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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'.
In addition to its own weight, the beam in Figure is to carry a uniformly distributed live load of 12 kN/m. Figure 1 also shows the cross-sectional details of the beam. Design a
Define about the Inclined Borings Inclined brings may also be used in exploration of inclined strata and for the detection of weak pockets (lenses), buried channels, caviti
Question Is it true that there is no essential to design nominal reinforcement to piles. Answer In BS8110 and BS5400 Pt.4, they need provision of nominal reinforce
purpose
Properties of Matter: Due to surface tension, the free surface of a liquid behaves like a stretched elastic membrane tending to contract so as to have minimum surface area.
Brick Pavement: In regions where stone aggregates are not available within economical leads, bricks provide a cheaper alternative. Flat-brick or brick-on-edge pavements provi
Define Pneumatic Tools for Underwater Inspection of Bridge? These are more efficient than hand tools and cause less diver fatigue. The disadvantages are that below about 20 m,
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how can find forebearing
DEFINITION TYPE STEP OF CONSTRUCTION STEP OF SAFETY
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