In this study, series of tests have been conducted to indicate the mechanical and physical properties (compressive strength, flexural strength, dry density, thermal conductivity and shrinkage) of autoclaved aerated concrete (AAC) reinforced with carbon fibres of different lengths. AG2/350 AAC block specimens without carbon fibre were prepared as a control specimen. The mixtures were prepared by replacing 0.5% weight of cement in the AAC with 4 mm, 6 mm, 12 mm length carbon fibres and these mixtures were poured into moulds and subjected to 58 °C for 4 hours to expand until reaching workable hardness. After preliminary curing, the produced AAC specimens were subjected to 180 °C and pressure of 11 bar for 6 hours in a steam cure until required hardness. The mechanical and physical properties of the reference and the fibre reinforced AAC specimens were determined and compared to each other. As a result, the use of 12 mm fibre reinforcement in AAC gave the best performance in comparison to the other fibre reinforcements of different lengths by increasing compressive strength for 10.63%, flexural strength of 31.48% and thermal conductivity up to 4.23% while reducing the shrinkage ratio to 51.47%. Herein for the specimen using 0.5% replacement of the AAC in weight with 12 mm carbon fibre is recommended.

Autoclaved aerated concrete (AAC) reinforced panels are used to construct easily erected, energy efficient, low-rise prefabricated buildings. This study aims to contribute to the understanding of the seismic response of reinforced-AAC-wall-panel buildings. For this purpose, a full-scale two-story building constructed on a building site by using reinforced AAC panels was tested under two-way cyclic displacement excursions up to near collapse. The test results showed that the test building had a lateral load capacity of 1.6 times its weight with a global displacement ductility of about 3.5. The first story of the building sustained significant damage due to the rocking of the building followed by panel crushing. The slab-wall connections did not sustain any damage during the test. Afterward, numerical models of AAC panels were calibrated by using component test results from the literature. Nonlinear static analysis was conducted on the test building by using the proposed modeling approach. A reasonably good agreement was observed between the test results and numerical model estimations both for the envelope and the cyclic response. Finally, incremental dynamic analyses were conducted on the test building in order to observe the response of the building under severe earthquake motions. The dynamic analyses results showed that AAC buildings are expected to behave in their pre-yielding regions under design earthquakes. Furthermore, the reserved ductility and available over strength can enable AAC buildings survive the maximum considered earthquakes without collapse. K E Y W O R D S design, drift, in situ testing, reinforced wall panel, seismic 1 GENERAL Autoclaved aerated concrete (AAC) emerged as a construction material in the beginning of the 20th century and AAC took its modern form in 1923 after the development of the industrialized autoclaving process (or pressurized steam curing) as explained by Eriksson [1]. Subsequently, reinforced AAC elements in the form of wall/slab panels were produced in 1935 [2]. AAC, with its porous cellular structure, became popular in the construction industry within a short period of time due to its advantages such as being light weight, good insulator [3,4], fire resistant [5,6], environmentally friendly [7]. AAC, being produced in a factory-controlled environment with precise production details allows to minimize the construction errors while increasing the speed of erection. Upon using reinforcement with this engineered material, load carrying capacity and ductility can be increased efficiently to allow its use as load bearing members in walls and slabs. Recent needs on sustainable resilient and energy efficient housing can easily be addressed by using AAC as a prefabricated building system. In this regard, seismic safety and estimation of the expected performance of AAC low-rise buildings are extremely important for countries located in seismic zones. The mechanical properties of AAC were investigated by determining the compressive strength, tensile strength, split tensile streng...

Anlässlich der Olympischen Segelwettbewerbe in Kiel wurden im Jahre 1972 der ZOB und das darüber befindliche Parkhaus errichtet. Das zweigeschossige und für etwa 560 Stellplätze ausgerüstete Parkhaus war ursprünglich mit drei Fußgängerbrücken an den Bahnhofskai, in Richtung Hauptbahnhof und zur Innenstadt hin angebunden. Diese Brücken wurden im Laufe der Jahre zurückgebaut. Der Neubau des Atlantic Hotels führte 2009 dazu, dass ein Teilabriss des Parkhauses und des ZOB notwendig wurde. Zeitgleich begannen die Vorbereitungen zur Umgestaltung des verbliebenen ZOB-Areals. Die ursprüngliche Überlegung, das durch den Hotelneubau verkleinerte Bauwerk zu sanieren und zusätzlich um zwei Parkebenen zu erhöhen, wurde jedoch verworfen. Der schlechte bauliche Zustand und die Planung eines neuen attraktiven Omnibusbahnhofs erforderten letztendlich den Abriss. Bei der neuen Planung des ZOB wurden zwei Baufelder definiert. Der Entwurf für das neue Parkhaus auf Baufeld 2 berücksichtigte als eigenständiges Gebäude die Vorgaben zur Geschossanzahl, zu den Abstandsflächen, zur maximalen Traufhöhe und zu den verwendeten Materialien der Nachbarbebauung. Durch die Rundung der Fassade am Stresemannplatz erhalten aus dem Westen kommende Passanten einen freieren Blick auf den Hafen. Die über das 6. OG hinaus erhöhte Spindel dient als weithin sichtbarer Erkennungspunkt.