AS 2753-2018 pdf free.Adhesives – For bonding gypsum plaster linings to wood and metal framing members.
3.1 Test materials
3.1.1 Plaster lining
The tests specified in this Standard use gypsum plasterboard in accordance with AS/NZS 2588 as a gypsum lining.
NOTE Other gypsum linings, such as fibre reinforced gypsum plaster sheet, may also be used.
3.1.2 Framing members
3.1.2.1 Timber
Timber species used for framing members shall be radiata pine (knot free clears) as outlined in Table 2 of NZS 3602 or in accordance with AS 1720.2. The bonding face of test specimens shall be dressed. Both preservation treated and untreated specimens are permitted. The following applies to treated specimens:
(a) For Australia, specimens shall be treated in accordance with AS 1604.11 to Hazard Class H2.
(b) For New Zealand, specimens shall be treated in accordance with NZS 3640 to Hazard Class 111.2.
The treatment type and method of manufacturer shall be specified in the report.
NOTE 1 Dressed timber has been machine finished and is smooth.
NOTE 2 Some timber treatment additives may detrimentally affect adhesive bond performance, refer with treatment supplier.
3.1.2.2 Metal
Material framing material used in this Standard shall conform to AS 1397.
3.2 Consistency/sag resistance
The adhesive shall be uniform, homogenous mixtures, free of lumps exceeding 1 mm diameter and be of uniform consistency. When applied to a wall orceiling framing member in accordance with AS/NZS 2589, the adhesive shall exhibit a consistency capable of ensuring non-sagging properties. Its sag resistance shall be determined in accordance with the method in Appendix A. The sag resistance shall be such that the adhesive does not drop off from the plasterboard for at least 15 mm at temperatures of 4 °C ± 2 °C, 23 °C ± 2 °C and 45 °C ± 2 °C.
3.3 Open assembly time
The adhesive shall not dry out quickly and shall remain workable for at least 30 mm, to enable the user sufficient time to apply the gypsum lining. The ability of the adhesive to transfer after a specified open assembly time shall be determined in accordance with the method in Appendix B. The sum of the area where adhesive transfer has occurred and where liner-board failure has occurred shall exceed 75 % of the adhered surface of the 50 mm x 50 mm gypsum plasterboard piece.
3.4 Wetting characteristics
The adhesive shall wet the framing member. The wetting characteristics of the adhesive shall be determined in accordance with the method in Appendix C. The adhesive shall fail 100 % cohesively.AS 2753 pdf download.