Subbase and subgrade performance investigation and design guidelines for concrete pavement.

Details

• Alternative Title:
  Project title: Alternatives to asphalt concrete pavement subbases for concrete pavement
• Creators:
  Jung, Youn su ; Zollinger, Dan G. ; Cho, Byoung Hooi ; Won, Moon ; Wimsatt, Andrew J.
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Subbase (Pavements)
  • Subgrade (Pavements)
  • Concrete pavements
  • Erosion
  • Pavements--Texas--Evaluation
  • Pavements, Asphalt concrete--Texas--Evaluation
• Publication/ Report Number:
  FHWA/TX-12/0-6037-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2007-Sept. 2009.
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  The main issue associated with this research is if cheaper alternatives can be configured for subbase ; construction. Subbase layers have certain functions that need to be fulfilled in order to assure adequate pavement ; performance. One key aspect is resistance to erosion, and assessment of each of these functions relative to different ; alternatives is key to understanding the capability of different alternatives to perform adequately. In this respect, this ; project was poised to examine the design assumptions associated with each alternative and provide design ; recommendations accordingly to include test methods and material specifications. ; This report describes some of the work accomplished by summarizing data on subbase performance and ; testing relative to concrete pavement subbase and subgrade erosion but mainly addresses guidelines for concrete ; pavement subbase design. Findings from field investigations are discussed to identify factors associated with erosion. ; An approach to mechanistically consider the erosion process was introduced and review of current design procedures ; was conducted to reveal how they address erosion. This review was extended to include erosion models described in ; the literature as a means to shed light on the relationship between measurable material properties and performance. ; Additionally, past and current design procedures relative to erosion were reviewed in terms of test methods, ; erosion models, and their utility to characterize subbase materials with respect to erosion resistance. With this ; information, a new test configuration was devised that uses a rapid tri-axial test and a Hamburg wheel-tracking device ; for evaluating erodibility with respect to the subbase type and degree of stabilization (cement content). Test devices, ; procedures, and results are explained and summarized for application in mechanistic design processes. A proposed ; erosion model was validated by comparing erosion predictions to erosion results. Several computer program analyses ; were conducted to assess the design and performance implications of different subbases alternatives. Guidelines are ; p rovided to promote economical and sustainable design of concrete pavement subbases.
  More +
• Format:
  PDF
• Funding:
  Project 0-6037
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24174/dot_24174_DS1.pdf
• File Type:
  [PDF - 3.97 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0450e7eb35a8e1954df7e6b4955845f36440cd60dc0c5777fc42d8b8ea1024e384d7fac793ad3f9c9b5f17b797a76305c2a98e211a91528bfe79c11822c82b4d