SBTJM-C High-range Water Reducing Admixture

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SBTJM-C High-range Water Reducing Admixture

SBTJM-C high-range water reducing admixture is a powder of beta-sulphonate formaldehyde condensate. The Na2SO4 content is within 7-9%. It has the performances of non-air-entraining, high-range water reducing and strengthening effects. It is in particular suitable to produce concrete with the requirement of high water reduction, high early strength. It can also be used a the water-reducing gradient of composite concrete admixtures. SBTJM-C is formulated to comply with the following specification for concrete admixture: ASTMC494, Type F; GB8076-1997.


High water reduction
Tested according to GB8076-1997, the water reduction is around 18% at the addition  rate of 0.5% by weight of cementitious materials.

The addition of SBTJM-C effectively improves the fluidity of the concrete and  reduces the bleeding and segregation tendency of concrete. Therefore it improves

the workability of the concrete and makes the concrete easy for pumping and compacting.

High strengths
At the addition rate of 0.5%, it can improve the compressive strength of concrete at the ages

of 3d, 7d and 28d by the percentage between that of SBTJM-A and SBTJM-B.

Little change of set time
It has little influence on the initial and final setting time of the concrete. The set time difference

between concrete which SBTJM-C and control concrete is normally within one hour.

Wide range of application temperature
The feasible application temperature ranges from -5℃ to +45℃.

Excellent durability
The addition of SBTJM-C can effectively improve the pore structure of the concrete and increase the durability such as impermeability, carbonation resistance

and frost resistance.

Easy for use
It can be added directly into concrete or dissolved beforehand into liquid state. It matches

the requirement of different application condition or mixer type.

Addition rate
The normal range of SBTJM-C addition rate is 0.4-0.7% by weight of cementitious material.

SBTJM-C should be blended previously with cement. Do not add it directly into wet aggregate. It can be dissolved into water solution before used as liquid admixture.

SBTJM-C is packed in the waterproofing double-layer plastic bag and the net weight is 25 kg per bag. It will not degenerate within its shelf life. Pay attention not to stave the

bag and keep waterproofing during the storage and transportation. If the product is wetted into

agglomeration, it can be crushed into powder before use and has no influence on the


To ensure desired concrete performances, we offer technical consultation service on mix

proportion designed and optimization experiment on mix proportion. Our technical personnel

will provide on-site direction service free of charge.

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