The behaviour of reinforced concrete frames with masonry wall infills is influenced a lot by the stiffness and strength difference between the frame and the infill, causing early detrimental damage to the infill or to the critical concrete columns. The paper reports the results from shake table seismic tests on a full-scale reinforced concrete (RC) frame building with modified hollow clay block (orthoblock brick) infill walls, within INMASPOL SERA Horizon 2020 project. The building received innovative resilient protection using Polyurethane Flexible Joints (PUFJs) made of polyurethane resin (PU), applied at the frame-infill interface in different schemes. Further, PUs were used for bonding of glass fibre grids to the weak masonry substrate to form Fibre Reinforced Polyurethanes (FRPUs) as an emergency repair intervention. The test results showed enhancement in the in-plane and out-of-plane infill performance under seismic excitations. The results confirmed remarkable delay of significant infill damages at very high RC frame inter-story drifts as a consequence of the use of PUFJs. Further, the PUFJ protection enabled the resilient repair of the infill even after very high inter-story drift of the structure up to 3.7%. The applied glass FRPU system efficiently protected the damaged infills against collapse under out-of-plane excitation while they restored large part of their in-plane stiffness.

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The paper presents the results of a series of 6 shear tests on full scale highly thermal insulating clay unit masonry walls. The walls consisted of units with large voids filled with mineral wool with a thermal conductivity of λ = 0,07 W/(m · K). The aim of the investigations was the verification of the in‐plane‐shear resistance of this type of thermal insulating clay unit masonry in addition to the tests reported in [1]. The current design rules for clay unit masonry in DIN EN 1996‐1‐1/NA are rather conservative compared to the test results for thermal insulating units.

Der Beitrag stellt die Ergebnisse einer Versuchsreihe von sechs Schubversuchen an geschosshohen Wänden aus hochwärmedämmendem Ziegelmauerwerk vor. Die Wände wurden aus Wärmedämmziegeln mit einer Wärmeleitfähigkeit von l = 0,07 W/(m · K) erstellt, deren Kammern mit Mineralwolle gefüllt waren. Ziel der Untersuchungen war der Nachweis der Scheibenschubtragfähigkeit des wärmedämmenden Ziegelmauerwerks, als Ergänzung zu den in [1] durchgeführten Versuchen. Die derzeitigen Bemessungsregeln für Ziegelmauerwerk nach DIN EN 1996-1-1-1/NA sind im Vergleich zu den Prüfergebnissen für wärmedämmende Hochlochziegel konservativ.