During the construction process, polycarboxylate concrete admixture is used to produce super high strength concrete. It reduces water/cement ratios and improves durability and strength of concrete. It can be added with various other admixtures to produce multifunctional admixtures.
Polycarboxylates are complex co-polymers with negatively charged backbone molecules. The molecular structure of these admixtures can be adjusted to suit different types of cement. This is beneficial for batching flexibility and provides superior performance in finished concrete.
These polycarboxylates are also used in the production of super plasticizers for concrete. They help enhance the pumping capacity and early strength of concrete, and can also delay the release of hydration heat. In addition, they can be used to adjust the gas content of concrete.
PCE-based superplasticisers are formulated with defoamers to control air entrainment. This helps to maintain the balance of air content in the concrete mix. In addition, these products can be more efficient than the old style PNS/lignin based superplasticisers. They are able to provide differing levels of slump retention and are compatible with most admixtures.
In addition to these benefits, polycarboxylate technology has led to the development of high range water reducing admixtures for concrete. These products can help to achieve up to 45 percent water reduction. This is achieved by dispersing the cement. This makes it possible to achieve flowable mixes at low doses.
In addition, the polycarboxylate water reducers can be used to reduce shrinkage of the concrete and increase the durability of the mixture. In addition, the polycarboxylates can be added with other additives to make pumping concrete.
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