cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.12755/isec.res.2016.123
title: Infrastructure needs in sub Saharan Africa with particular reference to South Sudan

description: This paper focuses on South Sudanโs infrastructure delivery in an efficient and effective way. South Sudan, though endowed with considerable natural resources, still lacks the necessary infrastructure for improvement in the standard of living for the population. This paper presents aspects of qualitative and quantitative data obtained using questionnaires and interviews. It was found that most of the population had access to health facilities within a 10 km radius and 65% of the respondents stated that they are able to walk such distances. Regional connectivity infrastructure was rated very highly by the respondents. As far as soft infrastructure needed for education, there is a crucial need to invest in adult literacy especially in the field of science and engineering to ensure appropriate participation of the citizens in the developmental agenda for South Sudan. Developing the human capital is crucial in attracting local and foreign investors in infrastructure projects. Tertiary institutions of learning in South Sudan will need to focus on education and training to insure that the country will have locally qualified people to design, construct and manage the necessary soft and hard infrastructure.The findings can be relevant to Asian countries of similar needs in developing their infrastructures.
DOI: 10.12755/isec.res.2016.124
title: The New Toll Road Financing Model Determination

description: There are three main problems in Indonesia toll road financing model. First, it is the lack of state budget and delayed funding distribution for land acquisition. The second problem is the lack of financial ability of the winning company which leads to financial closing failure. The third problem is related to the land acquisition process that a special purpose company has to obtain for 100% before it can propose a loan from a bank. Therefore, it is essential to develop a new financial modeling to be implemented in Indonesian toll road development. Seven financial models were identified as having been implemented successfully and effectively. These models are earmarked tax revenue, deep discount bonds, take out financing, tax increment financing, land leases, deferred debt, and private donation. However, these models have never been utilized for toll road projects in Indonesia. Therefore, this research aims to explore those seven financial models and determine the most suitable one to be implemented in Indonesia. Literature review and in-depth interview with the key stakeholders were conducted to collect the data. The results subsequently show that there are four models that have never been implemented in Indonesia. However, the combination of deep discount bond and land leases is the most suitable financing model for Indonesian toll road industry.
DOI: 10.12755/isec.res.2016.125
title: EFFECT OF SURFACE PREPARATION GRADE ON REPAIR BY MEANS OF COVER PLATES AND ADHESIVE

description: There are a lot of corroded steel bridges, which have to be prolonged its life in Japan. Corroded members in these bridges have generally local corrosion damages, and are often repaired by covering on the corroded area with steel plates or CFRP sheets etc. in order to rehabilitate the strength. Recently, adhesive such like epoxy resin is used often for bonding the cover plates though high-tensile bolts or welding have been adopted conventionally. In this case, surface preparation is the most important issue to bond the cover plates completely. However, Complete removal of rust and wastes is quite difficult in the fieldwork of surface preparation, though they should be removed. This paper present recovery effect of local corrosion damage by means of covering method used by adhesive when the rust is not completely removed. Axial tensile tests are conducted for rectangular steel plates of 1,100mm x 90mm x 12mm with 400mm length of corrosion-surface-unevenness on the both surfaces which are bonded steel plates or CFRP sheets by adhesive. The defects of rust-removal are made by putting soft material at the bottom of some holes of surface unevenness. From the test result, the ultimate strength decreased about 10% compared with non-rust state when the defect area rate is about 30%.
DOI: 10.12755/isec.res.2016.126
title: BUILDING THE EDUCATION REVOLUTION (BER) PROGRAM: GOVERNING THE IMPLEMENTATION OF PROJECT POLICIES

description: The project world is plagued with the interest and influence of diverse stakeholders shaping major project policy strategies. From deception, strategic manipulation to illusions of control, stakeholders using power and any other means to influence project strategies to achieve their desired ends: the tribalism and Machiavellianism of the project world. Governing tribalism or Machiavellianism especially at the front-end of projects is absolutely essential for project policy success. But how does a project manager shape a major project policy into success? The purpose of this research is to investigate tribalism and Machiavellianism and implement the necessary governance mechanisms to shape the implementation of project policies to optimize its success. This requires a deep understanding of human relational behavior. A case study approach was adopted that investigated Australiaโs largest infrastructure program in history, the AUD $16.2 billion Building the Education Revolution (BER) program, which was plagued with power and politics and Machiavellianism of the project world. Factors such as collective institutional leadership with formal and informal governance mechanisms in rationalizing decision making were identified as essential aspects from the case study. It was also revealed that if the factors are implemented at the front-end of project policies and managed appropriately it could significantly limit the potentness of the tribal or Machiavelli plague and optimize the chances of project policy success.
DOI: 10.12755/isec.res.2016.127
title: Pull-out Properties of Gypsum Board Anchors

description: In this study, pull-out properties of various anchors embedded in gypsum board were investigated. Tensile tests for anchors embedded in 200mm square size gypsum board were conducted to measure the load - load displacement curves. Strength of gypsum board was changed for three conditions and twelve kinds of anchors were selected which were ordinary used for gypsum board anchoring. The loading conditions were a monotonous loading and a repeating loading controlled by a servo-controlled hydraulic loading system to achieve accurate measurement. The fracture energy for each anchors were estimated by the analysis of consumed energy calculated by the load - load displacement curve. The effect of the strength of gypsum board and the types of anchors on the pull-out properties of gypsum board anchors was cleared. A numerical model to predict the load-unload curve of pull-out deformation of gypsum board anchors caused by such as the earthquake load was proposed and the validity on the model was proved.
DOI: 10.12755/isec.res.2016.128
title: Optimising the mix design of clay based geopolymer concrete

description: Although considerable research has been undertaken on alkali-activated binders for geopolymer concrete production, few of these studies have focused on clay based geopolymer concrete. This paper reports the results of an experimental investigation to optimize the mix design of geopolymer concrete prepared solely from clay material. Four Activator Modulus (AM); 1.0, 1.25, 1.5 and 1.75 for each of two Sodium Oxide (Na2O) dosages of 10% and 15% were selected for this investigation. A total of eight mix ratios comprising 72 specimens were tested. A comparison of physical behavior of clay based geopolymer mortar to that of fly ash based geopolymer mortar has been drawn throughout this paper. A Na2O dosage of 10% provided consistent strength for all AM tested, however the specimens prepared with Na2O dosage of 15% showed a reduction with time for all but the AM 1.0 specimens. Compressive strength of specimens prepared with AM of 1 for both of the Na2O dosage of 10% and 15% exhibited the superiority over other AM. The investigation showed potential for clay material to be an alternative to ordinary Portland cement (OPC).
DOI: 10.12755/isec.res.2016.129
title: Self-compacting concrete using agro-industrial wastes; Relative humidity effect and optimum mixing method

description: This research identifies the relative humidity effect and the optimum mixing method for Self-Compacting Concrete (SCC) containing OPC mixed with agro-industrial wastes of palm oil fuel ash (POFA) and low calcium based fly ash (FA). The effects of temperature and relative humidity on the fresh state properties were assessed under three conditions; moderate humidity, H1 (RH of 70 to 80% with temperature of 32ยฐC) and low humidity, H2 (RH of less than 70% with temperature of 36ยฐC) and extremely high humidity, monsoon season, H3 (RH of more than 80% with ambient temperature around 23 ยฑ2ยฐC). Six types of mixing method were evaluated for the ternary blended mix (TNY40) with two types of super-plasticiser (SP) additions: simultaneous and delayed, in order to discover the optimum mixing time and loading sequence. Furthermore, the slump flow retention was recorded every 15 minutes after batching. In conclusion, it was found that the increased temperature with lower relative humidity accelerates the reduction of workability (up to 15%) especially in POFA SCC as compared to FA and TNY (8%) samples. From the evaluation of various mixing method, the optimum mixing method observed was using the delayed addition of SP with a total mixing time of 12 minutes. This method resulted in excellent workability properties and with mixes retaining its slump within 15 minutes of batching.
DOI: 10.12755/isec.res.2016.130
title: Will Tradesman Collective Wage Agreement be exempted from the Hong Kong Competition Ordinance?

description: Tradesman Collective Wage Agreement (TCWA) has been used for construction tradesmen for many years. This would ensure the daily wage for qualified tradesmen will not fall below the agreed level. On 14th December 2015, the Hong Kong first ever Competition Ordinance (HKCO) came into effect. Under the First Conduct Rule (Section 6 of the HKCO), an undertaking must not (a)ย make or give effect to an agreement; (b) engage in a concerted practice; or (c) as a member of an association of undertakings, make or give effect to a decision of the association, if the object or effect of the agreement, concerted practice or decision is to prevent, restrict or distort competition in Hong Kong. Moreover, Section 15 of HKCO allows exemption for agreements that fulfil certain criteria such as economic efficiency and public policy. This study finds that TCWA will likely violate the First Conduct Rule due to its price fixing effect. Moreover, TCWA can apply for block exemption under Section 15 of the HKCO on the ground of engendering economic benefits. Reference is also made to the first application for exemption under the HKCO to illustrate the key arguments.
DOI: 10.12755/isec.res.2016.131
title: Extreme Environmental Load Models for Wave and Current Response Surface Method

description: The three most uncertain environmental design loads acting on offshore structures are wave height, current and wind velocity. If the reliability of structure is to be determined, then we need to have limit state function for load which requires that we should transform the environmental loads into load model. Load model, which predicts the load, will ultimately affect the design resistance and thus its final impact on cost could be large. Since, there are many offshore structures located in different offshore regions in Malaysia, the calibration of the environmental load model, should be evaluated to determine which model fits best. To obtain the environmental load model, response surface technique is generally applied. Load models suggested by DNV and ISO code are analysed to determine the best model fit for local conditions of Malaysia. Base shear, wave height and current velocity are used in a linear fit to determine polynomial response surface. The results showed that due to the geography of Malaysia different regions might have to use specific load models instead of a general load model for all regions.
DOI: 10.12755/isec.res.2016.132
title: RISK ASSESSMENT ON DESIGN AND BUILD PROJECTS A COMPARISON OF CONTRACTORS, CONSULTANTS AND OWNERS PERCEPTIONS

description: Design and Build (DB) has been classified as the most risky project due to the complexities and uniqueness of the project itself. Appropriate identification, analyzing, controlling and monitoring for the project risk are required to minimize the risk in DB projects. It is essential that all parties play an important role in minimizing risk inherent in design and build projects. Therefore, this study has been carried out to conduct risk assessment on design and build projects by the comparison of contractors, consultants and owners perceptions. To achieve the objective, the survey questionnaire was distributed among contractor, consultant and owner, that were directly involved in design and build projects. A total of 128 useable questionnaires were received and analysed using mean ranking, Kruskal-Wallis and Mann-Whitney Test. The result of these analyses shows that the contractors, consultants and owners have the same insight in risk factors presented namely: โclient financial capabilityโ and โinadequate cash flow by contractorโ. There are no significant differences in between all parties except โbureaucracy in government agenciesโ and โinflationโ. This study helps to increase understanding of contractors and owners on the importance of implementing risk management process at early stage of the projects.
DOI: 10.12755/isec.res.2016.133
title: THE BENEFIT OF THE NEW SUPER U BEAM USED FOR THE SECTION 4 OF THE WEST COAST EXPRESSWAY

description: The West Coast Expressway is approximately 315.8km in length and is separated into 15 sections of varying lengths. The concessionaire is West Coast Expressway Sdn. Bhd. Jacobs was involved in the Section 4, totaling a 5.59km in length and including 7 directional ramps. These structures feature a new โSuper U-Beamโ section whereas standard pre-tensioned precast beams such as the โinverted Tโ, โIโ, โMโ and โUโ beams are typical options for span lengths ranging from 25m to 40m. The โSuperโ U-beams are larger than standard U-beams and feature wide flanges. This arrangement results in a significant reduction in the number of beams necessary as well as a reduction in all the major material quantities. This paper will further discuss the technical details and advantages of the new โSuper U-Beamโ.
DOI: 10.12755/isec.res.2016.134
title: Performance Confirmation Test for Timber Column-Ground Sill Joints Reinforced with Aramid Fiber Sheets

description: High-performance aramid fiber sheets are a new class of composite materials composed of weaved polyamide fibers. This seismic performance and failure behavior of the timber columnโ"ground sill joints reinforced with the aramid fiber sheets were investigated. We conducted bending tests under cyclic loading for three columnโ"ground sill specimens. The maximum bending moments were estimated using a simple method and compared with the experimentally obtained moments. After reinforcement with the aramid fiber sheets, the joint strength improved but was dependent on the sheet-attaching form. Moreover, it is remarkable to break from peeling sheet. Further, the proposed sheet-attaching form (with widened crossing sheets) exhibited a higher restoring force than did the conventional form because of the sheet is further away from the center of rotation.
DOI: 10.25721/s5gf-1n82
title: Essais (fichier absent)
DOI: 10.12755/isec.res.2016.135
title: Is Project Based Learning the way to go?

description: Abstract: Many educational institutions have moved or are moving to project based learning (PBL) in Engineering. Project based learning and problem based learning have both advantages and also disadvantages. They are suitable for certain courses and may not be that helpful for certain other courses. In case of courses which require mathematical and analytical skills PBL does not seem to be very useful. As a matter of fact many students do not seem to learn the basics/fundamentals if Project Based Learning method is used. Courses like statics, Mechanics and structural analysis are the type of courses which can produce graduates without proper fundamental understanding of the subject matter if PBL is used for the entire course. In this paper an analysis of results based on assessments using examination/written tests/quizzes and project work/assignments was made. Quite significant difference was found. Many students get good grading in project/assignments but not in examination/written tests/quizzes. PBL is good for the students who have sound basic knowledge in fundamentals and have interest in solving the problems under guidance. But it should not be given lionโs share of credit in fundamental courses and should be considered as complementary for the traditional courses
DOI: 10.12755/isec.res.2016.136
title: THE DEVELOPMENT OF ANATOMY OF CONSTRUCTION DISPUTE

description: The advancement of the construction industry in Indonesia is often not accompanied with adequate infrastructure system, especially in terms of regulations and legal system. The enactment of Law no 80โ
DOI: 10.12755/isec.res.2016.137
title: A study on the factors affecting electro-migration characteristic of chloride ion in concrete

description: As one of the methods to evaluate the durability performance of reinforced concrete structure for the deterioration due to chloride attack, there is a migration test method. The effective diffusion coefficient by migration test method fluctuates with changes in the pore structure of concrete. In this study, focused on the changes of the pore structure with elapse of age of concrete, the objective of this study is to assess the influence exerted on electro-migration characteristic caused by the type of aggregate and with the condition of early age curing.It is confirmed that the resistibility to the movement by the migration test method of the chloride ion was increased by using non-ferrous slag fine aggregate. In the test specimen using sandstone of 40-65% of water-cement ratio, it is presumed that the increase in the effective diffusion coefficient of chloride ion is caused by the fact that the volume of continuous pore or pore size by the curing method and age of concrete become bigger.
DOI: 10.12755/isec.res.2016.138
title: Investigation of the compressive strength of Portland cement mixtures by application of bacteria Sporosarcina pasteurii

description: The concept of microbial concrete is one of the recent advances in concrete technology. In the past two decades, concrete technologies are working towards developing high performance concrete. Researches over the globe are being carried out in the wake of promising results found on the improvement of cementitious mix performances due to the application of live microorganisms. In this research live microorganism named Sporosarcina pasteurii, soil bacterium, has been used. Different set of experiments were carried out to investigate the effect of the bacterial medium, bacterial nutrient and bacterial concentration. From the test results it was found out that the bacterial medium had little effect, while the bacterial nutrient, whose main constituent is yeast extract, significantly reduced the compressive strength and increased the flow table as well as the slump in both mortar and concrete. Those samples with aforementioned bacteria together with the bacterial nutrient showed an improved compressive strength. The micro behaviors observed in terms of compressive strength indicate that this gain of strength was due to the calcite precipitation induced by the bacteria. The paper concludes by stating the need of further investigation, especially with regards to finding a better substitute for yeast extract of the bacterial nutrient.
DOI: 10.12755/isec.res.2016.139
title: Seismic Damage Prediction of Old Japanese-style Wooden House Using Predominant Period Distribution of Ground Surface Layer

description: The evaluation of a site effect is very important in the earthquake engineering when a seismic damage distribution of wooden house will be predicted by an accurate estimation of seismic intensity. In this pa-per, both horizontal and vertical microtremors at 51 sites in the west district in Maizuru city were meas-ured by servo type accelerometers, and also the predominant periods at 727 sites in the same area were numerically evaluated from the predominant periods measured at 51 sites. Moreover, seismic damage prediction of wooden house against a strong earthquake ground motion with the Japan Meteorological Agency seismic intensity of โ5 lower to 6 upperโ level was conducted by the relationship between the vulnerability function and the maximum drift angle of wooden house. The summary obtained in this paper is as follows.(1)A predominant period at the site without any ground information can be easily evaluated from micro-tremor H/V spectral ratio obtained from microtremor measurement.(2)Using the Inverse Distance Weighting method, a distribution map of predominant period of ground can be numerically estimated under the limited microtremor observation values.(3)Vulnerability function with a base shear coefficient can be obtained from the maximum drift angle of wooden house, which is evaluated by the predominant period of ground. Also, collapse rate of wood-en house for each base shear coefficient can be predicted by the vulnerability function.
DOI: 10.12755/isec.res.2016.140
title: Study on Retrofit Effects for Horizontal Plane of Traditional Wooden Houses Based on Full-scale Test

description: Many large earthquakes have occurred in Japan since the Southern Hyลgo Prefecture earthquake in 1995. Therefore, ensuring the seismic resilience of traditional wooden houses has become very important for their preservation. In Japan, there are a great number of studies on the vertical plane of traditional wooden houses such as seismic walls or connections. However, few studies have focused on the horizontal plane of traditional wooden houses such as floor or roof plane.The purpose of this paper is to examine the retrofit effects for the horizontal plane of traditional wooden houses based on full-scale tests. The first part of this paper is devoted to the experimental study to determine the structural behavior and characteristics of full-scale roof specimens. The test parameter is chosen to examine the retrofit effects for the roof plane. Horizontal shear test were carried out in order to obtain the relationship between the applied load and deformation angle and fracture mode. The second part deals with static pushover analysis of the full-scale roof specimens. Results between experimental test and static pushover analysis are presented and discussed in this paper.
DOI: 10.12755/isec.res.2016.141
title: Vibration Properties of Traditional Masonry Walls of CORTES Church

description: The Santo Niรฑo Church in Bohol Island was partially damaged in the Bohol Earthquake in October 2013. In this study, we investigated the structural property of the Santo Niรฑo Church to understand the vibration characteristics of Philippine masonry constructions by checking the main damage and conducting measurement surveys and microtremor measurement on the structure and ground. The major findings of this study can be summarized as follows: (a) Collapsed walls, peeling wall stone, corner deformation, and collapsed ceiling were the main damages that were observed. The collapsed wall was measured, and the make-up and material thickness of the wall was verified. (b) By performing microtremor measurements on the walls, the vibration property of the church, such as the natural frequency and vibration mode of the longest wall A was clarified. The 1st natural frequency of the longest wall A is the lowest.