Superplasticizers, also known as high range water reducers, are chemical admixtures used where well-dispersed particle suspension is required. These polymers are used as dispersants to avoid particle segregation (gravel, coarse and fine sands), and to improve the flow characteristics (theology) of suspensions such as in concrete applications. Their addition to concrete or mortar allows the reduction of the water to cement ratio without negatively affecting the workability of the mixture, and enables the production of self-consolidating concrete and high performance concrete.
Another benefit of superplasticizers is concrete early strength enhancement (50 to 75%). The initial setting time may be accelerated up to an hour earlier or retarded to be an hour later according to its chemical reaction. The use of superplasticizers does not significantly affect surface tension of water and does not entrain a significant amount of air. The main disadvantage of superplasticizer usage is loss of workability as a result of rapid slump loss and incompatibility of cement and superplasticizers.
The global superplasticizer market is expected to register a moderate CAGR during the forecast period (2018-2023). Superplasticizer is a chemical admixture used where well-dispersed particle suspension is required. These polymers are used as a type of dispersants to improve the flow characteristics of suspensions and avoid particle segregation in concrete applications. Asia-Pacific is expected to have the highest CAGR followed by Middle-East & Africa during the forecast period, while North America accounted the largest share of the market in 2017.
Superplasticizer market is the widening application scope of concrete superplasticizers. Furthermore, the ongoing research and development projects to enhance the efficiency of the construction industry is expected to bode well for the growth of the global concrete superplasticizer market. Owing to factors such as mounting population and the need for efficient infrastructure to accommodate the rising population, the construction industry has received a shot in the arm. As a result of this, the demand for concrete superplasticizers is anticipated to intensify over the consecutive years.