Paving asphalts : reduction of oxidative hardening of asphalts by treatment with hydrated lime : a mechanistic study

Plancher, Henry; Green, E. L.; Petersen, J. Claine; Laramie Energy Research Center

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Paving asphalts : reduction of oxidative hardening of asphalts by treatment with hydrated lime : a mechanistic study

1977-04-01
By Plancher, Henry ; Green, E. L. ; Petersen, J. Claine

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English

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Creators:

Plancher, Henry ; Green, E. L. ; Petersen, J. Claine

Plancher, Henry ; Green, E. L. ; Petersen, J. Claine Less -
Corporate Creators:

Laramie Energy Research Center
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Asphalt Additives Asphalt Hardening Calcium Hydroxide
Publication/ Report Number:

FHWA-RD-77-147
Resource Type:

Tech Report
Edition:

Interim report
Contracting Officer:

Zenewitz, J. A.
Corporate Publisher:

United States. Federal Highway Administration
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
Abstract:

This study showed that lime treatment removes polar, viscosity-building components and reduces the susceptibility of the asphalt to laboratory oxidative hardening. The beneficial effects of lime treatment in reducing asphalt oxidative hardening were attributed to two synergistic effects: (1) lime reduces the formation of oxidation products by the removal of oxidation catalysts or promoters and (2) lime reduces the sensitivity of the asphalt to these oxidation products by removing polar molecules that would otherwise interact with the oxidation products to cause an increase in viscosity. Relationships were observed between polar functional group interactions and changes in asphaltene content and viscosity.
Format:

PDF
Funding:

P.O. No. 6-3-0031;FCP Code 39A6-051
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:3055504e19d589fa23291f10f0cc44556c9d62ebb2ecc5461a86478558175511
Download URL:

https://rosap.ntl.bts.gov/view/dot/921/dot_921_DS1.pdf
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Paving asphalts : reduction of oxidative hardening of asphalts by treatment with hydrated lime : a mechanistic study

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