Description
ADVA(tm) Flow Superplasticizer is a high range water-reducing admixture. It is a liquid which has been formulated by the manufacturer for use as received. ADVA Flow Superplasticizer contains no added chloride. [Note: this is important to keep the pH of the concrete as low as possible for Reef Ball Specifications] ADVA Flow Superplasticizer is formulated to comply with Standard Specification for Chemical Admixtures for Concrete, ASTM C 494, Type F. One liter weighs approximately 1.08 kg (9 lb/gal). [ADVA is now the ONLY recommended superplastisizer for Reef Ball projects and should replace prior specifications for WRD-19. Note that you will need to reduce the DAREX II air entrainer]
Dispersion
ADVA Flow Superplasticizer is a superior dispersing admixture having a marked capacity to disperse the cement agglomerates normally found in a cement-water suspension. This capability exceeds that of normal water- reducing admixtures, resulting in lower dosages and better control. Uses ADVA Flow Superplasticizer produces concrete with extreme workability characteristics for high slump, flowing concrete. It also allows concrete to be produced with very low water/cement ratios at low or normal slumps. ADVA Flow Superplasticizer is ideal for use in any concrete where it is desired to keep the water/cement ratio to a minimum and still achieve the degree of workability necessary to provide easy placement and consolidation. ADVA Flow Superplasticizer will also fluidize concrete making it ideal for extreme concreting or other applications where high -slumps are desired such as Reef Balls.
Advantages
1. ADVA Flow Superplasticizer is highly efficient, producing high slump concrete at very low dosage with no loss in strength.
2. ADVA Flow Superplasticizer is added to concrete mix water for rapid batching.
3. ADVA Flow Superplasticizer provides a superior combination of long slump life with near neutral set time.
4. ADVA Flow Superplasticizer concrete, even at high slump, exhibits no significant segregation in comparison to concrete without a Superplasticizer at the same slump. [This helps to keep the top of Reef Balls from developing a "cream" with softer concrete and a higher pH]
5. ADVA Flow Superplasticizer finishes easily without stickiness, tearing or spotty set characteristics.
Addition Rates
Addition rates of ADVA Flow Superplasticizer can vary with type of application, but will normally range from 195 to 650 mL/ 100 kg (3 to 10 fl oz/100 lb) of cement. In most instances the addition of 195 to 325 mL/100 kg (3 to 5 fl oz/100 lb) of cement will be sufficient. For best results, ADVA Flow Superplasticizer should be added to the initial mix water. At a given water/cement ratio, the slump required for placement can be controlled by varying the addition rate. Should job site conditions require using more than recommended addition rates, please consult your Grace Representative, Rick Colin.
Compatibility
In concrete containing ADVA Flow Superplasticizer the use of an air-entraining agent [such as Reef Ball specifications] (such as Daravair 1000 or Darem II AEA) is recommended to provide suitable air void parameters for resistance against freeze-thaw attack. Due to synergistic effects between ADVA Flow Superplasticizer and air-entraining agents, the quantity of air-entraining admixture added to concrete containing ADVA Flow Superplasticizer may be reduced. Please consult with your Grace Representative, Rick Conlin , for dosage guidance. Most Type A water reducers or Type D water-reducing retarders are compatible with ADVA Flow Superplasticizer as long as they are separately added to the concrete. Caution should be exercised when using ADVA Flow Superplasticizer together with a retarder, as excessive retardation can occur if the admixture dosages are too high. Pre-testing of the concrete should be performed to optimize dosages and addition times of these admixtures. The admixtures should not contact each other before they enter the concrete.
Packaging ADVA Flow Superplasticizer is available in bulk, delivered by metered tank trucks, in 1250 L (330 gal) disposable totes, and in 210 L (55 gal) drums. ADVA Flow Superplasticizer contains no flammable ingredients. It will begin to freeze at approximately 0°C (32°F), but will return to full strength after thawing and thorough agitation. In storage, and for proper dispensing, ADVA Flow Superplasticizer should be maintained at temperatures above 0°C (32°F).
Daravair and Darex are registered trademarks and ADVA and ADVA logo are trademarks of W.R. Grace & Co.,-Conn. (62 Whittemore Ave, Cambridge, MA 02140) We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate and is offered for the users consideration, investigation and verification, but we do not warrant the results to be obtained. Please read all statements recommendations or suggestions in conjunction with our conditions of sale which apply to all goods supplied by W.R. Grace. No statement, recommendation or suggestion is intended for any use which would infringe any patent or copyright.
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| Reef Ball Foundation Inc. Services Division 890 Hill Street Athens, GA 30606 USA |
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