Title page for E-project-030609-183749

Project Type MQP

Submission date 2009-03-06

Authors
Karen Anne O'Sullivan, CE
Phyllis A Wall, CE

URN E-project-030609-183749

Title The Effects of Warm Mix Asphalt (WMA) Additives on Recycled Asphalt Pavement (RAP)

Advisors
Tao, Mingjiang, CE
Mallick, Rajib B, CE

Availability unrestricted

Abstract
More than 95% of the US transportation infrastructure is paved with HMA. RAP is a necessity to save aggregates and reduce the use of binder. The production temperature limits the amount of recycled HMA. WMA technology provides the option of recycling at a lower than conventional temperature, therefore recycling a higher RAP percentage, saving energy and reducing emissions. The purpose of this study was to evaluate the effects of Sasobit(R) and zeolite on the rutting, cracking and moisture susceptibility of HMA containing 100% RAP. Contact angle analysis showed no significant difference between asphalt binders. Density, dynamic modulus, indirect tensile strength, and contact angle results indicate better performance of recycled HMA with WMA additives compared to conventional recycled HMA.

Files
WMA_Aided_RAP_MQP.pdf

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Project Type	MQP
Submission date	2009-03-06
Authors	Karen Anne O'Sullivan, CE Phyllis A Wall, CE
URN	E-project-030609-183749
Title	The Effects of Warm Mix Asphalt (WMA) Additives on Recycled Asphalt Pavement (RAP)
Advisors	Tao, Mingjiang, CE Mallick, Rajib B, CE
Availability	unrestricted
Abstract More than 95% of the US transportation infrastructure is paved with HMA. RAP is a necessity to save aggregates and reduce the use of binder. The production temperature limits the amount of recycled HMA. WMA technology provides the option of recycling at a lower than conventional temperature, therefore recycling a higher RAP percentage, saving energy and reducing emissions. The purpose of this study was to evaluate the effects of Sasobit(R) and zeolite on the rutting, cracking and moisture susceptibility of HMA containing 100% RAP. Contact angle analysis showed no significant difference between asphalt binders. Density, dynamic modulus, indirect tensile strength, and contact angle results indicate better performance of recycled HMA with WMA additives compared to conventional recycled HMA.
Files	WMA_Aided_RAP_MQP.pdf