High Range Water-Reducing and Accelerating Admixture – Aqueous Solution
Description
AD-TEK HWR-Ac is a polycarboxylate-based high range water-reducing admixture with accelerating properties to achieve a very high early stripping strength mainly for precast concrete.
AD-TEK HWR-Ac can dramatically reduce mixing water, promoting high early and ultimate strengths of concrete.
AD-TEK HWR-Ac is in accordance with Australian Standard AS 1478.1 – 2000 as a High Range Water Reducing Admixture.
Uses
- High early strength concrete
- Precast/prestressed concrete
- Concrete requiring fast stripping time
- Concrete requiring extremely high water reduction
- Heavily reinforced concrete
- Self compacting concrete (S.C.C.)
Benefits
- Extremely high water reduction: in a range of 20-40%
- Flowing concrete with accelerated stripping strength
- Super workability without segregation
- Low permeability, high durability concrete
- Low shrinkage and creep – reduced risk of cracks
- Suitable for the production of self compacting concrete
Technical Data (typical)
| Property | Value |
|---|---|
| Appearance | Moderate viscose liquid |
| Colour | Light brown |
| Density at 20ºC | Approx 1.1 kg/litre |
| pH value | 3.5-5.0 |
| Chloride content | None added |
| TEA Content | None |
| Air entrainment | May increase |
Dosage
The recommended dose rate is between 300 – 600 ml per 100 kg of cement binder. For self compacting concrete, the typical dosage is 700ml -1000ml per 100 kg of cement binder. Site trials are recommended to determine the actual dosage rate.
Application
The maximum plasticizing effect or water reduction is obtained if AD-TEK HWR-Ac is added into concrete after cement is wetted out. Thorough mixing is required for complete dispersion throughout the mix.
Because of AD-TEK HWR-Ac‘s very high early strength, the slump life is limited and timing during transportation and placement should be taken into account.
Packaging, Storage and Shelf Life
AD-TEK HWR-Ac is available in 20-litre containers, 1000-litre cubes and in bulk.
AD-TEK HWR-Ac should be stored at a temperature between 5ºC and 40ºC. In an unopened original container, it has a shelf life of one year.
Please contact our technical department for further information.
Health and Safety
AD-TEK HWR-Ac contains no hazardous substances requiring labelling. For further information refer to the Material Safety Data Sheet.
Disclaimer: Any advice, recommendation, information, assistance or service provided by application is in good faith and is believed by AD-TEK PTY LTD to be appropriate and reliable. However, any advice, recommendation, information, assistance or service provided by AD-TEK PTY LTD is provided without liability.