deficient RC beams initially stressed to a prefixed percentage, i.e. 60% of the ultimate failure load are retrofitted using UHP-FRC. Retrofitting is done using side face retrofitting. From the study it is seen that the ultimate load carrying capacity of RC beams retrofitted with UHP-FRC is significantly increased with side face retrofitting. Moreover, this technique also increased the ductility and energy absorption of RC beams which resulted in the usefulness of UHPFRC as a retrofitted material.
DOI: 10.14455/isec.res.2018.123
title: Role of Financial Capability in Managing Impacts of FOREX Fluctuations on Construction Business

description: Many reasons have led construction organizations to venture into international projects in the past years. Despite offering opportunities for business expansion, risks from foreign exchange (FOREX) fluctuations are some of the challenges that need addressing. These fluctuations have affected the construction business at company level and project levels. Most of the impacts are related to financial issues. Thus, coordinating strategic plans to deal and mitigate the impacts of FOREX fluctuations is crucial. A qualitative research was conducted in response to this. Data collection for this research involved interviewing 14 respondents who represented Malaysian construction organizations and actively involves in international construction projects. The respondents ranged from Chief Executive Officer (CEO), Chief Financial Officer (CFO), financial and project managers. NVivo Version 11.0 was used in managing the transcribed interview data. The data were analyzed via content analysis. Results revealed that FOREX fluctuations give impacts on the financial performance of construction businesses. This study also suggested mitigation actions that could be implemented to manage these issues. The most important finding is that Financial Capability (FC) is relevant and essential to overcome those issues. Finally, a framework of FC in managing impacts of FOREX fluctuations on construction business is proposed.
DOI: 10.17632/6f8wbxgm8p.1
title: Dynamic Programming for New Energy Vehicles based on their work modes Part II: Fuel Cell Electric Vehicles (FCEVs)

description: This is the second paper in a series of two that introduce our research on dynamic programming on new energy vehicles. In the first paper, we introduce the four main problems (the interpolation leakage problem, the dimension disaster problem, the standardization problem and the Markov problem) of dynamic programming on new energy vehicles, and put forward a unified dynamic programming model and its solution method for electric vehicles and hybrid electric vehicles. In this paper, we present a unified dynamic programming model and its solution method to solve these problems for fuel cell electric vehicles. The results demonstrate that the proposed method is much better than Basic Dynamic Programming and Level-Set Dynamic Programming in both calculation time and computation accuracy.
DOI: 10.7910/dvn/l6c4dk/2mb6sf
title: 113-5_0218.dcm
DOI: 10.7910/dvn/l6c4dk/gw9nln
title: 113-1_0016.dcm
DOI: 10.7910/dvn/l6c4dk/ju2zaz
title: 113-5_0144.dcm
DOI: 10.7910/dvn/l6c4dk/p1i3jr
title: 113-5_0119.dcm
DOI: 10.7910/dvn/l6c4dk/p8calz
title: 113-1_0218.dcm
DOI: 10.7910/dvn/l6c4dk/p8usfy
title: 113-5_0107.dcm
DOI: 10.7910/dvn/l6c4dk/vnqppw
title: 113-1_0222.dcm
DOI: 10.7910/dvn/l6c4dk/ywdgjy
title: 113-5_0212.dcm
DOI: 10.14455/isec.res.2018.124
title: Schedule Risk Analysis of Railway Projects using Monte Carlo Simulation for Improved Project Management

description: Railways have been used throughout history for the transportation of goods. Even though the inception of rail transport improved civilization, due to its inefficiencies, road transport is at present dominating the freight and logistics industry. Company A, which has the largest market share in the rail freight business, has embarked on projects to improve rail efficiencies by moving higher volumes of freight timeously. Most of the projects embarked on by Company A have failed largely due to the poor planning of the projects in the feasibility stages. Most of the planning schedules are overoptimistic and unrealistic making them unreliable and difficult to track. The scope of this study was to investigate the way in which planning schedules of Company A are developed by undertaking a schedule risk analysis on one of the planning schedules titled 'Design of railway exchange yard' and using Monte Carlo simulation to validate the schedule. If projects of Company A can be planned better, using schedule risk analysis, projects can become more successful and completed within the required time frame.
DOI: 10.14455/isec.res.2018.125
title: SEISMIC DAMAGE PREDICTION FOR JAPANESESTYLE WOODEN HOUSE IN THE 2016 KUMAMOTO EARTHQUAKE

description: Thousands of wooden houses were destroyed by the 2016 Kumamoto Earthquake. A seismic damage prediction function for wooden houses taking into consideration the consecutive strong earthquake motions, the amplification effect of ground surface layer, and the rupture propagation effect of seismic fault was proposed in this paper. Relationship between three ground characteristics above mentioned and the seismic damage for wooden house in the 2016 Kumamoto earthquake was analytically investigated by 3-D collapsing process analysis. The maximum drift angle was evaluated in this collapsing analysis of two-story wooden house.
DOI: 10.14455/isec.res.2018.126
title: Structural Analysis of Wooden Frames Used for Modern Wooden School Buildings

description: Japanese school buildings have been changed from modern timber structures to reinforced concrete structures after the Building Standard Law was established in 1950. Therefore, only few modern wooden school buildings exist currently. Ensuring the seismic resilience of these wooden school buildings is essential for their preservation. The objective of this study is to develop an analysis model for the seismic performance evaluation of modern wooden school buildings. The fracture modes and the relationship between the lateral load and deformation of wooden frames were examined based on the results of full-scale static lateral loading tests performed in a previous study. The analysis models of these specimens were developed and compared with test results to examine their validity. Analysis results were in good agreement with test results.
DOI: 10.14455/isec.res.2018.127
title: STRUCTURAL AND GEOTECHNICAL DESIGN OF A HIGH-RISE BUILDING USING A 3D BIM GENERATED MODEL

description: This paper presents the work performed by an undergraduate student group at the American University in Cairo as a first phase of their graduation project that mimics a state-of-the-art industrial experience in structural and geotechnical design of a high-rise building using building information model (BIM). A 3-D BIM was developed for the structure and used to generate an analytical model which is exported to a structural numerical analysis program, followed by a full design of the building elements and foundation. The considered building is 218 m high, in which the architectural design requires a successive 2-degrees twist per floor through the building height, resulting in a total twist of 80 degrees between the first and last floors. The architect also retracted the slabs every six stories from a group of columns, leaving 24 m-height laterally unsupported peripheral columns. As such, the vertical and horizontal building irregularities present challenges in the structural modeling and design and requires thorough analyses, particularly for seismic and wind considerations. Due to the high water table at the building site and the existence of a 12.5 underground basement, a special dewatering technique was proposed, along with the full tanking design consideration of the building basement.
DOI: 10.14455/isec.res.2018.128
title: Study on reduction of unit  water amount of concrete with waste gypsum

description: This study discovered that the combination of waste gypsum and fly ash was capable of being used as fine aggregate in concrete. However, results showed that the unit water amount of the concrete with waste gypsum had to be increased to assure the designated workability. In general, if the unit water amount of concrete increases, hardened concrete will have various issues. Therefore, in this study, we try to reduce the unit water amount of this concrete by the high-performance AE (Air Entraining) water reducing agent containing viscosity improver. In order to investigate the effect of the above AE water reducing agent for the reduction of the unit water amount of the concrete with waste gypsum, the workability of above concrete with this agent from slump test and air containing test was examined. Also, compression, tension, and bending, of the concrete with waste gypsum from each strength test was measured. On the basis of the test results, it showed that we are able to assure the workability of fresh concrete with waste gypsum by the above agent used in this study, even if the unit water amount is reduced. Also, it was confirmed that the compressive strength of concrete with waste gypsum is equivalent to the strength of concrete without waste gypsum.
DOI: 10.14455/isec.res.2018.129
title: Study on The Influence of Curing Temperature on Mechanical Properties of Modified Fly Ash Mortar

description: Using fly ash as an admixture for concrete can contribute to environmental load reduction and concrete quality improvement. However, as the quality of fly ash fluctuates depending on the ash source, quality stabilization is required. It was proved that concrete with fly ash of Japanese Industrial Standardized class II has different strength properties depending on curing temperature, but it is not obvious whether concrete with modified fly ash by flotation method has similar properties. In this study, the influence was examined on the mechanical properties when changing the curing temperature of mortar using fly ash modified by the flotation technique. The sealing curing was set to 5ฐC, 20ฐC, 40ฐC and 60ฐC. Also, after 7 days, 5ฐC, 40ฐC and 60ฐC, is changed to 20ฐC and compression strength and static elasticity coefficient were measured. The value of compressive strength and static elastic modulus showed that mortar using modified fly ash had the same characteristics as mortar with ordinary fly ash. Because it was represented by one strength compressive estimation curve regardless of the curing temperature, it became clear that compressive strength can be evaluated by roughly using accumulated temperature as an indicator.
DOI: 10.14455/isec.res.2018.130
title: Sustainability implications of the use of hybrid polyvinyl alcohol fibre-reinforced ferrocement and fly ash

description: Extensive research has been conducted on the use of fly ash as a partial replacement of cement in order to promote the sustainable use of cement. Most of these research has focused on the investigation of the cementitious properties of the blended cement and the engineering properties of the end products, such as fly ash concrete. The sustainability benefit of using fly ash is often qualitatively perceived without any quantitative assessment. A recent study on the performance of hybrid polyvinyl alcohol fibre-reinforced ferrocement (HPVAF) shows that adding moderate amounts of fly ash in the mixes could maintain the ultimate flexure and tensile strength of HPVAF. The increased service life/durability and the use of FA up to a 25% replacement for cement in HPVAF not only conserve virgin resources for producing energy-intensive construction materials but also avoid associated environmental impacts due to the manufacturing of these materials. This certainly offers socio-economic benefits in terms of cost saving, enhance affordability and guaranteed material supply for the people both in current and future generations. Life cycle sustainability assessment (LCSA) was conducted to determine these triple bottom line benefits associated with the use of HPVAF and FA in building construction.
DOI: 10.7910/dvn/l6c4dk/akepan
title: 113-1_0128.dcm
DOI: 10.7910/dvn/l6c4dk/bq9ohk
title: 113-5_0006.dcm
DOI: 10.7910/dvn/l6c4dk/gu8opd
title: 113-1_0192.dcm
DOI: 10.7910/dvn/l6c4dk/udm4ld
title: 113-1_0102.dcm
DOI: 10.7910/dvn/l6c4dk/ukvnsz
title: 113-1_0027.dcm
DOI: 10.7910/dvn/l6c4dk/yschhn
title: 113-5_0163.dcm
DOI: 10.7910/dvn/l6c4dk/zjnxxo
title: 113-1_0001.dcm
DOI: 10.7910/dvn/l6c4dk/zsd4tk
title: 113-5_0200.dcm
DOI: 10.7910/dvn/l6c4dk/zya1ck
title: 113-5_0221.dcm
DOI: 10.14455/isec.res.2018.131
title: Tender Evaluation: MCDM techniques

description: The decision of tender evaluation and allotment is one of the important step of any construction project. There has been a trend away in tender evaluation process from considering quantitative parameters ("lowest price win", "maximum benefit win") to other qualitative parameters (past performance, time of completion). This paper reviewed past and recent literature in order to identify the current tendering process and the various techniques that have been applied previously. The study utilized different MCDM techniques for evaluation of tendering process. Multi-criteria decision making research has become one of the main areas of research for dealing complex and critical decision problems. This paper outlines the use of various systematic decision making tool for the tender selection. Qualitative and quantitative criteria are compared, and the uncertainty associated with the selection of right contractor is highly reduced. By using a case study the tender evaluation is fully investigated applying various MCDM techniques. Results from the different methods are compared and fuzzy extend analysis, fuzzy TOPSIS showed slight difference in results from the other methods.
DOI: 10.14455/isec.res.2018.132
title: Tensile Creep of Fly Ash Concrete at Early Age Considering the Effect of Tensile Young's Modulus Development

description: Tensile properties are important for predicting tensile stress which causes thermal cracking. Fly ash, a by-product from coal-fired power plants, has been recently used to reduce such thermal cracks. However, investigations dealing with tensile properties of fly ash concrete are still limited. This study focuses on the tensile properties of concrete mixed with fly ash at an early age. Fly ash was mixed in general purpose concrete with a cement-replacement ratio of 20% by mass to simulate fly ash concrete used in Japan. To examine tensile Young's modulus and tensile creep, direct tension test was conducted using dog-bone shaped specimens. The tensile creep tests were conducted at the age of 3 days or 7 days, and the loading (30% of splitting tensile strength at the loading age) was sustained for 14 days. Past investigations usually assumed a constant elastic strain during creep test. It should be noted however that elastic strain at early age decreases with the age of concrete as hydration continues. This study takes a consideration of Young's modulus development during creep test to distinguish actual creep and elastic strains. Test results show that creep strain has been underestimated when assuming constant elastic strain.
DOI: 10.14455/isec.res.2018.133
title: THE ROLE OF EFFECTIVE COLLABORATION FOR SUCCESSFUL DELIVERY OF CONSTRUCTION PROJECTS

description: This paper is written with the purpose of assessing the role of effective collaboration for successful delivery of construction projects. Generally, in construction industry, to come up with the successful project delivery
description: the construction management team has to work against any factor that may lead to cost overruns, project delays, poor quality delivery and high level of variation. Construction projects present extreme varieties and occur in different size, shape and quality. Undertaking any construction project is a process that involves many bodies and organizations. Effective collaboration between the various parties is crucial for successful completion of both design and construction. Based on a case study of a commercial building project, this work discusses how project managers can use collaboration approach to solve project challenges that may arise during execution such as high level of project variations, endless time extension and disputes between parties to the contract. Collaborative Approach in Problem Solving helps the integration of knowledge and gain of experience, to reduce payment delay, achieve the proper evaluation and control of the schedule of activities and to motivate the contractor to achieve effectiveness and efficiency. The effective collaboration between the various parties and the early involvement of the contractor are crucial for successful completion of both design and construction and the early integration of knowledge.
DOI: 10.14455/isec.res.2018.134
title: Three Face Attachment Retrofit against Fatigue Cracking at Steel Girder Web Penetration

description: Fatigue cracking in steel girder web penetration details is so dangerous that it can break steel girders. Since a number of highway bridges have such web penetration details in Japan, it is of urgent importance to grasp these fatigue strength properties. In this study, we investigate stress reduction effects of three face attachment retrofit through fatigue tests using a large girder specimen with web penetration details where cross beam lower flanges are connected to the lower surface of a slot by welding. As a result, there is very little difference between two and three face attachments about stress reduction effects, while they are more effective than one face attachment. The upper side attachment is more effective than the lower side attachment, while both side attachment is best. Two and three face both side attachments can reduce about 40% of stress concentration, while two and three face upper side attachments can reduce 50 60%
DOI: 10.14455/isec.res.2018.135
title: TURK SALTY MORTAR THROUGH ADDITION OF PLASTIC AND COTTON WASTE MATERIALS TO STABILIZE PROBLEMATIC COASTLINES

description: Invention of Turk Salty Concrete is recommended for the GOTVAND Reservoir Dam, SW of Iran. This new type of concrete can be mixed with pure salty water to stabilize the salty domes. For the development of the mix, a ratio was defined as the proportion of the salty water mass to the mass of the materials used (clay, bentonite, cement type II). These proportions varied from 0.8 to 1.80 in the mix. The proposed mix presented a significant compressive strength when mechanically tested. The maximum bearing capacity was measured to be more than 10,500kpa. This is a significant capacity for salty cementation mixtures. In this paper, new mixture designs are reported developed by adding waste materials such as plastic bottles and cotton fibers. As the waste materials are detrimental to the environment and coastlines health, the inclusion of waste would have the added benefits of helping in the environmental issues. The results were found to be encouraging since it is shown that they improve durability, breaking stress and the modulus of toughness. Other research studies are currently underway examining the behavior of Turk Salt Mortar (TSM) by adding wasste materials such as date palm tree fibers. TSM can be used in deep injection grouting for protection of shorelines that come in contact with sea water.
DOI: 10.14455/isec.res.2018.136
title: ULTIMATE SLIP BEHAVIOR OF PERFOBOND STRIP UNDER THE LATERAL CONFINEMENT PARALLEL TO THE PBL PLATES

description: Perfobond strip (called PBL, hereafter) proposed by Leonhardt in Germany is widely used as the validated shear connector in steel-concrete composite structures. Fujii et al. proposed a fracture mechanism of PBL as follows: Slip force (shear force) acting on a PBL causes the expanding force which splits the concrete around the PBL. If restraint force, which is caused by cover concrete, rebar etc., resisting the expanding force exist, the slip strength is enhanced. Consequently, the fracture of PBL will happen when the expanding force exceeds the restraint force. Also, based on the above concept, they have given the evaluation formula of PBL slip strength and verified it by comparing previous experimental results. However, bonding force and frictional force are not taken into account in the formula. Through the loading tests of the composite girder, we found that the bonding and the frictional force, which appear along the boundary surface between concrete deck and steel flange, work as resistance force to not only the slip strength but also the expanding force. In this paper, the effects of the bonding force and the frictional force on the ultimate slip behavior of PBL are investigated experimentally, and an evaluation formula of PBL slip strength is improved by taking their effects into account.