Abstract
Eight experimental bead types in addition to Kentucky's currently used bead were applied with standard striping equipment at a field test location. Reflectivity measurements using a portable retroreflectometer were conducted, along with visual observations, to rate each bead type. The objective was to determine whether any of the experimental beads was superior to the currently used bead, and if so, would they be economically feasible for widespread use. The differences in bead types involved gradation, refractive index, and surface coating. Based on performance and economic considerations, it was recommended that Kentucky change its bead gradation specifications to correspond to that for the fine-gradation bead used in this study. The bead type termed "finegradation" in this study did not involve an unusally finely graded bead. It was considered a fine-gradation bead in comparison to Kentucky's currently used bead which has a higher percentage of large beads (beads retained on the No. 30 sieve). No changes in the presently used refractive index or surface coating were recommended.
Report Date
11-1983
Report Number
UKTRP-83-93
Digital Object Identifier
http://dx.doi.org/10.13023/KTC.RR.1983.93
Repository Citation
Agent, Kenneth R. and Pigman, Jerry G., "Performance Evaluation of Experimental Paint-Stripe Beads" (1983). Kentucky Transportation Center Research Report. 1396.
https://uknowledge.uky.edu/ktc_researchreports/1396
Notes
The contents of this report reflect the views of the authors, who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Kentucky, the Federal Highway Administration, or the Kentucky Transportation Cabinet. This report does not constitute a standard, specification, or regulation.