HPMC Used in Self-leveling Mortar

HPMC (Hydroxypropyl Methylcellulose) is commonly used as an additive in self-leveling mortar due to its beneficial properties. Self-leveling mortar is a specialized type of mortar that has a flowable consistency and is used to create a smooth, level surface on horizontal substrates. HPMC serves various functions in self-leveling mortar, including:

1. Water Retention: HPMC helps to retain water in the mortar mixture, preventing rapid drying and ensuring proper hydration of cementitious materials. This extended hydration time allows the mortar to flow easily and self-level before setting.

2. Workability: HPMC acts as a rheology modifier, enhancing the workability of the self-leveling mortar. It improves the flow characteristics and helps to maintain a consistent viscosity, allowing the mortar to spread evenly across the surface.

3. Adhesion: HPMC improves the adhesion of self-leveling mortar to the substrate. It forms a thin film on the substrate surface, promoting a strong bond between the mortar and the underlying material.

4. Sag Resistance: Self-leveling mortar is designed to flow and level itself without forming uneven thicknesses or sags. HPMC contributes to the sag resistance of the mortar by providing viscosity control and preventing excessive settling or segregation.

5. Cohesion and Strength: HPMC helps to enhance the cohesive properties of self-leveling mortar. It improves the strength, cohesion, and overall performance of the hardened mortar, ensuring a durable and reliable finished surface.

The specific dosage of HPMC in self-leveling mortar can vary depending on factors such as the desired flow characteristics, ambient conditions, and the specific formulation of the mortar. It is important to follow the manufacturer's guidelines and recommendations for the correct dosage and usage of HPMC in self-leveling mortar.

Several HPMC manufacturers produce suitable products for self-leveling mortar applications. Some of the well-known HPMC manufacturers include DowDuPont, Ashland, Shin-Etsu Chemical, and Ashland. Consulting the technical data sheets and guidelines provided by these manufacturers can provide detailed information on the appropriate HPMC products for self-leveling mortar and their recommended usage levels.