详情

原文传递 Pilot Implementation of a New System to Calculate IRI Used for Pavement Design Procedures, Technical Report.

题名：	Pilot Implementation of a New System to Calculate IRI Used for Pavement Design Procedures, Technical Report.
作者：	lytton, r. l. aubeny, c. hong, g. t.
关键词：	moisture barriers, expansive soils, clays, asphalt pavements, concrete pavements, surface roughness, pavement condition, implementation
摘要：	The pilot implementation of the new system to calculate IRI used for pavement design purposes and applied to the design of pavements on expansive clays subgrades was conducted successfully. Six training sessions were conducted in three Districts: three for design engineers and three for laboratory technicians. Three sets of testing equipment were received, set up, calibrated, and made operational in the three district labs. Two computer programs, one for design and the other for the analysis of a pavement cross-section, to determine the expected performance of expansive clay roughness countermeasures were delivered to the three districts. User guides for each of the programs were provided to each of those in attendance. It is recommended that statewide implementation should now proceed to make this capability available to other districts within the state that have pavement performance problems caused by expansive clay roughness. The statewide implementation effort should include the monitoring validation described above, technical support of the computer programs and laboratory testing, additional training sessions in at least six more districts, and involvement of consulting engineers in the training sessions. / NOTE: Technical rept. (Sept. 2005 - Aug. 2006). / Supplementary Notes: Sponsored by Texas Dept. of Transportation, Austin. Research and Technology Implementation Office. and Federal Highway Administration, Austin, TX. Texas Div. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0716；18p
报告类型：	科技报告