Next generation, phthalate free, closed cell, 1-component, high performance, low viscosity, hydrophobic, hydro-active, semi-rigid polyurethane injection grout for cutting off gushing water leaks with a high flow rate and/or high hydrostatic pressure in applications where both high strength and flexibility are required

Product Description

In its uncured form, HA CUT™ CFL AF is a dark brown, non-flammable liquid without phthalate plasticisers. HA Cut CFL AF is a next generation 1- component injection resin with improved waterproofing and water cutting performance. When it comes in contact with water, the grout expands and quickly (depending on temperature and the amount of catalyst HA Cut Cat AF used) cures to a tough, semi-rigid, closed-cell polyurethane foam that is generally unaffected by corrosive environments.

Product Advantages

  • ADR free transport.
  • Next generation resin with improved waterproofing performance.
  • Improved cell structure of the cured compound resulting in better mechanical properties and durability.
  • Phthalate free resins, REACH compliant. •Improved performance at temperatures below 5°C, no crystallisation of HA Cut Cat AF.
  • Fast, Extra-Fast and Super Extra-Fast catalysts available for applications where the standard catalyst reaction speed is insufficient due to low temperatures or very high water flow (See respective Technical Data Sheet).
  • HA Cut CFL AF forms a semi-rigid gasket with high strength and a small amount of flexibility in the joint or crack.
  • Non-flammable, solvent free.
  • User friendly: 1-component material.
  • Controllable reaction times: by using catalyst curing times can be reduced.
  • Cured compound is resistant to most organic solvents, mild acids, alkalis and micro-organisms (*).

(*) For chemical resistances please contact your local GCP representative.

Field of Application

  • Designed for cutting off gushing water leaks with a high flow rate and/or high hydrostatic pressure in moving or non-moving joints or cracks.
  • Used to block leaks into diaphragm walls.
  • Filling large voids such as rock fissures, crushed faults, gravel layers, joints, cracks and honeycombs in concrete structures that are subjected to small settlement or movement.
  • For curtain injections behind tunnel segments.
  • For screen injection behind porous structures when high velocity water streams are present.


Before commencing the injection, consult the Technical Data Sheets and Material Safety Data Sheet (MSDS) in order to be familiar with the materials at hand. Always shake the HA Cut Cat AF well before use.

Technical Data / Properties

HA Cut CFL AF    
Solids 100% EN ISO 3251
Viscosity at 25oC (mPas) Approx. 350 EN ISO 3219
Density (kg / dm3) Approx. 1.075 EN ISO 2811
Flash Point (°C) 140 EN ISO 2719
HA Cut Cat AF    
Viscosity at 25oC (mPas) Approx. 15 EN ISO 3219
Density (kg / dm3) Approx. 0.950 EN ISO 2811
Flash Point (oC) 70  
Density (kg / dm3) Approx. 1.000 EN ISO 1183
Compressive Strength (MPa) Approx. 9.5 EN 12190
Flexural Strength (MPa) Approx. 9 EN 12190


Before commencing the injection, consult the Technical Data Sheets and Material Safety Data Sheet (MSDS) in order to be familiar with the materials at hand. Always shake the HA Cut Cat AF well before use.

1. Surface Preparation

  • Remove surface contaminants and debris to establish the pattern of the crack or joint. Active leaking cracks larger than 3 mm need to be sealed with an approved method.
  • Drill holes of the correct diameter for the selected packer. Drill at an angle of 45°. Preferably the holes should be drilled staggered around the crack to insure good coverage of the crack in case it is not perpendicular to the concrete surface.
  • The depth of the bore should be approximately half of the thickness of the concrete. As a rule of thumb the distance of the drill point from the crack is half the wall thickness.
  • Distance between holes can vary by 15 to 90 cm, depending on the actual situation.
  • Insert the correctly sized packer into the hole up to 2/3 of its length. Tighten with a wrench or spanner by turning clockwise until sufficient tension has been reached to keep the packer in place during injection.
  • Flush the crack with water before injecting with resin. This will flush out dust, debris and prime the crack for the injection resin and improve penetration of the product into the crack. Water in the crack will activate the resin.

2. Resin and Equipment Preparation

  • Prepare the resin with the predetermined amount of catalyst. Shake HA Cut Cat AF well before use.
  • No reaction with the resin will occur until the resin comes into contact with water.
  • Protect the resin from water, since this will trigger a reaction in the container used and might cause the resin to harden or foam prematurely within the injection equipment.
  • It is highly recommended to use separate pumps for the water and the resin injection to prevent cross contamination and blockages.
  • The pumps should be thoroughly primed with Washing Agent to lubricate and dry the system before injection. We recommend the use of pneumatic or electric 1-component pumps.

3. Injection

  • Start the injection at the first packer.
  • Start injecting at the lowest pressure setting of the pump. Slowly increase the pressure until the resin begins to flow. Pressures may vary from 14 bars to 200 bars depending on the size of the crack, the thickness of the concrete and the general condition of the concrete.
  • A little leakage of resin through the concrete or crack is useful in showing the extent of resin travel. Large leaks should be plugged with rags, wait for the resin to set, then inject again.
  • During the injection water will first flow from the crack, followed by foaming resin. After this, pure resin will flow from the crack.
  • Stop pumping when the pure resin reaches the next packer.
  • Move to the next packer and repeat the procedure. •After injecting through a few of the packers, go back to the first one and re-inject with resin.
  • After the resin injection, water can be re-injected into the ports to cure resin left behind. •Let the resin cure thoroughly before removing packers. The resulting holes can be filled with hydraulic cement.
  • When the injection is finished, clean all tools and equipment which have been in contact with the resin with Washing Agent. This should be done within 30 minutes. Do not use solvents or other cleaning products since they give less positive results and can create hazardous situations.
  • Products should be disposed off according to local legislation.

4. Reactivity

At 5°C 2
Approx. 3’20”
Approx. 2’00”
Approx. 1’20’’
Approx. 45”
Approx. 18’30”
Approx. 12’30’’
Approx. 8’00”
Approx. 4’20”
Approx. 12V
Approx. 15V
Approx. 17V
Approx. 22V
At 10°C 2
Approx. 2’40”
Approx. 1’35”
Approx. 55”
Approx. 40”
Approx. 16’00”
Approx. 11’30’
Approx. 6’30”
Approx. 3’50”
Approx. 14V
Approx. 18V
Approx. 20V
Approx. 25V
At 15°C 2
Approx. 2’15”
Approx. 1’15”
Approx. 50”
Approx. 40”
Approx. 14’15”
Approx. 9’30’
Approx. 5’45”
Approx. 3’35”
Approx. 16V
Approx. 20V
Approx. 22V
Approx. 25V
At 20°C 2
Approx. 1’40”
Approx. 1’00’
Approx. 45”
Approx. 35”
Approx. 12’30”
Approx. 8’35”
Approx. 5’00”
Approx. 3’10”
Approx. 20V
Approx. 23V
Approx. 26V
At 25°C 2
Approx. 1’10”
Approx. 55”
Approx. 40”
Approx. 30”
Approx. 10’35”
Approx. 7’45’’
Approx. 4’40”
Approx. 2’45”
Approx. 17V
Approx. 21V
Approx. 24V
Approx. 27V
At 30°C 2
Approx. 1’00”
Approx. 50”
Approx. 35”
Approx. 25”
Approx. 8’35”
Approx. 6’45”
Approx. 3’35”
Approx. 2’25”
Approx. 20V
Approx. 22V
Approx. 25V
Approx. 28V
At 35°C 2
Approx. 55”
Approx. 40”
Approx. 30”
Approx. 20”
Approx. 7’25”
Approx. 5’55”
Approx. 3’05”
Approx. 2’00”
Approx. 21V
Approx. 23V
Approx. 25V
Approx. 28V


HA Cut CFL AF: Dark brown liquid.
HA Cut Cat AF: Red liquid.


Has to be estimated by the engineer or operator and depends on the size of the cracks and voids which need injecting, and on the expansion rate of the chosen resin.


HA Cut CFL AF is sensitive to moisture and should be stored in original containers in a dry area. Storage temperature must be between 5°C and 30°C. Once the packaging has been opened, the useful life of the material is greatly reduced and should be used as soon as possible.

Shelf life: 2 years.


HA Cut CFL AF 5kg, 25kg or 200kg metal drums
1 Pallet 180 x 5kg drum
24 x 25kg drum
4 x 200kg drum
HA Cut Cat AF 0.5 or 2.5L plastic bottle or 20kg metal drum
1 box 8 x 0.5L
1 box 5 x 2.5L
1 Pallet 84 boxes with 0.5L bottles
40 boxes with 2.5L bottles
24 x 20kg metal drums


To be ordered separately

  • IP 1C - Manual hand pump.
  • IP 1C - Compact electric airless diaphragm pump.
  • IP 1C - Pro electric airless diaphragm pump.
  • Packers and connectors.

(Please consult the relevant data sheet).

Health and Safety

HA Cut CFL AF is classified as harmful.

HA Cut Cat AF is classified as irritant.

In case of spills and accidents, refer to the Material Safety Data Sheet of the products or when in doubt contact your local GCP representative.

Always wear protective clothing, gloves and protective goggles when handling chemical products.

For full information, consult the relevant MSDS.

th.gcpat.com | Thailand customer service: 66 2 030 9700

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.

Cut and HA are trademarks, 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, Alpharetta, GA 30009, USA
GCP Applied Technologies Holdings (Thailand) Limited., 848 Moo 2, Bangpoo Industrial Estate (North), Phraksa Mai, Muang Samutprakarn, Samutprakarn 10280, Thailand
This document is only current as of the last updated date stated below and is valid only for use in Thailand. 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.th.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: 2024-01-23