Aggregate Quality Tests

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20 Questions

What is the main purpose of mineral filler in road pavement?

To decrease the void contents in the mixture

Which test is NOT required for aggregates intended for Bituminous or Portland Cement concrete pavement?

Test for Hardness

What is the main component of Bituminous material used as a binder in road construction?

Asphalt cement

What is Emulsified Asphalt?

A type of mixture in which asphalt is dispersed in water

What is the main limitation of using oxidized asphalt in highways?

It is only suitable for roofing and similar applications

How is hardening achieved in epoxy binders for asphalt or concrete pavement?

By adding a catalyst to the resin before application

What is the characteristic of asphalt concrete pavement?

It is suitable for heavily treated roads

What causes Bituminous pavement failures?

Deflection from elastic deformation

What is the effect of repeated heavy wheel load on highly resilient soil?

It leads to complete failure of the roadway

What is the term used to describe the result of hardening epoxy resin and catalyst prior to application?

Thermosetting

What is the purpose of the mineral filler in road pavement?

To add density to the graded aggregates

Which test is NOT required for aggregates intended for Bituminous or Portland Cement concrete pavement?

Test for Resistance Polishing

What is the main component of Bituminous material used as a binder in road construction?

Asphalt cement

How does asphalt behave at normal temperature?

It becomes hard but brittle

What is the characteristic of epoxy binders after hardening?

They become rigid and flexible

What is the main limitation of using oxidized asphalt in highways?

It is only suitable for roofing and similar applications

What causes roughening and cracking of bituminous pavement?

Repetitious application of excessive load

What is the term used to describe the type of deformation that may occur in the road surface due to elastic and plastic deformation?

Deflection

What is the highest type of dense bituminous pavement suitable for the most heavily treated roads?

Asphalt concrete pavement

How is hardening achieved in epoxy binders for asphalt or concrete pavement?

By mixing the resin and catalyst before application

Study Notes

Mineral Filler and Aggregates

  • The main purpose of mineral filler in road pavement is to increase the density and stability of the asphalt mixture.
  • The test NOT required for aggregates intended for Bituminous or Portland Cement concrete pavement is the Soundness test.

Bituminous Material and Asphalt

  • The main component of Bituminous material used as a binder in road construction is Asphalt cement.
  • Emulsified Asphalt is a type of asphalt that has been mixed with water and an emulsifying agent to create a stable mixture.
  • Asphalt behaves as a viscous liquid at normal temperature.

Epoxy Binders and Hardening

  • The characteristic of epoxy binders after hardening is that they become rigid and strong.
  • Hardening in epoxy binders for asphalt or concrete pavement is achieved through a chemical reaction between the resin and catalyst.

Asphalt Concrete Pavement

  • The characteristic of asphalt concrete pavement is that it is a flexible pavement.
  • Bituminous pavement failures can be caused by failures in the asphalt layer, base course, or subgrade.

Soil and Pavement Deformation

  • Repeated heavy wheel loads on highly resilient soil can cause rutting.
  • The term used to describe the result of hardening epoxy resin and catalyst prior to application is "curing".
  • The term used to describe the type of deformation that may occur in the road surface due to elastic and plastic deformation is "rutting".

Oxidized Asphalt and Pavement Types

  • The main limitation of using oxidized asphalt in highways is that it becomes brittle and prone to cracking.
  • Roughening and cracking of bituminous pavement can be caused by oxidation.
  • The highest type of dense bituminous pavement suitable for the most heavily trafficked roads is Stone Mastic Asphalt (SMA).

Test your knowledge about the quality requirements and tests for aggregates intended for bituminous or Portland cement concrete pavement, as per AASTHO standard or Item-703. Learn about the tests for strength, soundness, affinity, swell, and shape.

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