DEVELOPMENT AND CHARACTERIZATION OF A COMPOSITE MATERIAL REINFORCED BY PLASTIC WASTE: APPLICATION IN THE CONSTRUCTION SECTOR

In the present study, the fabrication of an Al-based metal matrix composite material obtained directly from the melting of the aluminium used beverage cans in a modified rheocasting process is presented. The analysed operational condition is the shear rate applied to the bath and its influence on the properties of the obtained samples. Additionally, samples were heat treated at two different times. The characterization of the phases obtained in Al-based MMC was made by means of metallography, scanning electron microscopy with energy dispersive spectroscopy and electron microprobe with wavelength dispersion spectroscopy. The results show that some constituents were formed during the fabrication process of the MMC, mainly Al6(Fe, Mn), which are partially transformed during the heat treatment. Additionally, samples were evaluated using dynamic mechanical analysis, and the results suggest that the obtained MMC could have very good mechanical properties, similar or superior to the aluminium alloys commonly used for structural applications such as 6XXX family.

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Development and Characterization of Teflon-Copper Composite Material

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.778.225 ◽

2018 ◽

Vol 778 ◽

pp. 225-229

Author(s):

Imran Hamid ◽

Abdul Rauf ◽

Faisal Nasim ◽

Muhammad Siddique ◽

Adnan Gul

Keyword(s):

Composite Material ◽

Hot Isostatic Pressing ◽

Solid Lubricants ◽

Powder Metallurgy Technique ◽

Covalent Bonds ◽

Secondary Bonds ◽

Three Samples ◽

Commercial Applications ◽

Copper Composite

Composites are the combination of materials that are mixed together to achieve specific structural properties. Teflon (Polytetrafluoroethylene PTFE) consists of long-chain molecular structure. Its monomer consists of two carbon atoms each of them having flourine atoms attached. Bonds within each chain are strong covalent bonds where as the secondary bonds between two chains are weaker. By raising temperature, the distance between the chains increases providing good adjustment of the atoms of other materials due to anisotropy of its mechanical properties. Powder metallurgy technique using hot isostatic pressing, a hybrid densification process in which pressure and temperature are applied at the same time, has been used to develop a teflon-copper composite material. Three samples were prepared by changing the teflon-copper composition as 60:40%, 65:35% and 70:30% by weight. Commercially available powders of teflon and copper of grain size ~ 40 μm was used. The aim to develop this type of material was to increase its density (~ 4 g/cm3), and hardness. The commercial applications of such type of composite material are solid lubricants, sleeves, bearings etc. In this paper the effect of composition on hardness, tensile strength and surface roughness is studied.

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Fabrication and Characterization of Jute Kenaf and Coir Fiber Composite Material

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2019.12143 ◽

2019 ◽

Vol 7 (12) ◽

pp. 894-898

Author(s):

Surnila Vijay Kumar

Keyword(s):

Composite Material ◽

Fiber Composite ◽

Coir Fiber ◽

Fiber Composite Material ◽

Fabrication And Characterization

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Business Risk and Project Management in Civil Construction Branch

System Safety Human - Technical Facility - Environment ◽

10.2478/czoto-2019-0042 ◽

2019 ◽

Vol 1 (1) ◽

pp. 324-331

Author(s):

Marek Winiarski ◽

Mariusz Urbański ◽

Riffat Faizan

Keyword(s):

Project Management ◽

Construction Industry ◽

Construction Sector ◽

Business Risk ◽

Final Phase ◽

Economic Space ◽

Initial Stage ◽

Time Frames ◽

Final Effect

AbstractProject management is general planning, coordination and inspection of the project, from the initial stage all the way to final phase, its purpose is an accomplishment of the accepted task and creation of the functional final effect, without exceeding established costs, time-frames and fulfillment of required standards of the quality. The present article was devoted to the issue of the project management in the construction sector in order to reduce the business risk. The study is based on literature examinations with an own methodological solution for project management in the construction industry. After introducing a set of definitions of the project and describing the concept of project management, a characterization of the project management in the construction industry and its effects in the economic space were described

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