The role of Hydroxypropyl methyl cellulose HPMC in concrete

The role of Hydroxypropyl methyl cellulose HPMC in concrete

The role of Hydroxypropyl methyl cellulose HPMC in building dry-mixed mortar

Hydroxypropyl methyl cellulose HPMC is mainly used as a high-efficiency water-retaining agent in building dry-mixed mortar. It can make the mortar have good plasticity and flexibility and improve the bond strength of the mortar.

At the same time, HPMC can reduce the bleeding rate and stratification degree of mortar, improve the cohesion and flow resistance of mortar, and improve the mortar’s construction performance.

The suitable content of HPMC in building dry-mixed mortar is 0.1%-0.3%.

In addition, HPMC can effectively restrain the formation of mortar plastic cracks and reduce the mortar plastic cracking index.
Hydroxypropyl methylcellulose uses

HPMC is mainly used as high-efficiency water retaining agent, thickener, and adhesive in construction.

Specifically, HPMC can improve the plasticity and flexibility of building dry-mixed mortar, improve the bond strength of mortar, reduce the water secretion rate and stratification degree of mortar, and make the mortar have better construction performance.

HPMC is also widely used in construction products such as putty powder, ceramic tile glue, plaster, gypsum, paint, paint remover, etc.
Hydroxypropyl methylcellulose price

The price of HPMC will be affected by different brands, specifications, uses, and other factors, and its unit price is generally about 200 to 3000 yuan.

The price of pharmaceutical-grade HPMC is generally about 800 to 1500 yuan.

The specific price also needs to be evaluated in combination with specific materials.
The viscosity of Hydroxypropyl methyl cellulose HPMC

The viscosity of HPMC refers to the viscosity of hydroxypropyl methylcellulose under specific conditions, which is usually used to describe the consistency of HPMC in a liquid state.

The high viscosity of HPMC indicates that it has strong viscosity in liquid. Otherwise, it is thinner.

Different HPMC viscosity corresponds to different application scenarios and specific requirements, which need to be selected according to the specific use.
Important parameters of Hydroxypropyl methyl cellulose HPMC

The important parameters of HPMC include gel temperature, solubility, particle size, apparent density, bulk density, surface tension, and thermal properties.

These parameters can help us understand HPMC’s performance characteristics and evaluate its applicability in practical applications.

For example, the gel temperature and solubility of HPMC are closely related to its scope of application in different products; parameters such as particle size, apparent density, and bulk density can reflect its physical state and uniformity; and thermal properties such as discoloration temperature and carbonization temperature affect its stability and safety in a high-temperature environment.

Understanding these parameters is of great significance for properly selecting HPMC materials.
The role of Hydroxypropyl methyl cellulose HPMC in foam concrete is mainly in two aspects: 

Improve the compressive strength of foam concrete and the pore structure of foam concrete.

Through its foam stabilization effect, HPMC can significantly improve the paste’s fluidity and the formed paste’s properties.

This makes HPMC play a key role in foam concrete because it can improve the compressive strength of foam concrete and the pore structure of foam concrete.

Restrain the seepage of the foam liquid and the gas overflow in the bubble to improve the stability of the foam.

HPMC can increase the viscosity of foaming agents to restrain the seepage of foam liquid and gas overflow in the bubble and improve the stability of the foam.

However, the amount of HPMC may affect the foaming ratio of the foaming agent, so it needs to be used appropriately.