Improved HMAC Plant Binder Aging Simulation Report of Preliminary Findings and Intended Project Direction

Vassilyev, Nikolai; Glover, Charles J.; Davison, Richard R.

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Improved HMAC Plant Binder Aging Simulation Report of Preliminary Findings and Intended Project Direction

2001-01-01
By Vassilyev, Nikolai ; Glover, Charles J. ; Davison, Richard R.

File Language:

English

Details

Creators:

Vassilyev, Nikolai ; Glover, Charles J. ; Davison, Richard R.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/TX-0111742-1
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Literature Review: September 1999 - January 2000
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Description:

Two procedures to simulate HMAC plant aging are currently used. These are the rolling thin film oven test (RTFOT) and the thin film oven test (TFOT). When used for unmodified asphalts these methods are essentially identical in simulating asphalt short-term aging. However, when applied to modified binders, practitioners have encountered a number of problems with both RTFOT and TFOT procedures. Modified asphalts tend to form surface films that reduce oxygen diffusion and cause uneven aging. Many modified materials are too viscous to form good films in RTFOT bottles and are also difficult to remove after the test is completed. The objective of this research is to develop an improved test procedure and a new apparatus to address the shortcomings of the existing aging techniques. The procedure should meet the following requirements: non-prohibitive cost, similar testing time and aging effect to the RTFOT, capable of producing up to 200 g of aged material per test, no prolonged handling of hot equipment or materials, and simplified cleanup.
Format:

PDF
Funding:

0-1742
Download URL:

https://rosap.ntl.bts.gov/view/dot/82943/dot_82943_DS1.pdf
File Type:

[PDF - 1.10 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:d29e511867ec95917f850f80689de9ecb09cc58dae8ce9428dce24ef7c7e1da6ac6addc661499436f1542384d251246baf4bb8716a1b83406be6d6da45acc4fe

File Language:

English

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