Explosive Testing of Polymer Retrofit Masonry Walls

Davidson, James S.; Porter, Jonathan R.; Dinan, Robert J.; Hammons, Michael I.; Connell, James D.

doi:10.1061/(asce)0887-3828(2004)18:2(100)

Cited by 164 publications

(72 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of polymers to strengthen masonry subjected to blast loads has been reviewed in [37] with an experimental data set collected from several papers. A special mention is deserved by [38], which refers to the application of a sprayed-on polymer on masonry walls.…”

Section: Structural and Seismic Retrofittingmentioning

confidence: 99%

Assessment Method for Combined Structural and Energy Retrofitting in Masonry Buildings

2017

View full text Add to dashboard Cite

Abstract:The retrofitting of existing masonry buildings is now a crucial problem for Europe. Indeed, structural safety and energy efficiency should represent the target of any renovation. The proposal of a new synthetic performance parameter is presented and discussed. Following this approach, in this paper, after a review of the main studies available in the literature, a proposal of a new performance parameter approach is presented and discussed. It is capable of taking into account both the structural and thermal aspects of masonry retrofitting. An emblematic set of reinforcements and energy improvements for masonry walls is examined. An example, generalized formulas, and a simultaneous evaluation of the role of multiple structural and thermal parameters on masonry buildings are proposed, with a view to optimize several categories of costs related to the intervention.

show abstract

Section: Structural and Seismic Retrofittingmentioning

confidence: 99%

Assessment Method for Combined Structural and Energy Retrofitting in Masonry Buildings

2017

View full text Add to dashboard Cite

show abstract

“…Table 4.1-1 provides the key mechanical characteristics of the material considered (Davidson et al 2004). The stress-strain curve obtained from static uniaxial tension tests conducted by AFRL is shown in Fig.…”

Section: Wall Modelsmentioning

confidence: 99%

Resistance of Membrane Retrofit Concrete Masonry Walls to Lateral Pressure

Moradi

Davidson

Dinan

2008

J. Perform. Constr. Facil.

Self Cite

View full text Add to dashboard Cite

The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Mitigation techniques are currently being sought to ensure public safety in the event of intentional or accidental explosions. Building material fragmentation is a major cause of human injury during such events. Use of concrete masonry walls is a common method of building construction. Concrete masonry provides a fast inexpensive way to construct buildings of various heights; however, these walls are extremely vulnerable to blast pressure resulting in collapse, fragmentation and severe injury to occupants. Much research has been conducted using actual blast tests as well as computational methods to study the behavior of masonry walls. Blast tests examined masonry walls of various shapes and make up, as well as the use of retrofit materials to mitigate the blast damage to masonry. In the computational arena, research made use of Livermore Software -DYNamics (LS-DYNA) finite element software to simulate full-scale models of concrete masonry walls. The results were compared to the actual blast tests, but the cost of high fidelity computational models made them impractical for day-to-day design. Design tools developed by other investigators in the field have been available for the past few years; however, their accuracy remains questionable when compared to actual blast test data. The research presented in this dissertation developed resistance functions for three different scenarios of membrane retrofit unreinforced concrete masonry walls to lateral pressure. These functions were further coupled with single degree of freedom systems to predict wall response to blast loads. The analysis results were compared to field blast tests for verification. This research gives the structural engineer a practical software tool for the design of membrane retrofit masonry walls to resist lateral pressures such as wind, and various blast charges and distances.concrete, formwork walls, polymer, finite element, dynamic response ii ABSTRACT Mitigation techniques are currently being sought to ensure public safety in the event of intentional or accidental explosions. Building material fragmentation is a major cause of human injury during such events. One of the most common methods of construction in buildings is the use of concrete masonry walls. Concrete masonry provides a fast inexpensive way to construct buildings of various heights; however, these walls are extremely vulnerable to blast pressure resulting in collapse, fragmentation, and severe injury to occupants.Much research has been conducted using actual blast ...

show abstract

“…Therefore, a blast-retrofit system is needed to increase the strength and ductility of the walls, and prevent debris from entering a room. Spray-on and trowel-on polymers have proven to be successful in providing the necessary ductility and energy absorption capability (Davidson et al, 2004). In this paper, however, steel sheathing will be evaluated as a means of facilitating the need for increasing the ductility and energy absorption of infill masonry wall systems.…”

Section: Introductionmentioning

confidence: 99%

Blast-Retrofit of CMU Walls Using Steel Sheets

Salim

Dinan

Kennedy³

2006

Structures Congress 2006

Self Cite

View full text Add to dashboard Cite

Blast resistant design has come to the forefront of engineering concerns in the wake of recent terrorist threats to the United States. Safety and security are of utmost concern when designing structures, and there has been a significant rise in the demand of researching new methods of reinforcing and retrofitting structures to provide better resistance to blast loading. The focus of this research paper is on the use of steel sheathing as a method of such retrofit. Research is done to ascertain the steel strength, analyze the response of the steel to static pressure, explore strength and ductility limits, investigate connection details, and develop an analytical model of the static resistance function, which will be verified by experimental data. The analytical model for the resistance function will be used in a single-degree of freedom (SDOF) dynamic model to predict the response of steel sheathing blast-retrofitted wall systems.Coupon tests were performed to establish the stress-strain behavior of the steel material, and component beam tests were used to determine the response of the sheathing under static pressure. In addition, connection methods were analyzed and tested in an effort to determine the most suitable blast-retrofit design for a given blast, without exceeding strength or ductility limits for the steel sheets, and to develop the limit states for the retrofit system. The results of the experimental program and the analytical static and dynamic models were incorporated into a user-friendly wall analysis code for the design of steel sheathing for blast retrofit of CMU walls.

show abstract

Explosive Testing of Polymer Retrofit Masonry Walls

Cited by 164 publications

References 0 publications

Assessment Method for Combined Structural and Energy Retrofitting in Masonry Buildings

Assessment Method for Combined Structural and Energy Retrofitting in Masonry Buildings

Resistance of Membrane Retrofit Concrete Masonry Walls to Lateral Pressure

Blast-Retrofit of CMU Walls Using Steel Sheets

Contact Info

Product

Resources

About