CONCEPT OF INTERNALLY SEALED CONCRETE

A promising new process for internally sealing concrete, which prevents the intrusion of chlorides from decicing operations or marine environments and the subsequent deterioration of the concrete, was developed by Monsanto Research Corporation under an FHWA contract. The work is described in Report FHWA-RD-75-20, "Internally Sealed Concrete," by G.H. Jenkins and J.M. Butler. This report is intended as a supplement to the above publication. The work was performed to further document the concept of internally sealed concrete and to provide independent evidence that the wax particles which are mixed into the fresh concrete do, upon heating, migrate into the capillaries and voids of the concrete matrix. The scanning electron microscope and an energy dispersive x-ray attachment were used to study heated and unheated concrete containing 2 percent montan wax. The conclusion was that montan wax, when melted, will migrate within, and thourghly coat, the surrounding concrete matrix. /Author/

  • Supplemental Notes:
    • Staff effort supplementing administrative research contract DOT-FH-11-7884 "Internally Sealed Concrete" in FCP Project 4B, "Eliminate Premature Deterioration of Portland Cement Concrete".
  • Corporate Authors:

    Federal Highway Administration

    Engineering Research and Development Bureau, 1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • CLEAR, K C
    • Ornsby, W C
  • Publication Date: 1975-3

Media Info

  • Features: Photos;
  • Pagination: 17 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00098445
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-RD-75- 21 Intrm Rpt., FCP 34B1-202
  • Files: NTIS, TRIS, USDOT
  • Created Date: Sep 30 1975 12:00AM