Response of SFRC Columns under Blast Loads

Burrell, Russell P.; Aoude, Hassan; Saatçioğlu, Murat

doi:10.1061/(asce)st.1943-541x.0001186

Cited by 48 publications

(17 citation statements)

References 25 publications

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“…The control slab was cast using plain self-consolidating concrete (SCC) with a specified strength of 50 MPa (5.8 ksi). The SCC mix properties include a maximum aggregate size of 10 mm (0.4 in), a sand-to-aggregate ratio of 0.55 and a water-cement ratio of approximately 0.42 (Burrell et al, 2015). The UHPC specimens were cast using compact reinforced composite (CRC) with a specified strength of 140 MPa (20 ksi).…”

Section: Materials Parametersmentioning

confidence: 99%

Blast Behavior of One-Way Panel Components Constructed with UHPC

Aoude

Carufel

Melançon

2016

First International Interactive Symposium on UHPC

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This paper summarizes the results from three one-way slabs which were tested under gradually increasing shockwave loads using a high-capacity shock-tube at the University of Ottawa. The series includes one control slab built with conventional concrete and two companion slabs built with ultra-high performance concrete (UHPC). Results in terms of blast resistance, control of displacements, and damage tolerance are used to study the effects of the design parameters on the performance of the panels. Overall, the results demonstrate significant benefits associated with the use of UHPC in reinforced concrete slabs tested under extreme blast pressures.

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Section: Materials Parametersmentioning

confidence: 99%

Blast Behavior of One-Way Panel Components Constructed with UHPC

Aoude

Carufel

Melançon

2016

First International Interactive Symposium on UHPC

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“…The deflections or residual strengths are typically manifestations of global damage to the structure or its components. In order to prevent this damage to the structure or structural component, different methodologies have been prescribed by different research groups, such as the use of steel fiber reinforcements along with self-consolidating concrete (Burrell et al 2015), fiber-reinforced composites (Pantelides et al 2014), sacrificial materials like aluminum foam (Schenker et al 2008), or external retrofitting with fiber-reinforced polymer layers (Ha et al 2011;Wu et al 2009). However, these developments of methodologies for blast resistance of concrete structures or components are not based upon a systematic study of physics of the material under shock loading.…”

Section: Introductionmentioning

confidence: 99%

“…There have been previous studies on shock tube testing of structural components to simulate real explosive field tests. Shock tubes have been used to apply blast loads to various structural components, such as concrete slabs (Toutlemonde et al 1995), as well as steel fiber-reinforced columns for use in bridge piers (Burrell et al 2015). However, in these shock tube investigations, the entire structural response was the main focus of the study, without much detailed investigation as to what happened at the microstructure level so as to explain the physics of shock waves though concrete materials.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Response of Shock-Loaded Concrete, Mortar, and Cementitious Composite Materials in a Shock Tube Setup

Deb

Samuelraj

Mitra

et al. 2019

J. Mater. Civ. Eng.

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Microstructural changes in concrete, mortar, and cementitious composite material were investigated to determine the efficacy of these materials subjected to shock loading. An experimental methodology with the ability to generate reproducible shock waves of specified blast pressure and decay time was used to perform repeatable experiments in the range of trinitrotoluene (TNT) explosion that is unsafe for concrete columns as specified in the FEMA (Federal Emergency Management Agency) guidelines (38 kg TNT at 3.7 m). The changes in the pore volume fraction of the samples before and after shock loading were used to determine the efficacy of the materials subjected to shock loading. The study reveals that even though percentage increase in pore volume fraction before and after shock loading is highest for cementitious materials, its absolute value is low compared to that of control samples, thereby justifying the better performance of cementitious composite materials. Moreover, the size of the pores is also observed to be lower for cementitious composite samples compared to those of the and concrete samples after shock loading in comparison to the control materials in the study. The reason for the better performance of cementitious composite materials can be attributed to an increase in tensile ductility of the sample as a result of fiber addition. Apart from development of a new cementitious material for blast load mitigation, the study also demonstrates the need to consider pore size distribution in equations relating pore volume fraction to strength.

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“…Most of these studies discussed the influence of strain rate on the strength, stiffness, and ductility of FRCC without steel reinforcing bars (e.g., Naaman and Gopalaratnam 1983;Gopalaratnam and Shah 1986;ACI 1994;Banthia et al 1996;Wang et al 1996;Manolis et al 1997;Bindiganavile et al 2002). One study of impact on structural columns made of FRCC is Burrell's blast pressure tests (Burrell 2015), but the impact load and velocity are significantly larger than those in structural pounding. This study observes the behavior of one-story and one-span frame specimens made of ordinary concrete and polypropylene fiber-reinforced concrete subjected to an impact load of low velocity (5 m/s) and discusses vibration characteristics, residual restoring force characteristics, crack lengths, and spalled area of cover concrete.…”

Section: Introductionmentioning

confidence: 99%

Drop-Weight Test for RC Frame Made of Polypropylene Fiber-Reinforced Concrete

Makita

Uda

Yoshikado³

et al. 2018

ACT

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Drop-weight tests and static loading tests of RC frames made of polypropylene fiber-reinforced concrete are conducted to observe shock resistance performance and residual ductility. Experimental variables are fiber content and mass of the drop weight. In the impact test, the maximum drifts of the specimens are proportional to the mass of the drop weight although several collisions occur due to rebounding and the maximum acceleration is not always increased as the mass increases. In a static loading test, the initial stiffness is improved and crack lengths in the hinge areas of the columns are reduced by mixing the polypropylene fibers.

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Response of SFRC Columns under Blast Loads

Cited by 48 publications

References 25 publications

Blast Behavior of One-Way Panel Components Constructed with UHPC

Blast Behavior of One-Way Panel Components Constructed with UHPC

Microstructural Response of Shock-Loaded Concrete, Mortar, and Cementitious Composite Materials in a Shock Tube Setup

Drop-Weight Test for RC Frame Made of Polypropylene Fiber-Reinforced Concrete

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