Dynamic Response of Retrofitted Masonry Walls for Blast Loading

Urgessa, Girum; Maji, Arup

doi:10.1061/(asce)em.1943-7889.0000128

Cited by 44 publications

(13 citation statements)

References 10 publications

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“…(2) Fragmentation is a key indicator of the effectiveness [13] of the mitigation techniques employed as binary response flying debris or no flying debris.…”

Section: Discussionmentioning

confidence: 99%

“…FRP increases the strength and ductility of the structure while limiting the amount of flying debris. Several different studies have addressed the use of FRP for blast protection of masonry walls in the past 15 years [6][7][8][13][14][15][16][17][18][19]. Derivatives to FRP are carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer (GFRP).…”

Section: Materials Descriptionsmentioning

confidence: 99%

“…These characteristics have made ECC a possible candidate for increasing masonry's resistance to blast loading. [13] conducted a study with eight masonry walls. Four of the eight walls were reinforced with an inorganic matrix containing a liquid potassium silicate solution and an amorphous silica powder.…”

Section: Engineered Cementitious Compositesmentioning

confidence: 99%

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Blast Protection of Unreinforced Masonry Walls: A State-of-the-Art Review

Lantz

Maynez

Cook

et al. 2016

Advances in Civil Engineering

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The recent rise of terrorist attacks has reinforced the need for mitigation of damage caused by blast loading on unreinforced masonry walls. The primary goal of the techniques is to prevent the loss of life while simultaneously preserving the integrity of the structure. This paper presents a compilation of recently available literature on blast protection of unreinforced masonry walls. It seeks to present the state of the art in this field, including mitigation techniques considered as well as testing methods selected. Fiber reinforced polymers and polyurea are the two dominant retrofitting techniques being assessed in the field. Other techniques include but are not limited to polyurethane, steel sheets, and aluminum foam. Since there is no widely implemented standard for blast loading test procedures, direct comparisons between the efficiencies of the mitigation techniques proposed are not always feasible. Although fragmentation is an indicator of the efficiency of retrofits, it is currently measured by subjective observation of postblast debris.

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“…(2) Fragmentation is a key indicator of the effectiveness [13] of the mitigation techniques employed as binary response flying debris or no flying debris.…”

Section: Discussionmentioning

confidence: 99%

Section: Materials Descriptionsmentioning

confidence: 99%

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Blast Protection of Unreinforced Masonry Walls: A State-of-the-Art Review

Lantz

Maynez

Cook

et al. 2016

Advances in Civil Engineering

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“…Time dependent measurements from the confined masonry wall response with high support adhesion coefficients to the explosion waves were registered successfully and the information obtained for verification and validation of the computer code were used. Urgessa and Maji (2009) performed an explosion test in full scale in a structure constructed by fiber reinforced polymers (FRP) reinforced masonry wall. It was observed that reinforcement was capable to tolerate the explosion load.…”

Section: Introductionmentioning

confidence: 99%

The behavior of confined masonry walls against outside contact blast loading

Rahimi¹,

Bayat²,

Baranizadeh³

et al. 2018

10.5267/j.esm

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Study of behavior of building structures under blast loads is an important issue for design of high reliable structures made of concrete material. Hence, in previous studies the enclosed wall under blast loads, open-air explosion has been investigated through experiments. In this study, the experimental results reported in the literature for dynamic performance of a masonry wall subjected to high strain dynamic loads (i.e. contact blast and air burst test) are simulated numerically using finite element method (FEM) by utilizing soft particle hydrodynamics (SPH). Comparison of simulated numerical results with the experimental data demonstrates the ability and accuracy of FEM analyses in predicting the response of confined masonry walls subjected to dynamic loads.

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“…Research has been carried out to improve the blast resistance of new and existing reinforced concrete (RC) structures. The following techniques have been proposed for improving the blast resistance of RC or unreinforced masonry slabs or walls: (a) strengthening with fiber reinforced polymer composites [2][3][4][5][6][7] or steel plates [8]; (b) employing fiber reinforced concrete as the slab material [8][9][10][11][12][13]; (c) use of a sprayed-on polymer [14]; and (d) use of double-layered precast thin plates made of concrete or polyethylene fiber reinforced concrete with an air cavity between the two layers [15]. A state-of-the art review of research on the blast resistance of FRP or polymer strengthened RC and concrete masonry structures has been presented [2]; it was noted that there is a lack of in-depth research in understanding the fundamental behavior of FRP strengthened structures under blast loading; in addition, it was recommended that further research should be carried out on methods to determine static post-blast load resistance.…”

Section: Introductionmentioning

confidence: 99%

Reinforced concrete and fiber reinforced concrete panels subjected to blast detonations and post-blast static tests

Pantelides

Garfield

Richins

et al. 2014

Engineering Structures

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Results of an experimental study of reinforced concrete panels under blast detonations are presented. The primary purpose of the tests was to collect data for validating simulation methods for blast loads. The scaled distance ranged from 0.41 m/(kg) 1/3 to 0.57 m/(kg) 1/3 and hence the tests are close-in detonations. Four types of 1.2 m square panels were subjected to blast to investigate the performance of new walls: reinforced concrete (RC) panels; fiber reinforced concrete (FRC) panels without additional reinforcement; FRC panels reinforced with steel bars; and RC panels reinforced with glass fiber reinforced polymer (GFRP) bars. Another RC panel type was built which was retrofitted with external GFRP laminates on both faces. The performance of the panels is classified into three categories as medium protection, very low protection, and protection below antiterrorism standards. FRC panels reinforced with steel bars had the best performance for new construction. Panels that survived the blast detonation without sustaining a breach were tested under monotonic static loads to determine their static post-blast load resistance.

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Dynamic Response of Retrofitted Masonry Walls for Blast Loading

Cited by 44 publications

References 10 publications

Blast Protection of Unreinforced Masonry Walls: A State-of-the-Art Review

Blast Protection of Unreinforced Masonry Walls: A State-of-the-Art Review

The behavior of confined masonry walls against outside contact blast loading

Reinforced concrete and fiber reinforced concrete panels subjected to blast detonations and post-blast static tests

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