How Polymers Improve Concrete Floors

Polymer has been used as an additive in cement mortar and concrete since the 1920’s when natural rubber latex was added to road paving materials. Since then, there has been considerable progress in polymer modification for cement and concrete. Polymer modification of cement mortar and concrete significantly improves the applicability and performance characteristics. Improvements to these properties include easier handling, better finishing, higher strength and adhesive, and increased durability.


The properties of polymer modified concrete depend largely on the type of polymer used and the ratio of polymer to cement, defined as the ratio of the amount of polymer concrete to the quantity of cement. The ratio of polymer to cement can vary from 0 to 1/3 depending on the type of polymer used in the properties required for application.

There are two theories as to why the addition of polymers improves the properties of concrete. In the first quarter, there is no chemical reaction between the polymer and the cement. During the hydration of cement, the hydrophilic part of the polymer is towards the water part, while the hydrophobic part is towards the air phase (holes and capillaries which are not filled with water). When dry, the water is removed and the hydrophobic particles combine to form a film.

The second theory is that the polymer Portland cement interacts with the components of the hydration product and forms new complexes. It creates a kind of reinforcement in the concrete and creates a semi-permeable membrane. Chemical reactions have been observed between reactive polymers such as polyacrylic esters and particle levels of calcium ions in hydrating cement. Such reactions can improve the bond between cement hydrates and aggregates and improve the final properties of modified cement.

In practice both theories are likely to be applied based on the conditions prevailing during the hydration of polymer components and chemistry and cement. The situation is extremely complicated because some low molecular weight chemicals (for example, amine accelerators) present in commercial polymer compounds can also affect the reaction of Portland cement with water.

It is important that both cement hydration and polymer film formation proceed well to obtain a monolithic matrix in which the cement phase and polymer film formation proceed well to obtain a monolithic matrix which The phase of cement and the phase of polymer are connected to each other. The process of cement hydration is usually faster than the process of making a polymer film. Collections are then bound to this matrix.

The properties of both fresh and hardened cement are affected by parameters such as polymer type, polymer to cement ratio, air content and environmental conditions during hardening of the mixture. Consequences of superior physical properties compared to conventional unmodified cement mixtures. It is possible that polymer films in cement act as crack stoppers for any micro-cracks that may develop under stress. It will also increase the tensile strength and stiffness of the fracture. Impacts such as improved tensile strength, fracture stiffness and waterproofness generally increase the ratio of polymer to cement to some extent.

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