12 Questions
What happens to the flow value as the asphalt content increases?
It increases and then decreases
What is the minimum ductility value of asphalt type (40-50) as per the Iraqi standard?
100 cm
What is the purpose of the CBR test?
To determine the strength of subgrade
What is the flash point temperature of paving grades of asphalt as per the Iraqi standard?
232°C
What is the maximum wear value of aggregate to be used in asphalt pavement as per the Iraqi standard?
Not specified in the Iraqi standard
What is the purpose of the penetration test?
To determine the grade of asphalt cement
What is the standard load applied to the sample when the needle is immersed in the penetration test at 40°C?
200 gm
What is the temperature of the oven in the loss on heating test?
163°C
What is the percentage of degradation for a sample of coarse aggregate if the aggregate weight after testing and sieving is 3160 gm?
36.8%
Which of the following grades of bitumen is harder?
30/40
What is the temperature of the aggregates used for mixing in hot mix type bituminous construction?
106°C
What is the sieve size that coarse aggregate is mainly retained on?
No. 4
Test your knowledge of highway engineering and asphalt properties with this quiz. Identify correct combinations of statements, determine the group index value for subgrade, and understand the flash point temperature of paving asphalt.
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