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Comparisons of confined and different types of reinforcement on the behavior of masonry shear walls
Author(s) -
Jasiński Radosław
Publication year - 2018
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.873
Subject(s) - masonry , materials science , cracking , composite material , compressive strength , shear wall , reinforcement , mortar , perpendicular , masonry veneer , autoclaved aerated concrete , shear (geology) , truss , structural engineering , geometry , mathematics , engineering
Abstract This paper presents a comparison of results for shear walls: unreinforced (three walls), confined (six walls), and reinforced with two different types of reinforcements (four walls). Masonry walls made of autoclaved aerated concrete (AAC) had a thickness t = 0.18. Four series of different walls of the same length equal to l = 4.43 m and the height of h = 2.43 m were made and tested. Compressive strength of material masonry units and mortar for thin joints was equal to f b = 4.0 N/mm 2 and f m = 6.1 N/mm 2 . Compressive strength of walls (according to EN 1052‐1:2000) was f c,mv = 2.97 N/mm 2 and ( f k = 2.48 N/mm 2 ) and elastic modulus was E cm = 2.040 N/mm 2 . Walls were tested at the same initial compressive stresses perpendicular to the plane of bed joints σ c = 0.1, 0.75, and 1.0 N/mm 2 . In confined models, two external vertical cores and two horizontal beams were made and reinforced in accordance with the requirements of the European Standard EN‐1996‐1‐1. Steel truss‐type reinforcement and plastic grid placed in each bed joint were used in walls. The obtained values of stresses were compared at the time of cracking and destruction. The morphology of cracking and the mechanism of destruction were analyzed.