Magneum Associates

Product Details:
Lokfix is produced in two versions. The two versions of Lokfix are all pre-measured, two part, filled polyester resin grouts. After hardening, the grout produces anchorages of consistent reproducible values. The versions are: Lokfix S - used where hole diameter is less than 25 mm greater than the bar diameter. Lokfix P - used in overhead or horizontal holes where bar/hole relationship conforms to Lokfix S. The thixotropic nature of Lokfix P reduces flow of grout out of the hole.

Uses:
Lokfix mix and place grouts are used for high strength corrosion resistant anchoring of bolts and bars from 12-51 mm diameter into concrete, rock, masonry or brickwork where high speed of installation and early application of load is required. Permanent installation of reinforcement starter bars, foundation bolts, base plates, balustrading, barriers and safety fences, railway tracks, tie-back anchors, reinforcement dowelling abutments, ground anchors for towers, cranes, dock sills etc.

Advantages:

• Rapid strength gain.
• Vibration resistant.
• Corrosion resistant.
• Non-expansive.
• Can be placed underwater

Technical Support:
Fosroc offers a comprehensive range of high performance, high quality, and construction products. Fosroc offers a technical support package to specifiers and contractors as well as technical assistance in locations all over the world.

Design Criteria:

The version of Lokfix grout chosen will depend on anchor conditions (see description). The high strength of the cured resin permits strong anchors to be created. Ultimate strength is varied by: Strength of host material. Length of resin bond to bar. Hole preparation and formation. Type and dimension of bar. The following formula may be used to determine the minimum hole depths.  

Compressive Strength :
After the minimum time before load the grout typically attains a compressive strength in excess of 20 N/mm2 and an ultimate compressive strength of 90 N/mm2 .

Supplier Specification:
Mix and place grout where shown on the drawings shall be Lokfix manufactured by Fosroc. It shall be used in accordance with the manufacturer’s current application instructions

Performance Specification: 
 Mix and place grout where shown on the drawings shall be a two component polyester resin system. When fully cured it shall exhibit a compressive strength in excess of 90 N/mm2 , and shear strength of 30 N/mm2 at 7 days. The storage, handling and placement of the grout must be in strict accordance with the manufacturer’s instructions.

Hole preparation and formation
Optimum performance of Lokfix grouts requires rough sided, dust free holes. Use of rotary percussive drills with air or water flushing is recommended. Diamond drilled holes should be under-reamed. Cast holes should preferably be inverse dovetail configuration. If parallel-sided holes are cast they should be rough to provide adequate keying

 Bar preparation
All bars should preferably be degreased and all flaky rust removed.

Mixing
A complete pack of resin and catalysed filler should be mixed in one operation. Mixing may be carried out manually or mechanically. When a smooth, even consistency is achieved the grout is ready for use and should be placed well within the gel time of the grout (see properties). Packs have been designed to produce practical and economic volumes of grout. Do not attempt to mix partial pack components.

Lokfix S
The mixed grout should be poured steadily into the prepared holes. The anchor bar is then pressed into the hole to the required depth. Slight agitation of the bar will assist in achieving a complete bond.