Efflorescence Control Admixture

Product Description

OPTEC® EC-140 admixture offers a new level of efflorescence control to the concrete hardscape industry. It is formulated as a ready-to-use admixture to enhance the quality and appearance of concrete pavers and segmental retaining wall units.

Product Advantages

  • Controls primary and secondary efflorescence
  • Improves color consistency
  • Reduces feed and finish times
  • Improves cement utilization

Product Uses

OPTEC® EC-140 admixture has been especially designed for the efficient production of concrete pavers and segmental retaining wall units. However, it can also be used in other manufactured concrete products such as architectural concrete masonry units and concrete brick.

Application Information

OPTEC® EC-140 is compatible with most concrete admixtures, but when multiple admixtures are used they must be added separately to the concrete mixture.

Addition Rates:

OPTEC® EC-140 admixture is typically used at a rate of 4-9 oz/cwt (260-590 mL/100 kg) of cementitious materials, including pozzolans. The addition rate is dependent upon the specific set of materials and the desired end properties.

OPTEC® EC-140 admixture will produce a swipe on the molded surface of the unit.

Mixing Procedure:

For maximum product efficiency add OPTEC® EC-140 admixture to pre-wetted aggregate or after the cement has been wetted. As with all admixtures, do not add OPTEC® EC-140 admixture to dry cement. Allow an additional 60-120 seconds mix time, after all the admixture has been added.

Health & Safety

All precautions defined on the SDS (Safety Data Sheet) for OPTEC® EC-140 admixture must be followed.


OPTEC® EC-140 admixture is available in drums and returnable totes.


OPTEC® EC-140 admixture will begin to freeze at approximately 32 oF (0 oC), but will return to full strength after thawing and thorough agitation.

ca.gcpat.com | North America customer service: 1-877-4AD-MIX (1-877-423-6491)

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.

OPTEC 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.

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GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 475, 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 Canada. 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: 2024-06-21