flash and fire point test of bitumen pdf Wednesday, June 2, 2021 7:38:01 AM

Flash And Fire Point Test Of Bitumen Pdf

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The knowledge of this point is of interest mainly to the user, since the bitumen must not be heated to this point. The flash point tells the critical temperature at and above which suitable precautions are required to be taken to eliminate the danger of fire during heating. This temperature, however, is well below that at which the bitumen will burn.

Flash and Fire Point Test of Bitumen (Ref-IS: 1209)

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This test is done to determine the flash point and the fire point of asphaltic bitumen and fluxed native asphalt, cutback bitumen and blown type bitumen as per IS: — The principle behind this test is given below :. Flash Point — The flash point of a material is the lowest temperature at which the application of test flame causes the vapours from the material to momentarily catch fire in the form of a flash under specified conditions of the test. Fire Point — The fire point is the lowest temperature at which the application of test flame causes the material to ignite and burn at least for 5 seconds under specified conditions of the test. The sample should be just sufficient to fill the cup upto the mark given on it. Stir it thoroughly to remove air bubbles and water. Place it on the bath.

Flash point of bitumen is the temperature at which, its vapour will ignite temporarily during heating when a small flame is brought into contact with the vapour. The knowledge of this point is of interest mainly to the user, since the bitumen must not be heated to this point. The flash point tells the critical temperature at and above which suitable precautions are required to be taken to eliminate the danger of fire during heating. This temperature, however, is well below that at which the bitumen will burn. The latter temperature is called the fire point. It is the lowest temperature at which the vapour of a bituminous material momentarily takes fire in the form of a flash, under specified conditions of the test. It is the lowest temperature at which bituminous materials ignite and burn under specific conditions of the test.

Determining Flash And Fire Point Of Bitumen

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Scribd is the worlds largest social reading and publishing site. Lit the test flame and adjust it to a diameter of 3. The key difference between flash point and fire point is that the flash point describes the lowest temperature at which the ignition of a substance initiates whereas the fire point describes the lowest temperature at which the fuel continues to burn for a. A typical flash point test involves heating a small sample of asphalt binder in a test cup. The flash point typically degrees c or degrees f for mineral oils is an indication of the safety hazards of a lubricant with respect to fire and explosion. The fire point of a fuel is the lowest temperature at which the vapour of that fuel will continue to burn for at least 5 seconds after ignition by an open flame of standard dimension.

Flash and fire point test of bitumen pdf

Flash point is the lowest temperature corrected to a barometric pressure of The material is deemed to have flashed when a large flame appears and instantaneously propagates itself over the surface of the specimen. Note: Occasionally, particularly near the actual flash point, the application of test flame will cause the blue halo or an enlarged flame; this is not a flash and should be ignored. It is the lowest temperature at which a specimen will sustain burning for 5 seconds. Asphalt Cement shall be oil asphalt or a mixture of refined liquid asphalt and refined solid asphalt, prepared from crude asphaltic petroleum.

The flash point of a material is the lowest temperature at which the application of test flame causes the vapours from the material momentarily catch fire in the form of a flash under specified conditions of test. In practical view the fire point is the lowest temperature at which the application of test flame causes the material to ignite and burn at least for 5 seconds under specified conditions of test. At high temperatures, bituminous materials emit hydrocarbon vapours which are susceptible to catch fire. Therefore the heating temperature of bituminous material should be restricted to avoid hazardous conditions.

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12 Replies to “Exp # 6 Flash & Fire Point Test”

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Flash and Fire Point Test on Bitumen

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