The Importance of Incorporating HPMC in Cement-Based and Gypsum-Based Products

In the construction industry, cement-based and gypsum-based products are common building materials. Cement and gypsum, as the main components, play crucial roles 

in enhancing product strength, durability, and water resistance. However, with technological advancements and the diversification of user demands, improving the performance 

of these traditional building materials has become a key area of research. In recent years, adding HPMC (Hydroxypropyl Methylcellulose) to cement-based and gypsum-based 

products has gradually become an important means of enhancing product performance.

Advantages of HPMC

HPMC is a synthetic water-soluble polymer compound widely used in industries such as construction, coatings, and pharmaceuticals. When added to cement-based and 

gypsum-based products, HPMC not only improves their workability but also significantly enhances the overall product quality.

1. Improved Workability

The addition of HPMC can improve the flowability and spreadability of the mix, making cement-based and gypsum-based products easier to apply. Especially in large-scale 

construction, using HPMC reduces the tackiness of the product and enhances its operability, thereby improving construction efficiency and reducing labor costs.

2. Extended Open Time and Adjustment of Setting Time

HPMC helps extend the initial setting time of cement-based products, preventing rapid hardening caused by environmental factors or unstable construction conditions. 

Additionally, it effectively adjusts the setting time of gypsum-based products, ensuring there is enough time for adjustments during construction, thereby preventing quality 

issues caused by a too-short setting time.

3. Improved Water Resistance and Strength

Adding HPMC to cement-based and gypsum-based materials enhances their water resistance and strength, reducing the cracking caused by water evaporation and improving 

the durability of the materials. This is especially important in wet or submerged environments, where HPMC plays a critical role in extending the service life of the materials.

4. Enhanced Crack Resistance

HPMC improves the internal structure of cement and gypsum-based materials, effectively preventing cracking due to drying shrinkage. In gypsum-based materials, the addition 

of HPMC significantly reduces the risk of cracking during the drying process, improving both the appearance and structural stability of the products.

In conclusion, adding HPMC to cement-based and gypsum-based products not only optimizes the workability, extends open time, and adjusts the setting time but also improves 

their strength, water resistance, and crack resistance. These advantages make HPMC an indispensable modifying material in the construction industry. As the demand for high-quality, 

environmentally friendly materials continues to rise in the construction sector, the application of HPMC will have a promising future and become an essential factor in enhancing 

the competitiveness of products.

Name: Cecilia.Wang

E-Mail:cecilia.wang@jtdf-rdp.com

Mobile:+86 190 3451 3486（Whatsapp）