Dry mortar is used in a wide range of construction applications including masonry, insulation and flooring. In recent years, hydroxypropylmethylcellulose (HPMC) has become a commonly used binder in dry mortars. HPMC is a versatile polymer that can be added to dry mortar mixes to improve adhesion, water retention and workability. This article will explore the benefits of using HPMC in dry mortar and why it has become the first choice of builders and contractors.
What are HPMCs?
Hydroxypropyl methylcellulose is a cellulose derivative produced from natural polymer materials. HPMC is very water soluble and forms a clear viscous solution when mixed with cold water. The polymer is non-toxic and safe for use in food and pharmaceuticals. HPMC is odorless, tasteless, and has excellent thermal stability.
One of the main benefits of using HPMC in dry mortar is its ability to improve adhesion. Adhesion refers to the ability of the mortar to adhere to the surface it is being painted on. HPMC alters the surface tension of the mortar, thereby enhancing its adhesion to various substrates such as concrete, masonry, wood and metal. HPMC forms a protective layer around the cement particles in the mortar, reducing the chance of the particles separating from the substrate.
HPMC increases the water retention capacity of the mortar, enhancing workability and allowing builders to use it longer. By stabilizing the water content of dry mortar, HPMC can promote a more efficient hydration process, resulting in a stronger, more durable end product. Improved water retention also provides better consistency and saves time for builders and contractors.
Workability refers to the ease with which a dry mortar mixture can be constructed and shaped to meet specific requirements. HPMC improves the workability of the dry mix and imparts cohesion to the mortar, facilitating better, more consistent construction. HPMC changes the surface tension of the mortar, increasing the contact area between the mortar and its construction surface, thus improving workability. In addition, HPMC forms a thin film around each particle in the mortar, protecting the mixture from weathering, increasing its stability and durability.
The modified surface tension created by HPMC in dry mortar makes it more stable and prevents the mortar from cracking and disintegrating over time. The bonding action of HPMC adds strength to the finished product, making it more durable and resistant to wear and tear in a variety of environmental conditions. The stability imparted by HPMC also reduces water penetration, thereby minimizing the growth of mold and other undesirable substances.
Improve weather resistance
HPMC helps dry mortars to be more durable in extreme weather conditions, impressively withstanding changes in temperature, rain and humidity. It increases the bond strength of the mortar and slows down the penetration of water into the mixture, which can seriously damage the mortar if it is exposed to water for a long time. HPMC also helps reduce the carbonation rate of the coating, protecting the final product from carbon dioxide exposure and resulting degradation.
HPMC has become a common ingredient in the production of dry mortars due to its ability to modify surface tension, improve water retention and improve workability. By improving adhesion, builders and contractors can create stronger, more reliable structures that will not crack and wear. The benefits of adding HPMC to dry mortars have been proven to increase the durability, efficacy, excellent weatherability and stability of dry mixes, making the incorporation of HPMC into mortars the best choice for achieving quality masonry work. By using HPMC modified dry mortar mixes, builders can create a high-quality, water-resistant and quick-drying material that reduces project turnaround time and enables environmentally friendly and safe construction sites.