Journal of Construction Research
EISSN : 2630-5089
Current Publisher: Bilingual Publishing Co. (10.30564)
Total articles ≅ 22
Latest articles in this journal
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i2.2823
3D printing with concrete is a promising new method for rapid, low cost construction. The flexural strengths for reinforced/unreinforced and 3D printed/cast concrete Warren trusses were tabulated and the failure mechanisms were reported. The types of reinforcement used were rebar(basalt and steel), and mesh (basalt and aramid). The effect of loading geometry and loading speed was measured for basalt mesh and aramid mesh composite, respectively. Due to the expected variation in flexure between samples, it cannot be said whether small differences for various tests are significant. Variation stems from a microscopically uneven surface and random inhomogeneities in the bulk of the tested material which act as a microcrack catalyst and propagator. Since the tested beams are short specimens the numerical findings of other studies will vary based on the intended design. This paper is intended to assess the performance of various reinforcements in a qualitative sense by comparing basalt reinforcement with other reinforcements. It was found that cast beams tolerated deflection better but had a similar flexure strength compared as the printed beams. The steel and basalt rebar reinforced beams had the highest flexure strengths where the traditional steel rebar reinforcement outperformed the basalt in flexure by 36% and the basalt outperformed the steel in deflection by 40%. The basalt mesh outperformed the cast and printed unreinforced bars by a small margin but had only 25% of steel rebars’ deflection at maximum flexure strength. The aramid mesh tolerated the biggest deflection out of any sample at 2.26 cm.
Journal of Construction Research, Volume 3; doi:10.30564/jcr.v3i1.2960
Design briefing plays a crucial role to the success of a building project. Some new methods of design briefing have been developed recently, but rarely integrated with Building Information Modelling (BIM). This paper presents a feasibility study of implementing BIM in the design briefing and develop a conceptual system framework to present possible functionalities and processes of BIM-based design briefing. This study started with a series of the interviews with professionals in the industry as well as academics in various universities in the UK. A thematic analysis has been carried out to analyse the interview transcripts. The development of conceptual system framework following the software engineering method presents the major functional modules and relevant datasets of an BIM-based design briefing system which identified in the interviews. The paper also discusses on both the benefit and the potential difficulties of BIM-based design briefing, although 93 % of the interviewees agree that BIM technology should be adopted in design briefing to improve the quality of design briefing process and to involve other stakeholders and POE data in design briefing.
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i2.2760
There are frequent failures in the project delivery in time and increasing the waste in Oman construction industry. Lean Construction (LC) principles which is lean thinking in design and construction process may be a possible solution. Hence, the paper is aimed on exploring the status of the LC practices and its impact on Omani Construction Industry (OCI). The paper presents barriers, potential benefits, and the measures of suitability and acceptability of LC principles. A quantitative research approach was adopted and research data was collected using an online questionnaire survey in Oman. The data was analysed and results are presented in tables and charts followed by critical discussions. The survey found that one-third of the construction professionals have a good awareness and half of then having a higher level awareness about LC practices. More than one third of the construction organisations are adopting LC principles with a high consensus on the suitability and acceptability, and they recognised that time commitment are necessary for the successful implementation and achieve benefits. The study concludes that the reduction in project delivery time and construction at site waste is the key advantage of implementing LC priciples in design and construction stages in the omani construction industry.
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i2.2863
The aim of this paper is to present the design and specifications of an integrated Delay Analysis Framework (DAF), which could be used to quantify the delay caused by the Risk Factors (RFs) in Oil and Gas Pipelines (OGPs) projects in a simple and systematic way. The main inputs of the DAF are (i) the potential list of RFs in the projects and their impact levels on the projects and the estimated maximum and minimum duration of each task. Monte Carlo Simulation integrated within @Risk simulator was the key process algorithm that used to quantify the impact of delay caused by the associated RFs. The key output of the DAF is the amount of potential delay caused by RFs in the OGP project. The functionalities of the developed DAF were evaluated using a case study of newly developed OGP project, in the south of Iraq. It is found that the case study project might have delayed by 45 days if neglected the consideration of the RFs associated with the project at the construction stage. The paper concludes that identifying the associated RFs and analysing the potential delay in advance will help in reducing the construction delay and improving the effectiveness of the project delivery by taking suitable risk mitigation measures.
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i2.2594
Now days, many research works are carried for all grades of concrete to make the concrete most economical and durable there by adding the supplementary cementitious materials and alternative replacement aggregates. In this research work deals with the experimental investigation of mechanical properties of the M30, M50 and M80 grade concrete by replacing the fine and coarse aggregate by foundry sand and crushed concrete waste respectively. Mix design procedures were followed as per IRC44:2017 guidelines and recommendation. Proper dosage of super plasticizer (SP) was maintained in the concrete to make it better performed. In this present investigation, a Poly Propylene fibre (PPF) of 0.3% by weight of the cement is used. Mechanical properties such as Compressive strength and Flexural Strength were determined by preparing the respective mould sizes for specific test and are cured for 7, 14 and 28 days and result obtained for respective days were tabulated and discussed.
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i1.2732
Over the past years, there has been an expanding intrigued in building refurbishment projects because of the alter in financial conditions and the accentuation on sustainable development. Increasing demand for building refurbishment projects will lead to an increase in organizational interactions in the construction works as building refurbishment works involve interactions among many different organizations and it can cause Inter-Organizational conflict (IOC) among organizations involved in projects. This paper adopted an Exploratory Factor Analysis (EFA) approach to analyses IOC in building refurbishment projects. For this study, a five-point Likert Scale was adopted to ensure the instruments of the study are reliable. The researcher ultimately sent questionnaires as a web-link and email invitation to 1050 construction firms and 733 architectural firms. The questionnaire sent to managers and professionals from construction and architectural firms in Malaysia. Finally, one-hundred-seventy-nine (179) refurbishment projects formed a database for this paper. The finding of this paper shows the IOC factors that contribute to the improve the performance of building refurbishment project can be conflict during the construction stage, conflict between the client and the consultant, task expectations, basic responsibilities, final duration, project’s goals, conflict between the client and the contractor, final cost, final quality, standards of behaviors, conflict between the contractor and the consultant, interference and conflict during the design stage.
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i1.2684
Lizardite rich peridotite has never been used to prepare ceramic specimens, especially in Morocco. For this raison, potential use of naturally abundant lazirditic material from the Rif domain, as a supply for ceramic industry, has been evaluated. The effects of lizardite addition to magnesite and dolomite mixtures on the thermomechanical properties of the calcined ceramics were also detailed. To achieve this target, natural lizardite, magnesite and dolomite samples were collected in ultrabasic Beni Bousra massif. Those raw samples were used for the synthesis of a forsterite-monticellite rich ceramics. Both raw and sintered samples were characterized by x-ray diffraction, scanning electron microscope and fourier transform infrared. The obtained results showed that both magnesite and dolomite were mainly composed of MgCO3 and CaCO3. In contrast, lizardite sample showed high amounts of SiO2, MgO and Fe2O3. An increased amount of lizardite in the initial mixtures enhanced mechanical and dimensional properties of the prepared ceramic specimens, and subsequently, the production of ceramics with the required technological properties. Thus, the preparation of Moroccan lizardite-based ceramics is technically feasible, economically justifiable and socially desirable due to the contribution to the economic growth of the raw materials sector, especially ceramic industry.
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i1.576
One of the best strategies for improving energy efficiency in any system is using the energy resources in the facilities properly. Using energy systems only when they are absolutely necessary is one of the best cost-benefit ratio strategies, i.e. the best energy saving strategy is, not using it.The aim of this paper resides on introducing a new Energy Management and Control System (EMCS), developed by the authors, which has been installed at the Universitat Politècnica de València. Alongside the paper, the architecture, the components and the installation cost analysis of the EMCS, as well as management actions implemented in the university and the obtained results are presented.Furthermore, this innovative system has been designed to improve demand response in energy systems by providing consumers with a tool for responding actively to energy demands, and also to provide all the different electrical market agents with a communication and business platform for exchanging information.
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i1.2694
In this study, an experimental study and numerical calculations using fiber model were conducted for four high-strength concrete shear walls with boundary columns under low cyclic load. The boundary column and shear wall were divided into fiber elements, and PERFORM-3D finite element analysis software was used to carry out push-over analysis on the test specimens. The results show that the finite element analysis results were in good agreement with the experimental results. The proposed analysis method could perform elasto-plastic analysis on the high-strength concrete shear wall with boundary columns without distinguishing the categories of frame column and shear wall. The seismic performance of high-strength concrete shear wall with boundary columns was analyzed using the following parameters: axis compression ratio, height to width ratio, ratio of vertical reinforcement, and ratio of longitudinal reinforcement in the boundary column. The results show that the increase in the axial compression ratio causes the bearing capacity of the shear wall to increase at first and then to decrease and causes the ductility to decrease. The increase in the height to width ratio causes the bearing capacity of the shear wall to decrease and its ductility to increase. The ratio of vertical reinforcement was found to have little effect on the bearing capacity and ductility. The increase in the ratio of longitudinal reinforcement in boundary column resulted in a significant increase in the bearing capacity and caused the ductility to decrease at first and then to slowly increase.
Journal of Construction Research, Volume 2; doi:10.30564/jcr.v2i1.2653
According to the container recycling institute, nearly a million plastic beverage bottles are sold every minute around the world. Plastic bottles are considered as an urban junk, however, it has shape characteristics which make them usable in construction in lieu of conventional bricks. This research promotes the use of recycled plastic bottles as eco-bricks by substituting it with the typical construction bricks. It evaluates the thermal performance of sand filled plastic bottle-walls in a comparative analysis with traditional composite brick walls. The thermal performance of the plastic bottle walls was evaluated through COMSOL® Multi-physics and the results are noted.