BITUMINOUS PAVEMENT SMOOTHNESS A STATISTICALLY BASED APPROACH TO ACCEPTANCEUTILIZING THE CALIFORNIA TYPE PROFILOGRAPH, CALIFORNIA TEST METHOD 526, AND COMPUTERIZED PROFILOGRAM REDUCTION

摘要

Since 1987, the Federal Lands Highway (FLH) Branch of the Federal Highway Administration(FHWA) has been evaluating acceptance of newly constructed bituminous pavements usingCalifornia-type profilograph measurements. California Test Method 526 and FLH T504, as wellas various acceptance plans, have been employed in this evaluation.The purpose of this study was threefold.. To determine whether operator trace reduction variability was too large for the method to besuitable for acceptance testing.. To decide the type of acceptance plan to incorporate in the Standard Specifications forConstruction of Roads and Bridges on Federal Highway Projects (FP-92).. To evaluate two commercially available computerized trace reduction systems.The study concludes that, when used in conjunction with statistical evaluation procedures, the testmethod is suitable for acceptance purposes and that computerized trace reduction is superior tomanual reduction.The report also presents some fundamentals of statistically based acceptance that are not widelyknown or understood by highway engineers.