ENGINEERING ECONOMY AND ENERGY CONSIDERATIONS. ENVIRONMENTAL CONDITIONS FOR PLACING ASPHALTIC CONCRETE PAVEMENTS
Procedures that can be utilized to explore the validity of cessation requiremnts based on air temperature only are described, and it is shown that existing requirements as currently practiced in Texas, unduly restrict the placement of thick lifts of asphalt concrete and are not sufficiently restrictive for thin lifts of asphalt concrete. Among the methods of establishing cessation requirements is the Dempsey method (detailed in appendix) which allows for a wide range of factors to be included by sue of nomographs and charts, and does not necessitate the assumption for solar radiation, air temperature and wind velocity utilized to establish certain requirements. Comments are made related to lightweight aggregate mix. Utilizing information presented in this report as a basis, it may be possible to extend the construction season if thick mats of asphalt concrete are to be placed. Extension of the construction season would allow greater urilization of asphalt concrete related construction equipment and thus offer potential cost safings. Additionally, construction of thin mats would be prohibited when insufficient compaction time was available and thus lower maintenance and rehabilitation costs could be expected.
Texas State Department of Highways & Public TranspP.O. Box 5051
Austin, TX United States 78763
- Smith, R A
- Epps, J
- Publication Date: 1975-12
- Features: Appendices; Figures; References; Tables;
- Pagination: 48 p.
- TRT Terms: Asphalt concrete; Charts; Compaction; Construction equipment; Economics; Environment; Lightweight aggregates; Nomographs; Paving; Seasons; Solar radiation; Specifications; Temperature; Velocity; Wind
- Uncontrolled Terms: Lift thickness; Requirement; Thick lift construction
- Old TRIS Terms: Placing; Wind velocity
- Subject Areas: Construction; Economics; Highways; Materials;
- Accession Number: 00132897
- Record Type: Publication
- Report/Paper Numbers: No. 214-11 Res. Rept.
- Files: TRIS, STATEDOT
- Created Date: Jun 5 1976 12:00AM