Report on particleboard in concrete formwork : stage 3 (Lab tests) : to Australian Particleboard Research Institute - APRI Project no. 4-02

"Stage 3 of the ongoing particleboard formwork project evolved out of the recommendations of an Expert Working Group. Tests examining the sealing characteristics of foam rubber edge tape found equally satisfactory performance when used with phenol-faced HMR particleboard as with faced formply. Weathering of faced and unfaced HMR board and of faced formply was studied using two sets of exposure tests of 5 months and of 2 months duration. The timber frames supporting the boards employed different joist and nail spacings. Corner lift and bowing of the particleboard panel was observed in the first set of tests, but was eliminated in the second set by using joists at 400mm centres, and nails at 200mm centres."--p. (iii).