Batimix VMA 520-S

Viscosity modifier with plasticizing effect for highly flowable concrete

Description

BATIMIX VMA 520-S is a ready-to-use liquid admixture designed to modify the viscosity of fresh concrete. It is blended with polycarboxylate-acid polymers to ensure concrete workability is not significantly reduced.

Main Purpose

BATIMIX VMA 520-S enhances the cohesiveness of highly flowable concrete. It reduces the risk of material separation during casting and until the onset of hardening. Its water-soluble polymers are characterized by their long-chains of complex forms that adhere to the periphery of mixing water molecules in a cement paste. The chains can intertwine and develop attractive forces through hydrogen bonds and polymer entanglements, resulting in increased plastic viscosity and yield stress even in mixtures with high water-cement ratios. Applications include all types of plain and reinforced concrete castings such as highly flowable concrete, self-consolidating concrete, and shotcrete.

Features

Concrete prepared with BATIMIX VMA 520-S is characterized by the following:

In the plastic state:

• Greatly reduced bleeding and segregation
• Increased cohesiveness with fewer risks to of mixture constituents separating
• Enhanced level of slump retention over time
• Improved stability of fresh concrete during casting and thereafter
• Thixotropic action, providing enhanced homogeneity
• Sag-resistance in shotcrete applications
• When used along with a superplasticizer in a highly flowable self-consolidating concrete, vibration may be eliminated

In the hardened state:

• At normal dosages, no detrimental effect on setting time
• Improved durability and better surface quality

Dosage

0.4% to 1.2% of the cementitious materials

Color

Brown liquid

Available Packages

• 1 t IBC
• 200 kg metallic drum
• 20 kg metallic pail
• 4 kg metallic pail

ReferenceMS-PR-5539