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Concrete Admixtures are added to the concrete immediately before or during mixing. These are ingredients besides water, aggregates, fibers and hydraulic cement that are added to the concrete batch. If Concrete Admixtures are used properly, then they offer various beneficial effects to concrete such as acceleration or retardation of setting time, enhanced frost & sulfate resistance, enhanced finishing, control of strength development, improved workability and overall improved quality. Generally provided as water based solutions, they can be added to the concrete at up to 5% on cement weight. There are some types of Admixtures that are added at less than 2%, while some are added at less than 1%. Types Of Concrete Admixtures:
. Normal Water Reducing / Plasticizing Admixtures
Normal Water Reducing / Plasticizing Admixtures are Lignosulphonate based and are used for boosting workability at constant water content. They also reduce water by up to 10%. These Admixtures are used by ready-mix companies for maximizing concrete performance for normal concrete. . High Range Water Reducing / Superplasticising Admixtures
High Range Water Reducing / Superplasticising Admixtures are more effective than normal plasticizers. They are known for giving high workability levels or water reductions from 12% to over 30%. These Admixtures are suitable for huge projects where reinforcing steel is in requirement of high workability. They provide very high early strength and improved strength on site where there is large water reduction. Self Compacting Concrete (SCC) is produced by High Range Water Reducing / Superplasticising Admixtures. . Retarding Admixtures
Retarding Admixtures slow down the rate of hydration of cement. This results in prevention of cement from getting set before it can be placed and compacted. These Admixtures are widely used in very hot conditions and climates. . Accelerating Admixtures
Accelerating Admixtures are used to speed up the rate of cement early hydration. They fasten the setting and early strength development. These Admixtures are suitable to be used in cold conditions or where the concrete pavement is to be used early. If you are looking for fine quality and effective Concrete Admixtures, then look no further and trust the best- Viraj Polyplast Technologies (P) Ltd. Based in Mumbai (Maharashtra), the company is a well-reckoned Manufacturer, Supplier and Exporter of top grade products. Its product catalogue encompasses Paver Moulds, Stone Moulds, Tile Moulds, Bricks Moulds, Cover Block Moulds, Stacking System, Stacking Plastic Plates, Electric Cable Cover and Construction Chemicals. It is an ISO 9001:2008 certified company that has gained huge acceptance and popularity across the globe. To know more about the company and its offered product range, just log onto its website http://www.rubberpvcmould.com.
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