- Hydroxypropyl methyl cellulose products for construction are widely used to improve the performance of hydrocoagulant building materials, such as cement and gypsum. In cement-based mortars, it improves water retention, prolongates correction time and opening time, and reduces flow hanging.
- 1. Water retention
- Building special hydroxypropyl methyl cellulose to avoid water infiltration into the wall. The appropriate amount of water stays in the mortar, so that the cement has a longer time for hydration. The water retention is proportional to the viscosity of the cellulose ether solution in the mortar. The higher the viscosity, the better the water retention. As the water molecules increase, the water retention decreases. Because for the same amount of building dedicated hydroxypropyl methyl cellulose solution, the increase in water means that the viscosity decreases. The improvement of water retention will lead to the extension of the curing time of mortar under construction.
- 2.improve the construction
- Hydroxypropyl methyl cellulose HPMC application can improve mortar construction.
- 3.lubrication ability
- All air entraining agents act as wetting agents by reducing surface tension and helping the fine powder in the mortar to disperse when mixed with water.
- 4. Anti-flow hanging -
- Good flow resistant mortar means that there is no danger of flow hanging or downward flow when working in thick layers. Flow resistance can be improved by building dedicated hydroxypropyl methyl cellulose. Especially the newly developed building dedicated hydroxypropyl methyl cellulose can provide mortar better flow resistance hanging
- 5. Bubble content
- High bubble content leads to better mortar yield and workability, reducing cracking formation. It also reduces the strength value, “liquefaction” phenomenon. The bubble content usually depends on the stirring time.
Post time: Nov-21-2022