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Evaluation of polystyrene as a protective of wood in sea-water
1986 - IRG/WP 4129
A test is described on the biological protection of wood by treatment with polystyrene. The results, obtained in marine trials, after 18 months, show that the treatment with polystyrene is not all that effective in preventing the attack of marine borers.
A Gambetta


IRG/COIPM INTERNATIONAL MARINE TEST - to determine the effect of timber substrate on the effectiveness of water-borne salt preservatives in sea-water. Progress Report 9: Report of third inspection (2 years) in Italy
1980 - IRG/WP 461
The wood samples were submerged in the sea at Follonica, Italy, in April 1977. Follonica, latitudine 42°55' North and longitude 10°45' East, is situated on the Tyrrhenian sea. The recorded temperature varies between 13°C to 25°C, salinity 37-38% and pH about 8. The inspections were carried out after 6 months (10/1977), 1 year (4/1978) and 2 years (4/1979).
A Gambetta, E Orlandi


IRG/COIPM INTERNATIONAL MARINE TEST - to determine the effect of timber substrate on the effectiveness of water-borne salt preservatives in sea-water. Progress Report 11: Report of fourth inspection (3 years) in Italy
1981 - IRG/WP 471
The wood samples of Alstonia scholaris, Fagus sylvatica, Pinus sylvestris were submerged in the sea at Follonica, Italy, in Apri1 1977. Follonica, latitude 42°55' North and longitude 10°45' East, is situated on the Tyrrhenian coast. The recorded temperature varies from 13°C td 25°C, salinity 37- 38%. and pH about 8. The inspections were carried out after 6 months (10/1977), 12 months (4/1978), 24 months (4/1979) and 36 months (4/1980).
A Gambetta, E Orlandi


IRG/COIPM INTERNATIONAL MARINE TEST - to determine the effect of timber substrate on the effectiveness of water-borne salt preservatives in sea-water. Progress Report 17: Report of fifth inspection (4 years) in Italy
1983 - IRG/WP 4103
The wood samples of Alstonia scholaris, Fagus sylvatica, Pinus sylvestris were submerged in the sea at Follonica, Italy, in April 1977. Follonica, latitude 42°55' North and longitude 10°45' East, is situated on the Tyrrhenian coast. The recorded temperature varies from 13°C to 25°C, salinity 37-38% and pH about 8. The inspections were carried out after 6 months (10/1977), 12 months (4/1978), 24 months (4/1979), 36 months (4/1980) and 48 months (4/1981). The grading categories of borers attack were: 0 - no detectable attack; 1 - slight attack; 2 - moderate attack; 3 - severe attack; 4 - destroyed and removed. All the untreated samples were destroyed by both Teredines and Crustacean borers after 6 months of submergence. The borers observed on untreated samples were: Nototeredo norvagica Splengler, Bankia carinata Gray, Limnoria tripunctata Menzies and Chelura terebrans Philippi. All the samples of Alstonia scholaris and Pinus sylvestris treated with CCA and CCB at all the concentrations used, were not attacked by Teredines, some samples of Alstonia scholaris showed a light attack by Crustacean borers at the lowest concentration (3%). The samples of Fagus sylvatica impregnated with CCA and CCB at the 3% concentration were attacked by Teredines and Crustacean borers (CCA: rating from light to moderate; CCB rating light). Some samples treated with CCA and CCB at 6% concentration showed a very light attack and all the samples treated at 10% concentration were not attacked by marine borers.
A Gambetta, E Orlandi