Date circle one T F Btuminous concrete is composed of asphal

Date (circle one) T F Btuminous concrete is composed of asphalt cement, graded aggregate and air voids. Bituminous concrete mixes have 2.5-10% asphalt content by weight dependent on use T F 2. TF3. If the underlying base temperature is less than 20°F, bituminous concrete at TF4. The screed on the paving machine strikes off, compacts and smoothes the TF S. Penetration macadam is composed of course aggregate sprayed with asphalt temperatures over 310°F may be applied. paved surface to approximately 15% air voids prior to rolling. applied by a pressure distributor choked with smaller aggregate and compacted. Breakdown rolling is the first type of compaction, usually just behind the screed of the paver. T F 6. Select material is used to replace undesirable native materials and can include soil aggregates, recycled asphalt or crushed concrete and others of specified gradations T F 7. Hot mix asphalt when leaving the paver has about5 compaction Lesser amounts of asphalt cement are used in base courses than intermediate and top courses. T F 9.

Solution

1. true

Bituminous concrete composed of ashpalt cement, aggregate and air voids.

2. TRUE

based on requirement ashpalt content varies from 2.5 to 10%

3. False

4. Flase

Screening doesn\'t leads to 15% compaction