The advanges of HPMC & MHEC in dry mix mortar products
November 22nd 2024
Neutral Putty:
Depowder: insufficient cementitious material, insufficient cellulose water retention, low calcium content of heavy calcium
Construction performance: improved by bentonite and starch ether
Empty drum; And wall adhesion caused by inadequate
Layering: interface processing
Strength: Can also be adjusted by grading calcium powder
Lime Calcium Putty:
The problems are empty drum, desilting yellowing, construction is not good, desilting, delamination, cracking, thickening
Depowder: insufficient cementitious material, insufficient cellulose water retention or insufficient amount of addition, lime calcium is not pure
Poor construction performance: bentonite and starch ether to improve
Empty drum; And insufficient wall adhesion caused by the appropriate addition of latex powder
Layering: interface processing
Yellowing: Improper cellulose selection
Cracking: base cracking or too hard cracking strength, coating too thick
After thickening: heavy calcium water absorption rate is different, it is recommended to choose zero water absorption or very low heavy calcium powder; Gray calcium contains undigested GaO.
Cement-based Putty:
Problems for empty drum, construction is not good, depowder, delamination, cracking, insufficient water resistance, false coagulation
Depowder: insufficient cementitious material, insufficient cellulose water retention or insufficient amount of addition
Poor construction performance: bentonite and starch ether to improve
Empty drum; And wall adhesion caused by insufficient, reasonable addition of latex powder
Layering: interface processing
Yellowing: Improper cellulose selection
Insufficient water resistance: insufficient latex powder and insufficient cementitious materials
Cracking: base cracking or too high strength cracking, coating is too thick, with putty to fill the hole
False coagulation: sodium gluconate can be added to prolong the operational time
Tags:
