Fosroc Conbextra HF is a high-flow, non-shrink, cementitious grout conforming to the requirements of BS EN 1504-3 Class R4 and BS EN 1504-6 - Anchoring of reinforcing steel bar.
Suitable for use on concrete for grouting gap thicknesses from 10mm to 100mm.
Recommended applications include large stanchion baseplates, joints between pre-cast concrete panels, pumped grouting applications, grouting applications where pouring access is restricted, anchoring of reinforcing steel bars and the installation of tie bars.
For a minimum of 2 hours prior to grouting, the area of cleaned foundation should be flooded with fresh water
Immediately before grouting takes place, any free water should be removed
Particular care should be taken to blow out all bolt holes and pockets
Where water soaking is impossible contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for advice
The formwork should be constructed to be leakproof as Conbextra HF is a free flowing grout
This can be achieved by using foam rubber strip beneath the constructed formwork and between joints
For mixing quantities up to 50 kg a 1150 watt, 280 to 640 rpm, 110 volt drill, fitted with an MR3 Mixing Paddle is suitable.
For best results a mechanically powered grout mixer should be used. Larger quantities will require a high shear vane mixer. Do not use a colloidal impeller mixer.
Place the grout within 20 minutes of mixing to gain the full benefit of the expansion process
Conbextra HF can be placed in thicknesses up to 100 mm in a single pour
When the air or contact surface temperatures are 5°C or below on a falling thermometer, warm water (30°C to 40°C) is recommended to accelerate strength development
Substrates should be free from ice
For ambient temperatures below 10°C the grout consistency should be flowable and the formwork should be maintained in place for at least 36 hours
Normal precautions for winter working with cementitious materials should then be adopted, specifically protecting the grout from freezing in the first 24 hours after placing
High Temperature Working:
At ambient temperatures above 35°C the mixed grout should be stored in the shade
Cool water (below 20°C) should be used for mixing the grout
IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contactedto obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditionsand should be applied only by an individual with the necessary expertise and experience.We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.
Product Details
7470-906075
Data sheet
Manufacturer
Fosroc
For Use By
Professional Use
For Use On
Concrete
Single, Two or Three Pack
Single
Pack Size
25kg
Application
Pour
Pot Life (at 20°C)
30 Minutes
Shelf Life (from date of manufacture)
12 months in sealed bags. If stored in high temperature and high humidity locations the shelf life may be reduced to less than 6 months.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
Fosroc Conbextra HF is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
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