Effect of polycarboxylate superplasticizer on self-leveling performance

Due to the low softening point of ordinary polycarboxylate superplasticizers, they cannot be powdered by ordinary spray drying methods. Only by increasing the softening point through molecular design without basically losing water-reducing performance can we obtain powdered polymers with higher effective ingredients. Carboxylic acid water-reducing agent, while ordinary polycarboxylic acid water-reducing agent can only be powdered by adding an appropriate amount of carrier, and the relative active ingredient content is low. Let’s take PC2 (effective ingredient content 90%) and PC1 (active ingredient content 30%) two types of polycarboxylate water-reducing agents as representatives to look at the impact of water-reducing agents on self-leveling mortar.

Effect of the type and dosage of polycarboxylate superplasticizer on the strength of self-leveling mortar

The two Polycarboxylate polymer powder  used in the experiment have their ultimate water-reducing rates above 40%. Therefore, there is a lot of room for formula design, and different strength levels can be easily achieved according to user requirements. .

Polycarboxylate water-reducing agents is an air-entraining water-reducing agent. Appropriate introduction of air bubbles is beneficial to the suspension performance and frost resistance of the mortar. However, for the surface self-leveling mortar used as the final decorative layer, surface air bubbles The resulting defects must not be ignored. Bubbles are usually eliminated by adding powdered defoamer. Effects of the type and dosage of polycarboxylate superplasticizer on bubbles on self-leveling surfaces.

Powdered polycarboxylate superplasticizer is suitable for self-leveling mortars and has a high cost performance. Powdered polycarboxylate superplasticizer can achieve the combination of high fluidity and high settling resistance. Powdered polycarboxylate superplasticizer allows engineers to more easily design self-leveling formulas.