Question

Is pavement Engineering subject!
Please, solve this problem and make sure it's 100% correct! Thanks!

True(T) or False(F) for the following statement 1. Rounded aggregate does not provide interlocking for asphalt mixture 2. Fine aggregate is the aggregate retaining No. 4 sieve. 3. Asphalt is a viscoelastic material 4. Asphalt binders that are soft are responsible for thermal cracking. 5. Air void level for the asphalt pavement after rolling is 6-9%, but the air void level will decrease over time. 6. In Washington state, there are two climate zones. PG 64-28 is typically used in eastern side; PG 58-28 is used in western side. For high traffic volume, we need to bump up the grade. a pavement engineer, rehabilitation accounts for 95% work for pavement design 7 8. PCI is pavement condition index. The higher PCI, the worse pavement condition. 9. Mr. Skyler Chaney is from Oregon 10. As the photon shown, he is measuring the crack length of pavement

Answer 1

As per guidelines fire four subparts are to be solved.

Hence solving those for you

1: false , round aggregate too provide particle to particle interlock but it creates less interlock than the angular aggregate.

2: false as fine aggregate are those which passes through no. 4 sieve and are retained of sieve number 200.

3: here asphalt can be used as bitumen or asphalt concrete depending on american and british english. Both are viscoelastic in nature. Hence true.

4:false thermal cracking depends on temperature difference between newly laid layer and ore lying layer.