Hychem Hygrout PF7 — Underwater epoxy grout

• Walsh Bay Wharves – Sydney Harbour, N.S.W.
• Pyrmont Wharf – Sydney Harbour N.S.W.
• Coffs Harbour Jetty – Coffs Harbour, N.S.W
• Tathra Wharf – Tathra
• Patrick Ports – Hastings, Victoria
• Jetty Wharf – Hastings, Victoria
• Esso Wharf – Hastings, Victoria
• Refinery Wharf – Port Of Geelong, Victoria
• Corio Quay – Port Of Geelong, Victoria

• Remove marine growth, deteriorated timber, broken concrete, coating, surface contaminants and protrusion by mechanical means such as scraping, wire brushing and high pressure water blasting. This operation shall be carried out no sooner than 7 days prior to the application of Hychem PF7.
• Repeat cleaning operation to remove any traces of microorganism growths if the cleaned surface has been left more than 48 hours from the initial cleaning process.
• The resulted surface should have a minimum bond strength of 0.7 MPa.
• Where Hychem PF7 is to be used for the full length of the pile, the sea bed should be excavated to provide a minimum of 300mm cover below the sea bed. Back fill the excavation on completion of encapsulation.

• In a clean container, mix Hychem PF7 liquid components (Resin and Hardener @ 4:1 by vol.) using a helical mixer at a speed of 500 rpm until the mix becomes homogeneous (1 to 2 minutes).
• Add quartz sand (cleaned and kiln dried) if necessary to suit application requirement gradually to the mix whilst still mixing.
• Move the mixer around from side to side and top to bottom and scrap the sides of the mixing vessel to ensure thorough mixing.

Injection

Hychem PF7 can be applied through injection ports.

• Injection ports should be properly installed into the encapsulation jacket.
• Jacket assembly should be positioned appropriately to avoid damage to stand-offs and/or set screws and movement of the joints while any joint adhesive if used has not fully cured.
• Jacket assembly should be properly secured by temporary bracing to prevent it from moving and distorting during the injection and curing of Hychem PF7.
• It is important to maintain a minimum annular space of 10mm between pile and jacket through out the entire encapsulation process.

Gravity Pour

Hychem PF7 can be applied by gravity pour.

• Insert a tremie to the bottom of the fully sealed form work or jacket assembly.
• Pour Hychem PF7 through the tremie at a height to provide a suitable pressure head for rapid displacement of water to avoid break up of Hychem PF7 due to wave action.
• Withdraw the tremie at a speed in sync with the rise of Hychem

PF7 maintaining to keep the spout of the tremie below the surface of Hychem PF7 through out the pouring operation.

• For large volume pour (thickness greater than 40mm), pre-fill the void with course, round aggregate of diameter 10mm or greater to avoid excessive exotherm during curing of Hychem PF7 and also for cost effectiveness.

15 Litre kit 12 litre part A resin, 3 litre part B hardener 100 Litre kit 80 litre part A resin, 20 litre part B hardener

12 months from date of manufacture, stored under shelter at 25°C in original un-opened container.

Note: Product may settle and need to be remixed prior to adding hardener.

Field support where provided, does not constitute supervisory responsibility. Suggestions made by HYCHEM either verbally or in writing may be followed, modified or rejected by the owner, engineer or contractor since they and not HYCHEM are responsible for carrying out procedures appropriate to a specific application.

The technical information and application advice given in this publication is based on the best information available at the time of print. As the information herein is of a general nature, no assumption can be made as to the product suitability for a particular use or application and no warranty as to its accuracy, reliability or completeness either expressed or implied is given other than those required by Commonwealth or State Legislation.

The owner, his representative or the contractor is responsible for checking the suitability of products for their intended use.

Epoxy products may cause skin rash and are dangerous when in contact with the eyes. Care needs to be taken to wear appropriate protective clothing.