Transport Road Research TRL Road Note 39 gives a design guide for road surface dressing. List...

 

Transcribed Image Text:

Transport Road Research TRL Road Note 39 gives a design guide for road surface dressing. List at least five main factors influencing the selection of the type of surface dressing. b) Give two examples of how innovations in asphaltic design help in cutting down on carbon emissions, and briefly state where such material could be used within the pavement structure. c) Briefly describe what a contraction joint is used for and show in a sketch its details. d) What are the main aims behind the need for pavement monitoring and evaluation procedures? List the main requirements that need to be fulfilled by the pavement. e) The best estimate of the number of standard axles using the left-hand lane of a dual carriageway road is 20.9msa. Assuming that the type of pavement is flexible, the design life is 40 years, the subgrade is mainly consisting of silty clay material, the water table level is at least 1 meter down and thin construction with good quality drainage, produce detailed designs for a suitable asphaltic material as the main base material, with and without the use of porous asphalt. Transport Road Research TRL Road Note 39 gives a design guide for road surface dressing. List at least five main factors influencing the selection of the type of surface dressing. b) Give two examples of how innovations in asphaltic design help in cutting down on carbon emissions, and briefly state where such material could be used within the pavement structure. c) Briefly describe what a contraction joint is used for and show in a sketch its details. d) What are the main aims behind the need for pavement monitoring and evaluation procedures? List the main requirements that need to be fulfilled by the pavement. e) The best estimate of the number of standard axles using the left-hand lane of a dual carriageway road is 20.9msa. Assuming that the type of pavement is flexible, the design life is 40 years, the subgrade is mainly consisting of silty clay material, the water table level is at least 1 meter down and thin construction with good quality drainage, produce detailed designs for a suitable asphaltic material as the main base material, with and without the use of porous asphalt.

Answer rating: 100% (QA)

a Factors influencing the selection of the type of surface dressing Traffic Load The volume and type of traffic influence the selection of surface dressing Higher traffic loads may require more durabl... View the full answer