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Title:

Light Colored Asphalt Pavements: From Theory to Practice

Accession Number:

01373809

Record Type:

Component

Abstract:

This paper reports on the technology development and application of hydrated lime to treat the surface of asphalt concrete to develop light colored, grey, asphalt pavements. When appropriately applied on the surface of fresh asphalt concrete, hydrated lime makes the surface grey, significantly increases its albedo, and effectively reduces the pavement's hot weather temperature. Two application case studies are presented, focusing on how to ensure hydrated lime's long-term effectiveness on the surface of asphalt pavements and take into account the effect of the subsequent reduced temperature on the resilient modulus of asphalt concrete in the design of long-life flexible pavements. The increased asphalt concrete modulus, owing to lowered temperature, can reduce the design thickness of the asphalt concrete without sacrificing pavement performance. This also has a positive influence on reduced pavement heat island effects. It is concluded that the appropriate use of hydrated lime on asphalt pavement surfaces is an effective and economic method to produce light colored, grey, asphalt pavements.

Supplemental Notes:

This paper was sponsored by TRB committee AF000(2) Pavement Materials and the Urban Climate

Monograph Accession #:

01362476

Report/Paper Numbers:

12-1904

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Guo, Peijun
Emery, John J
Stolle, Dieter
Lixin, Zhang
Kang, Shangzhen
Li, Xiaozhong

Pagination:

24p

Publication Date:

2012

Conference:

Transportation Research Board 91st Annual Meeting

Location: Washington DC, United States
Date: 2012-1-22 to 2012-1-26
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Uncontrolled Terms:

Resilient modulus

Subject Areas:

Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I33: Other Materials used in Pavement Layers

Source Data:

Transportation Research Board Annual Meeting 2012 Paper #12-1904

Files:

TRIS, TRB

Created Date:

Feb 8 2012 5:06PM