WebDec 12, 2024 · What is the importance of softening point in pavement construction? How can the softening point of bitumen be increased? Introduction of polymers significantly increases softening point of bitumen. Softening point increase with increasing Polydom content is linear and at 3 \% it is up to 10 °C and at 4 \% – 12 °C. The softening point shows the temperature at which the bitumen gains a certain degree of softening under the specifications of the test. This test is carried out by using the Ring andBall apparatus. The softening point helps to determine the temperature up to which bitumen can be heated for different … See more To determine the softening point of asphaltic bitumen, fluxed native asphalt, road tar, coal tar pitch, or blown type bitumen in the laboratory. See more The softening point helps in the determination of the temperature beyond which the bitumen is softened beyond a pre-specifiedsoftness. Hence, the softening point test of … See more apparatus used in ring and ball test of bitumen, 2 Balls: Each ball is 9.5 mm in diameter and its weight is 3.5 ± 0.5 gram. 2 Brass rings: The rings are tapered from inside- the outside … See more Softening Point: It is the degree of temperature at which a solid substance starts to convert into a liquid state under certain specific … See more
Standard Test Method for Softening Point of Bitumen (Ring-and …
WebHighway Engineering LaboratoryThis course covers laboratory practices and experiments to ensure students are familiar with the use of various test equipment ... WebPut in water bath till 60 minutes to 90 minutes. Take out sample from the water bath and put it to the penetration machine taking the initial value of the penetration machine. Now, switch on the machine and let the needle penetrate the sample of bitumen till 5 seconds. Keep in mind, while testing sample the temperature should be nearly 25 ... can kidney stone pass through urine
Softening Point of Bitumen - YouTube
WebApr 21, 2024 · Softening point is the temperature at which a steel ball falls a known distance through the bitumen when the test assembly is heated at a known rate. Usually the test consist of a (3/8) in dia. steel ball, weight 3.5 gm, which is allowed to sink through a (5/8) in dia, (1/4) in thick disk of bitumen in a brass ring. WebAug 25, 2024 · Bitumen is viscous elastic material without sharply defined melting points. They gradually become softer and less viscous as the temperature rises. This is the reason why the softening point of bitumen is determined. Softening point is not a melting point, bituminous material do not melt but instead gradually change from semi solids to liquids … WebAnswer (1 of 2): ***SOFTENING POINT OF BITUMEN**** ..Softening point of bitumen is the temperature at which the steel ball of 3.5 gm penitrates the bitumen specimen by 25 mm … can kidney stones affect the prostate