Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Full-scale Blast Test Response of Partially Grouted Masonry Walls
This paper summarizes recent testing conducted as part of a collaborative research program among the Air Force Research Laboratory (AFRL), the Portland Cement Association (PCA), and the National Concrete Masonry Association (NCMA). The stated objective of the broader cooperative research program is 'to develop blast protection data for concrete building products typically used in construction and to develop improvements to these designs as needed to improve blast resistance.' The most recent component of the program focused on the blast impulse load response of partially grouted concrete masonry unit (CMU) walls that minimally comply with the standards of the Department of Defense Unified Facilities Criteria (UFC) and other relevant non-DoD specifications. Three design sections were evaluated: (1) a 6-inch standard block masonry wall reinforced with No. 3 rebar at 32-inch nominal spacing, (2) an 8-inch standard block masonry wall reinforced with No. 4 rebar at 48-inch nominal spacing, and (3) a cavity wall consisting of the 8-inch standard reinforced CMU wythe, plus a 4-inch clay facing brick veneer with 2-inch thick extruded polystyrene rigid board insulation and a 1-inch air gap between the structural wythe and the veneer. The test program included (1) large- displacement static resistance testing under uniform pressure in a vacuum chamber and (2) full- scale explosion arena testing. During the static testing, displacements were recorded as each test panel was loaded to collapse, and the resistance function results were assessed against the resistance definitions assumed by standard blast design methodologies. Interior and exterior videography was also used to record the progression of failure. Subsequent to the static testing, three full- scale explosion arena tests were conducted; each experiment involved one each of the three test panel designs (nine total panels tested).
Full-scale Blast Test Response of Partially Grouted Masonry Walls
This paper summarizes recent testing conducted as part of a collaborative research program among the Air Force Research Laboratory (AFRL), the Portland Cement Association (PCA), and the National Concrete Masonry Association (NCMA). The stated objective of the broader cooperative research program is 'to develop blast protection data for concrete building products typically used in construction and to develop improvements to these designs as needed to improve blast resistance.' The most recent component of the program focused on the blast impulse load response of partially grouted concrete masonry unit (CMU) walls that minimally comply with the standards of the Department of Defense Unified Facilities Criteria (UFC) and other relevant non-DoD specifications. Three design sections were evaluated: (1) a 6-inch standard block masonry wall reinforced with No. 3 rebar at 32-inch nominal spacing, (2) an 8-inch standard block masonry wall reinforced with No. 4 rebar at 48-inch nominal spacing, and (3) a cavity wall consisting of the 8-inch standard reinforced CMU wythe, plus a 4-inch clay facing brick veneer with 2-inch thick extruded polystyrene rigid board insulation and a 1-inch air gap between the structural wythe and the veneer. The test program included (1) large- displacement static resistance testing under uniform pressure in a vacuum chamber and (2) full- scale explosion arena testing. During the static testing, displacements were recorded as each test panel was loaded to collapse, and the resistance function results were assessed against the resistance definitions assumed by standard blast design methodologies. Interior and exterior videography was also used to record the progression of failure. Subsequent to the static testing, three full- scale explosion arena tests were conducted; each experiment involved one each of the three test panel designs (nine total panels tested).
Full-scale Blast Test Response of Partially Grouted Masonry Walls
M. I. Hammons (Autor:in) / B. T. Bewick (Autor:in) / J. S. Davidson (Autor:in)
2011
10 pages
Report
Keine Angabe
Englisch
Public Health & Industrial Medicine , Job Environment , Environmental & Occupational Factors , Structural Analyses , Detonations, Explosion Effects, & Ballistics , Structural Mechanics , Reinforced concrete , Walls , Blast loads , Concrete , Impulse loading , Static tests , Masonry , Deflection , Symposia , Test and evaluation , Blast resistant shelters , Blast effects , Full scale testing , Resistance functions , Blast resistance , Cmu(Concrete masonry units) , Ufc(Unified facilities criteria)
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