Homework #4 1) What are bituminous materials? 2) What do the basic tests on asph

Question

Homework #4 1) What are bituminous materials? 2) What do the basic tests on asphalt materials measure? 3) What factors must be considered when designing an asphalt pavement's thickness? 4) What is the purpose of tack and prime coats of asphalt concrete? 5) The following densities were obtained from a compacted asphalt concrete pavement. If the lab mix density was found to be 142 pcf, find the percent compaction for each core below. Do one of the cores indicate potential problems? What are those problems? Core Density (pef 141.3 140.5 38.0 150.2 Determine the suggested pavement thickness for a pull-depth asphalt concrete driveway on plastic when wet soft clay. 6) 7) Calculate tons of asphalt to overlay a 5.00 mile long, 28 foot wide road that has a 3 inch 8) Determine tons of asphalt concrete needed to pave a 600 sq-ft area that has a in thick 9) Calculate the metric tons of asphalt concrete required to pave 2.5 km of roadway 5m thick wearing course of asphalt concrete. The asphalt has a density of 149.3 pef of asphalt concrete which has a density of 137 pef wide and 82mm thick. The density of the paving material is 2375 kg/m 1 of 1 Previous Courses

Explanation / Answer

1.) Bituminous materials having of bitumen which is a sticky black or dark coloured solid or viscous substances consists hydrocarbons that are derived from distillation of petroleum, has adhesive properties. Bituminous materials are mostly used to build roads.

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