CONCERA® SA8705

Rheology modifying high range water-reducing admixture IS 9103, ASTM C494 Type A, Type F & G admixtures, and EN 934-2.

Product Description

CONCERA® SA8705 is a high efficiency polycarboxylate-based superplasticizer intended for the production of Control Flow Concrete, a highly flowable concrete utilising conventional mix designs. CONCERA® SA8705 is formulated to extend slump-flow life while imparting extreme workability without segregation to concrete.

CONCERA® SA8705 is supplied as a ready-to-use liquid that weighs approximately 1.08 ± 0.02 kg/L.

It does not contain intentionally added chlorides.

Product Advantages

  • Uses conventional mix designs
  • Enables the production of extremely high-flowing, segregation resistant concrete
  • Yields consistent and predictable slump flows
  • Provides extended slump flow retention
  • Reduces/eliminates job-site QC support
  • Provides consistent air management
  • Easier and faster placement and finishing
  • Minimised blocking – high passing ability through congested reinforcement without aggregate “blocking” when produced with maximum size aggregate conforming to ACI 211.1.
  • Fast construction – significantly faster concrete discharges and placement.
  • Reduced equipment wear – pumps at lower pressures.
  • Lower material costs – uses conventional mix designs instead of specialised mix proportions.
  • Superior moisture tolerance – consistent and predictable flow properties through as larger range of manufacturing moisture fluctuations.
  • Reduced jobsite quality control – improved stability and segregation resistance reduces need for jobsite adjustments.

Control Flow Concrete

Control Flow Concrete is a highly flowable concrete utilising conventional mix designs, which requires minimal external energy to properly consolidate.

Control Flow Concrete produced with CONCERA® SA8705 highrange water reducing admixture has unique advantages compared to conventional flowing concrete and/or Self-Consolidating Concrete.

Advantages compared to conventional concrete mixtures:

  • High flowability concrete – enhanced flow properties with no change in stability or segregation resistance.
  • Easy placement and finishing – minimised need for vibration due to high flow and high responsiveness to external energy.
  • Segregation resistant – increased window of mix designs that maintain acceptable cohesiveness.
  • Minimised blocking – high passing ability through congested reinforcement without aggregate “blocking” when produced with maximum size aggregate conforming to ACI 211.1.
  • Fast construction – significantly faster concrete discharges and placement.
  • Reduced equipment wear – pumps at lower pressures.
  • Advantages compared to self-consolidating concrete mixtures:
  • Lower material costs – uses conventional mix designs instead of specialised mix proportions.
  • Superior moisture tolerance – consistent and predictable flow properties through as larger range of manufacturing sture fluctuations.

Uses

CONCERA® SA8705 is recommended for use in the production of Control Flow Concrete, a highly flowable conventionally proportioned concrete category with slump flows that reside between conventional and self-consolidating concrete.

Typical water content of base mixture (without CONCERA® SA8705) should be sufficient to produce an untreated 50-125 mm slump.

Please consult your GCP Applied Technologies representative for information and assistance should concrete performance requirements require lower water contents.

  • Produces concrete with extremely high levels of workability without segregation. Slump flows can vary from 400 to 650 mm with the types of materials used.
  • Provides superior water tolerance to the concrete, making it less susceptible to normal manufacturing moisture fluctuations
  • Extends slump life to enable batch plant adjustments and predictable job site plastic properties. CONCERA® SA8705 can also be used as a conventional highrange water reducer.

Addition Rates

CONCERA® SA8705 is an easy to dispense liquid admixture. Dosage rates can be adjusted to meet a wide spectrum of concrete mix proportions and performance requirements.

Addition rates will normally range from 500 to 1600 mL/100 kg of cementitious material. Should conditions require using more than the recommended addition rate, please consult your GCP Applied Technologies representative.

Compatibility with Other Admixtures and Batch Sequencing

CONCERA® SA8705 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.

For concrete that requires air entrainment, the use of an ASTM C260 air-entraining agent such as DAREX II AEA is recommended to provide suitable air void parameters for freeze-thaw resistance. Please consult your GCP Applied Technologies representative for guidance.

Packaging & Handling

CONCERA® SA8471 is available in bulk, delivered by metered tank trucks, in totes, and drums.

CONCERA® SA8471 will begin to freeze at approximately 0°C but will return to full strength after thawing and thorough agitation. In storage and for proper dispensing, the temperature should be maintained above 0°C.

Specifications

Concrete shall be designed in accordance with Standard Recommended Practice for Selecting Proportions for Concrete, ACI 211.

The high-range water-reducing admixture shall be CONCERA® SA8705 high range water reducer as manufactured by GCP Applied Technologies, or its equivalent. It shall be manufactured to meet all the requirements of Specification for Chemical Admixtures for Concrete, IS 9103, ASTM C494 Type A, and Type F & G admixtures, and EN 934-2.

The admixture shall be delivered as a ready-to-use, liquid product and shall not contain added chlorides. It shall be used in stric  accordance with manufacturer’s recommendations.

 

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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.

CONCERA 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.
GCP Applied Technologies Inc., 62 Whittemore Avenue, Cambridge, MA 02140 USA.
In India, 90/2, Meppur Thangal Road, (Behind motel Highway), Madavillagam Village, Thirumazhisai, Tiruvalluvar Dt, Chennai- 602 103, India.
 

This document is only current as of the last updated date stated below and is valid only for use in India. 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.in. 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: 2018-11-30

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