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.
Область применения1.1 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.
| 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.