MAK XS GROUT is supplied as a ready to use dry powder. The addition of a controlled amount of clean water produces a free flowing, non-shrink grout for gap thicknesses up to 100mm.
MAK XS GROUT is a blend of Portland cement, graded fillers and chemical additives which impart controlled expansion in the plastic state whilst minimizing water demand. The low water demand ensures high early strength. The graded fillers aredesignedtoassist uniformmixingand produce a consistent grout.
Uses:
MAK XS GROUT is used where precision grouting is required as it is essential to withstand static and dynamic loads. Typical applications would be the grouting of base plates of turbines, compressors, boiler feed pumps etc., It can also be used for anchoring a wide range of fixings. These include masts, anchor bolts and fence posts.
Advantages:
1. Gaseous expansion system compensates for shrinkage and settlement in the plastic state.
2. No metallic iron content to cause staining.
3. Pre-packed material overcomes onsite batching variations
4. Develops high early strength without the use of chlorides.
5. High ultimate strength ensuresthe durability ofthe hardened grout.
6. Free flow ensures high level of contact with load bearing area.
Application Procedure:
Preparation
Foundation surface
The substrate surface must be free from oil, grease or any loosely adherent material. If the concrete surface is defective or has laitance, it must be cut back to a sound base. Bolt holes and fixing pockets must be blown clean of any dirt or debris.
Pre-soaking
Several hours prior to placing, the concrete substrates should be saturated with fresh water.
Immediately before grouting takes place any free watershould be removed with particular care being taken to blow out all bolt holes and pockets.
Base plate
It is essential that this is clean and free from oil, grease or scale. Air pressure relief holes should be provided to allow venting of any isolated high spots.
Levelling shims
If these are to be removed after the grout has hardened, they should be treated with a thin layer of grease.
Formwork
The formwork should be constructed to be leakproof. This can be achieved by using foam rubber strip or mastic sealant beneath the constructed formwork and between joints. In some cases, it is practical to use a sacrificial semi-dry sand and cement formwork. The formwork should include outlets for pre-soaking.
Unrestrained surface area
This must be kept to a minimum. Generally, the gap width between the perimeter formwork and the plate edge should not exceed 150mm on the pouring side and 50mm on the opposite side. It is advisable, where practical, to have no gap at the flank sides.
