Asphalt Additives for Increased Pavement Flexibility

Button, Joe W.; Little, Dallas N.

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Asphalt Additives for Increased Pavement Flexibility

1986-11-01
By Button, Joe W. ; Little, Dallas N.

File Language:

English

Details

Creators:

Button, Joe W. ; Little, Dallas N.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Asphalt Additives Asphalt Mixtures Cracking Evaluation Fatigue (Mechanics) Flexible Pavements Paving Materials Rutting Stiffness
Publication/ Report Number:

FHWA/TX-87/471-2F
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Final - September 1984- November 1987
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

Research was performed to evaluate asphalt additives as economic treatments to reduce premature cracking without adversely affecting rutting. Five asphalt additives were selected and evaluated in a comprehensive laboratory test program. Additives selected for evaluation included block copolymer rubber, SBR latex, ethylene vinyl acetate, polyethylene and carbon black. Asphalts two grades softer than that normally used in HMAC from two sources with widely differing properties were blended with each additive. Assessments of the effects of these additives were based on rheological and physicochemical properties of asphalt cement and on mixture stability, stiffness, tensile properties, and resistance to fatigue, thermal cracking, plastic deformation and moisture damage. Although each additive tested reduced the temperature susceptibility of both asphalts and showed the potential to reduce cracking and/or rutting in asphalt concrete pavements, no additive surfaced as a cure-all.
Format:

PDF
Funding:

2-9-85-471
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:94df0f6c60cd701bdedd7b2f18f5478108a17b80268e31bd16d3a93a1b14d84db241246d53cd0a904d4f5471bba5b13e9cfe2aba3c5a192ccb1948bc50901da3
Download URL:

https://rosap.ntl.bts.gov/view/dot/84994/dot_84994_DS1.pdf
File Type:

[PDF - 6.37 MB ]

File Language:

English

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