Sika AnchorFix-3001
Pure-epoxy, styrene-free chemical anchoring adhesive for threaded rods and post-installed rebar in cracked, uncracked and damp concrete — ETA and ICC-ES approved for seismic and sustained loads.
What is it?
A two-part, 1:1, thixotropic pure-epoxy anchoring adhesive supplied in side-by-side cartridges. It bonds threaded rods, bolts and reinforcement bars into drilled holes without expansion forces.
Where is it used?
Structural fixings into concrete, solid and hollow masonry, natural stone and solid rock — from machine bases and steel brackets to post-installed rebar starter bars in RC works.
Why use it?
It is one of the few adhesives ETA-approved for cracked concrete and rebar connections, holds in damp holes, and carries seismic (C1) and potable-water approvals, so it suits demanding structural and infrastructure duty.
How is it applied?
Drill and meticulously clean the hole, fit a static mixer, discard the first extrusion, inject from the base upward, then insert the anchor within the open time and leave it undisturbed while it cures.
About Sika AnchorFix-3001
On a live structural job, the anchor is only as good as the resin behind it — and that is exactly where Sika AnchorFix-3001 earns its place. It is a pure epoxy system, mixed one-to-one from two parts through a static nozzle, engineered for the fixings that actually carry load: threaded rod for steel connections, foundation bolts under vibrating plant, and post-installed reinforcement bars tying new concrete into old. Unlike faster hybrid or polyester chemistries, this is a full-epoxy formulation, and that shows up in the numbers — roughly 85 N/mm² compressive and 23 N/mm² tensile strength at seven days, with shrinkage-free, expansion-free hardening that lets you anchor close to a slab edge without splitting the concrete.
What makes it a specifier’s product rather than a general-purpose tube is its approval envelope. It carries European Technical Assessments to ETAG 001 for both cracked-concrete anchoring (ETA 14/0157) and post-installed rebar connections (ETA 14/0368), an ICC-ES report (ESR-3608) covering static, wind and seismic loading, plus NSF/ANSI 61 clearance for contact with drinking water and ISO 834-1 fire testing. For an engineer signing off a fixing schedule in Delhi NCR or on a pan-India infrastructure package, those documents are the difference between an assumption and a design basis. It is also styrene-free and rated for hot and tropical climates, which matters on Indian sites where cartridge and substrate temperatures rarely sit at a comfortable European 20 degrees.
The technical insight
A bonded anchor transfers load through a chain: steel, then the epoxy-to-steel bond, then the epoxy-to-concrete bond, then the concrete cone. AnchorFix-3001 is a pure-epoxy resin, so the adhesive links in that chain are stiff and strong — a compressive modulus near 5,000 N/mm² means the fixing barely creeps under sustained load, which is why the product qualifies for cracked concrete where a crack can open across the bond line and demand the resin keep gripping. Because epoxy cures by chemical reaction rather than drying, it hardens without expansion pressure; the anchor is held by adhesion, not by wedging force, so you can place fixings near free edges and in closely-spaced groups without inducing splitting. The thixotropic, non-sag body is deliberate: it stays put in an overhead or horizontal hole and does not run out before the rod is seated. The trade-off is temperature dependence — cure is a reaction, so it speeds up in heat and slows in cold. At +40 degrees the gel (open) time is only about 3 minutes and full cure around 3 hours; at +20 to +25 degrees you get roughly 11 minutes of open time and a 7-hour cure; down at +5 to +10 degrees cure stretches to about 24 hours and the cartridge itself must be at least +10 degrees. Reading that table before you drill is what separates a sound fixing from one seated after the resin has already gelled.
Where it is used
- Post-installed reinforcement bar (rebar) starter and continuity dowels tying new concrete into existing RC members
- Anchoring threaded rods and studs for steel brackets, cleats and base plates onto concrete columns and slabs
- Holding-down and foundation bolts for vibrating machinery, pumps and structural steel bases
- Handrails, balustrades, safety barriers and railing bases fixed into concrete or masonry
- Facade, cladding and canopy support brackets anchored into concrete and solid masonry
- Window and door frame fixings and carpentry anchors into masonry and stone
- Anchoring into damp drilled holes where fast polyester or hybrid resins are unreliable
- Fixings requiring seismic (C1) or drinking-water-contact certification
Key advantages
- ETA-approved to ETAG 001 for both cracked-concrete anchoring and post-installed rebar connections
- High mechanical performance — approximately 85 N/mm² compressive and 23 N/mm² tensile strength at 7 days
- Cures shrinkage-free and without expansion pressure, permitting anchors close to free edges and in groups
- Works reliably in dry or damp concrete, widening its use on real, imperfect site conditions
- Styrene-free and odour-free, and formulated for hot and tropical climates common across India
- Additional approvals cover seismic C1 loading, contact with drinking water (NSF/ANSI 61) and ISO 834-1 fire testing
- Non-sag thixotropic body stays in overhead and horizontal holes; standard cartridge guns dispense it
Limitations & considerations
- Cure and open time are strongly temperature-dependent — as little as ~3 minutes open time at +40 °C, so hot-weather placement demands speed
- Not suitable for hollow blocks on its own; Sika recommends AnchorFix-1 (with perforated sleeves) for hollow masonry
- Cartridge must be at least +10 °C to cure at low ambient temperatures, needing conditioning on cold-morning sites
- Performance depends entirely on rigorous hole cleaning — compressed air and steel-brush cycles are mandatory, not optional
- Full epoxy cure (up to ~24 hours at +5–10 °C) is slower than polyester or hybrid resins where quick turnaround is the priority
- Load design must follow ETA/ICC-ES data and qualified anchor-design methods — it is not a fill-and-forget product
Selection & best practice
Results live or die on the hole. Drill to the correct diameter and embedment, then clean rigorously: blow out with oil-free compressed air (about 6 bar) from the base of the hole at least twice until the return air runs dust-free, brush with the correct oversized steel brush at least twice, then repeat the blow-brush-blow cycle exactly as the datasheet sets out. Wipe threaded rods and rebar free of oil, grease and corrosion. Before injecting, pump the gun until both parts extrude as one uniform grey and discard that first material. Inject from the bottom of the hole upward, withdrawing the nozzle slowly to avoid trapping air, and use extension tubing for deep holes. Insert the anchor with a slow rotating motion within the open time so some resin flows out around it, then do not move or load it until the full curing time for that temperature has elapsed. Check the cure table against site temperature first — in Indian summer heat the open time can be only minutes.
Specifications
| Composition | Epoxy resin based, 2-part, thixotropic |
| Mixing ratio | Part A : Part B = 1 : 1 by volume |
| Pack sizes | 400 ml and 600 ml side-by-side cartridges |
| Density (A+B mixed) | ~1.49 kg/l |
| Compressive strength | ~85 N/mm² (7 days, +20 °C, ASTM D 695) |
| Tensile / flexural strength | ~23 N/mm² / ~45 N/mm² (7 days, +20 °C) |
| Open (gel) time | ~3 min at +40 °C to ~20 min at +10–15 °C |
| Curing time | ~3 h at +40 °C to ~24 h at +5–10 °C |
| Substrate temperature | +5 °C min. to +40 °C max. |
Industry use cases
RC repair & rehabilitation
Post-installed rebar dowels to extend slabs, beams and columns, using the ETA 14/0368 rebar-connection approval as the design basis for continuity with existing steel.
Industrial & plant
Holding-down bolts for pumps, compressors and machine bases where shrinkage-free epoxy resists the fatigue of continuous vibration better than expansion anchors.
Structural steel & fabrication
Threaded-rod fixing of base plates, cleats and bracing connections onto concrete, with cracked-concrete and seismic C1 data available for the connection design.
Infrastructure & water
Anchoring into damp holes and near water-retaining structures, backed by NSF/ANSI 61 drinking-water-contact certification.
Facade & safety fixings
Cladding brackets, canopies, handrails and barrier posts anchored into concrete and solid masonry where edge distances are tight.
Frequently asked questions
Is Sika AnchorFix-3001 an epoxy or an epoxy-acrylate resin?
Can it be used in cracked concrete and for rebar connections?
Will it work in a damp or wet hole?
How long before I can load the anchor?
Can I fix into hollow blocks with it?
What pack sizes and guns do I need?
How we position Sika AnchorFix-3001
Within the Sika anchoring range, AnchorFix-3001 is the high-end, fully-approved structural choice. Where you only need a fast fixing into solid concrete without cracked-concrete duty, Sika AnchorFix-2+ (a quicker hybrid) or AnchorFix-1 is often more economical — and AnchorFix-1 with perforated sleeves is the correct answer for hollow blockwork, which 3001 cannot serve alone. For large-volume grouting of baseplates and pockets rather than drilled-hole anchoring, look to Sika’s cementitious grouts such as SikaGrout. Across our other brands, Space Arc can also supply comparable structural anchoring systems from Fosroc (Lokfix and Nitofix resin ranges) and from Master Builders Solutions, so if a project specifies a particular manufacturer we can match the duty rather than force one product to fit.
Fosroc Lokfix — Specify Lokfix when a polyester-resin anchor giving same-day load in warm conditions is acceptable and full epoxy cracked-concrete/seismic approvals are not the governing requirement.
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