Stone Aggregates MCQs : Here you will find MCQ Questions related to "Stone Aggregates" in Highway Engineering. These Stone Aggregates MCQ Questions Will help you to improve your Highway Engineering knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations.
Bear stresses occurring on the roads and have to resist wear due to?
A. abrasive action of traffic
B. aggregates action of traffic
C. rigid pavements
D. None of the above
Explanation: Bear stresses occurring on the roads and have to resist wear due to abrasive action of traffic
Which of the following is true regarding Aggregates?
A. Aggregates form the major portion of the pavement structure
B. Aggregates are also used in flexible as well as in rigid pavements
C. Properties of aggregates are of considerable importance to highway
D. All of the above
Explanation: Aggregates form the major portion of the pavement structure. Aggregates are also used in flexible as well as in rigid pavements. Therefore, the properties of aggregates are of considerable importance to highway.
Which of the following is not a Desirable Properties of Road Aggregates?
D. Shape of bitumen
Explanation: Shape of aggregates is Desirable Properties of Road Aggregates.
The plate bearing test is used to evaluate __________
A. Modulus of sub grade reaction
B. Modulus of sub base reaction
C. Modulus of base reaction
D. Modulus of pavement
Explanation: The plate bearing test is used to evaluate the modulus of subgrade reaction “k” which is used in westergards analysis.
Stone aggregate do not have to resist __________
A. Weathering effect
B. Traffic load
C. Soil lead
D. Wheel load stress
Explanation: Stone aggregate do not have to resist the soil load as they are transferred by foundation only, weathering traffic and wheel load are directly experienced by aggregates.
Soft aggregates are used in __________
A. Upper layers
B. Lower layers
C. Everywhere in the pavement
D. Depends on the material
Explanation: Soft aggregates cannot resist the weathering action and wheel load of the vehicle, so they are preferred in lower layers, as they are impacted directly.
Which tests is used to describe the suitability of aggregates for use in road construction?
C. Impact test
D. All of the above
Explanation: In order to describe the suitability of aggregates for use in road construction, the following tests are used: Crushing, Abrasion, Impact test, Soundness, Bitumen adhesion test, Shape test, Specific gravity and water absorption.
Aggregates obtained from which type of rocks are strong?
D. Rocks formed by weathering
Explanation: Aggregates that are obtained from igneous rocks are strongest they include granite, basalt. Sedimentary are obtained from igneous rocks and metamorphic from igneous and sedimentary so they are not so strong.
What is the maximum size that can be used in plain concrete?
A. 70 mm
B. 80 mm
C. 90 mm
D. 100 mm
Explanation: The maximum size of aggregate that can be used in plain concrete is 80mm with ease of workability, however they exceed in some special cases up to 100 mm, mostly 20 mm aggregate is used in RCC and 40 mm in pavements.
What is the maximum size of aggregate that can be used in R.C.C?
A. 10 mm
B. 15 mm
C. 20 mm
D. 25 mm
Explanation: The maximum size of aggregates used in RCC is limited to 20mm, for ease of compaction and workability, however 10 mm, 15 mm are also used, in some exceptions 25 mm also is used.