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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'.
A footing, 2 m square, is founded at a depth of 1.5 m in a sand deposit, for which the corrected value of N is 27. The water table is at a depth of 2 m from the surface. Verify the
Specification of wet mix macadam
Q. What is Sedimentation tank ? This is a process in which the water is passed through bases or tanks in which the velocity of water is so reduced or water is given a period of
Define Mechanical tool for underwater inspection of bridge? Mechanical devices that involves a Schmidt Test Hammer for computing concrete surface hardness, and rotary coring eq
EXPLAIN SITUATION OF THE PORTAL FRAME CAN CAUSE SWAY WITH THE AID OF A DIGRAM
Askobstacles I ranging andsurvey question #Minimum 100 words accepted#
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Q. Inspection and Quality Control Certificate : A 'lot' under inspection should be accepted by the inspector when no defect is found in the acceptance level tests and so certif
An undisturbed sample of sand has a dry weight of 18.9 N and a volume of 1143 cm 3 . The solids have a specific gravity of 2.72. Laboratory tests indicate void ratios of 0.40 and 0
What you need to do in my assignment only for the calculation part for project Task CalculateSG A: Ground Level, SG B: First Level, SG C: Second > Level, SG D: Third Level, and Su
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