How to improve the adhesion between mortar and wall for pre-mixed dry-mixed mortar?

[Shamil]

How to improve the adhesion between mortar and wall for pre-mixed dry-mixed mortar?

 

[Rony]

A sufficient amount of cement and additives are required if it is ordinary dry-mixed mortar(to provide water retention and thicken so that the cement can fully harden, and prevent excessive water absorption by the wall)

 

[Cassie]

The adhesion agent is important, but many places don’t use it.

It can slightly improve the formula of ordinary mortar and add a little polymer additive; sometimes, the formula can be optimized with a small amount.

 

[Ramon Doria]

Make sure the base surface is clean and make sure there is no problem brushing the adhesion agent, you can add some 10w cellulose ether and 301 starch ether.

 

[Ankur]

Initial viscosity should also greatly increase bond strength.

 

[Scott Kaplan]

Add some flyash and stone powder.

 

[Luis]

You can avoid hollowby starting from several aspects: 1. Increase the initial viscosity of the mortar; 2. Reduce the vertical flow of the mortar; 6. Control the powder rate of the sand 7. Reduce the amount of coarse sand