Evaluation of modified asphalt using chlorinated and maleated waste polymers.

Daly, William H.; Negulescu, Ioan I.; Yeh, P. H.; Mohammad, Louay N.

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Evaluation of modified asphalt using chlorinated and maleated waste polymers.

2002-07-01
By Daly, William H. ; Negulescu, Ioan I. ; Yeh, P. H.

File Language:

English

Details

Creators:

Daly, William H. ; Negulescu, Ioan I. ; Yeh, P. H. ; Mohammad, Louay N.
Corporate Creators:

Louisiana State University. Dept. of Chemistry
Corporate Contributors:

Louisiana Transportation Research Center
Subject/TRT Terms:
Publication/ Report Number:

FHWA/LA-02/345
Resource Type:

Tech Report
Geographical Coverage:

Louisiana
Corporate Publisher:

Louisiana State University. Department of Chemistry
Abstract:

Asphalt modification using polymeric additives derived from solid wastes, i.e. polyolefins, is reported. Chlorination of polyethylene can be controlled to produce semicrystalline polymeric additives. Differential scanning calorimetry can be used to determine the asphalt crystallinity and the distribution components among phases in asphalt/polymer blends. To enhance the resolution of a given thermogram, a several-step annealing process is required to experimentally realize a near-equilibrium state. Introducting chlorine atoms on polyethylene chains can improve the compatibility of the asphalt/polymer blends by adjusting the interaction between the components of asphalt and polymer. Maleation of polyolefins at very low levels (one to two percent) is an effective means for enhancing the polarity of the additive without influencing the degree of crystallization. The more polar additives also produce compatible polymer/asphalt blends. The chlorinated polyethylene-modified hot mix asphalt cement did show improved fundamental engineering properties relative to tank asphalt at all temperatures.
Format:

PDF
Funding:

95-3B
Download URL:

https://rosap.ntl.bts.gov/view/dot/22168/dot_22168_DS1.pdf
File Type:

[PDF - 2.35 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:bd5394124254cfda686f20c5c06d0fb0be97e3d5f0f7893dd144d979cebcf7000a42cc6a517c7ca5f8049eb4470b174b89bb416c9eac17fcf523b5ad3ba5a34b

File Language:

English

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