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Concrete strength and shrinkage reducer

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Description of Concrete strength and shrinkage reducer

1. After adding concrete strength shrinkage enhancer to carbonate cement, it can effectively improve the early and late strength (strength is increased by 5-30%), improve the mold turnover rate, and can also reduce the steam curing temperature or shorten the steam curing time.

2. The coagulant strength-promoting and shrinkage-reducing agent gives the micro-expansion performance to compensate for dry shrinkage, reduce the mixing shrinkage, and improve the crack resistance.

3. Adding a strength-promoting shrink-reducing agent can greatly reduce the amount of Portland cement and reduce the cost of concrete when the early strong friction is not pursued.

4. The dosage of Portland cement can be appropriately reduced after adding concrete strength-enhancing and shrinkage-reducing agent, and low cement and low glue material can still be prepared to reduce the hydration heat release of high-grade and large-volume concrete, and reduce the temperature difference between the center temperature and the surface temperature of the concrete. Reduce the risk of cracking in mass concrete.

5. The strength, impermeability, freeze-thaw resistance, carbonization resistance, and volumetric properties of concrete mixed with strength-promoting shrinkage-reducing agent have been significantly improved.

 Indicators of Concrete strength and shrinkage reducer


Required indicators

Test results

specific surface area




Setting time

Initial setting




Final setting



Free expansion rate in water




Flexural strength










Compressive strength











According to the ingredients of different manufacturers, it needs to be adjusted


The mechanism of Concrete strength and shrinkage reducer

1. With the addition of strength-promoting and shrinkage-reducing agent, calcium sulfoaluminate minerals, calcium sulfate calcined at a higher temperature, high-activity calcium oxide, and Portland cement are compounded and reacted with water to make the calcium aluminate in Portland cement. The aluminum oxide and calcium oxide in the mixed materials such as minerals and slag react to form ettringite hydrated minerals with fast hardness, high strength and slight swelling, so that the potential activity of the mixed materials such as slag can be fully developed. , thereby improving the early and late strength of concrete.

2. The expansive hydration products such as mayvandite and calcium sulfate in the composite system and the organic and inorganic strength-shrinking-promoting components in the strength-promoting and shrinking-reducing agent have the expansion function to compensate for dry shrinkage and improve the crack resistance of concrete. Densification performance and frost resistance, etc.

3. In the composite system concrete, the cohesion is increased due to physical and chemical effects, and segregation and bleeding are avoided.

4. The alkali-free chemical activator accelerates and improves the degree of hydration of cement minerals, thereby improving the early and early strength of concrete.

5. Expansive hydrates such as ettringite and calcium sulfate in the composite system and the shrinkage-reducing components in the strength-promoting shrinkage-reducing agent improve the crack resistance, compactness, frost resistance and impermeability of the mixed soil.

Suggested addition amount of Concrete strength and shrinkage reducer

5-20% of cement material.

Packaging and storage of Concrete strength and shrinkage reducer

25kg/bag or ton bag

If you want to know more about concrete strength and shrinkage reducer,please feel free and contact us

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Product name are used in various high-tech fields, so the market demand for Concrete strength and shrinkage reducer will continue to rise. We are a quality supplier of Concrete strength and shrinkage reducer, please feel free to contact us.

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