High Flow Rapid Strength Grout

PRODUCT DESCRIPTION Tasir® High Flow is a one part, high flow, rapid strength cementitious grout. USES ▪ For precision, high performance, grouting under- neath machine bases, structural steelwork, etc ▪ For grouting precast concrete units and anchor bars ▪ Repairing concrete structures ▪ Filling......

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Tasir® High Flow is a one part, high flow, rapid strength cementitious grout.



▪ For precision, high performance, grouting under- neath machine bases, structural steelwork, etc

▪ For grouting precast concrete units and anchor bars

▪ Repairing concrete structures

▪ Filling voids

▪ For grouting thicknesses between 10 -100 mm

▪ Steel reinforcement anchoring



▪ High strength

▪ Shrinkage compensated

▪ High flowability retention

▪ Durable

▪ Non metallic

▪ Impressive track record

▪ Quality assured factory blend

▪ Chloride free

▪ >40 N/mm2 in 24 hours


Meets the requirements of BS EN 1504-6



Chemical BaseCement, selected fillers and aggregates, special additives
Packaging25kg bags
Appearance / ColourGrey powder
Shelf Life9 months
Storage ConditionsStore properly in dry conditions in undamaged and unopened original
Density~ 2180 kg/m3 (wet density)
Maximum Grain Size1.0 mm
Compressive StrengthCompressive Strength tested to BS 1881:Part 116:1983 - ambient temper- ature +20°C

1 day3 days7 days28 days
Flowable ~40MPa~54MPa~65MPa~74MPa
Modulus of Elasticity in Compression~29 GPa
Flexural Strength7 days28 days(BS 1881)
Ambient temperature +20°C
Tensile Strength7 days28 days(BS 1881)
Ambient temperature +20°C
Pull-Out ResistancePull out (Dry)

Displacement < 0.6mm at load of 75KN (BS EN 1504-6)

(EN 1881)
Pull out (Wet)Displacement < 0.6mm at load of 75KN (BS EN 1504 -6)

Ultimate Anchorage Bond Strength

6.7 MPa

Electrical Resistivity~4.5 ( Test)


Yield25 kg yields 13.5 litres of fluid grout 1850 kg yields 1m3 of fluid grout
Layer Thickness10 mm min. / 100mm max
FlowabilityFlow cone test
5°C33 seconds(ASTM C939-87)
20°C33 seconds
Efflux times at fluid consistency

Ambient Air Temperature

+5°C min. / +25°C max.
Substrate Temperature+5°C min. / +25°C max.


Concrete, mortar, stone:

Surfaces must be sound, clean, free from ice, oils, grease, standing water and any loose or friable particles and any other surface contaminants. The con- crete "pull off" (tensile) strength should be > 1.0 MPa. Steel, iron: Clean, free from oil or grease, rust and scale etc.


All formwork should be of adequate strength, treated with release agent and sealed to prevent leakage.

Sealing can be achieved by using sealant beneath or around formwork and between joints. Ensure formwork includes outlets for extraction of the pre-soaking water. A header box/hopper should be constructed on one side of the formwork so that a grout head of 150-200 mm can be maintained during the grouting operation.

Substrate Preparation:

The substrate should be prepared by suitable mechan- ical preparation techniques such as high pressure wa- ter jetting, breakers, blastcleaning, scabblers, etc. The concrete substrates should be pre-soaked with clean water continuously for 2 - 6 hours to ensure a satur- ated surface dry condition throughout the operation. Immediately before pouring grout, remove all excess or standing water from within any formwork, cavities or pockets.


Measure the appropriate amount of water to achieve the desired grout consistency given in the table below. Heat water if necessary to achieve a temperature between 15-20℃.

Water addition per 25kg bag

Pourable consistency: 3.75 litres

Flowable consistency: 4.25 litres

Fluid consistency: 4.75 litres

Place the water into a forced action grout mixer or in a clean drum. Slowly add complete bag of Tasir® High Flow into the water and continuously mix for 3 minutes in mixer to achieve a uniform and lump free consistency. Alternatively use a slow speed drill (200-500 rpm) and helical mixer. Dependent on the desired consistency and flow properties, the mix- ing ratio can be adjusted.


Immediately after mixing, pour the mixed grout into the header box/hopper ensuring continuous grout flow during the complete grouting operation to avoid trapping air. Use steel banding or chains to assist flow where necessary. For large volume placement, grout pumps are recommended.


After the grout has initially hardened, remove form- work and trim edges while concrete is ‘green’. Cure all exposed grout surfaces using floor interfere agent. In cold weather apply heat blankets to maintain a con- stant temperature.


Clean all tools and application equipment with water immediately after use. Hardened/cured material can only be mechanically removed.


▪ Do not exceed water addition

▪ Not to be used for patch repair works

▪ Do not use vibrating pokers

▪ Use only on clean, sound substrate

▪ Do not apply when there is a risk of frost

▪ Pour or pump from one side only

▪ Keep exposed surfaces to a minimum


All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.


Please note that as a result of specific local regula- tions the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields.


For information and advice on the safe handling, stor- age and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet contain- ing physical, ecological, toxicological and other safety- related data.



The information, and, in particular, the recommenda- tions relating to the application and end-use of Tasir products, are given in good faith based on Tasir’s cur- rent knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Tasir’s recommenda- tions. In practice, the differences in materials, sub- strates and actual site conditions are such that no war- ranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recom- mendations, or from any other advice offered. The user of the product must test the product’s suitability for the intended application and purpose. Tasir re- serves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request.


Taizheng LIMITED

Tianda block, Jianggan District, Hangzhou city, Zhejiang Province

Tel: +8618503893502


Twitter: @Taizheng Limited

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