Abstract
These test methods cover the physical testing of joint treatment materials such as joint compound, paper joint tape, glass-mesh joint tape, and an assembly of joint compound and paper joint tape. These materials are used in gypsum board construction. The test methods are detailed for the following: joint compound tests—for viscosity, shrinkage, check cracking, and putrefaction; joint tape tests—for tensile strength, width, and thickness; paper joint tape tests—for dimensional stability; assemblages of paper joint tape and joint compound—for bond of paper joint tape to joint compound and cracking of joint compound at tape edges; and glass-mesh joint tape test—for skewness.
Scope
1.1 These test methods cover the physical testing of joint compound, paper joint tape, glass-mesh joint tape, and an assembly of joint compound and paper joint tape.
1.1.1 Joint treatment materials are specified in Specification C475/C475M.
1.1.2 The joint treatment material described in this standard are for use with gypsum board installed in accordance with Specification C840.
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| Section |
| Joint Compound Tests: |
|
|   Viscosity | |
|   Shrinkage | |
|   Check Cracking | |
|   Putrefaction | |
| Joint Tape Tests: |
|
|   Tensile Strength | |
|   Width | |
|   Thickness | |
| Paper Joint Tape Tests |
|
|   Dimensional Stability | |
| Assemblages of Paper Joint Tape and Joint Compound: |
|
|   Bond of Paper Joint Tape to Joint Compound | |
|   Cracking of Joint Compound at Tape Edges | |
| Glass-Mesh Joint Tape Test |
|
|   Skewness |
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in brackets are mathematical conversions to SI units that are provided for information only and are not considered standard.
