Describe the techniques used to repair flexible and rigid pavements and their effectiveness for the following treatment types: (a) patching, (b) crack maintenance, and (c) overlays.
What will be an ideal response?
(a) Patching
Techniques: Temporary, permanent, spot seal (spray), cold mix, hot mix, and level.
Effectiveness: When properly done, patching is considered to be effective.
Temporary patching is considered moderately effective to serve for a short period
until permanent repairs can be made.
(b) Crack Maintenance
Techniques: Crack cleaning, sealing and filling
Effectiveness: Relatively effective. Fairly short life. Must be repeated often (1- 2
years)
(c) Overlays
Techniques: Thick or thin. Pavement reinforcing, fabric overlays, inverted overlays
Effectiveness: Considered to be an effective technique.
You might also like to view...
A danger of looking at your mirrors for too long is that
A. You will see potential hazards. B. You will travel too far without knowing what is happening on the roadway ahead. C. The mirrors may shake and move.
Explain the difference between normal-weight (NW) and lightweight (LW) coarse aggregate.
What will be an ideal response?
When an equipment frame is bonded to metal conduit, it acts as the equipment _____.
a. neutral b. grounding conductor c. high leg d. ungrounded conductor
Farmers and environmentalists have tended to be allies on land retirement programs
Indicate whether the statement is true or false