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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'.
Measurement of cement and aggregates - by weight vs. by volume Measurement of constituents for concrete is usually carried out by weight since of the following reasons: (i)
What is Collocated network operation As wireless LANs become more popular, it is likely for two or more wireless LANs to operate in the similar area or in some area where inter
describe details about stairs and its type also draw sketch?
With respect to implementation of Civil Engineering projects explain the relevance of application of the principle of ''Working from Whole to Part''
input and output devices used
I am a final year civil and structural student and i need your help about my final year project. My Final Year Topic: Finite Element Analysis of a bridge using Sap2000 Aim: Fi
advantages and disadvantages of chemical prestressing over conventional prestressing?
State the term - transverse force on concrete We know that in pre-stressed concrete, tendons are placed in a stretched condition and they always would try to regain their origi
Write a program called, A1Q1, that reads a single letter. It will then display the corresponding ASCII code of the letter and prints the next character and the character which is
on timber, varieties , preservation, and seasoning of timber
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