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An elastomer is a polymeric substance obtained after vulcanization of rubber. Vulcanization is the process of improving the properties of rubber by heating with sulphur. A normal rubber is not useable as it becomes brittle at low temperature and sticky at high temperature. Charles Goodyear had been trying to 'cure' the rubber so that it could be used in all seasons. He tried to mix all kinds of things such as ink, black pepper, cheese and what not. But he couldn't succeed until he dropped a piece of rubber on stove accidentally.
To his surprise, he found that instead of melting the rubber piece hardened and remained pliable. It was found in the lab that it contained traces of sulphur. Goodyear perfected the process and named it 'vulcanization' after the Roman God of fire, 'Vulcan'.
Question Give a reason that why are high and narrow beams not desirable in concrete piers? Answer Supported on past experience in other, high and narrow beams after
What is the station at Point B? SOLUTION 3 Station at Point A = Sta 22+45 Station at Point B = (Sta 22+45) + 1028' = 2245'+1028' =3273' = Sta 32+73
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Explain the Erosion and Sedimentation Erosion: Removal of soil or other channel material caused by the rapid movement of water over the channel surface. The removed material
What is the rate of application of Prime coat over WBM
determine the maximum positive and negative shear shear
Verify the grain specific gravity In a specific gravity test, the weight of the dry soil taken is 0.66 N. The weight of the pyknometer filled with this soil and water is 6.756
Determine the thermal stress in the bar: A stepped bar made of aluminum is held between two supports. The bar is 900 mm in length at 38ºC, 600 mm of which is having a diameter
Q. What is Oil interceptors ? Oils and Grease are usually found in stormwater runoff from catchments. They come from spillage and leakage of fuels, lubricants, Vehicle coolants
I wish to build a deck that is 4.7m wide and 7m long alongside my house. I need to park a car under it so there can be no supports in the middle. Attached to the wall on one side a
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