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Water reducers are special chemical products added to a concrete mixture before it is poured. They are from the same family of products as retarders . The first class of water reducers was the lignosulfonates which has been used since the 1930s.
It significantly reduces water content while enhancing concrete's workability, strength, and durability. Known for its cutting-edge technology, exceptional application prospects, and superior overall performance, PCE has revolutionized concrete admixtures.
A retarder is a chemical agent that slows down a chemical reaction.For example, retarders are used to slow the chemical reaction hardening of plastic materials such as wallboard, concrete, and adhesives.
The performance of a concrete mix can be altered by use of admixtures. Admixtures can be used to reduce water requirements, entrain air into a mixture, to improve surface durability, or even superplasticise concrete to make it self-levelling, as self-consolidating concrete, [14] the use of admixtures requires precision in dosing and mix design ...
Raising the water content or adding chemical admixtures increases concrete workability. Excessive water leads to increased bleeding or segregation of aggregates (when the cement and aggregates start to separate), with the resulting concrete having reduced quality. Changes in gradation can also affect workability of the concrete, although a wide ...
In order to reduce the energy consumed drying wallboard, less water is added, which makes the gypsum mixture very unworkable and difficult to mix, necessitating the use of plasticizers, water reducers, or dispersants. Some studies also show that too much lignosulfonate dispersant could result in a set-retarding effect.
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