DARACEM® 19CF is a high performance liquid concrete superplasticiser that has been developed to allow concrete to attain high performance in both the plastic and hardened states. It is particularly useful for imparting extreme workability to concrete mixes so that large or difficult pours can be made, whilst maintaining excellent slump retention properties especially in climatically hot conditions.
DARACEM 19CF can also be utilized to affect large water reductions, thus achieving high performance in both plastic and hardened states.
DARACEM 19CF is an extremely powerful deflocculating agent and performs by dispersing cement into its primary particles, dramatically increasing flow characteristics of the cement paste. DARACEM 19CF meets the requirements of ASTM C494 Type D and G, BS EN 934-2 and ASTM C1017.
Main applicational areas are:
| Appearance | Dark Brown Liquid |
| Specific Gravity | 1.22 at 20o C |
| Air Entrainment | 0.5% |
| Chloride Content | Nil |
DARACEM 19CF is supplied ready for use and should be added to concrete mixes either during the mixing cycle or at the same time as the water, or alternatively it should be added in its supplied form to a normal concrete mix a few minutes before the pour is made.
In the latter case a mixing cycle of at least 2 minutes should be provided to ensure complete dispersion.
DARACEM 19CF is compatible with all Portland, Pozzolanic and Blast furnace cements. It is also compatible with concrete containing fly ash and/or silica fume.
DARACEM 19CF 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. We recommend that GCP be contacted for advice in all such circumstances.
The optimum dosage is assessed after preliminary trials depending upon the actual mix constituents and specifications required. Addition rates outside of the recommended dosage range may be used for special concrete applications. 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.
Serious overdosing of DARACEM 19CF will generally produce a concrete mix of even greater workability. Set retardation and a slight increase in air entrainment may be noticed. In SRC mixes and cooler weather, set retardation will be further increased. If intentional or accidental increases above the recommended addition rates are encountered, care must be taken to allow for the effect on the stripping time of formwork. In such cases, however, provided the concrete is properly cured, the ultimate strength will generally be higher than for normal concrete.
It is preferable that DARACEM 19CF be introduced into the mixer by means of independent automatic dispensing equipment. Such equipment or advice on dispensing can be obtained from GCP.
For further information see the DARACEM 19CF SDS (Safety Data Sheet) or consult GCP. Packaging DARACEM 19CF is supplied in 210 Litre non-returnable drums. Alternatively, 1,000 Litre IBCs or bulk deliveries can be arranged.
DARACEM 19CF should be stored in original containers or suitable closed tanks, preferably out of direct sunlight and protected from extremes of temperature.
DARACEM 19CF should be stored in original containers or suitable closed tanks, preferably out of direct sunlight and protected from extremes of temperature.
12 months from date of manufacture
12 months from date of delivery
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 19CF-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-19cf