High performance, rheology-modifying admixture for shotcrete

Product Description

TYTRO® RM 471 is a high performance, liquid rheology-modifying admixture based on a highly purified mineral using a patented process that creates pure, uniformly-sized, rod-shape particles, to improve cohesion, adhesion and early strength development to shotcrete. TYTRO® RM 471 does not contain any Triethanolamine and complies to Australia admixture standard AS 1478.1 as a Type SN.

Product Advantages

  • Eliminates silica fume
  • Improves sprayability
  • Reduces rebound losses
  • Allows large layer thickness in a single pass
  • Low dust in spray applications
  • Robust and easy to formulate


TYTRO® RM 471 is suitable for all shotcrete applications where high early and final strength, low rebound, and large layer thickness in a single pass are required, and especially in the following applications:

  • Temporary and permanent rock support in tunnels
  • Rock support in mining
  • Slope stabilisation

Addition Rates

The dosage of TYTRO® RM 471 ranges between 0.5% and 2% by weight of cement It is GCP’s recommendation that trials are conducted beforehand to determine the optimum dose range to suit your application. If further assistance is required please consult your local GCP representative.


TYTRO® RM 471 is compatible with TYTRO® admixtures for shotcrete applications. For use with other shotcrete admixture systems, we recommend you to contact GCP Applied Technolgoies for further advice.

Packaging & Storage

TYTRO® RM 471 is available in 1,000L totes and by bulk delivery. Shelf life is 12 months.

Dispensing Equipment

Please contact your local GCP representative for further information regarding the dispensing equipment for this product.

Health and Safety

Please see TYTRO® RM 471 Material Safety Data Sheet or consult GCP Applied Technologies.

gcpat.uk | 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.

TYTRO 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., 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 www.gcpat.uk. 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: 2022-04-29