Shear and Flexural Behavior of Autoclaved Aerated Concrete Confined Masonry Walls

2018 ◽  
Keyword(s):  
Flexural Behavior ◽  
Masonry Walls ◽  
Confined Masonry ◽  
Autoclaved Aerated Concrete ◽  
Aerated Concrete

Shear and Flexural Behavior of Autoclaved Aerated Concrete Confined Masonry Walls

2018 ◽  
Vol 115 (5) ◽  
Author(s):  
Jorge Varela-Rivera ◽  
Luis Fernandez-Baqueiro ◽  
Rodrigo Alcocer-Canche ◽  
Jose Ricalde-Jimenez ◽  
Ricardo Chim-May
Keyword(s):  
Flexural Behavior ◽  
Masonry Walls ◽  
Confined Masonry ◽  
Autoclaved Aerated Concrete ◽  
Aerated Concrete

scholarly journals On the Seismic Performance of Autoclaved Aerated Concrete Self-Insulation Block Walls

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 2942
Author(s):  
Yun Liu ◽  
Gonglian Chen ◽  
Zhipeng Wang ◽  
Zhen Chen ◽  
Yujia Gao ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Seismic Performance ◽  
Shear Capacity ◽  
Seismic Load ◽  
Masonry Walls ◽  
Autoclaved Aerated Concrete ◽  
Aerated Concrete ◽  
Energy Dissipation Capacity ◽  
Insulation Block

Autoclaved aerated concrete (AAC) self-insulation block masonry is often used for the infill walls in steel and concrete frame structures. To work together with the frame under earthquake action, it is essential to understand the seismic behavior of AAC self-insulation block masonry walls. In this paper, six AAC self-insulation block masonry walls were experimentally studied under the pseudo static test. The load-displacement hysteretic curves were drawn with the test data. The failure characteristics, loading capacity, stiffness degeneration, energy dissipation capacity and hysteretic behavior are analyzed. The results indicate that the blocks underwent internal failure due to the lower strength with a larger size, but the walls had good energy dissipation capacity with a rational bearing capacity. Accompanied by the influence of vertical compressive stress on the top surface of the walls, the cracking resistance, ultimate bearing capacity, deformability and energy dissipation capacity of the walls were affected by the masonry mortar joints. Comparatively, the walls with thin-layer mortar joints had better seismic performance than those with insulation mortar joints or with vertical joints filled by mineral wool plates. Finally, the shear capacity of the walls under seismic load is evaluated referring to the formulas of current design codes for masonry walls.

Flexural Behavior of Confined Masonry Walls Subjected to In-Plane Lateral Loads

2019 ◽  
Vol 35 (1) ◽  
pp. 405-422 ◽  
Author(s):  
Jorge Varela-Rivera ◽  
Luis Fernandez-Baqueiro ◽  
Jose Gamboa-Villegas ◽  
Adda Prieto-Coyoc ◽  
Joel Moreno-Herrera
Keyword(s):  
Aspect Ratio ◽  
Flexural Strength ◽  
Compressive Stress ◽  
Flexural Behavior ◽  
Masonry Walls ◽  
Hysteretic Model ◽  
Confined Masonry ◽  
Displacement Ductility ◽  
Axial Compressive Stress ◽  
Ductility Capacity

Results of a study on the flexural behavior of confined masonry walls are presented. Six walls were tested in a laboratory under reverse cyclic loads. The variables studied were the wall aspect ratio and wall axial compressive stress. The behavior of walls was characterized by yielding of the longitudinal steel reinforcement of vertical confining elements followed by vertical and diagonal cracks on the masonry panel. The failure of walls was associated with crushing concrete of vertical confining elements. Flexural strength increased as the wall aspect ratio decreased or the wall axial compressive stress increased. The flexural strength of walls was validated using flexural theory. A displacement ductility capacity of 6 and a drift ratio capacity of 1% were proposed for the walls. A hysteretic model based on four parameters was calibrated. This model represented well the flexural behavior of the studied walls.

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