Development of surface friction guidelines for LADOTD : tech summary.

Wu, Zhong; King, Bill

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Development of surface friction guidelines for LADOTD : tech summary.

2012-04-01
By Wu, Zhong ; King, Bill

File Language:

English

Details

Creators:

Wu, Zhong ; King, Bill
Corporate Creators:

Louisiana Transportation Research Center
Corporate Contributors:

Louisiana. Dept. of Transportation and Development ; United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/LA.11/485
Resource Type:

Tech Report
Geographical Coverage:

Louisiana
Edition:

Tech summary.
Corporate Publisher:

Louisiana Transportation Research Center
Abstract:

The current Louisiana Department of Transportation and Development (LADOTD) surface friction guidelines deal with the polished ; stone values (PSV) of coarse aggregates (which is a relative British Pendulum skid-resistance number measured on polished stones). ; The basic assumption is that coarse aggregates with high PSV values will automatically provide suffi cient surface friction for a wearing ; course mixture. However, the fi eld measurement on friction resistance sometimes does not necessarily support such an assumption. ; In fact, there are many variables/parameters that may aff ect pavement surface friction resistance, and the PSV is just one of them. The ; use of only PSV of coarse aggregates has somewhat clouded the fundamental issues related to skid resistance of a pavement surface. ; In addition, since very limited highly friction-resistant aggregates are locally produced in Louisiana, such friction guidelines will often ; tend to screen out locally available materials by requiring the imported highly friction-resistant aggregates in a wearing course, which ; may not be cost-eff ective.
Format:

PDF
Funding:

LTRC Project number: 09-2B ; SIO number: 30000119
Download URL:

https://rosap.ntl.bts.gov/view/dot/24728/dot_24728_DS1.pdf
File Type:

[PDF - 263.62 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:45c194cb4cafd1fced7745d867a2abaf3413a45d09b31824dc04541d17c7e2d3

File Language:

English

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