Wp

1,469 views

Published on

0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,469
On SlideShare
0
From Embeds
0
Number of Embeds
10
Actions
Shares
0
Downloads
40
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Wp

  1. 1. Wood Preservation GOOD FOR WOOD BY SHRIKRISHNA KULKARNI
  2. 2. INTRODUCTION <ul><ul><li>WOOD IS PRECIOUS. SAVE IT </li></ul></ul><ul><ul><li>Composition of wood </li></ul></ul><ul><ul><li>Properties Of wood </li></ul></ul><ul><ul><li>Enemies of wood </li></ul></ul><ul><ul><li>Environment and insects </li></ul></ul><ul><ul><li>Why preservation of wood </li></ul></ul><ul><ul><li>Types of wood preservation </li></ul></ul><ul><ul><li>Types of wood preservatives </li></ul></ul><ul><ul><li>Features of wood preservative </li></ul></ul><ul><ul><li>Major manufacturers </li></ul></ul>
  3. 3. <ul><li>Wood can’t be manufactured synthetically </li></ul><ul><li>Wood is rare and precious </li></ul><ul><li>Wood is eco friendly </li></ul>Save wood- save earth
  4. 4. Composition of wood <ul><li>Wood is composed of minute, hollow fibers </li></ul><ul><li>Some wood is composed of short, hollow brick shaped cells </li></ul><ul><li>Zone of lighter wood is called sapwood </li></ul><ul><li>Zone of darker wood is called heartwood </li></ul><ul><li>Through the fibers the tree transports water and nutrients vertically within the tree </li></ul><ul><li>Wood is composed of a complex mixture of substances but the main constituent of all wood is a complex sugar called cellulose </li></ul>
  5. 5. Properties of wood <ul><li>Wood may be destroyed and damaged by fungi, insects and marine borers </li></ul><ul><li>Under proper use conditions, wood can give centuries of good service </li></ul><ul><li>Under unfavorable conditions wood can be crushed in powder </li></ul><ul><li>Wood is affected by environment factors such as temperature,moisture,winds,salty air, water etc </li></ul><ul><li>Wood can be cut,mould,bend,chip,stick etc </li></ul>
  6. 6. Wood enemies <ul><li>Water,moisture,wind,salts,chemicals </li></ul><ul><li>Wood- inhabiting fungi- feed on living or dead wood and produce spores (microscopic seeds) </li></ul><ul><li>Spores can infect moist wood </li></ul><ul><li>Fungi need favorable temperature and moisture content </li></ul><ul><li>Types of fungi- wood decay fungi </li></ul><ul><li>sap staining fungi </li></ul><ul><li>decay fungi grows in interiors of wood </li></ul><ul><li>Fungi break down the cellulose component of wood </li></ul>
  7. 7. Wood enemies- contd. <ul><li>Wood decay fungi types </li></ul><ul><li>Brown rots </li></ul><ul><li>White rots </li></ul><ul><li>Soft rots </li></ul><ul><li>Effects of fungi </li></ul><ul><li>Excessive wood shrinkage </li></ul><ul><li>Cross grain cracking </li></ul><ul><li>Powder </li></ul><ul><li>Chemical stains – chemical changes in wood during processing or seasoning of wood </li></ul>
  8. 8. Wood enemies contd.- <ul><li>Insects </li></ul><ul><li>Termites, carpenter ants and beetles </li></ul><ul><li>Beetles </li></ul><ul><li>Powder post beetles </li></ul><ul><li>Anobiid beetles </li></ul><ul><li>Bostrichid borers </li></ul><ul><li>Carpenter ants </li></ul><ul><li>Round headed and flat headed beetles </li></ul><ul><li>Marine borers </li></ul>
  9. 9. Why wood preservation <ul><li>To overcome environmental effects and insect control </li></ul><ul><li>To increase life span of wood </li></ul><ul><li>To preserve and protect wood </li></ul><ul><li>To maintain natural resources of wood </li></ul>
  10. 10. Types of wood preservation <ul><li>Moisture control and temperature control- Basic preservation </li></ul><ul><li>Drying - kiln drying and air drying </li></ul><ul><li>Chemical control </li></ul><ul><li>vacuum pressure treatment </li></ul><ul><li>Mixing with glue </li></ul><ul><li>Dipping </li></ul><ul><li>Spray application </li></ul><ul><li>Brush application </li></ul><ul><li>impregnation </li></ul>
  11. 11. Types of wood preservative <ul><li>Solvent borne </li></ul><ul><li>Creosote base </li></ul><ul><li>Copper base- c uNAP,ACQ,HDO,AZOLE,ACC,CN SL </li></ul><ul><li>WATER BORNE </li></ul><ul><li>Copper chrome arsenic </li></ul><ul><li>Copper chrome boron </li></ul><ul><li>Acid cupric chrome </li></ul><ul><li>Zinc base </li></ul><ul><li>Oxine copper </li></ul><ul><li>Copper naphthenate </li></ul><ul><li>Silicates </li></ul><ul><li>Glycol base </li></ul>
  12. 12. Characteristics of wood preservative <ul><li>Effectiveness </li></ul><ul><li>Toxicity </li></ul><ul><li>Broad spectrum </li></ul><ul><li>Eco friendly </li></ul><ul><li>Marine pollutant </li></ul><ul><li>Aquatic poisonous </li></ul><ul><li>Fixation capacity </li></ul><ul><li>Penetration capacity </li></ul><ul><li>Leaching in soil and water </li></ul><ul><li>Retention capacity </li></ul><ul><li>Distribution in the wood </li></ul><ul><li>Availability </li></ul><ul><li>Economical </li></ul>
  13. 13. Wood Preservative Associations and Institutes <ul><li>American wood preserver’s association AWPA </li></ul><ul><li>Wood protection association </li></ul><ul><li>European wood preservative manufacturer's association </li></ul><ul><li>Wood preservative science council WPSC </li></ul><ul><li>Institute of wood sciences and technology,Bangloe </li></ul><ul><li>Leonard wood Institute, USA </li></ul><ul><li>Wood Institute of California </li></ul><ul><li>Forest Research Institute, Dehradun </li></ul><ul><li>South African wood preserver’s association </li></ul>
  14. 14. Major manufacturers <ul><li>Merichem Ltd.USA </li></ul><ul><li>Valhalla Wood Preservatives Ltd. USA </li></ul><ul><li>Wolman,USA </li></ul><ul><li>Solignum, UK </li></ul><ul><li>TWP, USA </li></ul><ul><li>Otter Ind. Malaysia </li></ul><ul><li>Rockwood, Germany </li></ul><ul><li>Dattashri Enterprises, India </li></ul><ul><li>Lada organics, India </li></ul><ul><li>Pidilite Industries, India </li></ul><ul><li>Ascu hickson, India </li></ul>
  15. 15. Termites and borers
  16. 16. Carpenter ants
  17. 17. Beetles
  18. 18. Fungi Decay
  19. 19. Dry Rot Fungi
  20. 20. Brown rot fungi
  21. 21. Blue stain fungi
  22. 22. Wood preservation plant
  23. 23. Thank you

×