Bituminous materials are used in highway construction primarily because of their
The group index of a soil sub-grade is 7. The sub-grade soil is rated as
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Rapid curing cutback bitumen is produced by blending bitumen with
Main drawback of CBR method is that it
Emulsions are used as binder mainly for
Aggregate used in road construction should have flakiness index not more than
Which one of the following premix methods is used for base course?
What is the recommended grade of tar of grouting purpose?
Which one of the following is the correct statements:
Penetration to know bitumen grade is measured in:
A typical Marshall test graph is shown in the given figure. The variable on the X-axis is % binder content by weight of total mix. The variable on the Y-axis for the given graph will be
The plasticity index of the fraction passing 425 micron IS sieve in case of sub-base/base course should be
Which one of the following diagrams illustrates the relationship between VMA and % bitumen content (BT) in -Marshall test?
Bitumen grade 80/100 indicates that under the standard test conditions, penetration value of bitumen would vary from
The best binder material to be used with stone aggregates for patch repair work, is patch pot holes on wet pavements during the rainy season when the traffic is also heavy, is
The most common type of failure that occurs on a flexible pavement is
In which of the following types of bituminous constructions is proportionating of materials determined from laboratory tests?
Which of the following tests measures the toughness of road aggregates?
The binder normally used in flexible pavement construction is