DBM® PM1
Plasticiser for Semi-Dry Mixes
Product Description
DBM® PM1 is a liquid air entraining plasticiser designed for use in semi-dry concrete, to improve workability and cohesiveness whilst permitting a reduction in the free water cement content. Addition of the material will subsequently permit improvements in compressive strength and surface finish.
DBM PM1 combines the effect of deflocculating materials which aids cohesion, producing optimum response to the intense vibration/compaction cycles found in block, brick, interlocking paviours and tile manufacture. This ensures the cement is more widely and evenly distributed maximizing hydration and strength potential, producing a more uniform texture and smoother cement rich appearance.
DBM PM1 is formulated from carefully controlled materials and is blend of natural and synthetic raw materials, producing a consistent product.
Typical Properties
| DBM PM1 | |
|---|---|
| Appearance | brown liquid |
| Specific Gravity | 1.14 at 20 °C |
| Chloride Content | Nil |
Advantages
- More uniform texture
- Sharper edge detail
- Effective in both air and steam cure conditions
- More uniform colour for pigmented mixes
- Reduces mould box wear
- Smoother, cement rich, denser surface
Method of Use
DBM PM1 is supplied ready for use. It should be added to concrete mixes during the mixing process at the same time as the water. It should not be added directly to the cement. No extension of normal mixing time is necessary.
Compatibility with Cements
DBM PM1 can be used with all types of Portland cement including cement replacement materials.
Compatibility with other Admixtures
DBM PM1 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.
Addition Rates
Range: 0.2%–0.4% volume by weight of cement
The performance of DBM PM1 is best assessed after preliminary tests to determine the optimum dosage level and effect on the properties of the concrete.
As a guide to these trials an addition rate of 200 ml–400 ml DBM PM1 per 100 kg cement is recommend.
Effects of Overdosing
Serious overdosing of DBM PM1 will generally produce an increase in workability and cohesion of the mix. This may be accompanied by retardation of the setting characteristics of the concrete. However, provided the concrete is properly cured, the ultimate strength will generally be higher than that of normal concrete.
Dispensing
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.
Health and Safety
For further information see DBM PM1 SDS (Safety Data Sheet) or consult GCP.
Packaging
DBM® PM1 is supplied in nominal 210 litre free, non returnable containers.
Alternatively, 1000 litre IBCs or bulk deliveries can be arranged.
Storage
DBM PM1 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 the date of manufacture
Storage Life in Bulk Storage:
12 months from the date of delivery
Technical Service
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
gcpat.uk | United Kingdom customer service: +44 (0) 1480 478421
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 2016 GCP Applied Technologies Inc. All rights reserved.
GCP0082-1216 DBM PM1-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/dbm-pm1