How does water retaining agent for ready-mixed mortar achieve water retention in mortar?
Publish Time: 2025-01-16
Water retaining agent for ready-mixed mortar plays a vital role in construction. The main function of this chemical additive is to effectively control the loss of water in mortar, thereby improving the ductility, plasticity and other key properties of mortar.
The working principle of water retaining agent is mainly based on its regulation of the interaction between water and solid particles of mortar. When water retaining agent is added to mortar, its active substances will adsorb water molecules to form a stable water molecule coating. This coating is like a protective film, which effectively prevents water from evaporating to the external environment. At the same time, water retaining agent can also produce physical adsorption with cement particles in mortar, further enhancing the adhesion and bonding strength of mortar.
Specifically, water retaining agent achieves water retention in mortar in the following ways:
First, by forming a water retaining film, water retaining agent significantly slows down the evaporation rate of water in mortar. This not only prolongs the plasticity of the mortar, but also makes it easier to shape and fill gaps during construction, thereby improving construction efficiency and quality.
Secondly, the use of water retainers helps control the shrinkage of the mortar and reduce cracking caused by drying. As the evaporation rate of water slows down, the shrinkage of the mortar decreases accordingly, thereby improving its crack resistance.
In addition, water retainers can also increase the density and compactness of the mortar, reduce the presence of pores, and thus improve the mortar's impermeability. This is crucial to prevent moisture erosion in walls, floors and other parts.
It is worth mentioning that water retainers can also improve the mortar's anti-freeze and thaw properties. This is particularly important in construction in cold areas. The use of water retainers can significantly reduce problems such as mortar peeling and cracking caused by freeze-thaw cycles, thereby extending the service life of the building.
In addition to the above functions, water retainers also reduce the damage to the mortar by external environmental factors by improving its durability. For example, water retainers can resist erosion by ultraviolet rays, high temperatures, acids and alkalis, and further extend the service life of the mortar.
In summary, water retaining agent for ready-mixed mortar achieves effective water retention in mortar by regulating the interaction between water and solid particles in mortar. This water retention effect not only improves the construction performance and strength of mortar, but also extends the service life of the building. Therefore, the rational use of water retaining agent in construction is of great significance to improving the overall construction quality and extending the life of the building.
