17 Questions
Which test involves determining the bitumen content by expressing it as a percentage of weight of bitumen with respect to the total weight of the mix or total aggregate in the mix?
Consistency measurement of bituminous material
In which test are aggregates required to be oven-dried at 150°C before testing commences?
Consistency measurement of bituminous material
Which test involves compacting samples in a standard 100 mm diameter compaction mould using a 2.5 kg compaction hammer?
Consistency measurement of bituminous material
Which hazardous material test requires safety precautions to be exercised at all times due to the inhalation of solvent fumes being particularly harmful?
Consistency measurement of bituminous material
In which test is it necessary to calibrate balances using reference weight once every twelve months?
Consistency measurement of bituminous material
Which test is widely used for the design and control of asphaltic concrete and hot rolled asphalt materials?
Consistency measurement of bituminous material
What is the purpose of the water content test for bitumen?
To assess the water content in bitumen samples
Which of the following best describes the allowable maximum water content in bitumen?
0.1% by weight
What is the significance of the loss on heating test for bitumen?
To evaluate the consistency of bituminous material
In which temperature range is the loss on heating test typically conducted for bitumen?
180-200°C
What does a loss in weight during the loss on heating test indicate about bitumen used in pavement mixes?
Higher volatility
Which is a common parameter for grading bitumen in the 19th century?
Chewing method stiffness determination
What is the purpose of the ash point test for bitumen?
To qualify the temperature at which bitumen vapors catch fire in the form of ash
Why is it hazardous if volatile elements in bitumen catch fire at high temperatures?
It poses a safety risk due to fire hazard
In the float test for bituminous material, what is the oat value based on?
The time taken for water to pass through the specimen plug
Which test is used to determine the lowest temperature at which bituminous material ignites and burns?
Flash and fire point test
Why is it desirable for bitumen to have minimum water content?
To prevent foaming when heated above water's boiling point
Learn how to calculate the bitumen content in an asphalt mix as a percentage of weight, and understand the sample preparation process which may involve oven-drying the aggregates. Sample types (c) and (d) require combining various sample sizes to achieve the desired mix grading.
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