Analysis of behavior and uniaxial compression failure modes in ungrouted hollow concrete block masonry and their implication in design expressions

被引：0
|
作者：
Alvarez-Perez, Jose [1 ]
Mesa-Lavista, Milena [1 ]
Chavez-Gomez, Jorge H. [1 ]
Miguel, G. Fajardo-San [1 ]
Carpio-Santamaria, Franco A. [2 ]
Garcia-Cedeno, Ramon [1 ]
机构：
[1] Univ Autonoma Nuevo Leon, Fac Ingn Civil FIC UANL, Struct Dept, Ave Univ S-N,Ciudad Univ, San Nicolas De Los Garza 66455, NL, Mexico
[2] Univ Veracruzana UV, Inst Ingn, Boca Del Rio 94294, Mexico
来源：
JOURNAL OF BUILDING ENGINEERING | 2024年 / 98卷
关键词：
Hollow concrete block; Compressive strength; Mortar bedding; Plastic equivalent strain; Micro-numerical model; PLASTIC-DAMAGE MODEL; SENSITIVITY-ANALYSIS; TENSILE-STRENGTH; FINITE-ELEMENT; PREDICTION; MECHANICS;
D O I：
10.1016/j.jobe.2024.111048
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this study, new analytical expressions for the design and revision of ungrouted masonry of hollow concrete blocks under gravitational effects were developed. These expressions can predict the compressive strength and modulus of elasticity for full and face-shell mortar beddings. A trend chart was generated, considering various modes of failure for different strength relationships between blocks and mortar. The study revealed that the main international masonry design codes underestimate the compression resistance of masonry when using weak mortar in combination with full mortar bedding. Results obtained using the Finite Element Method indicated that the optimal compression strength ranges were: 62-70 % for weaker mortar than the block with full mortar bedding; 152 % for block weaker than the mortar with full mortar bedding; and close to 67 % with face-shell bedding mortar.
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页数：32
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