Water Penetration Testing of Single Wythe Residential Load-Bearing Clay Masonry Wall Systems

2009 ◽  
pp. 137-137-12
Author(s):  
WM McGinley ◽  
DA Brosnan
Keyword(s):  
Masonry Wall ◽  
Water Penetration ◽  
Load Bearing ◽  
Penetration Testing

scholarly journals Research on Damage Characteristics of Brick Masonry under Explosion Load

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Jifeng Wei ◽  
Zhixin Du ◽  
Yonghui Zheng ◽  
Oundavong Ounhueane
Keyword(s):  
Power Function ◽  
Explosive Charge ◽  
Masonry Wall ◽  
Pressure Vessels ◽  
Brick Masonry ◽  
Ejection Velocity ◽  
Load Bearing ◽  
Damage Characteristics ◽  
Explosion Load ◽  
The Relationship

As the main structural component of partition wall or load-bearing wall, brick masonry has been widely used in construction engineering. However, brick and mortar are all brittle materials prone to crack. Nowadays, fireworks, gas stoves, high-pressure vessels, and other military explosives may explode to damage nearby structures. Many explosion casualties had shown that the load-bearing capacity of brick masonry decreased dramatically and cracks or fragments appeared. Previous studies mainly focused on noncontact explosion in which shock wave is the main damage element. In fact, the response and damage effect of brick masonry wall under contact explosion are more complex, which attracts more attention now. In order to explore the damage characteristics of brick masonry under explosion load, a series of simulations and verification experiments are conducted. RHT and MO granular material models are introduced to describe the behaviour of brick and masonry, respectively, in simulation. The combination effect of front compressive wave and back tensile wave are main factors influencing the breakage of masonry wall. The experimental results are well in accordance with the simulation results. The front cross section dimension of crater is closely related to the radius of spherical explosive charge. A power function predictive model is developed to express the relationship between the radius of hole and the radius of explosive. Furthermore, with increasing the quantity of explosive charge, the number and ejection velocity of fragments are all increased. The relationship between maximum ejection velocity and the quantity of explosive also can be expressed as a power function model.

Reducing floodwater ingress rates through an exterior masonry wall of a domestic building

2015 ◽  
Vol 33 (3) ◽  
pp. 196-209 ◽  
Author(s):  
David W. Beddoes ◽  
Colin Booth
Keyword(s):  
Design Methodology ◽  
Initial Rate ◽  
Masonry Wall ◽  
Masonry Walls ◽  
Treatment Procedure ◽  
Water Penetration ◽  
Content Type ◽  
Surface Impregnation ◽  
Before And After ◽  
Rate Of Absorption

Purpose – Experimental field test apparatus has been used to determine the inter-variability and intra-variability floodwater ingress rates of the masonry wall of a domestic building, before and after preparation with an improved surface treatment procedure. The purpose of this paper is to discuss this issue. Design/methodology/approach – Replicated and repeated simulations of floodwater conditions (600 mm head) outside a building were created, before and after the wall was treated with a combination of mortar admixture and surface impregnation. Findings – Untreated and treated floodwater ingress rates were 4.99 litres/hour (234.99 litres/hour/m2) and 1.74 litres/hour (81.90 litres/hour/m2), respectively, and display high intra-variability before treatment. These preliminary results indicate water penetration through masonry is linked to the initial rate of absorption of brick units and perceivably the workmanship of the bricklayer. Originality/value – Reductions in floodwater penetration from outside a building, by the impregnation and admixture treatments of masonry walls, can be achieved to manageable levels. However, the target for rates of water ingress through permeable masonry of < 10 litres/hour/m2, to accord with values for kitemark products, still needs further work.

scholarly journals Investigation on Lateral Loading on Masonry Walls

2021 ◽  
Vol 19 (2) ◽  
pp. 33-40
Author(s):  
Hari Ram Parajuli ◽  
Arjun Ghimire
Keyword(s):  
Bearing Capacity ◽  
Shear Failure ◽  
Masonry Wall ◽  
Lateral Loading ◽  
Wire Mesh ◽  
Nonlinear Static Analysis ◽  
Load Bearing Capacity ◽  
Maximum Increase ◽  
Load Bearing ◽  
Maximum Decrease

5) Though a traditional material used for construction for ages, masonry is a complex composite material, and its mechanical behavior is influenced by a large number of factors, is not generally well understood. This research aims to study the methodology available in the literature to evaluate the increase in performance of masonry by applying different reinforcement options under in-plane lateral loading. Nonlinear static analysis has been carried out as part of this research to achieve the above objectives. Different unreinforced masonry wall panels were analyzed at various load conditions. Material properties for the masonry wall were taken from the experimental test results of previous literature. The walls were first checked for two failure mechanisms. The stress distributions of walls were checked in each step of analysis and shear failure, and rocking failure was found. Each wall was then analyzed for six different reinforcement options. The comparison of results obtained from the reinforced wall analysis with that of the unreinforced wall indicated significant increase in lateral load-bearing capacity and decreased wall displacement with reinforcement. The maximum increase in load-bearing capacity was achieved by adding chicken wire mesh or CFRP bands throughout the wall while the maximum decrease in displacement was achieved by adding 12 mm diameter bars at the spacing of one meter.

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