Polümeertsemendidispersioonid

Polümeertsemendidispersioonid, often abbreviated as P.C.D., represent a class of composite materials formed by combining cement with polymer dispersions. These materials are engineered to enhance the properties of traditional cementitious systems, offering improved flexibility, adhesion, durability, and water resistance. The polymer acts as a binder within the cement matrix, bridging micro-cracks and forming a more cohesive structure.

The preparation typically involves mixing cementitious components with a liquid polymer dispersion. When water is added for hydration, the polymer particles coalesce to form a continuous film as the water evaporates. This film encapsulates the cement hydration products, leading to a denser and more resilient material. Common polymers used in these dispersions include acrylics, styrene-butadiene rubber (SBR), and vinyl acetate ethylene (VAE) copolymers.

Applications for polümeertsemendidispersioonid are diverse. They are widely employed in the construction industry as tile adhesives, repair mortars, waterproofing membranes, and floor screeds. Their enhanced bond strength makes them ideal for bonding tiles to various substrates, while their flexibility helps to accommodate movement and prevent cracking. In repair applications, they provide a durable and long-lasting solution for damaged concrete structures. The improved water resistance also makes them suitable for use in wet areas or for external applications where protection against moisture is crucial. The precise formulation of the polymer dispersion and cement blend allows for tailoring the final properties to meet specific performance requirements.