A performance comparison of asphalt mixtures modified with hydrated lime, polymer modified binder and reclaimed asphalt shingles (RAS) on Route 50 Moniteau, Morgan and Pettis counties.

Schroer, Joe

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A performance comparison of asphalt mixtures modified with hydrated lime, polymer modified binder and reclaimed asphalt shingles (RAS) on Route 50 Moniteau, Morgan and Pettis counties.

2013-03-01
By Schroer, Joe

File Language:

English

Details

Creators:

Schroer, Joe
Corporate Creators:

Missouri. Dept. of Transportation
Subject/TRT Terms:
Publication/ Report Number:

cmr 13-011
Resource Type:

Tech Report
Geographical Coverage:

Missouri
Corporate Publisher:

Missouri. Dept. of Transportation. Division of Construction and Materials
Abstract:

Hydrated lime was required in high traffic asphalt mixtures controlled by Section 403 of the Missouri Standard Specifications for Highway Construction from the late 1980’s through much of the 1990’s primarily as an anti-stripping agent but also for some initial stiffness and stability in mixtures during placement. With the advent of the Superpave mix design system and volumetric field control of HMA, contractors began to complain that the hydrated lime requirement added dust to their mixtures that made it more challenging to meet volumetric requirements in the field without adding harder, more durable, (in other words, more expensive) aggregate. Sources for these aggregates are not as wide spread and many times cost more and require hauling more than 100 miles. For roughly the same cost in the mixture, they could use liquid anti-stripping agents but save money by using more aggregate local to the project. It was agreed to allow contractors to choose liquid anti-stripping agents or hydrated lime. Rather quickly, hydrated lime use became limited amongst contractors.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/26691/dot_26691_DS1.pdf
File Type:

[PDF - 991.17 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:bebe70421e5f5c1a526834f1c8145c09a11e9b16e912dd8d6d60ebd4d3f57d40

File Language:

English

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