DARACEM® SP4 is a high performance superplasticiser designed specially to impart high workability to concrete containing silica fume, while possessing excellent slump retention properties. It can also be used in normal concrete mix designs where high workability is required for long periods, to aid placement, such as piling concrete, congested areas of reinforcement, etc.
DARACEM SP4 is based on selected raw materials and is manufactured under controlled conditions to give a consistent product. It is formulated from specially designed polymeric sulphonate materials and naturally derived products.
Depending on the addition rate, DARACEM SP4 meets the requirements of Type A, D and G materials of ASTM designation C-494 and complies with BS EN 934-2.
|Appearance||Dark Brown Liquid|
|Specific Gravity||1.16 at 20ºC|
|Air Entrainment||Air content of concrete will normally be increased by 1% - 2%|
- Effective over a wide range of cement contents and w/c ratios.
- Aids concrete cohesion.
- Imparts excellent slump retention over prolonged periods of time.
- Allows greater time for placement and compaction, especially in concrete containing silica fume.
- Can be used to achieve large water reductions in concrete, to obtain high early and ultimate compressive strength gains as required in precast / pre-stressed concretes.
Method Of Use
DARACEM SP4 is supplied ready for use. It should be added to the concrete mixes during the mixing process at the same time as the water. It should not be added directly to the cement.
For mixes containing silica fume, DARACEM SP4 should be incorporated into the mix after the addition of the silica fume, at the same time or just after the mix water. DARACEM SP4 should not be added to slurrified silica fume before addition to the mix.
Compatibility with Cements
DARACEM SP4 can be used with all types of Portland, Pozzolanic and Blast Furnace cements. It can also be used in mix designs containing fly ash, and/or silica fume.
Compatibility with other Admixtures
DARACEM SP4 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.
0.4% - 3.0% volume by weight of cement The performance of DARACEM SP4 is best assessed after preliminary trials in the laboratory or on site, using the actual mix constituents under consideration, to determine the optimum dosage and effect on concrete properties such as compressive strength, setting times, workability retention, etc. when these are of consequence
As a guide to these trials, an addition rate of 400ml – 3000ml DARACEM SP4 per 100kg cement is recommended.
For silica fume concrete mixes, addition rates greater than 1500ml per 100kg cement are recommended, but lower dosage levels may be feasible following trial mixes and depending upon w/c ratios.
Effects of Overdosing
Overdosing of DARACEM SP4 will generally produce an increase in workability and a slight increase in air entrainment, which will be accompanied by a delay in the concrete setting time.
However, provided the overdosed concrete is cured properly, the ultimate strength will generally be higher than normal concrete.
The effects of overdosing with respect to set retardation are increased when sulphate resisting cement (Type V) is used in the mix design.
It is preferable that liquid admixtures for concrete be introduced into a mixer by means of automatic dispensing equipment details, which are available upon request.
Health and Safety
For further information see the DARACEM SP4 SDS (Safety Data Sheet) or consult GCP Applied Technologies.
DARACEM SP4 is supplied in 210 litre, non-returnable containers. Alternatively, 1000 Litre IBCs or bulk deliveries can be arranged.
DARACEM SP4 should be stored in original containers or suitable closed tanks, preferably out of direct sunlight and protected from extremes of temperature.
Storage Life in Manufacturer’s Drums:
12 months from date of manufacture
Storage Life in Bulk Storage:
12 months from date of delivery
The Technical Service Department of GCP Applied Technologies 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.
gcpat.ae | United Arab Emirates customer service: +971 4 5139560
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 2018 GCP Applied Technologies Inc. All rights reserved.
GCP Applied Technologies Inc., 62 Whittemore Avenue, Cambridge, MA 02140 USA.
Emirates Chemicals LLC, Festival Tower, Suite 1701, Dubai Festival City, P.O. Box 5006, Dubai, United Arab Emirates.
GCP0082-1216 DARACEM SP4-UAE
This document is only current as of the last updated date stated below and is valid only for use in the UAE. 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.ae. 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: 2021-02-05