Description
Estogrout UW Premix is supplied as a ready to use powder. The addition of a controlled amount of clean water produces a free flowing grout. Thegroutexhibits exceptional resistance to ‘washing-out’ of the cement phase when placed in stationary or moving water.
Estogrout UW Premix is a blend of cement, chemical additives which impart controlled expansion, and non ‘wash-out’ characteristic also add coarse aggregate. Additional aggregate added to reduce the exothermic heat. Estogrout UW premix can be applied up 400 mm
(under water)
• ASTM C109
• ASTM C191
• ASTM C78
25 Kg/Bag
Approx. 11-13 litres depending on water addition
Application Instructions
Ensure the substrate surface is clean and free from oil, grease, or loose material. Defective or laitance-affected concrete should be cut back to a sound base. Substrates permanently immersed require sand-blasting or high-pressure water jet cleaning, while non-immersed or intermittently immersed substrates can be scabbled or bush hammered as alternatives.
Formwork
The formwork should be constructed to be leakproof, as Estogrout UW Premix is free flowing grout, using foam rubber strip or mastic sealant beneath the formwork and between joints. Coat all formwork with Estoform to enable easy formwork release.
Mixing
Use a mechanically powered grout mixer for best results. Ensure sufficient machine mixing capacity and labor to enable continuous grouting. Use 3.4 to 3.5 liters of water per 30 kg bag of Estogrout UW Premix. Slowly add and mix continuously until smooth, for 3 minutes.
Placing
Pour or pump the mixed grout within 20 minutes of mixing for optimal expansion. Maintain continuous flow using a flexible tremie tube to fill the formwork's lowest point. Adjust flow to prevent water entrapment, ensuring the tube does not rise above the grout surface.
Curing
Curing will not be required in intermittently or totally submerged situations. However, when cast above water, exposed areas should be thoroughly cured with Estocure curing membrane, continuous application of water
Cleaning
Because of its water resisting properties, equipment used for Estogrout UW Premix will be difficult to clean. The use of hot water for cleaning purposes will assist, Cured material can be removed mechanically.
Technical Support
Estop offers a wide range of high-performance repair products for both new and existing concrete surfaces, with technical support for specifiers, end-users, contractors, and on-site assistance.
Storage
Estogrout UW Premix has a shelf 12 months if kept in a dry slore in sealed bags. If stored in high temperature and high humidity locations, the shelf life may be reduced
Precaution
Estogrout UW Premix contains alkali-releasing cement powders. Avoid contact with skin, eyes, and inhalation. Use protective gear. Rinse skin and eyes with water if exposed. Seek medical help if ingested — do not induce vomiting.
Additional Information
Estop manufactures a wide range of products, including waterstops, waterproofing products, grouts, anchors, specialized flooring products, and formulations for repairing spalled concrete.
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