A Must-Know for Technicians: How to Choose the Right Mortar for Each Application?

With the continuous development of the construction industry and the changes in market demand, anti-crack mortar and plastering mortar have been widely used in the construction industry. Friends who don’t know these two kinds of mortars can easily confuse them. In fact, anti-crack mortar and plastering mortar are both suitable for leveling materials for internal and external walls. They can be used for the base surface treatment of the wall to play the role of leveling, protection and anti-erosion.

So, what is the difference between anti-crack mortar and plastering mortar? Next, let's learn about it with the editor!

Anti-Crack Mortar

Anti-cracking mortar is a mortar made of anti-cracking agent made of polymer emulsion and admixture, cement and sand mixed with water in a certain proportion, which can meet a certain deformation and remain without cracking.

Features

• layer is corrosion-resistant and alkali-resistant, and can prevent the surface from being damaged due to climate reasons.
• Waterproofing agents have great adhesion to various concrete, stone bricks and other materials.
• The waterproof layer formed by mortar cement and waterproofing agent is wear-resistant.
• When the mortar waterproofing agent is impacted, the material fibers on it can prevent it from cracking and it has a good impact resistance effect.
• The waterproofing agent will react chemically with the emulsion particles and cement, which can reduce the gaps in the cement mortar and prevent water from penetrating inside, so it has good waterproof properties.
• Waterproofing agents are made of liquid waterproofing materials such as asphalt and tar, which not only do not pollute the environment but also do not cause harm to human health.

Plastering Mortar

Plastering mortar is made by uniformly mixing cement, quartz sand, polymer binder and a variety of additives through mechanical mixing.

Features

• The plaster layer does not bear any load.
• The plaster layer and the base layer must have sufficient bonding strength to prevent them from falling off or cracking during construction or under long-term self-weight and environmental influences.
• The finishing layer is mostly thin and applied in layers. The surface layer is required to be flat, smooth, delicate and beautiful.
• It is mostly used in dry environments and exposed to the air over a large area.

Differences

1.Different Uses：The facing mortar is used on the insulation board system and the surface layer of the thin plaster system; the anti-cracking mortar is the surface plaster layer used on materials such as polystyrene particles and glass beads.

2.Different Flexibility：The flexibility of plastering mortar is better than that of anti-cracking mortar and it is not easy to crack.

3.Different thickness:The thickness of the anti-cracking mortar construction is relatively thick, the plastering mortar is a thin plaster, and the plastering mortar also has requirements for the board breaking rate.