A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigation on bond in post‐installed anchored bars and lap splices subjected to direct tension
Moment‐resisting monolithic connections between new and pre‐existing structural members are frequently used whenever existing reinforced‐concrete structures must be extended and/or strengthened. Overlapping post‐installed and cast‐in‐place bars is a common solution to provide reinforcement continuity. Nowadays, post‐installed bars with high‐performance mortars can reach higher bond strength than cast‐in‐place bars configurations. While higher performance could lead to shorter embedment lengths, uncertainties and constraints from design standards limit the potential for cost‐effective solutions. In this work, an experimental investigation on post‐installed lap splices is presented with some novelties in terms of test setup and specimen layout. The bond of a high‐performance injection mortar used in all specimens was assessed by means of tension tests. Lap length, concrete strength, and confinement by transverse reinforcement are the variable factors in the study of the load–slip behavior of the bars and the splitting resistance of the specimens. Results are in good accordance with the design formulas available in standards and empirical data published in the literature.
Investigation on bond in post‐installed anchored bars and lap splices subjected to direct tension
Moment‐resisting monolithic connections between new and pre‐existing structural members are frequently used whenever existing reinforced‐concrete structures must be extended and/or strengthened. Overlapping post‐installed and cast‐in‐place bars is a common solution to provide reinforcement continuity. Nowadays, post‐installed bars with high‐performance mortars can reach higher bond strength than cast‐in‐place bars configurations. While higher performance could lead to shorter embedment lengths, uncertainties and constraints from design standards limit the potential for cost‐effective solutions. In this work, an experimental investigation on post‐installed lap splices is presented with some novelties in terms of test setup and specimen layout. The bond of a high‐performance injection mortar used in all specimens was assessed by means of tension tests. Lap length, concrete strength, and confinement by transverse reinforcement are the variable factors in the study of the load–slip behavior of the bars and the splitting resistance of the specimens. Results are in good accordance with the design formulas available in standards and empirical data published in the literature.
Investigation on bond in post‐installed anchored bars and lap splices subjected to direct tension
Croppi, José I. (author) / Genesio, Giovacchino (author) / Piccinin, Roberto (author) / Casucci, Daniele (author) / Ahrens, Mark Alexander (author) / Mark, Peter (author)
Structural Concrete ; 24 ; 5769-5786
2023-10-01
18 pages
Article (Journal)
Electronic Resource
English
Lap Splices Anchored by Headed Bars
| Online Contents | 2006
Splitting and Bond Failure of Post-Installed Rebar Splices and Anchorings
| British Library Conference Proceedings | 2002
Post-Installed Adhesive-Bonded Splices in Bridge Decks
| NTIS | 2002
Experimental Behavior of Post-installed Lap Splices: From Bond Strength to Structural Performance
| Springer Verlag | 2025
Bond Strength of Noncontact Tension Lap Splices
| Online Contents | 1996