Please use this identifier to cite or link to this item: https://doi.org/10.1061/(ASCE)0733-947X(2003)129:4(420)
Title: Effect of aggregate spacing on skid resistance of asphalt pavement
Authors: Fwa, T.F. 
Choo, Y.S. 
Liu, Y.
Keywords: Aggregates
Asphalt pavements
Skid resistance
Spacing
Issue Date: Jul-2003
Source: Fwa, T.F., Choo, Y.S., Liu, Y. (2003-07). Effect of aggregate spacing on skid resistance of asphalt pavement. Journal of Transportation Engineering 129 (4) : 420-426. ScholarBank@NUS Repository. https://doi.org/10.1061/(ASCE)0733-947X(2003)129:4(420)
Abstract: In the design of skid resistant asphalt pavements, it is a common practice in pavement engineering to perform laboratory tests to ensure that the paving aggregate has the required frictional resistance and wheel-polishing resistance, and to specify a minimum surface texture depth of the completed pavement to provide adequate surface drainage for safe travel in wet weather. These controls, however, may not be adequate for all types of pavement construction. For instance, field experience in Singapore indicated that aggregate spacing, or gap width between aggregates, had important effects on the skid resistance of asphalt pavements. This paper describes a laboratory study to examine the effect of aggregate gap width on frictional resistance of laboratory prepared specimens. Aggregate gaps ranging from 2 to 10 mm were studied. The 2 mm gap represents that of a dense graded mix, while 10 mm gaps are found in a typical porous asphalt mixture. The British pendulum tester was adopted for the experimental evaluation of frictional resistance. The laboratory test results confirmed the effect of aggregate spacing as observed in the field. Further experimental tests using laboratory fabricated portland cement specimens indicated that the area of the contact surface, as well as the number of gaps within the test area have significant effect on the measured frictional resistance. There is a need for pavement engineers to examine this effect in the asphalt pavement mix design process to ensure that adequate skid resistance will be achieved in actual construction.
Source Title: Journal of Transportation Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/65475
ISSN: 0733947X
DOI: 10.1061/(ASCE)0733-947X(2003)129:4(420)
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

63
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.