Unlike plasticizers that simply make concrete flow, superplasticizers actually improve the workability of concrete by reducing its viscosity. This reduces the friction between cement particles and aggregate, allowing the concrete to’slip’ through the matrix. It also allows concrete to be placed with minimal vibration, which increases efficiency and reduces labor costs. This is especially important for precast producers, where maximizing slump and workability reduces mold times and the need for vibration.

Superplasticizers are chemical additives that allow designers to produce high-strength, self-consolidating concrete at lower water-to-cement ratios (W/C). They work like high range water reducers, transforming low-slump and stiff concrete into flowing and easily placed concrete with 15% less water. They also increase the strength of the concrete and decrease segregation and bleeding.

The cost of superplasticizers depends on the type, formulation and manufacturer. They are available in a variety of forms, including powders, flakes and liquids. The powders are typically soluble in water, while the flakes and liquids need to be mixed with concrete or other material before use.

When used properly, superplasticizers can reduce the amount of water required by up to 30%. They can be added to any concrete mix to increase workability, speed finishing, increase strength, and conserve cement, which is the most expensive component of the concrete mix.