Transcript Preparing and Mixing Material in the Workplace

Preparing and Mixing Material in the Workplace
Apply Plaster Materials to Internal Backgrounds
Prepare and mix materials
Understand the different types of products and how they should be mixed
A Saint-Gobain company
Private and Confidential
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Preparing and Mixing Materials in the Workplace
Aims
To introduce materials and how they should be mixed safely
and correctly
Objectives
The learners should gain knowledge of materials and the
different ways they should be mixed
A Saint-Gobain company
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Preparing and Mixing Materials in the Workplace
Introduction:
What do you know about mixing materials ?
Can you answer the following
1.List four types of lightweight undercoat plaster.
2.State the quality of water required for mixing plaster.
3.List the correct PPE required when mixing plaster.
4.List two reasons why plaster would set quickly.
5.What voltage is used on site when mixing plasters.
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Private and Confidential
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Preparing and Mixing Materials in the Workplace
Introduction
When mixing materials it should be done with health and safety
in mind, so should be carried out in a well ventilated area and
using the correct PPE.
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Preparing and Mixing Materials in the Workplace
Preparation:
Before mixing of any materials can commence
the mixing area must be prepared.
Materials should be stored correctly to avoid
contamination.
A supply of clean water should be readily
available.
The surrounding areas should be protected to
avoid unnecessary damage.
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Preparing and Mixing Materials in the Workplace
Mixing:
When mixing in a plasterers bath or trough the
correct amount of water should be poured into
the bath and the material added to the water.
Using a larry or shovel. Pull the material through
the water until the material reaches a consistent
mix.
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Preparing and Mixing Materials in the Workplace
Mixing in a Bucket or a Tub
Added the correct amount of water,
add the plaster and allow to settle,
Mix with a whisk or plunger,
If required add more plaster to reach a satisfactory
consistency,
Be careful not to over mix the plaster as this will have an
adverse effect on the set !
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Preparing and Mixing Materials in the Workplace
Mixing using a cement mixer
Start the mixer
Add water to the mixer
Add half the required amount of sand
Add half the required amount of cement/lime
Add the rest of the sand
Add the remaining Cement/lime
Add additional water until the required consistency is
reached
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Private and Confidential
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Preparing and Mixing Materials in the Workplace
You should now have the knowledge to complete the following
1.List four types of lightweight undercoat plaster.
2.State the quality of water required for mixing plaster.
3.List the correct PPE required when mixing plaster.
4.List two reasons why plaster would set quickly.
5.What voltage is used on site when mixing plasters.
A Saint-Gobain company
Private and Confidential
10