EXERCISE CAUTION IN USING FLY-ASHES

VERY LITTLE IS KNOW ABOUT THE STRENGTH OF A CONCRETE CONTAINING FLY ASH AND THE HAZARDS CONNECTED WITH THE VARIOUS TECHNIQUES FOR LAYING SUCH CONCRETES. THE PRESENT PAPER DEALS WITH DAMAGES TO CONCRETE CONTAINERS FOR THE INDUSTRIAL WASTES OF A TANNERY, ORIGINATING FROM INAPPROPRIATE CONSTRUCTION FROM A CONCRETE CONTAINING FLY ASH. THE DAMAGE DID NOT RESULT FROM ACTION OF THE SULFURIC ACID, ARSENIC SULFIDE, AND ALUMS --- ON THE CONTRARY, THE FLY ASH EFFECTIVELY PROTECTED THE TANK AGAINST CHEMICAL DECAY --- BUT RATHER FROM LEAKAGES, OCCURING ALONG THE LINES OF CONCRETING INTERVALS, THAT HAD BEEN COMPACTED BY VIBRATION. ANALYSIS OF THE DISTINCT LAYERS, WHICH HAD SEPARATED DURING VIBRATION, SHOWED THEM TO CONSTITUTE AN ISOLATED PASTE CONSISTING ALMOST ENTIRELY OF ASH. IT IS SHOWN HOW THIS CONDITION CAN BE ATTRIBUTED TO THE CONSTRUCTION METHOD AND PRACTICE USED FOR THE TANK, WHICH DID NOT TAKE INTO ACCOUNT THE PECULIARITIES OF FLY-ASH CONCRETE. SEVERAL RECOMMENDATIONS ARE MADE ABOUT CONSTRUCTION PRECAUTIONS TO BE TAKEN WHEN FLY-ASH CONCRETE IS USED.

  • Supplemental Notes:
    • VOL 41 NO 9, 10 PP 46-51
  • Corporate Authors:

    Polish Union of Building Engineers and Technicians

    Czackigo 3-5
    Warsaw,   Poland 
  • Authors:
    • Braun, K
  • Publication Date: 1969

Media Info

  • Serial:
    • Building Review
    • Publisher: Polish Union of Building Engineers and Technicians

Subject/Index Terms

Filing Info

  • Accession Number: 00214227
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 5 2003 12:00AM