Anti-crack plaster mortar formula

[Roy]

Detail:
Cement Po42.5: 300
Quartz Sand: 500
coal ash: 100
Heavy Calcium Carbonate: 100
10w cellulose ether: 3
Wood Fiber: 4
Redispersible Polymer powder: 18
pp fiber: 1
This anti-cracking formula, please enlighten

 

[Cassie]

Your formula should be a plaster mortar that matches the expanded polystyrene panel. The amount of cement is a little higher; about 280 is enough! Coal ash and Heavy Calcium Carbonate can select as the same, add 100 kg, and replace the remaining 100 kg with quartz sand. The usage of putting 100,000 Hydroxy propyl methyl cellulose is too high, which is higher than the adhesive mortar; it must be sticky and cannot be constructed; generally, 1.5-2 kg is enough. Add moisture-repellent, bentonite, and starch ether to be more advanced.

 

[Chanliss]

This is a formula with basically no reference value
What formation level is used for? The viscosity and dosage of cellulose ether are too high; generally, no coal ash is used in plastering.

 

[Ankur]

Coal ash is not needed; 2.5 kg of methylene chloride is enough. Therefore, wood fiber is unnecessary, and add more PP fiber to 0.5 kg.

 

[Luis]

There is a little more cellulose ether. However, the construction teams in different places have different habits, so it is hard to say, but the sand is too small, and the amount of Redispersible Polymer powder is too high, so it is better to stay within 40%.

 

[Alex]

Cement 350. Heavy Calcium Carbonate 150. calcium hydroxide 50. Quartz sand 350. Redispersible Polymer powder15. methylene chloride 3. moisture-repellent agent 1.5. Wood Fiber 2. starch ether 1.5