DECAY AND TERMITE CONTROL INVESTIGATION--FINAL INSPECTION OF SPECIMENS AFTER 180 MONTHS EXPOSURE. RESULTS OF LONG-RANGE TESTS ON WOOD PRESERVATION

A 15-year investigation was initiated in 1957 in order to determine the long-range effects of termite attack and decay on wood as well as to evaluate the protective effects of various commercial preservatives of various retentions towards the reduction of termite attack and decay. The changes were observed and recorded annually of nearly 2,000 test specimens which reflected all the significant test variables of species of wood and type and retention of preservative. The results of these recorded observations have been analyzed and evaluated and conclusions derived, which are as follows: 1. Decay occurred to a greater extent and generally progressed faster than termite damage. 2. The results of this investigation indicated that coal tar creosote and the solution of creosote with coal tar or petroleum are the most effective preservatives; chromated zinc chloride and fluor-chrome-arsenate-phenol--type A afford the least protection against decay and termite attack. 3. The protection (as reflected in the average index rating) increases with the retention of the preservative in the specimens. 4. Untreated oak is somewhat more resistant to decay and termite attack than fir or pine, but only for a short time. 5. The results of this control test show that the life span of wood, when exposed to decay and termite attack environments, can be increased considerably by the application of the proper type and amount of preservative.

  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  USA  60605
  • Authors:
    • Somogy, C
  • Publication Date: 1974-9

Media Info

  • Pagination: p. 137-142
  • Serial:
    • AREA BULLETIN
    • Volume: 76
    • Issue Number: 649
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00072587
  • Record Type: Publication
  • Source Agency: AREA Bulletin
  • Report/Paper Numbers: Bulletin 649 Proceeding
  • Files: TRIS
  • Created Date: Dec 31 1974 12:00AM