Modification Effects of Hydroxypropyl Methylcellulose on Cement-Based Materials

Hydroxypropyl Methylcellulose is a widely used water-soluble cellulose ether that significantly improves 

the workability and durability of cement-based materials. Its primary modification effects in cement applications 

are due to its water retention, thickening, and lubricating properties. The mechanisms and specific benefits of 

HPMC in cement-based materials are as follows:

1. Enhanced Water Retention

HPMC forms hydrogen bonds with water molecules, creating a water-retention film within the material. 

This slows moisture evaporation, extends hydration time, reduces drying shrinkage cracks, and improves early strength.

2. Thickening and Thixotropic Properties

HPMC exhibits high viscosity at rest and becomes more flowable under shear (thixotropy), aiding in levelling and 

preventing slippage. This enhances ease of application and consistency during construction.

3. Bonding and Lubricating Effects

HPMC enhances both cohesion and lubrication in the mixture, preventing bleeding and segregation while improving 

material uniformity and surface smoothness.

Specific Performance Improvements by HPMC

Crack Resistance: HPMC reduces plastic shrinkage cracks, significantly enhancing crack resistance, especially in hot and dry conditions.

Water Resistance: Its dense network structure blocks capillary channels, increasing impermeability and durability.

Bonding Strength: The thickening and thixotropic properties of HPMC notably increase bonding strength, ideal for tile adhesives, plaster mortars, etc.

Workability: Extended open time and improved workability offer flexibility in application, minimizing interlayer voids and cracks.

Major Application Fields

Tile Adhesives: Improves bonding strength and extends open time, suitable for large-area tiling.

Plaster Mortars: Enhances crack resistance and water retention, resulting in a smoother surface.

Self-Leveling Compounds: Improves levelling, reduces sedimentation, and boosts application efficiency.

HPMC has demonstrated broad application potential in the construction industry. With further advancements in 

technology, it will play an even greater role in enhancing the performance of cement-based materials.

Name：Cecilia.Wang

E-mail：cecilia.wang@jtdf-rdp.com

Mobile:+86 190 3451 3486（Whatsapp）