A STUDY OF FLY ASH AS A MATERIAL FOR USE IN CONCRETE

A CHANGE IN THE FLY ASH SECTION OF THE ALABAMA HIGHWAY SPECIFICATIONS REQUIRED THE AMOUNT PASSING THE NO. 325 MESH TO BE A MINIMUM OF 75% AND THE LOSS AT 1100 F TO BE A MAXIMUM OF 6%. THIS CHANGE HAD THE EFFECT OF EXCLUDING ALL THE SOURCES IN ALABAMA THAT WERE USING MECHANICAL SEPARATORS, LEAVING ONLY TWO SOURCES, ONE OF WHICH WAS NOT AVAILABLE. AN EXTENSIVE INVESTIGATION WAS UNDERTAKEN TO DETERMINE WHETHER THE SPECIFICATION WAS EXCLUDING SOME FLY ASH SOURCES AS GOOD AS OR BETTER THAN THE ONE NOW BEING USED. FREEZE--THAW AND COMPRESSIVE, FLEXURAL, AND TENSILE STRENGTH TESTS WERE RUN ON MIXES AND BEAMS OF VARIOUS COMPOSITION AND AGE. TEST PROCEDURES AND RESULTS ARE REPORTED.

Media Info

  • Pagination: 53 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00213882
  • Record Type: Publication
  • Report/Paper Numbers: HPR 51
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: May 10 1971 12:00AM