full details of this standard test method.
full details of this standard test method.
full details of this standard test method.
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I Beam Bond Quality Test ProcedureScope.This <strong>test</strong> <strong>method</strong> describes the procedure for the determination <strong>of</strong> bond quality in I- beams.ApparatusAll TestsThe following apparatus is required for all <strong>test</strong>s:a. A vice with jaws <strong>of</strong> at least 100mm in width.b. A light source, having a shade with a black, non-reflecting surface, fitted with a clearincandescent 150 W lamp or a 15 W fluorescent tube.c. A well-ventilated thermal oven with wire mesh shelves or other open material thatallows free internal circulation <strong>of</strong> air, and capable <strong>of</strong> maintaining a temperatureabove 100°C.ORA suitable microwave oven equipped with a cooling fan and cavity air exhaust.Water Immersion TestsThe following apparatus is required for water immersion <strong>test</strong>s:a. A water bath <strong>of</strong> sufficient size to accommodate <strong>test</strong> specimens up to 600mm x120mm and <strong>of</strong> temperature range appropriate to the type <strong>of</strong> bond (see Clause 7.2 <strong>of</strong>AS/NZS2098.2 - 2006)Notes:i. For temperatures <strong>of</strong> 15°C to 20°C, temperature control is not usually necessary.ii. For a temperature <strong>of</strong> 70°C, adequate control and circulation equipment isnecessary to ensure that the temperature <strong>of</strong> the bath does not vary by morethan ± 1°C from the prescribed temperature.iii. For a temperature <strong>of</strong> 100°C, only heating is normally essential, but a constantlevel attachment and a means <strong>of</strong> adjusting the rate <strong>of</strong> heating are desirable.b. Racks or other means <strong>of</strong> keeping all <strong>test</strong> specimens separated and completelyimmersed in water. They shall not contaminate the water or be corroded by it.Steaming TestsThe following apparatus is required for steaming <strong>test</strong>s:a. An adequately drained autoclave or similar vessel <strong>of</strong> sufficient size to accommodate<strong>test</strong> specimens up to 600mm x 120mm, designed to withstand safely a pressure <strong>of</strong> at
least 220kPa above atmospheric pressure and capable <strong>of</strong> controlling pressure within± 7kPa <strong>of</strong> the prescribed pressure.b. Racks or other means <strong>of</strong> keeping all <strong>test</strong> specimens separated and completelyimmersed in steam. They shall not contaminate the steam or be corroded by it.Test SpecimensA minimum <strong>of</strong> four <strong>test</strong> pieces shall be cut from each beam. Prior to cutting, and “Indicator Mark”must be drawn towards the top <strong>of</strong> one side <strong>of</strong> the beam. This will allow the orientation <strong>of</strong> the cut<strong>test</strong>s pieces to be identified. Test pieces shall be 100mm in length by the <strong>full</strong> depth <strong>of</strong> the beam.Each <strong>test</strong> piece shall be marked to identify it with the sample beam from which it was cut. Two <strong>test</strong>pieces shall be subjected to the dry treatment detailed in Section 0 and two <strong>test</strong> pieces shall besubjected to the wet treatment as detailed in Section 0. The dimension and Wet and Dry <strong>test</strong> piecesare shown in the diagram below :Preparation <strong>of</strong> Test SpecimensDry TestTest specimens for the dry <strong>test</strong> shall be <strong>test</strong>ed in the ‘as cut’ condition.Boil, Steam and Soak Tests. (Wet Tests)For the treatment <strong>of</strong> all <strong>test</strong> specimens, the water or steam must have free access to all edges <strong>of</strong>every <strong>test</strong> specimen. All <strong>test</strong> specimens shall be free <strong>of</strong> any edge coating or sealing that is likely toprevent or hinder the entry <strong>of</strong> water or steam into the edges. Preparation procedures for thevarious types <strong>of</strong> bonds shall be as given in clauses 7.2.2 to 7.2.5 <strong>of</strong> AS/NZS 2098.2 - 2006.
Testing Procedure.FIGURE ONEStep 1. Collect the dry and wet <strong>test</strong>ed specimens.Step 2. Place the flange <strong>of</strong> the sample into the vice (refer figure one) and tighten.Step 3. Lift up the end <strong>of</strong> the <strong>test</strong> piece until the joint fractures at the flange/web interface.Step 4. Repeat the procedure for all joints A-D.Step 5. Reassemble the beam into its original order and for wet <strong>test</strong>ed pieces place themin a drying oven until dry.
Evaluation <strong>of</strong> Bond QualityEvaluate the bond quality <strong>of</strong> the flange/web interface <strong>of</strong> all joints in accordance with Clause 9 <strong>of</strong>AS/NZS2098.2 - 2006.Pass Fail Criteria – Individual Glue Line QualityIndividual glue lines are evaluated in pairs. A pair is either a pair <strong>of</strong> dry bond <strong>test</strong> pieces, or a pair <strong>of</strong>wet bond <strong>test</strong> pieces. The following image explains the pass criteria for individual glue lines <strong>of</strong> pairs :Pass Fail Criteria – Average Glue Line QualityTo pass the bond quality <strong>test</strong>s the average <strong>of</strong> both wet <strong>test</strong>ed and dry <strong>test</strong>ed samples must be above5.0 with no individual glueline average less than 2 when assessed in accordance with the bondquality scale detailed in Clause 9 <strong>of</strong> AS/NZS2098.2 - 2006.
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