Experimental Investigation on Masonry with Textile Reinforcement in Thin Bed Joints

2019 ◽  
Vol 817 ◽  
pp. 404-411 ◽  
Author(s):  
Dorothea Saenger ◽  
Michael Raupach
Keyword(s):  
Earth Pressure ◽  
Masonry Wall ◽  
Masonry Building ◽  
Lateral Loads ◽  
Research Project ◽  
Ongoing Research ◽  
Load Bearing ◽  
Flexural Tensile Strength ◽  
Reinforced Masonry ◽  
Building Components

The application of textile reinforcement can help to increase the load-bearing capacity of masonry building components, especially those subjected to lateral loads caused by wind, earth pressure or earthquake. The reinforcement can be applied externally or be integrated in the bed joint. The key part of an ongoing research project is to investigate the bonding and load-bearing behavior of masonry building components reinforced with textile in thin bed joints with the aim to develop reinforcing elements. With these reinforcing elements for bed joints the construction of basements and higher buildings will be more attractive with masonry. In the first part of the project, the relevant material and bond properties of preselected materials were determined, and a suitable textile was selected. In the second part, four-point bending tests on unreinforced and reinforced masonry wall specimens were carried out in order to investigate the effectiveness of bed joint textile reinforcement to increase the masonry flexural tensile strength. In the third part, a proposal for the design of prototypical reinforcing elements will be worked out. This paper deals with the two first parts of the research project.

scholarly journals Experimental Examination of Hollow Brick Masonry Wall with Reinforcement

2019 ◽  
Vol 8 (4) ◽  
pp. 4680-4684 ◽  
Keyword(s):  
Shear Walls ◽  
Unreinforced Masonry ◽  
Masonry Wall ◽  
Masonry Walls ◽  
Masonry Building ◽  
Brick Wall ◽  
High Wind ◽  
Load Bearing ◽  
Reinforced Masonry ◽  
Hollow Brick

The research aims at conducting a quality research with Reinforcement of a hollow brick wall. The empty internal sections significantly lower the dead load. With a better surface finish, the side of the block was cast, minimizing the cost of plastering. Several sample mixes are tested to achieve a finished surface. The respective frames were cast with and without reinforcement and the test results were compared. The blocks were used to build masonry walls and ' load-bearing strength ' of the walls was tested. It is possible to use the reinforced hollow block as a load-bearing wall. Nearly 75 percent of the deaths related to the earthquake in the last century,Buildings have collapsed, the majority of which (more than 70 percent)is due to the collapse of buildings made of masonry. Most of the properties in India are Unreinforced Masonry (URM) buildings that are weak and vulnerable even under moderate earthquakes and that function on the wall due to high wind forces, causing severe damage to high wind loads and it is recognized that Reinforced Masonry Building has many advantages over unreinforced masonry building.The use was very limited in Indian building practices and there are still no approved codes and shear walls were used in most constructions, even in mild earthquakes, instead of reinforced masonry walls

Investigation of the load-bearing behavior of composite joints in cross-section supplements for concrete structures

2021 ◽  
Author(s):  
Christian Knorrek ◽  
Sven Bosbach ◽  
Josef Hegger
Keyword(s):  
Bearing Capacity ◽  
Structural Concrete ◽  
Load Bearing Capacity ◽  
Research Project ◽  
Cross Sectional ◽  
Ongoing Research ◽  
Load Bearing ◽  
Existing Structures ◽  
Composite Joint ◽  
Bearing Behavior

<p>The strengthening with cross-sectional supplements made of reinforced concrete is already of great importance in building, bridge, and industrial constructions and will be further developed in the future because of the increasing demands on existing structures [1]- [3].</p><p>As part of an ongoing research project at the Institute of Structural Concrete at RWTH Aachen University, funded by the German Federation of Industrial Research Associations (AiF), a correlation between the method of surface treatment of the old concrete, the measured roughness, the type of concrete supplementation, and the load-bearing capacity of the composite joint has to be derived by means of new systematic test series. As a result, a database, and a possible practical guide on the load-bearing capacity of different combinations of old concretes, surface treatments, supplementary concrete layers, and bonding conditions will be developed. This paper will present the initial findings from this research project.</p>

Information Needs of Microenterprise Owners in Louisiana

2013 ◽  
Author(s):  
Tao Jin
Keyword(s):  
Information Needs ◽  
Wide Spectrum ◽  
Research Project ◽  
Ongoing Research ◽  
Industrial Sectors

This presentation will report on an ongoing research project about the information needs of microenterprise owners in Louisiana. Microenterprises are those businesses with fewer than five employees or sole proprietorships with no employees. They exist across all industrial sectors and incorporate a wide spectrum of information needs.Cette communication présente un projet de recherche en cours s'intéressant aux besoins informationnels des propriétaires de microentreprises de la Louisiane. Les microentreprises comptent moins de cinq employés, y compris celles à propriétaire unique sans employé, et sont présentes dans tous les secteurs d'activités. Les besoins informationnels varient donc grandement.

Chinese Television in Africa

2021 ◽  
pp. 026327642110120
Author(s):  
Alessandro Jedlowski
Keyword(s):  
Soft Power ◽  
The Political ◽  
Power Dynamics ◽  
Economic Factors ◽  
Research Project ◽  
Chinese Media ◽  
Ongoing Research ◽  
The Media ◽  
Chinese Television ◽  
Media Company

On the basis of the results of an ongoing research project on the activities of the Chinese media company StarTimes in Nigeria and Côte d’Ivoire, this paper analyses the fluid and fragmentary dimension of the engagements between Chinese media and African publics, while equally emphasizing the power dynamics that underlie them. Focusing on a variety of ethnographic sources, it argues for an approach to the study of Chinese media expansion in Africa able to take into account, simultaneously, the macro-political and macro-economic factors which condition the nature of China–Africa media interactions, the political intentions behind them (as, for example, the Chinese soft power policies and their translation into specific media contents), and the micro dimension of the practices and uses of the media made by the actors (producers and consumers of media) in the field.

In-plane response of unreinforced masonry walls confined by reinforced concrete tie-columns and tie-beams

2017 ◽  
Vol 20 (11) ◽  
pp. 1632-1643 ◽  
Author(s):  
Masoud Amouzadeh Tabrizi ◽  
Masoud Soltani
Keyword(s):  
Numerical Study ◽  
Nonlinear Behavior ◽  
Numerical Approach ◽  
Masonry Wall ◽  
Masonry Walls ◽  
Lateral Loads ◽  
Confined Masonry ◽  
Smeared Crack ◽  
Modeling Strategy ◽  
Reversed Cyclic

This article focuses on the experimental and analytical investigations of masonry walls surrounded by tie-elements under in-plane loads. The experimental results of an unconfined and a confined masonry wall, tested under reversed cyclic lateral loads, are presented. For numerical study, a micro-modeling strategy, using smeared-crack-based approach, is adopted. In order to validate the numerical approach, experimental test results and data obtained from the literature are used, and through a systematic parametric study, the influence of adjoining walls and number of tie-columns on the seismic behavior of confined masonry panels is numerically assessed and a simple but rational method for predicting the nonlinear behavior of these structures is proposed.

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.

scholarly journals Welcome Intrusions: Capturing the Unexpected in Translators’ Prefaces to Dante’s Divine Comedy

2018 ◽  
Vol 6 (1) ◽  
pp. 1-10
Author(s):  
Marella Feltrin-Morris
Keyword(s):  
Divine Comedy ◽  
Source Text ◽  
Research Project ◽  
Ongoing Research ◽  
Authentic Voice

As part of an ongoing research project, this essay examines a number of translators’ prefaces to Dante’s Divine Comedy, summarizing recurring patterns and then focusing on deviations from the norm. The majority of these prefaces tend to follow a script, particularly in the case of retranslations of classical texts, which require an acknowledgment of past translations, a homage to the authority of the source text and a display of the translator’s expertise. However, occasional detours from the predictable constellation of themes deserve closer scrutiny, since they give a more authentic voice to the individuals who engaged with the text in its deepest form, not merely within the confines of a prescriptive formula, but expanding the potential of this unique space towards new avenues of discovery.

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