weber.tecEP pourable grout WG 

weber.tec EP pourable grout WG finds a wide application in the grouting-in of:

• Crane rails
• Machine baseplates
• Setting-in bolts
• Bearings
• Starter bars
• Dowels
• Balustrading
• Manhole frames
• Fixing runway lights
• Situations where tight clearances add to the difficulties of obtaining secure fixings

• Suitable for cold weather grouting
• Capable of withstanding high dynamic loads
• High compressive and tensile strength
• Very good chemical resistance
• Cure within the temperature range 5°C to 15°C
• Faster flow at lower temperatures 
• Negligible shrinkage factor allows use for underplate or rail grouting. Grout remains in contact with the underside
• Can be placed in much thinner sections than cementitious grouts resulting in cost savings

weber.tec  EP pourable grout WG is shown to be unaffected by a wide range of acids, alkalis and industrial chemicals.

The results of immersion at 20°C to a typical range of chemical solutions and solvents are:

• Caustic Soda 20% Unaffected
• Hydrochloric Acid 20% Unaffected
• Sulphuric Acid 20% Unaffected
• Detergent Unaffected
• Petrol and Oil Unaffected

Concrete surface

Concrete must be suitably prepared by scabbling, needle gunning or grit blasting to remove all cement laitance, grease, oil and other contaminants. The surface should be roughened to provide a bond and have a minimum surface texture of ± 1 mm. Wet surfaces should be dried by using a hot, compressed-air lance. The advantages of this are: it dries the surfaces of both the concrete and the steel, it warms up the surfaces of concrete and steel, allowing the grout to flow better in colder conditions. It also ensures better drying under the plate.

Steel plate

 Bearing plates must be degreased with a suitable solvent such as methyl alcohol, acetone etc. The adhesive bond to gritblasted steel is in excess of 10 MPa This bond is reduced by coatings or galvanising on the steel plate; this will depend on the bond of the applied coating to the steel and the bond of the coating to the resin grout. Plug any holes in the steel plate and apply grease or silicone wax to any removable bolts and nuts. Shutter design Place and fix greased shuttering around the plate. There should be no gaps at the sides, just one at each end, one for air release (5 mm to 10 mm) and the other for grout filling (min. 25 mm). The hopper providing the pressure head must be at least 100 mm high. Normal ratio is 1:3 (height of hopper: length of pour).

To reduce wastage, construct a moveable hopper that can be shut off and placed over the next filling gap. This hopper can be made of thin steel sheet or aluminium and should have handles on the side. The bottom should be at least 25 mm wide and the top of the hopper should be about 75 mm wide to aid pouring.

A forced-action mixer such as a Mixal or Creteangle is recommended. Alternatively, use a powerful drill (> 800 W) at a slow rotational speed (< 400 rpm) with a Refina MR4 mixing blade, which improves mixing efficiency of resin mixtures.

Use a mixing bucket of capacity 20 litres with a diameter of about 20 – 25 cm.

Pour the contents of the bottle of hardener into a suitable bucket and add the contents of one can of resin. Mix for at least 30 seconds then add one full bag of powder gradually while continuing to mix for 1 minute. Ensure that the mixing blade is below the grout level at all times and has fully mixed all the contents especially at the bottom of the bucket. The mixed material must be uniform in colour, indicating that the components are fully blended.

It is important to keep the mixing head below the level of the grout during mixing to avoid entrapment of air.

For sections thicker than 50 mm, the addition of up to 12.5 kg of dry, single-sized pea gravel (5mm) per 25 kg mix is permitted.

Pouring

Immediately after mixing, pour the mixed grout into place, using a spatula to aid transfer of contents if necessary.

It is imperative that a hopper is used to help the grout to flow quickly. Removable hoppers with valves are recommended. As soon as the grout has reached and has filled the small air slit at the opposite end of the shutter, close off the valve in the hopper and move the hopper to the next plate. Remove excess grout and any grout that has spilled onto the plate with a pallete knife or scraper.

Pumping

Pumping is best using a peristaltic pump. Weber can recommend suitable machinery. When pumping, place the end of the hose under the centre of the plate so the grout radiates from the centre. When the grout has reached the far side, start to withdraw the hose very slowly with the pump running to avoid forming air pockets.

Protection

The completed grouted plates must be protected from rain, strong sun and frost for a minimum period of 24 hours during cure.

Fresh grout that has not yet set can be removed with weber.tecsolvent 3 using a cloth or brush to clean tools and spillages.

Set grout has to be removed with methylene chloride paint stripper and care must be taken during its use.

Yield approx. 14 litres.

The shelf life of weber.tecEP pourable grout WG is in excess of 12 months if stored in cool, dry, frost-free conditions.

Contains epoxy constituents.

weber's Customer Services Department has a team of experienced advisors available to provide on-site advice both at the specification stage and during application. Detailed specifications can be provided for specific projects or more general works. Site visits and on-site demonstrations can be arranged on request.

Technical helpline
Tel: (01525) 722110
Fax: (01525) 718988

weber products are distributed throughout the UK through selected stockists and distributors. For UK sales enquiries and overseas projects, contact weber's Sales office.

Sales office
Tel: (01525) 722100
Fax: (01525) 718988