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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'.
Determine the meaning of Prestressed Concrete It is a type of concrete in which permanent internal stresses of a suitable nature, magnitude and distribution are intentionally
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Q. What is Diaphragms in bridges? Diaphragms in bridges The principal function of diaphragms is to provide stiffening effect to deck slab in case bridge webs aren't situat
Derived condition of economic span of bridge
Define Scour - Underwater Inspection of Bridges? Whenever a bridge crosses a waterway, even a small or intermittent one, scour is a dangerous effect that can damage bridge pier
State the importance of structural element If this structural element is used as a beam element, subjected to self load and other imposed transverse loads, then the bottom fibr
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Pressure at Any Point on the Surface of a Horizontal Plane Fluid pressure is the same at any point on the horizontal plane because: 1. The fluid specific weight is the sam
Dock Wall and Dry Dock: Dock Wall Figure gives the diagram of a dock wall. Figure: Mass Concrete Dock Wall Dry Dock Figure 9 gives the details
Explain the Analysis of Singly Reinforced Rectangular Beams: 1. Determine the area of steel reinforcement, As. Multiply the number of bars by the area of each bar. 2. Calcul
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