New PDF release: Anchorage in Concrete Construction, First edition

By R. Eligehausen, R. Mallee, J. F. Silva(auth.)

ISBN-10: 3433011435

ISBN-13: 9783433011430

ISBN-10: 3433601356

ISBN-13: 9783433601358

A entire therapy of present fastening expertise utilizing inserts (anchor channels, headed stud), anchors (metal enlargement anchor, undercut anchor, bonded anchor, concrete screw and plastic anchor) in addition to energy actuated fasteners in concrete. It describes intimately the fastening parts in addition to their results and load-bearing capacities in cracked and non-cracked concrete. It additional specializes in corrosion behaviour, fireplace resistance and features with earthquakes and shocks. It finishes off with the layout of fastenings based on the eu Technical Approval instruction (ETAG 001), the ultimate Draft of the CEN Technical Specification 'Design of fastenings to be used in concrete' and the yank criteria ACI 318-05, Appendix D and ACI 349-01, Appendix B.Content:
Chapter 1 creation (pages 1–4):
Chapter 2 Fastening structures (pages 5–31):
Chapter three ideas (pages 33–64):
Chapter four Behaviour of headed studs, undercut anchors and steel growth anchors in non?cracked and cracked concrete (pages 65–162):
Chapter five Behaviour of cast?in anchor channels in non?cracked and cracked concrete (pages 163–179):
Chapter 6 Behaviour of bonded anchors in non?cracked and cracked concrete (pages 181–210):
Chapter 7 Behaviour of plastic anchors in non?cracked and cracked concrete (pages 211–222):
Chapter eight Behaviour of strength actuated fasteners in non?cracked and cracked concrete (pages 223–226):
Chapter nine Behaviour of screw anchors in non?cracked and cracked concrete (pages 227–235):
Chapter 10 Behaviour of anchors less than seismic loading (pages 237–248):
Chapter eleven Behaviour of anchors in fireplace (pages 249–254):
Chapter 12 Corrosion of anchors (pages 255–258):
Chapter thirteen impact of fastenings at the capability of parts during which they're put in (pages 259–263):
Chapter 14 layout of fastenings (pages 265–342):

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Extra info for Anchorage in Concrete Construction, First edition

Example text

This is typically regulated in the approval for the product. Concrete screws are available in an increasingly wide range of diameters and are generally suitable for applications in non-cracked and cracked concrete. In Germany, for example, they are approved for ceiling hangers, as well as for general applications in cracked concrete. The heat treatment of steel as required to facilitate installation of screw anchors in concrete may result in hydrogen embrittlement. This can lead to premature fatigue or stress corrosion failure.

In further tests, concrete strains measured perpendicular to the fracture plane (Fig. 23) confirm the visual observations. 01%; afterwards they increase very rapidly. This confirms the formation of microcracks which increase in length as the load increases. The microcracks intersect the first strain gauge, positioned 15 mm from the head of the stud along the fracture plane, at approximately 50% of ultimate load. The second strain gauge, positioned 35 mm from the Fig. 3 Failure mechanisms of fastenings head of the stud, is reached at roughly 70% of the ultimate load.

They may be driven by means of a special impact driver (Fig. 43) or, in other systems, with a conventional drill equipped with an adapter. The hole depth is typically set slightly longer than the screw embed- ment to provide space for the products of the thread-cutting process. The diameter of the drilled hole is matched to the geometry of the screw so that the thread cuts into the concrete and an external force can be transferred to the concrete through this positive interlocking connection. By requiring a minimum embedment for each diameter, it can be ensured that the failure mode associated with over-driving of the screw is twisting-off of the screw head, and not partial or full stripping of the concrete threads.

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Anchorage in Concrete Construction, First edition by R. Eligehausen, R. Mallee, J. F. Silva(auth.)


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