Standard Gypsum Accelerator
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For shortening the setting time of plasters and setting-type joint compounds
· Product is safe and easy to use
· Plaster Accelerator
provides slight adjustments to set for veneer and conventional plasters. |
| Description |
- Accelerators are additives that shorten the setting time of gypsum
plaster or setting-type joint compound. Adding an accelerator to the
mix causes gypsum crystals to form at a much faster rate; and the formulation
of these crystals is the setting process. Plaster Accelerator is intended
to provide a slight adjustment (10 to 30 minutes) to the setting time
for veneer and conventional plasters.
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| Directions |
- Application - An accelerator is an essential tool for applicator.
There is nothing wrong in using such an additive when it is essential
to speed up the set of plaster or setting-type joint compound to meet
specific job conditions. If required, use accelerators in dry form to
shorten gypsum setting times. Manufacturers add accelerator to plaster
to stabilize the setting time so that it stays with in the manufacturer
range when subject to normal job conditions. These conditions may vary
due to: Plaster exposure to moisture prior to mixing; contamination
or poorly graded aggregate; dirty mixing water; length of mixing time;
varying climatic conditions; and improper ventilation after application.
However, the primary use for accelerator on the job is to quicken the
setting time when the journeymen encounters a slower set than required.
- Four ounces of Accelerator reduces the set time by 30 minutes per
bag of veneer plaster product. Never add accelerator directly to the
water or mix it with water to form a solution before adding it to the
plaster mix. When used in this manner, its ability to accelerate is
significantly reduced. Instead, the accelerator should be sprinkled
in dry form into the mixer after the plaster has been added. For hand
mixing, dry accelerator can be added either to the dry mix or the plaster
slurry.
- Clean up and storage - Clean mixing containers and tools with water
immediately after use. Partially used container should be closed as
tightly as possible. Store material in a cool, dry place. Avoid direct
sunlight. Maintain temperature above 40oF (4oC).
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Technical Support Hotline: 212-367-7561 |
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