Free Flow Non-shrink Cementitious Foundation Grout

Dubond’s Ducon FGP 2 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. Ducon FGP 2 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 are designed to assist uniform mixing and produce a consistent grout
Uses
Ducon FGP 2 is used for precision grouting where it is essential to whilst the 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
Gaseous expansion system compensates for shrinkage and settlement in the plastic state No metallic iron content to cause staining Pre-packed material overcomes onsite batching variations Develops high early strength without the use of chlorides High ultimate strength ensure the durability of the hardened grout.
Preparation
Foundation surface The substrate surface must be free from oil, grease or any loosely adherent material. If the concrete surface is defective or haslaitence, it must be cut back to a sound base.
Bolt Pockets
Depending on the size of the bolt pockets, 50% -100% cleaned 10 mm sound aggregates by weight of grout consumption may be incorporated to economies on grout and also to keep the heat of hydration low. When the thickness exceeds 100 mm -150 mm our technical department may be contacted for advise. There must be at least 12 hours gap between bolt pocket and under base place grouting sequence.
Pre-soaking
Several hours prior to placing, the concrete substrates should be saturated with clean water. Immediately before grouting takes place any free water should 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.