Seismic Performance of Infilled Reinforced Concrete Frame with Crumb Rubber Mortar Wall Panel

Nonlinear Analysis Seismic Analysis Infill Wall Panel Crumb Rubber Cement Mortar.

Authors

  • Kritsada Chayaboot Department of Civil Engineering, Faculty of Engineering, Khon Kaen University,, Thailand
  • Maetee Boonpichetvong
    maeteeb@kku.ac.th
    1) Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand. 2) Sustainable Infrastructure Research and Development Center, Faculty of Engineering, Khon Kaen University,, Thailand https://orcid.org/0009-0007-6192-8688
  • Tanyada Pannachet 1) Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand. 2) Sustainable Infrastructure Research and Development Center, Faculty of Engineering, Khon Kaen University,, Thailand
  • Vanchai Sata 1) Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand. 2) Sustainable Infrastructure Research and Development Center, Faculty of Engineering, Khon Kaen University,, Thailand
  • Chatpan Chintanapakdee 3) Disaster and Risk Management Information Systems Research Group, Chulalongkorn University, Thailand. 4) Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University,, Thailand

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In this paper, the seismic performance of reinforced concrete (RC) frames with crumb rubber mortar wall panels is reported. The tests of the crumb rubber mortar were conducted to obtain model parameters for equivalent diagonal compression struts. With a higher percentage of sand replacement by crumb rubber, the unit weight, the compressive strength, the tensile strength, and the modulus of elasticity of the crumb rubber cement mortar are decreased. Nonlinear pushover analysis of a simple frame shows that the RC frame with a wall panel with less crumb rubber demonstrates lower lateral deformation ability. The failure modes are affected by the amount of crumb rubber and are dependent on the modeling choice of the equivalent compression strut as the wall panel representative. Finally, the seismic performance of the RC building was studied by the equivalent static approach to explore the influence of the crumb rubber mortar wall panels on internal forces and deformations of the frame. With a higher percentage of crumb rubber, the weight of the infill wall panels and the overall weight of the building are reduced, which meets lower seismic base shear demand. This benefit is, however, traded off with higher lateral deformation and also higher inter-story drift of the studied building frames.

 

Doi: 10.28991/CEJ-2024-010-02-09

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