A high range water reducer is a type of chemical admixture that improves the strength, durability and flowability of concrete. It is also known as a superplasticizer. The main function of a high range water reducer is to reduce the water-to-cement ratio of the concrete mix. In addition, it can reduce the content of cementitious materials and increase slump.

High range water reducers are usually added at both the batching plant and the construction site. They are used in the production of concrete and masonry for different purposes. Their chemistry differs depending on the purpose. These chemistries include a variety of additives that modify the liquid-vapor interface of concrete.

High range water reducers are often referred to as superplasticizers because they can help lower the water-to-cement ratio of concrete. They are typically polycarboxylate based and can be used to help transform dry concrete to flowable concrete.

High range water reducers can also be used to reduce the cross section of compression members in high rise buildings. In addition, they can be used in the production of high strength concrete. This is important because they can save a substantial amount of money.

Compared to conventional water reducers, a high range water reducer can decrease the amount of water required by more than 12 percent. Therefore, it can improve the durability of concrete in harsh environments.

Compared to conventional water reducers, high range water reducers can also improve workability. This is because they delay the initial setting time of the concrete. However, they can also decrease permeability.