DARACEM® 209 is a high performance liquid superplasticiser that has been developed to enhance and improve the slump retaining properties of concrete, whilst providing improved ultimate compressive strengths. It is an extremely versatile and flexible product and is effective over a wide range of cement contents and cement types.
DARACEM 209 is especially beneficial in high durability concrete mix designs. It can be used effectively in cementitious systems that utilise Ground Granulated Blast Furnace Slag, Pulverised Fuel Ash, Silica Fume or Portland Cements.
DARACEM 209 is particularly useful for imparting extreme workability to concrete mixes so that large or difficult pours can be made, especially under hot climatical conditions
DARACEM 209 is formulated from carefully selected raw materials and is manufactured under controlled conditions to give a consistent product. It is an extremely powerful deflocculating agent and performs by dispersion of the cement into primary particles, dramatically improving flow of the cement paste.
DARACEM 209 meets the requirements of ASTM C-494 Type G and BS 934-2.
DARACEM 209 is especially suitable for producing high workability concrete that has excellent workability retention. In this application, minimum extensions of setting time and little loss in early age compressive strength are observed.
High workability flowing concrete can be obtained by incorporating DARACEM 209 into the mix.
DARACEM 209 can be used to effect high range water reductions, typically up to 30%, leading to considerable increases in compressive strength. Impermeability and durability are correspondingly improved.
| DARACEM 209 | |
| Appearance | dark brown liquid |
| Specific Gravity | 1.26 at 20°C |
| Air Entrainment | 0.5% approx |
| Chloride Content | Nil |
DARACEM 209 is supplied ready for use.
When producing high workability concrete it should be added in its supplied form to the batching water, prior to the addition of the cementitious component. After the addition of cement, a further mixing cycle of at least 2 minutes is recommended to enable DARACEM 209 to efficiently disperse the mix components.
DARACEM 209 can be used with all types of cements, including Limestone Cements. It is also effective in concretes containing pulverised fuel ash or ground granulated blast furnace slag. For use with special cements we recommend that you consult GCP Applied Technologies.
DARACEM 209 should not be premixed under any circumstances with other admixtures. While some admixtures can be usefully combined within the same mix the performance of this product may well be affected by the presence of other chemicals and we recommend that GCP be contacted for advice in all such circumstance
As with most products of this type, the magnitude of the effect obtained with DARACEM® 209 is governed by the quantity of product used and the specific nature of the concrete and its constituent materials.
It is therefore necessary to assess performance under site conditions using site materials to determine optimum dosage and effect on both plastic and hardened concrete properties, such as cohesiveness, workability retention, set characteristics, early rate of strength gain, ultimate compressive strength and shrinkage when these are of consequence. As a guide to these trials, and addition level of 1.2%–1.4% DARACEM 209 volume/weight of cement is recommended.
Addition rates outside the recommended dosage range may be used for special concrete applications. This may be the situation when Silica Fume or Blast Furnace Slag Cement is used. In such circumstances it is important to conduct preliminary trials on the actual mix constituents to assess the effect on the properties of the concrete, at the dosage level specified.
For advice and assistance with your trials we would recommend that you consult Grace.
When producing high workability concrete, overdosing will increase the level of workability and may induce the onset of segregation.
Depending on the extent of the overdose, an increase in the setting time may also occur, especially in low temperatures and/or when employing sulphate resisting cement or cement replacement materials.
In any situation where overdosing is suspected, a careful inspection of the concrete in its plastic state should be conducted. Particular attention should be paid to consistency and cohesiveness, prior to a decision on the suitability of the concrete for the particular application in question.
It is preferable that liquid admixtures for concrete should be introduced into the mixer by means of automatic dispensing equipment. Such equipment is available from GCP and details will be supplied on request.
DARACEM 209 is formulated from chemicals which present no fire or health hazards. If however it is split, the floor will be made slippery and should be washed down immediately with cold water.
For further information see DARACEM 209 SDS (Safety Data Sheet) or consult GCP.
DARACEM 209 is supplied in 210 litre, non-returnable containers.
Alternatively, 1000 litre IBCs or bulk deliveries can be arranged.
DARACEM 209 should be stored in original containers or suitable closed tanks, preferably out of direct sunlight and protected from extremes of temperature.
12 months from the date of manufacture.
12 months from the date of manufacture
The Technical Service Department of GCP is available to assist you in the correct and best use of our products. These resources and advice are at your disposal entirely without obligation. Please contact:
GCP
Emirates Chemicals LLC
Festival Tower, Suite 1701
Dubai Festival City
P.O. Box 5006
Dubai, United Arab Emirates
Tel: +971 4 2329901
Fax: +971 4 2329940
Email: meinfo@grace.com
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.
DARACEM is a trademark, 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.
© Copyright 2016 GCP Applied Technologies Inc. All rights reserved.
GCP0082-1216 DARACEM 209-UAE
This document is only current as of the last updated date stated below and is valid only for use in the United Kingdom. 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.uk. 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: 2022-11-24
https://gcpat.uk/en-gb/solutions/products/daracem-209