ASTM D2842 PDF

ASTM D Standard Test Method for Water Absorption of Rigid Cellular Plastics. ASTM D Water Absorption – Designation: D – 01 Standard Test Method for Water Abs. ASTM D 06 Water Absorption Test Method – Download as PDF File .pdf), Text File .txt) or read online.

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Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Material Polyisocyanurate Thickness 3 in. Water absorbed into the object lowers the buoyant force by increasing the weight of the sample. The size of the cells in the three normal directions can then be measured to fully represent the cell. D28422 and Bias 8 D — This procedure should be used for materials that exhibit this type of behavior. Combination of Eq X1.

ASTM D Water Absorption_百度文库

Adjust the water level to maintain a 5. Be sure that satm submerged jig is free of trapped air bubbles. This procedure shall be used for materials that exhibit this type of behavior. Link to Active This link will always route to the current Active version of the standard.

BS EN Footw Users of this standard are expressly advised that determination of asstm validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. ASTM D water c Any test specimen preparation, conditioning, dimensions, or testing parameters covered in the materials specication, or both, shall take precedence over those mentioned in this test method.

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For the convenience of the user, Committee D20 has highlighted those changes that may impact aetm use of this test method. Any test specimen preparation, conditioning, dimensions, or testing parameters covered in the materials specification, or both, shall take precedence over those mentioned in this test method. Then divide the length of the line 3.

ASTM D2842 – 12

This is accounted for by basing all buoyant force calculations on the volume of the wet specimen at the conclusion of the immersion period. Work Item s – proposed revisions of this standard. Procedure A shall be used for d22842 that either experience rapid water absorption or that show an increase in volume during the exposure period, or both.

It is the responsibility of the user of f2842 standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. By knowing the volume and initial dry weight of the sample, the initial buoyant force can be calculated or the initial buoyant force can be determined by direct measurement. For each material, all the samples were prepared at one source, but the individual specimens were prepared at the laboratories which tested them.

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Results by this test method cannot be used to compare the resistance of cellular plastics to water vapor transmission and subsequent condensation within the cells.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

An acceptable procedure, in this case, is to take cell-size slices from two perpendicular planes of the test specimen. This test method provides the option to ignore this variable with cellular plastics estimated to have an average cell diameter of 0. An average cell diameter of 0.

Material Extruded Polystyrene Thickness 3 in. The nal buoyant force at the end of the immersion period is measured with an underwater weighing assembly. This test method accounts for this error in that all calculations are based on the true specimen volume. Last previous edition D — Focus the projector on the wall or screen so that sharp image shadowgraph results.