polycarboxylate concrete admixture is one of the most important auxiliary materials used in modern concrete construction. It can improve the rheological properties of concrete, such as reducing water consumption in the mix proportion and improving compressive strength. It is also a key component in achieving high early and late strength development of concrete.

Introduction: PCE superplasticizers are commonly referred to as high range water-reducing admixtures (HRWR). These admixtures reduce the mixing water up to three to four times compared with ordinary water-reducing admixtures.

Various types of PCE products are available to suit different needs. These include general purpose PCE products to provide high early strength and extended slump retention, as well as PCE products designed to manage air contents in concrete mixtures.

Flexibility in dosing: Because PCEs are not dependent on the time of addition, they can be added to a concrete mixture at any stage in the batching process, including after the cement and water have begun to mix. This may save time, money and labor in a variety of concrete applications.

Higher compatibility: Some PCE-based admixtures have been developed that allow for better compatibility with concrete containing kaolin or other clays. These modified polymers are also reported to be more tolerant toward high carbon content in fly ash and other materials.

Low air entrainment: Most PCE-based admixtures are formulated with a defoamer that is effective in controlling unwanted air entrainment from the concrete mixture into the air environment. This ability to control air entrainment allows for more efficient AEA dosing than PNS based superplasticizers.