Selim UYSAL, Jed CAPPELLAZZİ, Jeffrey J. MORRELL

Potential for using borate mixtures as groundline preservative pastes

The potential for combining borates with differing degrees of water solubilities into pastesfor remedial treatment of surface decay on utility poles was investigated using a small blocktest. Pastes containing disodium octaborate tetrahydrate (DOT) as a component tended tobe most able to diffuse inward from the surface, but other borates with lower water solubilities,especially sodium tetraborate decahydrate and sodium tetraborate pentahydrate, movedinward at protective levels. Boron movement increased at the higher moisture level (60 %)and with prolonged incubation times (3 vs 6 weeks). The results suggest that combiningborates with differing water solubilities would be an effective method for producing bothimmediate protection against fungal attack coupled with prolonged slow release to limitrenewed fungal activity. Field trials are recommended to confirm these results.

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