High Range Water Reducer / Superplasticiser for Self-Compacting Concrete Applications

Product Description

ADVA® FLOW 346 is a high performance high efficiency, new generation admixture designed to impart extremely high consistence and enable the production of self compacting concrete. ADVA® FLOW 346 is based on next generation modified synthetic carboxylated polymers and offers concrete producers the advantages of the latest advances in concrete technology. ADVA® FLOW 346 conforms to EN 934-2 and manufactured under controlled conditions to give a consistent product.

Typical Properties

Appearance Amber / Straw Liquid
Specific Gravity (20°C) 1.08
Alkali Content (eq.Na2O) 0.50%
Chloride Content Nil
Air Entrainment 1.0 %
Freezing Point 0°C


  • ADVA® FLOW 346 is extremely efficient, allowing the production of high Flow / self-compacting concrete without excessive admixture dosage and at ‘normal’ water contents
  • Using suitable mix design, self-compacting concrete produced with ADVA® FLOW 346, efficiently flows then compacts around rebar reinforcement without blocking or segregation
  • ADVA® FLOW 346 will enhance both the concrete pumpability and a combined plasticizing effect allows for high range water reductions, leading to considerable increases in compressive strength, impermeability and durability
  • ADVA® FLOW 346 is especially suitable for Precast Factory applications, as is has neutral setting time and high early age strength

Compatability with Other Admixtures

ADVA® FLOW 346 should not under any circumstances be premixed with other admixtures. The performance of the product will be affected by the presence of other chemical admixtures.

We recommend that all admixtures be added separately into the mix.

Method Of Use

ADVA® FLOW 346 is supplied ready for use.

When producing high consistence concrete or concrete of low w/c ratio it is recommended that ADVA® FLOW 346 be added in its supplied form with part of the batching water, after the addition of the cement. After the addition of the admixture, a further mixing cycle of two minutes is suggested to enable ADVA® FLOW 346 to efficiently disperse the mix components.

Compatability with Cements

ADVA® FLOW 346 can be used with most types of Portland cements. It is also effective in concrete containing fly ash or ground granulated blastfurnace slag.

For use with special cements we recommend contacting GCP.

Addition Rates

Range 300 ml -1000 ml per 100 kg cement
0.30% -1.00% (v/w) by wt. of cement
As a guide to trials an addition rate of 0.60 - 0.80% volume by weight of cement is suggested.
For advice and assistance with trials we recommend that you consult GCP Applied Technologies.

As with most products of this type, the magnitude of the effect obtained with ADVA® FLOW 346 is governed by the quantity of product used, w/c ratio, and specific nature of the concrete and constituent materials. It is necessary therefore to assess performance under site conditions using actual materials to determine optimum dosage and effect on plastic/ hardened concrete properties, such as cohesiveness, consistence retention, set characteristics, early rate of strength gain, ultimate compressive strength and shrinkage when these are of consequence.

Effects of Overdosing

The effect of overdosing ADVA® FLOW 346 is a function of the degree of overdose.

When producing high consistence concrete, overdosing will increase the level of consistence and may induce the onset of segregation.

Depending on the extent of the overdose, an increase in setting time may also occur, especially in low ambient temperatures and/or when employing Sulfate-resisting Portland cements or cement replacement materials.

Any situation where an overdose is suspected, careful inspection of the concrete in its plastic state should be conducted. Particular attention to consistency and cohesiveness prior to a decision on the suitability of the concrete for the particular application in question.


It is preferable that the ADVA® FLOW 346 should be introduced into the mixer by means of automatic dispensing equipment.

Equipment or advice on dispensing can be obtained from GCP Applied Technologies.

Health and Safety

For further information on Health and Safety matters regarding this product we recommend that you consult the relevant Safety Data Sheet from GCP Applied Technologies.

In line with general chemical handling precautions avoid contact with skin or eyes and protective gloves/goggles should be worn.

Packaging and Storage

ADVA® FLOW 346 is supplied in both 15 or 205 non returnable drums and 1,000 litre totes.

Alternatively, bulk deliveries can be arranged.

ADVA® FLOW 346 should when possible be stored away from extremes of temperature and then protected from frost. The product should be kept out of direct sunlight in shaded storage at all times.

Storage Life in Manufacturer ‘s Drums:
12 months from date of manufacture.

Storage Life in Bulk Storage:
12 months from date of delivery.

Technical Service

Our Technical Service department of GCP Applied Technologies is available to assist you in the correct use of our performance chemicals. | 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.

ADVA 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 2020 GCP Applied Technologies Inc. All rights reserved.

GCP Applied Technologies (UK) Ltd, Gate St, Dukinfield SK16 4RU.

GCP Applied Technologies Inc., 2325 Lakeview Parkway, Alpharetta, GA 30009, USA
GCP Applied Technologies (UK) Ltd, 487-488 Ipswich Road, Slough, SL1 4EP
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 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: 2023-06-13