ADVA® Cast 640 is a polycarboxylic high range water-reducing admixture that is specially designed for producing superior high early strength concrete in precast applications.
ADVA Cast 640 contains no added chloride. It is formulated to comply with specifications for chemical admixtures for concrete: AS 1478 as a Type HWR. One litre weighs approximately 1.070kg ± 0.02kg.
ADVA Cast 640 is a superior dispersing admixture, having a marked capacity to disperse cement agglomerates normally found in a cement-water suspension. The capability of ADVA Cast 640 exceeds that of a normal High Range Water Reducers (Type HWR), resulting in lower dosages and better control.
ADVA Cast 640 produces concrete with high early strength for precast structural elements, while at the same time achieving high workability for easy and fast placement and consolidation. It also allows concrete to be produced with very low water-cement ratios in low to high slump ranges.
ADVA Cast 640 has been developed to offer enhanced the slump life of concrete. This extended slump life will be very important for concrete placed in large precast units or in high temperature regions.
ADVA Cast 640 accelerates cement hydration at a very early stage. Together with the very efficient dispersion effect, ADVA Cast 640 achieves very high early strength for the production of precast structural elements.
ADVA Cast 640 is ideal for precast applications, where high early strength is desired, and where high workability will aid faster placement and improved mix consolidation. Ideally suited for self- compacting concrete or super workable concrete applications.
ADVA Cast 640 produces concrete with superior surface finish, without stickiness, tearing or spotty set characteristics.
With up to 40% water reduction possible, ADVA Cast 640 is highly effective in low water-cement concrete, producing high early strength concrete.
The accelerated set times of ADVA Cast 640 may eliminate the need for heat curing to achieve high early strength concrete. The earlier removal of forms leads to reduced cycle times, faster mould turnaround, reduced costs and increased productivity.
Addition rates of ADVA Cast 640 can vary with type of applications, but will normally range from 200 to 800mL / 100kg of cementitious material. In most instances, the addition of 300 to 600mL / 100kg of cementitious material will be sufficient. Should conditions require using more than recommended addition rates, please consult your local GCP representative.
ADVA Cast 640 is compatible with most water-reducing admixtures as well as specialty admixtures like accelerators, DCI® Corrosion Inhibitor, Eclipse® Shrinkage-Reducing Admixture and V-MAR® 3 Rheology-Modifying Admixture. However, it cannot be used in conjunction with Darex® Super 20, Daracem®, Daracem 19A or any other NSFC based superplasticiser. All admixtures should be separately added to the concrete. Pre-testing of the concrete should be performed to optimise dosages and addition sequence of these admixtures.
Please contact your local GCP representative for further information regarding the dispensing equipment for this product.
ADVA Cast 640 is available in bulk.
ADVA Cast 640 contains no flammable ingredients. It will begin to freeze at approximately 0ºC, but will return to full strength after thawing and thorough agitation.
In storage, and for proper dispensing, ADVA Cast 640 should be maintained at temperatures above 0ºC.
Please refer to ADVA Cast 640 Safety Data Sheet or consult GCP Applied Technologies.
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GCP Applied Technologies Inc., 2325 Lakeview Parkway, Alpharetta, GA 30009, USA GCP Australia Pty. Ltd., 14 Colebard Street West, Archerfield, Brisbane, Queensland 4108, Australia This document is only current as of the last updated date stated below and is valid only for use in Australia. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on www.gcpat.com.au. Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.
Last Updated: 2023-07-06
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