Chemical Anchor Technical Handbook

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Theory Section Types of Drilling Methods Chemical Anchoring Product Overview Chemical Anchoring Theory Contents Applications Additional Information Product Details Product Overview Chemical Anchoring Contents Applications Theory Additional Information Drilling Holes More Information There are many ways of drilling holes. Rotary drilling does not use the hammer function and is especially suited for perforated bricks or base materials with low rigidity. Hammer drilling makes use of the hammer function of professional hammer drills and is suited for hard base materials such as concrete. Diamond core drilling is a vibration-free method of drilling that requires special equipment with diamond drill bits. It is mostly used with wet drilling, but dry drilling is also possible. • The approvals of almost all approved anchors specify rotary or hammer drilling. • Drill bits with excessively worn cutting edges should not be used (see approval stipulations). • The respective approval must be observed with regards to the cleaning of drill holes (brushed and blown out). • Also included in the anchor approval is the drilling depth, which refers to a specific base material thickness. Without an approval, the following can be used as a rule of thumb for general applications: required base material thickness = drilling depth + 50 mm. • The location of new holes to be drilled after misdrills (such as if iron is struck or if the hole was in the wrong location) is regulated in the approvals. The distance from a misdrill must usually be two times the drilling depth of the misdrill. A misdrill hole must be sealed. • Due to the following, diamond bits are only allowed in exceptional cases: – The wall of the drill hole may be too smooth for the anchor. – Standing moisture or dampness may drastically reduce the load bearing capacity of the anchor (especially with injection methods). – There is a risk of drilling through supporting reinforcing iron. • Unless the stipulations of the respective approval state otherwise, standing water must be removed from the drill hole of shear anchors or injection systems. Below freezing temperatures, the anchor should be set immediately after the hole is drilled to avoid the formation of ice crystals in the drill hole. Product Details 1.2
Theory Section How Anchors Hold in Base Materials Chemical Anchoring Contents Applications Chemical Anchoring Theory Product Overview Form Closure Friction R R F exp F exp Undercut R R Installation Types N N N There are three basic working principles that make an anchor hold in a building material. A form closure is produced between the anchor rod and the hammer-drilled rough hole wall by a cured resin adhesive. Friction, R transfers the tensile load, N, to the base material. The expansion force, F exp , is necessary for this to take place. It is produced, for example, by driving in an expansion plug. The tensile load, N, is in equilibrium with the supporting forces, R, with keying acting on the base material. Product Overview Chemical Anchoring Theory Contents Applications Product Details There are several types of installations. With through-hole mounting, the attachment part (bore pattern) is used to create the drill hole and pushes the anchor into the base material itself. The diameter of the hole must in part be greater than or equal to the drill-hole diameter. Pre-insertion mounting creates the drill hole and inserts the anchor into the base material before the attachment part is installed. When using spaced mounting, the attachment part to be fastened is installed with a space to ensure the tensile and compressive strength. Both through-hole and pre-insertion mounting can be used with this technique. Product Details • Distance = lever arm a • Bending moment = shear force * lever arm Additional Information • Mb = V · a [Nm] Additional Information 1.3
Page 1 and 2: Chemical Anchor Technical Handbook
Page 3 and 4: Applications Notice Chemical Anchor
Page 5 and 6: Applications Overview Chemical Anch
Page 7 and 8: Theory Section About Building Mater
Page 9 and 10: Theory Section About Building Mater
Page 11: Theory Section Other Base Materials
Page 15 and 16: Theory Section Failure Modes Chemic
Page 17 and 18: Theory Section Reinforcement Bars C
Page 19 and 20: Theory Section Types of Steel Quali
Page 21 and 22: Theory Section Measurement Basics C
Page 23 and 24: Chemical Anchoring Theory Section M
Page 25 and 26: Theory Section Measurement Guidelin
Page 27 and 28: Theory Section Anchor Design Chemic
Page 29 and 30: Theory Section Anchor Design Chemic
Page 31 and 32: Theory Section Differences Compared
Page 33 and 34: Theory Section ChemFast PRO Anchori
Page 35 and 36: Product Overview Product Technologi
Page 37 and 38: Product Overview Product Technologi
Page 39 and 40: Product Overview Product Availabili
Page 41 and 42: Product Overview Cleaning and Produ
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Page 59 and 60: Product Details CF900 Chemical Resi
Page 61 and 62: Product Details CF900 Certification
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Product Details CF900 ICE Technical
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ChemFast PRO Calculation Software C
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Contact Information Worldwide Locat
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