Product Description
WRDA® PA95 is a non-chloride, PC-based water-reducing set-accelerating admixture. WRDA PA95 combines the benefit of water reduction, shorter finishing time and superior strength development.
WRDA PA95 meets and exceeds AS 1478 - 2000 Type WRAc. WRDA PA95 contains no added chlorides and when dosed at 600mL / 100kg of total cementitious material, contains Triethanolamine (TEA) below 0.025%. WRDA PA95 is manufactured under rigid controls to ensure uniform predictable performance. It is supplied as a clear and low viscosity liquid with a specific gravity of approximately 1.39kg ±0.02kg.
Features
- WRDA PA95 will increase stripping strengths for quicker form or mould turn around.
- Improve finishing times during colder months.
- Accelerate initial and final sets through a range of temperatures.
- Increase water reduction to enhance concrete strengths and higher required workability.
- Can increase de-stressing strengths in pre-stressed applications.
- Enhance pumpability and finishability.
Product Advantages
- Water reduction
- Reduces finishing time
- Increases concrete strength
- Improves concrete finishing and pumping
- Provides labour savings and improves productivity
Addition Rates
WRDA PA95 can be dosed at between 400 and 1,500mL / 100kg of total cementitious material. The higher addition rates will increase water reduction and acceleration, however admixture performance can depend on concrete components, job conditions, and desired performance characteristics.
To assist you in obtaining optimum performance from your admixtures from GCP Applied Technologies, we can offer comprehensive advice and site assistance service.
Overdosing of WRDA PA95 will produce and increase concrete workability, air content and decrease setting time. The set acceleration effect will vary dependent on ambient temperatures, cement used, and the amount of overdose. However, provided correct curing procedures are followed, ultimate concrete strengths may be higher than a corresponding mix or standard admixture dosed concrete.
Compatibility with Other Admixtures
WRDA PA95 in combination with an air entrainer can have a synergistic effect, and so increase the air content. It is highly recommended that truck trials be conducted to achieve specified air content. Please consult your local GCP representative for dosage guidelines.
WRDA PA95 can be used in conjunction with ADVA® and MIRA® range of water reducers. Each admixture should be added separately to the mix.
WRDA PA95 cannot be used in conjunction with DAREX® Super 20, DARACEM® or Daracem 19A.