FREEZE/THAW PROBLEMS FROM THE STATE PERSPECTIVE. STRATEGIC HIGHWAY RESEARCH PROGRAM PRODUCTS. PROCEEDINGS OF A SPECIALTY CONFERENCE SPONSORED BY THE HIGHWAY DIVISION OF THE AMERICAN SOCIETY OF CIVIL ENGINEERS AND THE FEDERAL HIGHWAY ADMINISTRATION. DENVER MARRIOTT CITY CENTER HOTEL, DENVER, COLORADO, APRIL 8-10, 1991

Iowa Department of Transportation has contended that D-cracking is a freeze/thaw failure resulting from a combination of chemical reactions and adverse pore systems. Current tests for D-cracking susceptibility are described. Pavement performance and aggregate service records in Iowa are described, as well as laboratory research. Iowa research continues to support the postion that both the aggregate pore system and the chemical trace elements in carbonates are important factors in the longevity of portland cement concrete pavement produced with that aggregate. X-ray diffraction and X-ray fluorescence analysis of carbonate aggregate along with a pore system analysis are now used by the Iowa DOT to predict the quality of aggregate for pcc pavement.

Media Info

  • Features: References;
  • Pagination: p. 28-30
  • Monograph Title: STRATEGIC HIGHWAY RESEARCH PROGRAM PRODUCTS. PROCEEDINGS OF A SPECIALTY CONFERENCE SPONSORED BY THE HIGHWAY DIVISION OF THE AMERICAN SOCIETY OF CIVIL ENGINEERS AND THE FEDERAL HIGHWAY ADMINISTRATION. DENVER MARRIOTT CITY CENTER HOTEL, DENVER, COLORADO, APRIL 8-10, 1991

Subject/Index Terms

Filing Info

  • Accession Number: 00607946
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 30 2000 12:00AM