Shunan Concrete Expansive Agent

concrete expansive agent is mixed with ordinary cement and hydrated,cement mortar or concrete,to minimize drying shrinkage

High-efficiency Shunan Expansive Agent is being used in all sections of the construction fields.

Expansive agent for concrete.Expancrete is a powder admixture used to manufacture shrinkage-compensated concrete and mortars.Expancrete is suitable for water tight castings and castings that require a contrast to concrete hygrometric shrinkage (water tanks, piping, floors, etc.).Add Expancrete to the mixer at the same time as the other ingredients (cement, aggregates, water).Expancrete is used only for reinforced concrete.Consumptionfrom 5 to 8 kg per 100 kg of cement.Packaging50kg plastic bag.Also available on request in big bags or bulk.

In many mass concrete projects, mix high performance concrete expansive agent to make shrinkage compensating concrete, besides we adopted effective methods of warm-keeping and heat-isolation by temperature test and control, as a result, concrete crack was prevented.

High-efficiency Shunan Expansive Agent is obtained by blending suitable natural anhydrite with a specially manufactured clinker which consists essentially of calcium sulphoaluminate and CaO.It is always mixed with ordinary cement. When mixed in the proper proportions with ordinary cement and hydrated, cement mortar or concrete expands during the early stages of hydration. This expansion, when restrained, makes it possible to minimize drying shrinkage. Moreover, when the ratio of expansive agent to ordinary cement is increased its high expansion qualities make it ideal for use in prestressed concrete.

Expansive Agent is being used in all sections of the construction fields and by a wide variety of concrete products manufacturers.

Shunan Expansive Agent is manufactured under a strict quality assurance systems.which accommodates the technical requirements of building chemistry formulators.

The properties of Expansive Agent conform to the standards of the manufacturer and to the Chinese relevant standards.

Characteristics of Expansive Agent

Low alkalinity. High-efficiency Shunan Expansive Agent has a very low alkali content (R2O<0.3%) which is beneficial to avoid AAR in concrete.

Short stable stage of expansion. The stable stage of expansion is not more than 14 days, thus the ultimate strength of concrete is not affected.

Low dosage and high expansion capacity. The normal dosage of Expansive Agent is 6~8% by the weight of ordinary cement, which is lower compared with other expansive additives such as UEA and CEA (their dosages are about 10~12% by the weight of cement) in the market

Features by Expansive Agent

Prevents cracking due to drying shrinkage and hydration heats;

Increases the water tightness of concrete and thus is useful for waterproofing buildings;

Enables the manufacture of high strength concrete products through chemical prestressing...

Shunan Concrete Expansive Agent