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Emas Essay

  • Submitted by: kvsrija
  • on January 27, 2013
  • Category: Miscellaneous
  • Length: 599 words

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Below is an essay on "Emas" from Anti Essays, your source for research papers, essays, and term paper examples.

AEROCONCRETE ARRESTOR BEDS
          B.Tech, Mechanical (3/4),
    Gavatri Vidya Parishad College Of Engineering,
Madhurawada, Visakhapatnam.
                                                                By R.krithika
P.Sri HariTeja
Abstract:
Aeroconcrete (or Aerated Concrete) are manufactured by adding
Aluminium powder or a foaming agent (hydrolyzed protein or a resin) which
reacts with the concrete forming air bubbles or gases that are entrapped in it.
These are responsible for remarkable properties of aeroconcrete. The aerated
concrete outperforms conventional concrete by the advantages of lightweight,
heat preservation, sound isolation, high strength to weight ratio etc. The strength
of the aeroconcrete can be altered by using foaming agents of different
densities. Aeroconcretes have become the important part of new-type
construction materials, and possess bright development future.
In this paper we shall discuss the extensive use of aeroconcretes
In constructing arrestor systems (EMAS). An Engineered Material Arresting
System provides enhanced runway overrun safety for commercial airports.
Aircraft can do overrun the ends of runways, sometimes with disastrous
consequences. Arrestor Beds provide a safety device for quickly arresting the
movement of vehicles such as airplanes and motor cars by forming a retarding
bed of crushable material made of aeroconcrete. The strength of the foamed
material used must be such that the wheels of the vehicle running off the track
and on to the bed will crush the foamed material, exerting a drag on the wheels
thereby slowing the vehicle down. Aerated concrete having a density between
240-961 kg/rrr' and compressive strength of 40- 200 psi is quite suitable. The
decelerating effect may also be increased with depth of penetration into the
aerated bed by employing foams of different densities and compressive
strengths at different parts of the bed. Damage to aircraft...

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