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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'.
Presence of Deleterious Material Deleterious materials are vegetable matter, soft particles, clay lumps, mica, coal, etc. which can adversely affect the performance of aggreg
Define the Cavitation - underwater inspection of bridge? Cavitation damage is caused by repeated impact forces caused by collapse of vapour bubbles in rapidly flowing water. Th
Maintenance of Terminal Building: All accessories such as lighting, water, sanitation, telephone and public address system should be maintained in a good condition. Disposal
Compass surveying
A cantilever beam is loaded with a concentrated. Force of 5kN at the free end. The length of the cantilever beam is 1m having cross section of 50×50mm. determine the equation for b
horizontal and verticle allignment
working from whole to part
Q. Explain the Maximum spacing of piles? One of the factors which affect the distribution of loads from the structures to each pile is assumption of flexibility of the pile ca
How can i draw I.L for shear and moment?in details
what is shear stress
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