Mechanically sprayed mortar, also known as jetted mortar, is a method of spraying mortar onto a surface using a machine. This technique is used in the construction of building walls, floors and roofs. The process requires the use of hydroxypropyl methylcellulose ether (HPMC) as the basic component of the spray mortar. HPMC has several advantages that make it an excellent additive to mechanical spray mortars.
Performance of HPMC in Mechanical Spraying Mortar
HPMC is a water-soluble derivative obtained from cellulose. It has several unique properties including thickening, water retention and binding. These properties make HPMC an important additive for mechanically sprayed mortars. Thickening and water retention properties are critical in the application of mechanically sprayed mortars. They ensure that the mortar stays together, adheres to the surface, and does not run off.
HPMC can also be used as a binder for mechanical spraying mortar. It helps to bind the mortar particles together, ensuring strong adhesion to the surface. This feature is crucial as it ensures the spray mortar has a long-lasting effect and prevents it from peeling off the surface.
Advantages of HPMC for mechanical spraying mortar
1. Improve workability
Adding HPMC to mechanical spraying mortar can improve its workability. It enhances the ability of the mortar to adhere to the surface, preventing its loss. This feature is especially important when working on walls or ceilings to ensure the mortar does not come off.
2. Increase water retention
HPMC has excellent water retention capacity, which is an important property of mechanical spray mortar. Even during construction, the mortar remains hydrated, making the final product stronger and more durable.
3. Better adhesion
HPMC acts as a binder, binding the particles of the mechanically sprayed mortar together for better adhesion. This property ensures that the mortar adheres to the surface for a long-lasting effect and prevents it from peeling off the surface.
4. Reduce cracking
When added to mechanical spray mortars, HPMC reduces the risk of cracking. It forms a strong bond within the mortar, allowing it to withstand pressure and unknown loads. This results in a durable end product that won’t crack or peel after application.
Application of HPMC in Mechanical Spraying Mortar
In order to obtain excellent results with mechanical spray mortars, the correct amount and quality of HPMC must be used. HPMC should be thoroughly mixed with dry materials to ensure uniform distribution. The amount of HPMC required depends on factors such as the type of surface and the desired performance characteristics of the mortar.
Mechanically applied mortars have revolutionized the construction industry, and the addition of HPMC brings several benefits including improved workability, increased water retention, better adhesion and reduced cracking. HPMC has become an important component of mechanical spraying mortar, and its positive impact cannot be underestimated. Proper use of HPMC in mechanical spray mortars can ensure a durable, long-lasting end product that meets stringent construction standards.
Post time: Aug-04-2023