WRDA® 22D is an aqueous solution of highly purified lignosulphonates. WRDA 22D is a dispersing agent which provides uniform, predictable performance and conforms to AS 1478 Type WR. One litre weighs approximately 1.155kg ± 0.02kg.
WRDA 22D provides a workable mix with less water resulting in stronger, less permeable and more durable concrete. It can be used in pre-mix, on-site and pre-cast plants for normal and specialty concretes. WRDA 22D is ideally suited for lean concrete mixes as well as concrete that uses manufactured sand.
As a dispersing agent, WRDA 22D lessens the natural inter-particle attraction between cement grains in water. It does this by absorbing itself onto the cement particle reducing their tendency to clump together, resulting in the mix being more workable with less water. WRDA 22D will also assist in producing concrete that will pump better due to the finishability agents that are used.
WRDA 22D will provide water reduction with near neutral sets at the recommended dose rates. At increased dose rates it can give some retardation, however this will generally depend on environmental conditions at the time of dosing.
The dose rate for WRDA 22D will typically range between 300 and 600mL / 100kg of total cementitious material.
WRDA 22D is compatible with all air-entraining concrete admixtures, however the quantity of air entraining agent when added with WRDA 22D may be altered to achieve required air entrainment. Initial lab and field trials are recommended to establish exact dose rates.
WRDA 22D can be used in conjunction with MIRA® mid-range water reducers and ADVA® range of high range water reducers and both non-chloride and chloride-based accelerators. Each admixture should be added separately to the mix.
Please contact your local GCP representative for further information regarding the dispensing equipment for this product.
WRDA 22D is available in 205L drums, 1000L IBCs or in Bulk.
WRDA 22D is non-flammable, it can freeze at about -2°C but after thawing and agitating will have no adverse effect on the performance of the product.
Read and understand the product label and Safety Data Sheet (SDS). All users should acquaint themselves with this information prior to working with the product and follow the precautionary statements. SDSs can be obtained by contacting your local GCP representative or office.
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 consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all statements, recommendations, and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement, recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third party right.
WRDA, MIRA and ADVA are an trademarks, which may be registered in the United States and/or other countries, of GCP Applied Technologies, Inc. This trademark list has been compiled using available published information as of the publication date and may not accurately reflect current trademark ownership or status.
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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
https://gcpat.com.au/en-gb/solutions/products/wrda-22d