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HPMC Advantages in mortar admixture| hydroxypropyl methylcellulose

April 22, 2022by admin

When it comes to mortar admixtures, you should first understand the effect of ordinary mortar on performance. As the basis for the selection of mortar admixtures, HPMC hydroxypropyl methyl cellulose is one of the best.

At present, the main additives for mortar are as follows:

1.Thickening powder, Its performance in all aspects is still good. The transportation cost is relatively large compared to the low-cost thickening powder, making it a nationwide market. Internal promotion encountered a bottleneck. At present, the thickening powders all over the country are not thickening powders in the true sense.

2. Mortar King is actually a kind of air-entraining agent whose main component is sodium dodecyl sulfonate, etc. It only has air-entraining function in mortar. It is far from replacing lime paste in the true sense, and it is not beneficial to the quality of the project. Air entrainment will inevitably lead to a decrease in the strength of the mortar, and the lack of water retention also makes the appearance of valley cracking tend to be common.

3. Bentonite ,No matter what kind of bentonite, its water retention and construction performance are good, but its fatal weakness is that the dry shrinkage is relatively large, which is the same direction deformation for the dry shrinkage of cement, which strengthens each other and is more prone to cracking.

4. HPMC Hydroxypropyl methyl cellulose has absolute advantages in terms of water retention performance and construction improvement, and can effectively reduce the shrinkage and cracking of pulp, and improve the production of mortar. out rate. Hydroxypropyl methylcellulose has an air-entraining function. When adding hydroxypropyl methylcellulose, consider the dosage, viscosity, and air-entraining properties.

Hydroxypropyl methylcellulose has many advantages, and also has a lot of room for development in the building materials market.

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