Chemical Action
Daracem 100 neutralises the surface charges on cement particles causing extreme dispersion, resulting in complete, efficient cement hydration which, in turn, greatly increases strength development.
Product Advantages
- Exceptional workability and flowability.
- Improved slump retention in flowable concrete.
- Good placeability into forms and around reinforcing steel.
- Early achievement of form stripping strengths.
- Reduced energy requirement for precast/prestress work.
Applications
Daracem 100 provides improved slump retention in flowable concrete. It is ideal for low water-cement ratio concrete designed for high early compressive and flexural strengths with exceptional workability and flow characteristics. Because of its unique ability to draw maximum effect from the cement content of a mix, it frequently gives performance with a Type I cement comparable to that of a Type III cement.
It can be used in precast/prestress work to reduce the high energy requirement of external heat for accelerated curing. Daracem 100 helps to solve difficult placeability problems such as dense rebar networks or constricted forms and job conditions requiring that the concrete be transported or pumped for long distances. Even at high slump, the concrete consolidates well without segregation. Daracem 100 concrete reaches stripping strengths quickly and finishes easily without the stickiness, tearing and surface drying characteristics sometimes experienced with other high range water reducers.
Compatibility with Other Admixtures
Daracem 100 treated concrete should use a Wood Resin air-entraining agent, (such as DARAVAIR®) or a tall oil derivative air entrainer (such as DAREX® AEA®) for proper air void parameters to provide resistance against freeze-thaw attack.
Pretesting of the concrete should be performed to optimise dosage rates, determine mix design and setting characteristics. Admixtures should not be in contact with each other before entering the concrete. Pretesting to determine optimum addition rates will benefit performance.