Simulation of Penetration of Steel Projectile with Ogive Nose into the Sandwich Target with Foam, Polystyrene and Poly Rubber Core Using Autodyne Software

2015 ◽  
pp. 1-11
Author(s):  
Ali Fazlipur ◽  
Hossein Khodarahmi
Keyword(s):  
Foam Polystyrene

Use of Foam Polystyrene Waste in the Conditions of a Reinforced Concrete Products Factory

2020 ◽  
pp. 49-52
Author(s):  
S.E. YANUTINA ◽  
Keyword(s):  
Reinforced Concrete ◽  
Precast Concrete ◽  
Expanded Polystyrene ◽  
Insulation Material ◽  
Design Strength ◽  
Foam Polystyrene ◽  
Secondary Use ◽  
Concrete Blocks ◽  
Polystyrene Waste ◽  
Factory Laboratory

The relevance of research in the factory laboratory of JSC «198 KZHI», which is part of the HC GVSU «Center», is dictated by the need to dispose of foam polystyrene waste that occurs in large quantities when producing the precast concrete. In the production of three-layer external wall panels, polystyrene heatinsulating plates of the PPS 17-R-A brand are used as an effective insulation material. The secondary use of PPS 17-R-A for its intended purpose, as a heater, is not possible. The volume of foam polystyrene produced varies from 25 to 45 m3 per month. Utilization (disposal) of foam polystyrene waste is an expensive undertaking. Its use as a filler in the production of expanded polystyrene blocks was tested in the factory’s laboratory to produce foam polystyrene concrete with specified physical and mechanical characteristics. The results of testing of expanded polystyrene concrete of classes B2.5 and B 7.5 are presented. It is shown that under the conditions of the reinforced concrete factory technology, the production of polystyrene concrete blocks is possible with the achievement of the design strength. The information presented in the article is aimed at motivating specialists who produce recast concrete to the possibility of using foam polystyrene waste for low-rise construction. Keywords: foam polystyrene, ecology, energy efficiency, foam polystyrene concrete, foam polystyrene heat insulation plates, precast concrete.

scholarly journals FIRE TESTING OF THE BUILDING FACADE INSULATED WITH FOAM POLYSTYRENE/PUTŲ POLISTIRENU APŠILTINTŲ FASADO FRAGMENTŲ GAISRINIAI BANDYMAI

1999 ◽  
Vol 5 (5) ◽  
pp. 340-346 ◽  
Author(s):  
Albertas Nyderis ◽  
Romualdas Mačiulaitis
Keyword(s):  
Thermal Radiation ◽  
Functional Relation ◽  
Heat Radiation ◽  
Bottom Line ◽  
Fire Hazards ◽  
Testing Conditions ◽  
Foam Polystyrene ◽  
Building Insulation ◽  
Building Facade ◽  
Insulation Systems

In the past decade, construction business applied various heat insulating materials comprising a spectrum of properties according to their combustibility. Particular attention was paid to insulation materials related to fire hazards. The normative fire safety documents started to be drawn up in this country at the time when the process of building insulation had not been initiated yet. Therefore, there still exists a great need for assessing the fire hazards of building insulation systems. With the use of the experience of other countries new testing equipment for insulating building facade with foam polystyrene has been recently established. The equipment is loaded with a 2.4×2.0 meter wall fragment and 800×700 mm plate of electrical thermal radiation flow, as well as a gas burner and a device for taking the temperature. The theoretical bottom-line of these testing methods lies in the heat exchange between two parallel walls, one of which is much hotter. The calculation of the thermal radiation flow is presented in formula 1 and the theoretical basis is indicated in formulae 2–10. Formula 11 indicates the rates of the flame heat radiation flows. Formula 12 shows special testing conditions. In the course of testing the insulation systems, the geometrical quantities of violation zones of foam polystyrene have been determined, they have exceeded the calculations of the flow radiation plate of active heat several times. A strong functional relation between the thickness of foam polystyrene and the rates of violation zones (r xy =0.694) and a weak functional relation between the thickness of plaster and the rates of violation zones (r xy = −0.580) have also been defined. Formulas 13 and 14 describe the relations between the surface areas of the destruction, the thickness of the foam polystyrene and the thickness of the plaster. By taking the temperatures in the vertical axis of the geometrical centre of the wall fragment, it was determined that in the course of testing the temperatures become dangerous in relation to the combustibles (about 250°C). The tests indicate that favourable and stable testing conditions established. It is expedient to continue the tests with other types of building facade materials.

scholarly journals Evaluation of the Microorganism Adsorptive Abilities of Resins Containing Pyridinium Groups Prepared from Foam Polystyrene

2006 ◽  
Vol 17 (2) ◽  
pp. 135-141 ◽  
Author(s):  
Shigeru Morimura ◽  
Kai Liu ◽  
Toru Shigematsu ◽  
Tomonari Ogata ◽  
Takamasa Nonaka ◽  
...  
Keyword(s):  
Foam Polystyrene

The effect of foam polystyrene granules on cement composite properties

2005 ◽  
Vol 27 (1) ◽  
pp. 41-47 ◽  
Author(s):  
A. Laukaitis ◽  
R. Žurauskas ◽  
J. Kerien≐
Keyword(s):  
Cement Composite ◽  
Foam Polystyrene ◽  
Composite Properties

Effect of frequency and oscillation amplitude on moldability of alumina-foam-polystyrene bodies

Refractories ◽  
1973 ◽  
Vol 14 (3-4) ◽  
pp. 191-193
Author(s):  
Yu. P. Gorlov ◽  
V. N. Sokov ◽  
D. B. Min'kov
Keyword(s):  
Oscillation Amplitude ◽  
Foam Polystyrene ◽  
Alumina Foam

Nitrogen-doped porous carbon derived from foam polystyrene as an anode material for lithium-ion batteries

2020 ◽  
Vol 504 ◽  
pp. 144398 ◽  
Author(s):  
Jintao Huang ◽  
Yemao Lin ◽  
Muwei Ji ◽  
Guangtao Cong ◽  
Huichao Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Porous Carbon ◽  
Lithium Ion ◽  
Foam Polystyrene ◽  
Nitrogen Doped

scholarly journals THE INFLUENCE OF NATURAL CONVECTION ON THERMAL PROPERTIES OF BUILDING ENCLOSURE WITH POLYSTYRENE BOARDS/PUTŲ POLISTIRENO PLOKŠTĖMIS IZOLIUOTŲ PASTATŲ SIENŲ ŠILUMINIŲ SAVYBIŲ PRIKLAUSOMYBĖ NUO NATŪRALIOS KONVEKCIJOS

2000 ◽  
Vol 6 (4) ◽  
pp. 272-277
Author(s):  
Rolandas Samajauskas ◽  
Vytautas Stankevičius
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Building Envelope ◽  
Heat Losses ◽  
Building Structures ◽  
Insulating Materials ◽  
Foam Polystyrene ◽  
Air Gaps ◽  
Air Movement ◽  
Closed Structure

Building insulating materials with good insulation properties usually are porous, because they contain large amounts of air or other gas inside. The pore system can be closed, as in many cellular plastics, or open as in fibre materials. The mechanisms of heat transfer in porous material are: conduction in solid phase, radiation within material and conduction due to the gas confined in the insulation. In an open-pore material, like lightweight mineral wool, the transportation of heat can be further increased by air movement (convection) through the permeable material. Convection is impossible in a closed porous materials like polystyrene (EPS, XPS) boards. But heat losses can be increased by air movement if there are cracks between boards and other building envelope structures. The airflow velocity and direction may vary strongly due to the changing boundary condition. However, at the present time in Lithuania convection in insulating materials is considered as non-existent, when calculating heat transmission and designing building structures. Because of the lack of knowledge concerning air movement in external building structures, and how it is affecting the heat transfer, this investigation has been carried out. For research an equipment (Fig 2) was made, assigned for exploring both vertical and horizontal structures (height 2100 mm, width 1100 mm and thickness up to 300 mm). For reducing heat losses through the sides up to minimum, an equipment was built from slabs (thickness 150 mm). As the hot side of equipment gypsum board was applied to the surface of which 8 heat flow sensors and 9 thermocouples were attached. For maintaining constant and isothermal temperature of the surface of this partition (Θi, =+20°C), heating elements and ventilators were mounted inside the equipment. The cold surface of the equipment was of the same construction as the warm one only with the regulated slide valve with an area of 0,02 m2. It allows exploring the so-called not-ventilated structures. During the test, temperature was measured at different places and depths. The research was performed on the foam polystyrene plates of 3×50 mm of thickness with 3–5 mm air gaps. Measurements were conducted in the following sequence: Two basic measurements of closed structure were performed for constant values of temperatures Θe=0°C and Θe=10°C. In this case the structure was held horizontally and heat flow was directed from top to bottom. Therefore it could be assumed that heat was transferred by conduction and radiation. Measurements of the closed structure were performed on the equipment being in vertical position and for external temperature Θe=0°C and Θe=10°C. Measurements of the opened structure. The measurement carried out for the same external environment conditions, the ventilating orifice being opened. The results of laboratory experiments allowed to assess the heat losses of the enclosure being arranged in the form of wall with air gaps applying foam polystyrene slabs. Different types of structures being investigated are shown in Fig 1. The Nu numbers for closed and ventilated structures are presented in Figs 8 and 9. The research results could be applied to enclosures with hard type insulation too. Although the natural convection does not occur inside the ideal material, but it takes place inside enclosure with air gaps. Thus, actual U-value depends on structural solutions and air tightness on building envelope. If wind barrier is permeable, then air filtration through the structure may cause even critical values for heat losses.

Improve the thermal and mechanical properties of foam polystyrene by gebrile soil

2020 ◽  
Vol 27 (4) ◽  
pp. 8-12
Author(s):  
montajb Al-khodary ◽  
sabah AL-sibai ◽  
moaffaq Tellawi
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Thermal Insulation ◽  
Permissible Limit ◽  
Strength Increase ◽  
Thermal And Mechanical Properties ◽  
Polystyrene Foam ◽  
Natural Materials ◽  
Foam Polystyrene ◽  
Insulation Materials

n this research we tried to improve the thermal insulation efficiency of polystyrene foam by adding some natural materials. The gebrile soil was selected for several reasons, including abundance and ease of processing before the addition - There are many previous researches for soil treatment -. We have found at ratio 20%(The proportion of the soil in the compound) the coefficient of conduction is low and then rises after this percentage As for the absorption of water it increases by increasing the soil, but at this ratio the absorption is within the permissible limit according to the specifications required for the insulation materials and also compressive strength increase with the increasing of the soil ratio because of increasing of mechanical links between the polycarbonate and polystyrene particles and composite-material’s density increasing in general.

Sign in / Sign up

Export Citation Format

Share Document