Seismic behavior of AAC infill walls insulated with cementitious lightweight panels in reinforced concrete frames


Kasapgil S. M. , BİNİCİ B., CANBAY E.

Engineering Structures, vol.248, 2021 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 248
  • Publication Date: 2021
  • Doi Number: 10.1016/j.engstruct.2021.113215
  • Journal Name: Engineering Structures
  • Journal Indexes: Science Citation Index Expanded, Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, Geobase, ICONDA Bibliographic, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Keywords: Autoclaved aerated concrete, Seismic, Insulated wall, Out-of-plane, MASONRY INFILLS, SLIDING JOINTS, RC FRAMES, PERFORMANCE, CAPACITY

Abstract

© 2021 Elsevier LtdAutoclaved aerated concrete (AAC) walls are commonly used as infill walls in reinforced concrete frames. Thermal properties of infill walls in cold regions can be improved by bonding additional insulation panels. In this study, eight half-scale, one-bay, one-story reinforced concrete frames with insulated AAC infill walls were tested under cyclic increasing in-plane (IP) displacement excursions to simulate earthquake demands. Two different methods of insulation arrangements were studied by using mineral-based cementitious materials. In addition to in-plane loading, out-of-plane (OOP) and combined in-plane and out-of-plane (IP + OOP) tests were conducted under constant axial load and increasing cyclic displacement excursions. It was observed that insulated AAC infill walls had limited deformation capacity with premature failure of the insulation plates. The observed damage limits of the insulated AAC infills were compared with the codes' drift ratio limits. It was concluded that such walls should be classified as fragile components with limited drift capacity.