DBM® W is a liquid permeability reducing admixture for use in all types of mortar and concrete mixes. DBM W has particular applications in the cast stone and block making industries, where high aggregate/ cement ratios are normally used.
| DBM W | |
|---|---|
| Appearance | amber coloured liquid |
| Specific Gravity | 1.04 at 20 °C |
| Sulphate Content | 0.50% as SO3 |
| Chloride Content | Nil |
| Freezing Point | -5 °C |
The reduction in permeability obtained with DBM W is long lasting.
DBM W is supplied ready for use. It should be added to concrete mixes during the mixing process at the same time as the water or the aggregates. It should not be added directly to the cement. No extension of normal mixing time is necessary.
DBM W can be used with all types of Portland cement including sulphate resisting and cement replacement materials.
DBM W 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 Applied Technologies be contacted for advice in all such circumstances.
Range: 1.0%–2.0% volume by weight of cement
The performance of DBM W is best assessed after preliminary tests on site using the actual mix under consideration. It has been found to be effective in a wide range of concretes, e.g. in open textured blocks containing grey or white cement, various mixes into which a synthetic colour is added and in concrete of normal density.
It is difficult to specify a precise level of addition for optimum results to be achieved because of the range of applications. Furthermore, the degree of reduction in surface permeability required can be achieved by varying the dosage level, which typically lies between 1000 ml–2000 ml DBM W per 100 kg cement.
Serious overdosing of DBM W will generally produce an increase in workability and cohesion of the mix. In cold weather this may be accompanied by retardation of setting.
It is preferable that liquid admixtures for concrete should be introduced into the mixer by means of automatic dispensing equipment. Details are available upon request.
For further information see DBM® W SDS (Safety Data Sheet) or consult GCP.
DBM W is supplied in nominal 210 litre free, non-returnable containers.
Alternatively, 1000 litre IBCs or bulk deliveries can be arranged.
DBM W 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 delivery
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.
DBM 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.
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/dbm-w