TYTRO® MF 120 Data Sheet

High-performance plasticizing and water-reducing admixture for mine backfill mixes

Product Description

TYTRO® MF 120 is an aqueous water-reducing admixture specifically formulated to enhance the properties of cementitious mine backfill. Manufactured under closely controlled conditions to provide uniform, predictable higher quality performance, GCP’s TYTRO® MF 120 contains no added chlorides.


TYTRO® MF 120 is used in all mine backfill applications where it is desired to minimize the binder content yet maintaining workability, and especially in the following applications:

  • Paste fill
  • High-density fill
  • Cemented rock fill
  • Hydraulic fill

Addition Rates

The dosage of TYTRO® MF 120 can vary based on the mix design, binder content, and the particle size distribution of the backfill material. The normal dosage range of TYTRO® MF is 300 to 1,300 mL/ton of backfill. Should conditions require using more than the recommended addition rates, please consult your GCP representative.

GCP recommends that trials be performed under local conditions before use to assess and optimize dosage rates and performance.

Product Advantages

  • Improved rheology – Enhanced flow with reduced water
  • Better pumpability – Reduces pumping pressure and decreases shear viscosity
  • Optimized backfill – Greater economy for a certain level of strength, slump and air
  • Higher strength at all ages
  • Reduces segregation while maintaining flowability
  • Increased uniformity
  • Less permeable/more dense

Mixing & Dispensing

TYTRO® MF 120 can be dispensed directly into the water or the entire wetted out mix. TYTRO® MF 120 should not be dispensed directly on to the dry binder or with other admixtures.


TYTRO® MF 120 is available in bulk, delivered by metered tank trucks, 1,040 liter totes, and 210 liter drums.



TYTRO® MF 120 should be stored at a temperature range of 2°C to 35 °C.

If TYTRO® MF 120 freezes, it will return to full effectiveness after thawing and thorough mechanical agitation. It is recommended that your local sales representative be consulted prior to the use of any products that may have been frozen. Performance tests should always be carried out prior to use.


TYTRO® MF 120 must be kept in closed plastic containers or closed tanks.

Shelf Life 

If stored in tightly closed original containers and under the above mentioned conditions, TYTRO® MF 120 has a shelf life of at least 12 months. Please contact your local GCP sales representative regarding the suitability for use if the shelf life of TYTRO® MF 120 has been exceeded.

Health and Safety

Avoid eye and skin contact and wear rubber gloves and safety glasses when handling this product. If contact occurs, rinse with plenty of water and seek medical advice. 

For further information, refer to the SDS (Safety Data Sheet) or contact your local GCP representative.


TYTRO® MF 120 is compatible with all GCP TYTRO® MF mine backfill admixtures. For use with other admixtures systems, we recommend you to contact GCP for further advice.

gcpat.com | North America Customer Service: +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.

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, 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