U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Determining Optimum Asphalt Content With the Texas Gyratory Compactor

File Language:
English


Details

  • Creators:
    Aschenbrener, Timothy B.
  • Corporate Creators:
    Colorado. Department of Transportation
  • Corporate Contributors:
    United States. Department of Transportation. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    CDOT-DTD-R-93-23
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    United States ; Colorado
  • Edition:
    Final Report
  • Corporate Publisher:
    Colorado. Department of Transportation
  • Description:
    A recent change from the California kneading compactor to the Texas gyratory compactor has resulted in significantly lower optimum asphalt contents. Additionally, only one laboratory compactive effort has been used in Colorado regardless of traffic or high temperature environment. Adjustments are being made to the Colorado's hot mix asphalt design procedure to address these concerns. It was decided to use results from the recently acquired European equipment to assist with the adjustments. Additionally, results were used from three other sources: 1) the previously used California kneading compactor, 2) samples from older pavements that were recompacted in the Texas gyratory, and 3) experimental field projects that used the recommended end-point stresses. Optimum asphalt contents need to be determined using varying laboratory compactive efforts that correspond to the various traffic and environmental conditions in Colorado. The recommendations presented in this report include the variable end-point stresses for the Texas gyratory to obtain the optimum asphalt content along with the traffic and environmental categories to assist designers on the appropriate selection of the specified end-point stress. Additionally, minimum Hveem stability values, minimum voids in the mineral aggregate, and an acceptable range for voids filled with asphalt are included.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/93882/dot_93882_DS1.pdf
  • File Type:
    Filetype[PDF - 3.22 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha-512:3997617d95e357cae92701fa7c8698ef8a6a1c53dbdeb92834b61aa3620924f95725379fb665aa2595ea9f054c4b33a16f843528b207134fc6f1c736eac967b4
PREVIOUS
File Language:
English
ON THIS PAGE
Details
 Found an issue?
Send us an email at:
publishinghd@cdc.gov
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP