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Which one of the following test is performed in the laboratory to detect overheated or cracked bitumen and are more sensitive than the other test in terms of detection of cracking
- a)Softening Point Test
- b)Float Test
- c)Flash and Fire Point Test
- d)Spot Test
Correct answer is option 'D'. Can you explain this answer?
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Which one of the following test is performed in the laboratory to dete...
- Softening point denotes the temperature at which the bitumen attains a particular degree of softening under the specifications of the test. The test is conducted by using the Ring and Ball apparatus.
- Normally the consistency or stiffness of bituminous material can be measured either by penetration test or viscosity test. But for a certain range of consistencies, these tests are not applicable and Float test is used.
- The bitumen content of a bituminous material is measured by means of its solubility in carbon disulfide and hence can be considered as purity test for bitumen. In the standard test for bitumen content (ASTM D4), a small sample of about 2 g of the asphalt is dissolved in 100 ml of carbon disulfide and the solution is filtered through a filtering mat in a filtering crucible.
- Spot test is used to find out cracking in bitumen. It is performed in the laboratory to detect overheated or cracked bitumen and are more sensitive than the Solubility test in terms of detection of cracking
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Which one of the following test is performed in the laboratory to dete...
Spot Test
The correct answer is option D, the spot test. The spot test is performed in the laboratory to detect overheated or cracked bitumen, and it is more sensitive than the other tests mentioned in terms of detection of cracking.
Softening Point Test
The softening point test is a common test used to determine the temperature at which bitumen softens. It measures the point at which a bitumen sample becomes soft enough to allow a steel ball to sink a specified distance under a standard load. However, this test is not specifically designed to detect overheating or cracking in bitumen.
Float Test
The float test is used to determine the purity of bitumen by determining the presence of impurities such as dust, water, or foreign matter. It involves immersing a bitumen sample in a container of water and observing whether it floats or sinks. However, this test does not provide information about overheating or cracking in bitumen.
Flash and Fire Point Test
The flash and fire point test is used to determine the lowest temperature at which bitumen vapors can ignite and sustain combustion when exposed to an open flame. This test is primarily used to assess the safety of bitumen during transportation and storage. It is not specifically designed to detect overheating or cracking in bitumen.
Spot Test
The spot test is a specialized test performed on bitumen samples to detect overheating or cracking. In this test, a small amount of bitumen is placed on a white paper or filter paper, and the paper is folded over the bitumen. The folded paper is then heated gently using a flame or a hot air gun. If the bitumen is overheated or cracked, it will produce fumes or smoke, and the paper may become discolored or burnt. This test is particularly sensitive to detecting minor cracks or overheating in bitumen, making it a valuable tool for quality control and assessment of bitumen samples.
The correct answer is option D, the spot test. The spot test is performed in the laboratory to detect overheated or cracked bitumen, and it is more sensitive than the other tests mentioned in terms of detection of cracking.
Softening Point Test
The softening point test is a common test used to determine the temperature at which bitumen softens. It measures the point at which a bitumen sample becomes soft enough to allow a steel ball to sink a specified distance under a standard load. However, this test is not specifically designed to detect overheating or cracking in bitumen.
Float Test
The float test is used to determine the purity of bitumen by determining the presence of impurities such as dust, water, or foreign matter. It involves immersing a bitumen sample in a container of water and observing whether it floats or sinks. However, this test does not provide information about overheating or cracking in bitumen.
Flash and Fire Point Test
The flash and fire point test is used to determine the lowest temperature at which bitumen vapors can ignite and sustain combustion when exposed to an open flame. This test is primarily used to assess the safety of bitumen during transportation and storage. It is not specifically designed to detect overheating or cracking in bitumen.
Spot Test
The spot test is a specialized test performed on bitumen samples to detect overheating or cracking. In this test, a small amount of bitumen is placed on a white paper or filter paper, and the paper is folded over the bitumen. The folded paper is then heated gently using a flame or a hot air gun. If the bitumen is overheated or cracked, it will produce fumes or smoke, and the paper may become discolored or burnt. This test is particularly sensitive to detecting minor cracks or overheating in bitumen, making it a valuable tool for quality control and assessment of bitumen samples.
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Which one of the following test is performed in the laboratory to detect overheated or cracked bitumen and are more sensitive than the other test in terms of detection of crackinga)Softening Point Testb)Float Testc)Flash and Fire Point Testd)Spot TestCorrect answer is option 'D'. Can you explain this answer?
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