Etd

An Evaluation of Heated Reclaimed Asphalt Pavement (RAP) Material and Wax Modified Asphalt for Use in Recycled Hot Mix Asphalt (HMA)

Public

Downloadable Content

open in viewer

This study was carried out to evaluate the use of heated reclaimed asphalt pavement materials with emulsion and the use of hot mix asphalt with wax (Sasobit) as base course materials. Mixes with lower than optimum and optimum emulsion, as well as with heated reclaimed asphalt pavement material and optimum emulsion were made; also, mixes with conventional asphalt binder and those with asphalt binder and Sasobit were produced at relatively lower temperatures. These mixes were tested for workability, and all but one of the mixes were used for preparation of approximately 0.9 m (35 inches) by 0.9 m (35 inches) 0.125 m (5 inches) slabs. The rates of densification during the compaction of these slabs were compared. Samples cored from the slabs were tested for stiffness, and dry retained tensile strengths. The results showed that heating of reclaimed asphalt pavement material can improve the dispersion as well as densification significantly. The use of asphalt binder was found to be beneficial in improving strength and stiffness, and the use of Sasobit helped to achieve almost similar workabilities and compactabilities at lower temperatures, as compared to those of hot mix asphalt with neat asphalt binder. No significant difference was found between the modulus of the Sasobit and hot mix asphalt samples. The dispersion of asphalt binder seemed to improve with the use of Sasobit at lower mixing temperature. A field project is recommended for evaluating performance of emulsion mixes with heated reclaimed asphalt pavements and asphalt binder mixes with Sasobit.

Creator
Contributors
Degree
Unit
Publisher
Language
  • English
Identifier
  • etd-010807-113145
Keyword
Advisor
Committee
Defense date
Year
  • 2007
Date created
  • 2007-01-08
Resource type
Rights statement

Relations

In Collection:

Items

Items

Permanent link to this page: https://digital.wpi.edu/show/fj2362182