TB-1100 — Recommendations for Dispensing DARAFILL® Dry Technical Bulletin

DARAFILL® Recommendations

DARAFILL® is encapsulated in high density wax “eggs.” DARAFILL® capsules are available in two sizes, 90 mL (3 oz) and 360 mL (12 oz), which will treat 0.76 m3 (1 yd3) or 3.06 m3 (4 yd3), respectively, of Controlled Low Strength Material (CLSM). 

Throw DARAFILL® eggs directly into the mixer, not on the belts or into the weigh hoppers.

The initial impact should fracture eggs, which will continue to break down during mixing and speed dispersion of DARAFILL®. The shell fragments are inert and are of no consequence in CLSM.


Wash DARAFILL® and shell fragments off the mixer fins and drum to assure that the additive material reaches the CLSM mixture.

DARAFILL® Dry Recommendations

DARAFILL® Dry is packaged in DARAFILL® bags are available in two sizes, 0.17 kg (0.38 lb) and 0.68 kg (1.5 lbs), which will treat 0.76 m3 (1 yd3) or 3.06 m3 (4 yd3), respectively, CLSM.

Break open the bags and add the contents into the mixer after the CLSM load is batched. Wash the contents off the mixer fins and drum to assure that the additive material reaches the CLSM mixture.

General Recommendations

The CLSM mixture should have a 0 to 25 mm (0 to 1 in.) slump prior to the addition of DaraFill®.

If there is difficulty in discharging zero inch slump mixes from central mixers, try a moderate addition of a concrete air-entraining agent, 270 mL/m3 (7 oz/yd3), which may generate a temporary improvement in slump for discharge. Otherwise, add DaraFill® or DaraFill® Dry directly into the central mixer, if possible, to ease the discharge from the central mixer.

After DaraFill®, or DaraFill® Dry has been added, allow 5 minutes for truck mixing or 90 seconds for central mixing.

Production Tip

To increase haul capacity, add DaraFill® or DaraFill® Dry at job sites to prevent spillage of materials during transport.

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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.

DARAFILL 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.


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

GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 400, Alpharetta, GA 30009, USA
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: 2023-06-28