UTILIZATION OF ASH FROM COAL-BURNING POWER PLANTS IN HIGHWAY CONSTRUCTION

STUDIES CONDUCTED AT WEST VIRGINIA UNIVERSITY HAVE SHOWN THAT THE ENGINEERING PROPERTIES OF BOTTOM ASH ARE COMPARABLE TO THOSE OF CONVENTIONAL CONSTRUCTION MATERIALS. NEVERTHELESS, BOTTOM ASH AND FLY ASH HAVE NOT BEEN WIDELY USED IN HIGHWAY CONSTRUCTION IN THE UNITED STATES. DURING THE PAST 3 YEARS, CONSIDERABLE EXPERIENCE HAS BEEN GAINED IN WEST VIRGINIA AND THE SURROUNDING STATES IN THE UTILIZATION OF COAL ASH IN HIGHWAY CONSTRUCTION. THE APPLICATIONS HAVE INCLUDED USE OF BOTTOM ASH OR FLY ASH OR BOTH IN NONSTABILIZED BASE COURSES, PORTLAND CEMENT AND BITUMINOUS STABILIZED BASE COURSES, BITUMINOUS SURFACE COURSES, LIGHTWEIGHT STRUCTURAL FILL, AND UNDERDRAIN FILTERS. IT WAS FOUND THAT ASH MATERIALS CAN BE USED STATISFACTORILY IN THESE APPLICATIONS PROVIDING THEIR UNIQUE PROPERTIES ARE RECOGNIZED AND APPROPRIATE CONSTRUCTION TECHNIQUES ARE EMPLOYED. IT IS SHOWN THAT THESE MATERIALS DO NOT ALWAYS FIT WITHIN THE FRAMEWORK OF EXISTING MATERIALS AND CONSTRUCTION SPECIFICATIONS AND THAT ADHERENCE TO THESE SPECIFICATIONS DOES NOT ALWAYS ENSURE SATISFACTORY PERFORMANCE. IN FACT, IN SOME INSTANCES BETTER PERFORMANCE AND GREATER ECONOMY WERE ACHIEVED WITH ASH MIXTURES THAT DID NOT MEET EXISTING SPECIFICATIONS. IF ASH IS TO BE USED EFFECTIVELY IN HIGHWAY CONSTRUCTION, NEW SPECIFICATIONS MUST BE DEVELOPED THAT TAKE INTO CONSIDERATION THE UNUSUAL PROPERTIES OF ASH AND THE SPECIALIZED CONSTRUCTION TECHNIQUES REQUIRED.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1973/430/430-004.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309021596
• Supplemental Notes:
  • Sponsored by Commitee on Mineral Aggregates. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Moulton, Lyle K
  • Seals, Roger K
  • Anderson, David A
• Conference:
  • 52nd Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1973-1-22 to 1973-1-26
• Publication Date: 1973

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 26-39
• Monograph Title: Utilization of waste materials and upgrading of low-quality aggregates
• Serial:
  • Highway Research Record
  • Issue Number: 430
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Base course (Pavements); Bituminous materials; Bottom ash; Fills; Fly ash; Road construction; Surface treating
• Old TRIS Terms: Bituminous surfacing
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00217937
• Record Type: Publication
• ISBN: 0309021596
• Files: TRIS, TRB
• Created Date: Dec 22 1973 12:00AM