An implementation model for automated construction materials tracking and locating

2010 ◽  
Vol 37 (4) ◽  
pp. 588-599 ◽  
Author(s):  
Hassan Nasir ◽  
Carl T. Haas ◽  
Duncan A. Young ◽  
Saiedeh Nawabzadi Razavi ◽  
Carlos Caldas ◽  
...  
Keyword(s):  
Construction Projects ◽  
Power Plants ◽  
Emerging Technologies ◽  
Construction Materials ◽  
Materials Management ◽  
Implementation Model ◽  
Different Types ◽  
Industrial Projects ◽  
The Right ◽  
The Impact

Good materials management on large construction projects is critical for maximizing productivity and project performance. When key materials are temporarily lost, whole crews may be left idle and the project may be delayed. When key materials are completely lost, the impact can be enormous. In fact, one of the major problems in managing construction materials and equipment is tracking them in the supply chain and knowing their location on large job sites. Fortunately, location can now be automatically estimated within metres using emerging technologies. This paper proposes a general implementation model for automated construction materials tracking and locating on large industrial projects, such as refineries and power plants. It includes a methodology for determining what type of technology should be used for different types of projects and construction materials. It is based on an analysis of the capabilities of emerging technologies and on experience gained from implementing automated materials tracking prototypes on two large industrial projects. It is concluded that these technologies can produce substantial net benefits, if implemented properly on the right projects using the model described here.

FAKTOR PENANGULANGAN TERJADINYA WASTE PADA PROYEK KONSTRUKSI DI SURABAYA

EXTRAPOLASI ◽  
2020 ◽  
Vol 17 (2) ◽  
pp. 1-10
Author(s):  
Michella Beatrix ◽  
Nurul Rochmah ◽  
Gede Sarya ◽  
Pebru Dwijayanto
Keyword(s):  
Waste Management ◽  
Construction Projects ◽  
Positive Impact ◽  
Scale Construction ◽  
Small Scale ◽  
Construction Costs ◽  
Warehouse Storage ◽  
The Right ◽  
The Impact ◽  
Material Requirements

AbstractLarge and small scale construction projects have waste that cannot be predicted in advance, even the amount cannot be predicted directly, whether it is in large or small amounts. The existence of waste can have a significant impact that can affect construction costs. Waste can have both negative and positive impacts. Good waste management will have a positive impact on the company in terms of cost, even time, and quality, but if the waste that occurs cannot be handled or managed properly it will harm the company in terms of cost, time, and even in terms of quality. In this case, the party that always gets the impact of the waste is the contractor.This study focuses on mitigating the occurrence of waste that is how to minimize it. Thisstudy uses the distribution of questionnaires to the contractor in Surabaya. The results of this study are 5 item indicators on how to minimize the highest ranking. The 5 items are Updating material requirements, Mixing, transporting, and placing concrete at the right time, Increasing the competence and expertise of labor, Provision of good and adequate material/warehouse storage facilities, and accurate material measurement.  Abstrak Proyek konstruksi dalam skala besar maupun kecil, memiliki waste yang tidak dapat diprediksi sebelumnya, bahkan jumlahnya pun tidak dapat diprediksi secara langsung, apakah itu dalam jumlah besar ataupun jumlah yang kecil. Adanya waste dapat memberikan dampak yang signifikan yang dapat mempengaruhi biaya konstruksi. Pada dasarnya waste dapat memberikan dampak negatif maupun positif. Pengelolaan waste yang baik akan memberikan dampak positif bagi perusahaan dalam segi biaya, bahkan waktu dan mutu, namun apabila waste yang terjadi tidak dapat diatasi atau dikelola dengan baik maka akan memberikan dampak negatif bagi perusahaan dalam segi biaya, waktu bahkan dalam hal mutu. Dalam hal ini pihak yang selalu mendapatkan dampak dari adanya waste adalah pihak kontraktorPenelitian ini memfokuskan pada faktor penanggulangan terjadinya waste yaitu cara meminimalisirnya. Penelitian ini menggunakan penyebaran kuisioner kepada pihak kontraktor di Surabaya. Hasil dari penelitian ini adalah 5 item indicator cara meminimalisir yang memiliki ranking tertinggi. 5 item tersebut adalah Updating kebutuhan material, Mencampur, mengangkut dan menempatkan beton pada waktu yang tepat, Meningkatkan kompetensi dan keahlian tenaga kerja, Penyediaan fasilitas penyimpanan material/gudang yang baik dan memadai, dan Pengukuran bahan yang akurat.

scholarly journals The Awareness Of ICT Implementation For Materials Management In Construction Projects

2011 ◽  
pp. 159-168
Author(s):  
N. B. Kasim ◽  
Peniel Ang Soon Ern
Keyword(s):  
Construction Projects ◽  
Early Stage ◽  
Construction Materials ◽  
Handheld Devices ◽  
Research Approach ◽  
Materials Management ◽  
Structured Interviews ◽  
Ict Implementation ◽  
Management Processes ◽  
Main Barrier

Construction materials usually constitute a major portion of the total cost in a building construction project. Despite the potential benefit of ICT, convincing construction organisations to embrace its use and implementation has proved a difficult task. This research seeks to identify the implementation of ICT in construction materials management processes and to investigate on the acceptance of contractors for ICT transformation to the materials management in construction projects. In relation to that, current constraints that are found hindering the acceptance of ICT in materials management processes are also identified. A triangulation research approach which consists of standard derived questionnaires, semi structured interviews with class A contractors and review of previous research were conducted. The findings from this research reveal that the implementation of ICT in the materials management for construction projects in Malaysia is at early stage. Microsoft Excel Spreadsheet and handheld devices are found to be the common ICT tools adopted in the materials management processes. Meanwhile, there is only an average level of acceptance towards the transformation of ICT implementation in the construction materials management. The main barrier is found to be the cost involvement at the initial stage or overall implementation of ICT in the materials management processes. Finally, it can be concluded that there is a lack of awareness towards the ICT implementation of materials management in the construction projects.

PRESERVING TRADITIONAL CONSTRUCTION TECHNIQUES AND MATERIALS AS AN ANSWER TO FUTURE ENERGY-FUEL CRISIS

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Enrique Villacis ◽  
Maria Lorena Rodriguez ◽  
Cynthia Ayarza
Keyword(s):  
Construction Projects ◽  
Construction Materials ◽  
Scientific Development ◽  
Construction Techniques ◽  
Design Build ◽  
The Future ◽  
Class Room ◽  
Traditional Construction ◽  
Approach Working ◽  
The Impact

Once a highly skilled and experienced professor told us: the future of architecture is in its handcraft past. We were not able to completely understand him at that time. Looking forward to the future where architecture and engineering professionals will perform facing energy fuel crisis and global warming, an endogenous approach, working with what is available, may be a subsistence tool. Preserving and further development of traditional construction materials, methods and techniques now has become a must, not form the cultural heritage stand point but as a survival instrument. In this paper we will analyze three different roofing systems, two of them ancestral techniques; toquilla leaf roof and straw thatch roofs, using them in real contemporary construction circumstances by incorporating them into the professional life through real construction projects and the educational system through Con lo que hay, a design-build class room in architectural school in Ecuador, facing them with conventional zinc metal roofing. This study will show the impact of recovering these techniques and materials within the academic, the professional, scientific development and on the local economies.

scholarly journals CLASSIFICATION AND OCCURRENCE OF DEFECTIVE ACTS IN RESIDENTIAL CONSTRUCTION PROJECTS

2014 ◽  
Vol 20 (2) ◽  
pp. 175-185 ◽  
Author(s):  
Hamad A. Aljassmi ◽  
Sangwon Han
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Residential Construction ◽  
Sequence Of Events ◽  
Different Types ◽  
The Impact ◽  
Construction Defects

Defects can have a significant impact on construction performance. Numerous studies have attempted to identify their root causes, contending that the prevention of defects could be achieved by eliminating the root causes. Yet, their direct causes also need to be considered in order to identify the sequence of events leading to defects. This study aims to classify the defective acts that are directly linked to the occurrence of a defect, in order to provide insights about the nature and the impact of different types of direct causes. The study involves investigation into 272 defects from 81 disputes that occurred in the Dubai residential construction industry in 2009. Results from this study reveal that the majority of construction defects are driven by a violation of practices or workers’ lack of skill and competence. While it is difficult to prevent deliberate violations, increased effort toward growing skills and competencies would be effective in reducing defects, and therefore improving construction performance. Also, classification of defective acts is envisioned as a platform toward a more thorough causal tracking of construction defects, facilitating the identification of latent conditions resulting in defects.

scholarly journals Categorization of Fibers and their Influence on Concrete Properties

2019 ◽  
Vol 8 (4S2) ◽  
pp. 33-36
Keyword(s):  
Carbon Fibers ◽  
Natural Fibers ◽  
Synergetic Effect ◽  
Fiber Reinforced Concrete ◽  
Hybrid Fibers ◽  
Literature Reviews ◽  
Different Types ◽  
The Right ◽  
The Impact

Incorporation of the different types of fibers in the concrete composite has become a conventional approach in the recent era. The culminating enhancement of various properties of the cement and concrete composite by the instigation of the fibers and their feasibility to the various environmental conditions make them stand out in the present scenario. Furthermore, the hybrid fibers in various combinations have a synergetic effect which causes the advancement of two more parameters of the concrete composites. This paper lines up the transformations in the physical, chemical and the mechanical properties of fiber reinforced concrete. This provides the abbreviation of the classification of fibers and the impact of mono fibers and hybrid fibers as well in the concrete composites. Thus the different literature reviews throw light on the necessity, choosing the right fiber and their consecutive effects on the type of concrete composite used. Steel fibers and polypropylene fibers were noted to improve the mechanical strength to an extend whereas glass and carbon fibers tend to have the same effect in lower level which had also become a hazardous one owing to the various chemical reactions. Though the natural fibers have good durable properties, it is used less due to its degradable nature

scholarly journals IDENTIFICATION OF SECTORAL LOGISTICS SERVICE QUALITY GAPS BY APPLYING SERVQUAL METHOD

Transport ◽  
2020 ◽  
Vol 35 (4) ◽  
pp. 419-434
Author(s):  
Ieva Meidutė-Kavaliauskienė ◽  
Virgilija Vasilienė-Vasiliauskienė ◽  
Aidas Vasilis Vasiliauskas
Keyword(s):  
Service Quality ◽  
Competitive Edge ◽  
Logistics Service ◽  
Logistics Services ◽  
Different Types ◽  
Business Entities ◽  
The Right ◽  
Logistics Service Quality ◽  
The Impact

Today, simply delivering a product to the right place at the right time is no longer enough. Customers demand more; they demand the full suite of logistics services. Customers thus seek higher-value and additional services, and more, which enable them to compete. Thus, the problem underlying analysis is customers’ growing dissatisfaction with existing services and their quality. Quality of service no longer gives business entities a competitive edge. It is vital for companies to have different activities, to operate in different branches of the economy, and to work with different types of goods. However, despite these differences, they all want to obtain maximum satisfaction from logistics services. With this in mind, the purpose of this article is to present a study examining the impact of logistics service quality on the satisfaction of companies working with different categories of goods Results indicated that different logistics service users do not have the same requirements for logistics service quality. Moreover, it was proved that SERVQUAL method is suitable for identification of sectoral value gaps, which can be applied in practice assuring competitive advantage.

The removal of As(V) ions by lime-modified fly ash and reuse of the exhausted adsorbent as an additive for construction material

2020 ◽  
Author(s):  
Milica Karanac ◽  
Maja Đolić ◽  
Vladimir Pavićević ◽  
Aleksandar Marinković
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Low Cost ◽  
Construction Material ◽  
Thermal Power ◽  
Construction Materials ◽  
Practical Applications ◽  
The Impact ◽  
By Products ◽  
Modified Fly Ash

<p>Coal thermal power plants (TPP) actively generate numerous solid combustion by-products, including fly ash and bottom ash. These TPP by-products have already found use in a variety of civil engineering applications, such as a substitute for sand and gravel in structures, as well as a binding component in certain types of cement (generally, concrete and masonry). Furthermore, such by-products have become a subject of increasing interest in environmental engineering as a low-cost and effective adsorbent for the removal of organic pollutants and heavy metals from wastewaters.</p><p>In order to minimize the impact of material cost, novel solutions for the development of a high capacity and long-term adsorbent have provided a high performance adsorbent for practical applications. This study is focused on the use of modified fly ash (MFA) activated by lime (Ca(OH)<sub>2</sub>) as an effective and low-cost adsorbent for the removal of As(V) ions. The adsorption capacity of the MFA adsorbent was found to be 35.40 mg g<sup>-1</sup>, while the kinetic and thermodynamic parameters indicated a spontaneous and endothermic process. Due to the low desorption potential of the exhausted adsorbent (MFA/As(V), their effective further material reuse was established to be feasible. The reuse of the exhausted adsorbent was obtained through pozzolanic MFA particles and Ca(OH)<sub>2, </sub>thereby formulating a construction material of a cementitious calcium-silicate hydrate. The toxicity leaching test (TCLP) and mechanical properties of the new construction material containing exhausted MFA (CM-MFA/As(V)) confirm its safe use in the laboratory as well as its semi-industrial application.</p><p>The specific objectives of this study have been: (i) to improve the adsorption performance of the MFA; (ii) to evaluate the material’s equilibrium, as well as the process’ kinetic and thermodynamic aspects, including  estimating its limiting step; and (iii) to investigate the possible reuse of the exhausted adsorbent in the production of construction materials. The kinetic data were successfully fitted by a pseudo-second-order equation and the Weber-Morris model. The metal-desorption experiments performed on the exhausted FA and MFA indicate a low recovery of the selected pollutants.</p><p>The major outcome of this study, indicates that double-valorization of fly ash opens new directions for waste management toward reuse in effective practical applications; i.e., for actual water –purification systems, as well as in the production of construction material.</p>

scholarly journals Advocacy science and fisheries decision-making

2011 ◽  
Vol 68 (10) ◽  
pp. 2007-2012 ◽  
Author(s):  
Jake C. Rice
Keyword(s):  
Decision Making ◽  
Peer Review ◽  
Ecological Economic ◽  
Privileged Position ◽  
Trade Offs ◽  
Science Advice ◽  
Different Types ◽  
The Right ◽  
Governance Processes ◽  
The Impact

AbstractRice, J. C. 2011. Advocacy science and fisheries decision-making. – ICES Journal of Marine Science, 68: 2007–2012. Science advice is supposed to meet idealistic standards for objectivity, impartiality, and lack of bias. Acknowledging that science advisors are imperfect at meeting those standards, they nonetheless need to strive to produce sound, non-partisan advice, because of the privileged accountability given to science advice in decision-making. When science advisors cease to strive for those ideals and promote advocacy science, such advice loses the right to that privileged position. There are temptations to shape science advice by using information that “strengthens” the conservation case selectively. Giving in to such temptation, however, dooms the advice; science advice becomes viewed as expressions of the biases of those who provide it rather than reflecting the information on which the advice is based. Everyone, including the ecosystems, loses. There are ways to increase the impact of science advice on decision-making that do not involve perverting science advice into advocacy: peer review by diverse experts, integrating advice on ecological, economic, and social information and outcomes, and focusing advisory approaches on risks, costs, and trade-offs of different types of management error. These approaches allow the science experts to be active, informed participants in the governance processes to aid sound decision-making, not to press for preselected outcomes. Everyone, including the ecosystems, wins.

scholarly journals Waste Co-Combustion with a Conventional Fossil Fuel on Power Plants

2020 ◽  
Vol 329 ◽  
pp. 03081
Author(s):  
Roman Bezuglov ◽  
Vladimir Papin ◽  
Evgeniy Dyakonov ◽  
Elena Veselovskaya ◽  
Vladimir Filimonov
Keyword(s):  
Power Plants ◽  
Organic Waste ◽  
Fossil Fuel ◽  
Thermal Capacity ◽  
Wide Spread ◽  
Different Types ◽  
The Future ◽  
Low Efficiency ◽  
The Right ◽  
Shed Light

The paper has to shed light into understanding the waste useful and it has an aim to review about possibilities how to using different types of waste to generate energy. The paper highlighted the terms, that renewables it isn’t energy of the future but waste is – at least the future for the next hundred years. It’s very important to use waste by the right way, because of some current methods waste using have a low efficiency. There are several ways of using waste with pretreatment. Nowadays pretreatment includes torrefaction, pelletization, torrefaction of pellets (TOP) and wide spread around the world. It is necessary to compare economic indicators when you want to using some scenario. Using of waste can help us to reduce the pollutions and decrease load to an ambient. There are some advantages to using organic waste to generate energy – it can be considered as a fuel. But it also consists some negatives aspects such as low efficiency due to low thermal values (i.e. specific thermal capacity). Hence, waste using not so unequivocally as it seems at first sight. Thus, here is our understanding for this problem.

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