Kimia S.p.A.

Anchors, structural connections, precision groutings and structural tying

Anchors, structural connections, precision groutings and structural tying

Here you are method statements related to anchors and structural tying

Please find below a list of method statements available:

► Anchoring metallic structures and industrial machinery
► Anchoring of steel bars and reinforcements with resins in cartridges
► Repairs of cracked concrete by injection or casting of fluid resins
► Injections and anchoring of steel bars and reinforcements with cement slurries
► Bonding flat steel plates or other material to concrete elements
► Ground anchor

Anchoring metallic structures and industrial machinery

Anchoring metallic structures and industrial machinery

Prepare the substrate by removing all deteriorated concrete to form a sufficiently-rough solid substrate with no detached portions. Cast the mortar Betonfix AL onto clean substrates saturated with water leaving a dry surface (s.s.d.).

Pour the mix in a continuous flow from one side only into the prepared area, making sure that all air is expelled.

Anchoring of steel bars and reinforcements with resins in cartridges

Drilling of the holes and cleaning with compressed air jets. The diameter of the hole must be 2-4 mm greater than the diameter of the iron to be anchored. Fill partially the drilling (1/3 of the length) injecting the two-component thixotropic chemical anchor Kimitech F3 before inserting the bar.

For the use of the cartridge, remove the cap from the cartridge, slide the locking pins to the opening position, screw the mixer nozzle, and then insert the cartridge into the extruder gun. Squeeze the material out of the spout until it gets a uniform dark color (a few inches of extruded product is sufficient), then proceed to the operation.

Repairs of cracked concrete by injection or casting of fluid resins

Preparation of the substrate by removing all crumbling or detached areas and all traces of cement laitance and paint by sandblasting or brushing. Open cracks less than 0.5 mm wide and carefully clean with compressed air to remove all traces of dust.

Repair horizontal cracks by casting Kimitech EP-IN resin directly into the cracks.

For vertical cracks, drill a series of holes along the crack and carefully clean the area with compressed air to remove all traces of dust. Insert injector tubes into the holes and seal the elements to be repaired with thixotropic epoxy adhesive Kimitech EP-TX and, with the same resin, seal the crack and dust its surface with dry sand to improve the adhesion of any products applied later.

Wait until the adhesive hardens and inject compressed air to make sure the circuit is perfectly free. Mix the two-component epoxy resin Kimitech EP-IN, and inject the product into the lowest tube using a suitable low-pressure pump until it seeps out of the next tube. Seal the first tube and then inject the resin into the next one up, until the crack is completely filled. When the resin has hardened, remove the injector tubes.

Repairs of cracked concrete by injection or casting of fluid resins

Injections and anchoring of steel bars and reinforcements with cement slurries

Prepare the substrate by removing all deteriorated materials and seal crack and joints. When anchoring steel bars or other reinforcements, drill holes with a diameter 20 mm bigger than the diameter of the bars. In case of structural consolidation of masonry walls through injections, drill holes of about 20-24 mm, following the pattern defined by the designer of the interventions. Clean the holes, wet them with water leaving a dry surface (s.s.d.).

In case operations are held on the extrados of horizontal surface, cast the cement slurry Betonfix 200 into the holes filling them for 2/3, afterwords proceed with the insertion of the bars (if foreseen) and fill the void.

In case injection of Betonfix 200 are held on a vertical surface or at the intradox of an horizontal surface, seal the holes with a thixotropic mortar after having inserted the reinforcing bar (if needed). In case of intervention on compact substrates, when sealing the external part of the drilling, fix 2 pipes (one will be used for the injection of the slurry, the other one will allow the air inside the drilling to exit).

Bonding flat steel plates or other material to concrete elements

Apply the adhesive after adequate preparation of the concrete substrate by removing all crumbling or detached areas and all traces of cement laitance, stripping oils and paint by sandblasting or brushing. Carefully clean the area with compressed air to remove all traces of dust deposits. Remove all traces of rust, paint and oil from the surface of the steel by sandblasting to leave a bare metal finish (grade SA 2½). After mixing the two pre-dosed components of Kimitech EP-TX, spread the product on both the surfaces to be bonded, making sure it penetrates into particularly uneven areas. Press and hold the elements together until the adhesive has completely hardened (mechanical fastening can be foreseen to fix the plate untill the resin has not completely set).

Ground anchors

Boreholes are to be drilled with wash boring drilling method to the required lengths. Holes are to be flushed with water/air after drilling to a reasonable cleanliness. All strands are to be cut to length and tied together with tie wire. Free tendon length or strand free length shall be sheathed with a suitable plastic hose. A primary grout pipe is to be tied to the cable and should reach within 0.5m to the bottom of the hole. This grout pipe is withdrawn progressively during primary grouting of Betonfix PL. Pumping shall continue until the flushing water is displaced with grout of even consistency flowing out of the drill hole. Anchors shall not be loaded until 7 days after grouting.

Info & Technical Support

Other method statements here. If you want to get further info or technical support please fill in the form to get in touch with our Technical Department.

Ing. Diego Aisa, Chief of Export Department

Hello! I am Diego Aisa, I am a structural engineer. I began working for Kimia in 2007. I manage international key contacts and I am Chief of Export Department. I like travelling and I got a thing for photography! Find here my contacts. My Linkedin profile.

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Kimia S.p.A.

Via del Rame, 73
06134 - P.te Felcino
Perugia (PG) - Italia

Phone:
+39 075 591 80 71
Fax:
+39 075 591 33 78
Email: info@kimia.it