SikaGrout®-4800

SikaGrout®-4800 contains more than 20% by weight of post-consumer material recycled content from the normal recovery of raw materials in manufacturing processes.

12 months after date of production if stored as per stated requirements. 

Store at ambient temperatures, out of direct sunlight, in cool, dry warehouse conditions and clear of the ground on pallets protected from rainfall prior to application. Storage temperatures should not exceed +30 °C.

4.0 mm

Testing Conducted at +20 °C:

Cold Temperature Strength Development (Testing Completed at +2 °C):

Static:

Dynamic:

Testing Conducted at +20 °C:

Cold Temperature Strength Development (Testing Completed at +2 °C):

No scaling

~2.7 kg/l

20 to 150 mm

+2 °C to +35 °C

+2 °C to +35 °C

2.4 to 2.6 litres of water per 25kg bag.

+2 °C to +35 °C

~45 minutes at +21 ± 2°C and 60 ± 10% relative humidity. Higher temperatures will reduce this time and lower temperatures will extend it. 

~2,370 kg powder is needed to prepare 1 m³ of fresh grout.

One 25 kg bag will yield ~10.5 litres of mortar.

For mixing of SikaGrout®-4800 use force-action mixers only!

The concrete should be free of frost, curing membranes, waterproofing treatments, oil stains, laitance, friable material, dust, and anything that may impair adherence and performance.

The concrete surfaces should be (wherever possible) open-textured to provide a mechanical key. If there is a water leakage, it must be drained or properly plugged. Soak the area to be grouted with water for 24 hours prior to grouting to minimise localised absorption and to assist in the free flow of the grout. Surfaces should be matt damp, but free of standing water (i.e. saturated surface dry). Particular attention should be paid to bolt holes to ensure that these are free of water. Use oil free compressed air to blow out bolt holes and pockets as necessary (or use a sponge to remove excess water, if possible). 

Base plates, bolts, etc., must be clean and free of oil, grease and paint, etc. Set and align equipment. If shims are to be removed after the grout has set, then lightly grease them for easy removal. Ensure formwork is of sufficient strength, secure and watertight to prevent movement and leaking during the placing and curing of the grout.

The area should be free of excessive vibration. Shut down adjacent machinery until the grout has hardened. In hot weather, base plates and foundations must be shaded from direct sunlight. Bags of grout should be stored in the shade prior to use (or kept cool by other suitable means). 

In cold weather, the temperature of base plates and foundations should be preferably raised to over +10 °C.

For mixing of SikaGrout®-4800 use force-action mixers only!

Damp down the inside of the grout mixer with clean water prior to mixing the initial batch of SikaGrout®-4800. Ensure the mixer is damp but free of standing water. The product should be mixed with 2.5 litres of water (+/- 0.1 litres) per 25 kg bag. Add the pre-measured quantity of water. Slowly add the powder whilst mixing continuously. Mix for at least seven minutes until a smooth, uniform consistency is achieved without lumps in the mortar.

In hot weather, use cold water to bring the mixed grout temperature to below +30 °C. In cold weather, use warm water to raise the mixed grout temperature to over +10 °C for quicker hardening.

Lengths of metal strapping laid in the formwork prior to placing may be necessary to assist grout flow over large areas and in compacting and eliminating air pockets. Have sufficient manpower, materials and tools to make mixing and placing rapid and continuous. Where grout must flow some distance, make the initial batch slightly more fluid or flowable than required; this lubricates the surfaces and avoids blockage of the grout that follows. The grout shall be poured continuously and from one side only, to avoid entrapment of air while grouting.

Maintain a constant hydrostatic head, preferably of at least 15 cm. On the side where the grout has been poured, allow 10 cm clearance between the side of the form and the base plate of the machine. On the opposite side allow 5 to 10 cm clearance between the formwork and the base plate.

Make sure the grout fills the entire space to be grouted and remains in contact with the plate throughout the entire grouting placement.

Due to differences in temperature between the grout under the base plate, and exposed shoulders that are subject to more rapid temperature changes, debonding and / or cracking can occur. Avoid shoulders wherever possible. If shoulders are required, they should be firmly anchored with reinforcement to the substrate to prevent debonding.

SikaGrout®-4800 is suitable for use with most types of pumping equipment.

NOTE: Do not use vibration on the placed grout!

Immediately after SikaGrout®-4800 is placed, cover all exposed grout with clean, wet hessian and keep moist by covering with polythene. 

Tools and mixer must be cleaned immediately after use with water. Cured material can only be removed mechanically.