NULAIR® 20

Air-detraining admixture ASTM C494 Type S

Product Description

NULAIR® 20 is a liquid air-detraining admixture that is used to reduce the level of plastic air in non air-entrained concrete. NULAIR® 20 weighs approximately 8.7 lbs/gal (1.0 kg/L). NULAIR® 20 does not contain intentionally added chloride.

Uses

NULAIR® 20 air detraining admixture, may be used wherever it is desired to decrease the plastic air content in non air-entrained concrete. This includes the following:

  • Ready mix concrete
  • Precast concrete
  • Interior flatwork
  • Architectural concrete
  • Heavyweight concrete
  • Polished exposed aggregate concrete

Addition Rates

There is no standard addition rate for NULAIR® 20. Typical NULAIR® 20 addition rates range from 0.25 to 3 fl oz/100 lbs (15 to 200 mL/100 kg) of cementitious material. NULAIR® 20 dosage rates will be dependent on the level of air detrainment required. Pretesting of concrete should be performed to confirm dosage rates required to achieve desired concrete performance. Addition rates may vary depending on materials, job conditions and desired performance characteristics. Please consult your GCP Applied Technologies representative for information and assistance.

Product Advantages

  • Reduces plastic air in concrete
  • Increases the unit weight of concrete
  • Increases in compressive strength of concrete
  • Decreases potential for rejected concrete

Compatibility with Other Admixtures and Batch Sequencing

NULAIR® 20 air detrainer is compatible with most GCP admixtures as long as they are added separately to the concrete mix, usually through the water holding tank discharge line. In general, it is recommended that the product be added to the concrete mix near the end of the batch sequence for optimum performance. Please see GCP Technical Bulletin TB-0110, Admixture Dispenser Discharge Line Location and Sequencing for Concrete Batching Operations for further recommendations.

Pretesting of the concrete mix should be performed before use, and as conditions and materials change in order to assure compatibility, and to optimize dosage rates, addition times in the batch sequencing and concrete performance. Please consult your GCP Applied Technologies representative for guidance.

Packaging & Handling

NULAIR® 20 air detrainer is available in 275 gal (1040 L) totes, 55 gal (208 L) drums, and 3.5 gal (13 L) pails. The product will begin to freeze at approximately 32°F (0°C) and cannot regain full performance after thawed. The product will begin to  eparate at approximately 100°F (40°C).

Dispensing Equipment

A complete line of accurate, automatic dispensing equipment is available. Typically, NULAIR® 20 air detrainer is hand dosed at the job site.

Safety

Review product label and Safety Data Sheet prior to use.

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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.


GCP, GCP APPLIED TECHNOLOGIES and NULAIR are trademarks, 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.


In Canada, GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.

This document is only current as of the last updated date stated below and is valid only for use in the United States. 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.com. 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: 2018-11-29

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