14 research outputs found
Level of Acceptance Towards Industrialised Building System (IBS) In Malaysia
Construction practices towards conventional method is still being practiced widely even there were many researchers have done the studies on the inefficient of that method. On the other view, innovative construction had been the solution to improve the construction process flow. The need for innovation in construction industry is to enhance the efficiency for the success of project delivery. This could change the paradigm of norm construction practice which depends on conventional methods and a lot of non-value adding activities occur on that process flow. Industrialised Building System (IBS) is a method introduced to Malaysian construction players and it seem significance to the industry. This concept creates a new improvement for the successes of construction project by emerging techniques and materials in efficient way. This study shows the level of acceptance toward IBS concept comparing with conventional method. Interviews and questionnaires survey were done in getting data and analysed to get the factors relating time reduction, wastage and barriers of implementing it. Result shown the perception of construction players for IBS and it will provide to all parties the credits in choosing IBS concept for the project
Time Impact of Scheduling Simulation for High Rise Building
Although the long-introduced Industrialised Building System (IBS) has promised to solve and improve the current construction method and scenario in our country, but the IBS method has not gained enough popularity. One of the reasons is due to lack of research works done to quantifying the benefit of IBS especially in construction time saving. In lieu with such scenario, this study conducted to quantify evidence of time saving in IBS application. The methodology adopted for this study is by modelling the construction process for high-rise residential building for both conventional and IBS with shared more a less the same nature and size of the structure. The model was developed using Primavera (P3) project planning software. The comparison was made by comparing selective building components for both method of construction. Different high-rise residential projects have been selected for this study. The result of the study clearly indicated that sufficient time saving can be archived. Also from this study shown not all IBS components can improved to the overall construction duration, however by adopting IBS components can improve and expedite the construction of 18 stories residential building from the point of departure of the project throughout of the whole of project’s with a total 405 days or 42% the time saving
Axial and Flexural Load Test on Untreated Bamboocrete Multi-Purpose Panel
In this study, the axial and flexural strength of lightweight concrete panel reinforced with untreated bamboo describe as bamboocrete multi-purpose panel was investigated. Bamboo is a low cost, abundantly ready available and sustainable material used to carry load. In this research, bamboo is used to reinforce lightweight concrete to form a load bearing panel. From the test conducted, design axial strength of the panel can be up to 100kN (10 ton). The 1500 mm length, 500 mm wide, and 125 mm thick, bamboocrete panel then were subjected to four-point bending and achieved ultimate bending strength of at least 25 kN. The bamboo used in the concrete panel greatly contributed to the bending strength of the panel. Upon removal of the load, the bamboocrete panel return to almost its original form, showing flexibility and ductility of the panel
Preliminary experimental study on effectiveness of aquatic vegetation on sediment transport capacity
Vegetation affects sediment transport by obstructing the flow and changing the turbulence characteristics. Common
sediment transport equations are not applicable to situations with submerged vegetation. A laboratory experiment was
carried out in which flow, vegetation, and sediment transport were measured in an open channel model with a 240 cm
long section of 50 cm high x 50cm width with submerged vege-tation in a sand bed. Measured data from various
vegetation density and height were analyzed to obtain estimates of the trapping efficiency. Results show an increment of
the trapping efficiency with 86.7% and 94.2% reduction in sediment concentration compared to a case without
vegetation
Review of Big Data integration in construction industry digitalization
The 2030 agenda for sustainable development has embraced the importance of sustainable practices in the construction industry. Parallel to the Industry revolution 4.0, the construction industry needs to keep pace with technological advances in data management to keep pace with the revolution through the ability to process and extract value from data. This phenomenon attracts the requirement of Big Data (BD). The construction industry deals with large volumes of heterogeneous data, which is expected to increase exponentially following an intense use of modern technologies. This research presents a comprehensive study of the literature, investigating the potential application of BD integration in the construction industry. The adoption of such technologies in this industry remains at a nascent stage and lags broad uptake of these technologies in other fields. The Construction Industry is driving to boost its productivity through the implementation of data technologies, hence, significant research is needed in this area. Currently, there is a lack of deep comprehensive research on BD integration applications that provide insight for the construction industry. This research closes the gap and gives an overview of the literature. The discussion presented the current utilization, the issues, and ways for potential works along with the challenges companion with the implementation
Innovation in Lean Thinking to Achieve Rapid Construction
Lean thinking holds the potential for improving the construction sector, and therefore, it is a concept that should be adopted by construction sector players and academicians in the real industry. Bridging from that, a learning process for construction sector players regarding this matter should be the agenda in gaining the knowledge in preparation for their career. Lean principles offer opportunities for reducing lead times, eliminating non-value adding activities, reducing variability, and are facilitated by methods such as pull scheduling, simplified operations and buffer reduction. Thus, the drive for rapid construction, which is a systematic approach in enhancing efficiency to deliver a project using time reduction, while lean is the continuous process of eliminating waste, meeting or exceeding all customer requirements, focusing on the entire value stream and pursuing perfection in the execution of a constructed project. The methodology presented is shown to be valid through literature, interviews and questionnaire. The results show that the majority of construction sector players unfamiliar with lean thinking and they agreed that it can improve the construction process flow. With this background knowledge established and identified, best practices and recommended action are drawn
Strontium aluminate compound as road line materials application
Road line marking are used as a mean of controlling traffic and road user safety. It is very significant on any roads and
intersections as they promote road safety. They highlight a harmonious flow of traffic along guided paths of travel. The
objectives of this study are to investigate the properties of road line materials and examine the illuminance properties
of glow in the dark powder applied in road marking materials. The use of photoluminescent glow-in-the-dark material
was tested in the lab for its suitability (luminosity and the glow duration). The methods involved are selection of suitable
type of glow in the dark materials, selection of optimum mixing ratio of the glow in the dark powder with thermoplastic
powder, and finally analyzed for the properties of the type of the material chosen. The fine granular strontium aluminate
compound, SrAl2O4 was selected as the most suitable type of glow in the dark material. Based on the laboratory analysis,
the optimum ratio of the glow in the dark material to be used with thermoplastic powder is 55% of total mix volume. The
average visible light emission period is in acceptable range of 20 m. This is a suitable distance to implement the road
line because of the high visibility on the road during dark or night
High tensile bollard structure using macro synthetic fiber
The usage of bollard is very important in protecting buildings. It can prevent vehicles from passing through the building.
But the public now is less sensitive about the use of bollards. They assume the use of bollard is wasteful and for aesthetic
only. Therefore, most buildings did not install bollards to protect the building. Besides that, there are also mounted
bollards installed that are inappropriate to that place. For example, some bollards installed around buildings are not
concrete type that can withstand strong impacts. Furthermore, some important and historic buildings need to install an
explosive-proof type of bollard as building protection. The methods used for this research were non-destructive test and
destructive test. Non-destructive test is slump test and destructive tests are compression test, tensile test, flexural test,
and air blast test. Seven mix were used and tested in this research. From the compression test result, it shows that
concrete mixed with 0.5% of macro synthetic is much stronger than control sample and other mixtures. From the tensile
test, it shows that the control sample of the concrete achieved tensile strength of 3.48 N/mm2 while the mixed concrete
with 0.5 % mix of macro synthetic fiber gave higher tensile strength. The flexural test shows that the concrete mixed with
percentage ratio of 0.5%, 1.0%, and 1.5% of macro synthetic fiber gave higher strength than the control sample which
is only 2.77 N/mm2. Based on experiments that have been carried out, it can fulfil objective one, which is to evaluate the
type of blast safety for building envelope with the concrete bollard grade 30. Quality of concrete in terms of strength,
tensile, and flexure of the proposed material with 0.5% of macro synthetic fiber can produce the same quality and meets
the quality grade C30 concrete
Preliminary investigation of the effect of surcharge load and distance on non-homogenous man-made slope
Slope failure is a natural disaster that involves the movement of ground and rock under the influence of gravity. There
are several factors influencing slope stability, including the excessive surcharge load imposed on the top of the slope.
This study performs slope stability analysis to evaluate the performance of a non-homogenous man-made slope
constructed on the UPNM campus. The methodology of this research comprises two parts. The first part is laboratory
test, and the second part is simulation work. The laboratory tests conducted to determine the soil properties are sieve
analysis, permeability test, and direct shear test. The limit equilibrium method using the SlopeW software is employed
to determine the effect of imposing a gradually increasing surcharge load on the man-made slope from a varying
distance. The value of Factor of Safety (FOS) and critical slip surface formation obtained using SlopeW were used to
determine the maximum load carrying-capacity before failure. The results showed that the FOS decreased with an
increasing surcharge load. However, the FOS increased as the distance of the load increase. Further analysis was
carried out to enhance the stability of the slope. By reducing 40% of slope height, the stability of slope is increased to
44%. It is also suggested that no activity or development should be carried out on the slope crest to prevent slope failure
occurrence in the future