TY - GEN
T1 - Evaluation of a sprayable, ductile cement-based composite for the seismic retrofit of unreinforced masonry infills
AU - Billington, Sarah L.
AU - Kyriakides, Marios A.
AU - Blackard, Ben
AU - Willam, Kaspar
AU - Stavridis, Andreas
AU - Shing, P. Benson
PY - 2009
Y1 - 2009
N2 - A new retrofit technique for unreinforced masonry infills in non-ductile reinforced concrete frame structures is being investigated. The proposed technique uses a thin layer of sprayable, ductile fiber-reinforced mortar material referred to as Engineered Cementitious Composites, or ECC. The aim of the retrofit is to hold the masonry wall together to delay infill and frame strength degradation and enhance system ductility. Proof-of-concept experiments on retrofitted masonry prisms and beams demonstrated large increases in strength and ductility. Quasi-static, in-plane, cyclic testing of small-scale frames with masonry infills including 3 retrofit designs demonstrated a 10x increase in ductility in one design relative to the unretrofitted system. Results were used to design a retrofit for a 2/3-scale, in-plane test, where a 2.6× increase in ductility was achieved. Several finite element modeling approaches are under investigation for use in system predictions and further retrofit analyses.
AB - A new retrofit technique for unreinforced masonry infills in non-ductile reinforced concrete frame structures is being investigated. The proposed technique uses a thin layer of sprayable, ductile fiber-reinforced mortar material referred to as Engineered Cementitious Composites, or ECC. The aim of the retrofit is to hold the masonry wall together to delay infill and frame strength degradation and enhance system ductility. Proof-of-concept experiments on retrofitted masonry prisms and beams demonstrated large increases in strength and ductility. Quasi-static, in-plane, cyclic testing of small-scale frames with masonry infills including 3 retrofit designs demonstrated a 10x increase in ductility in one design relative to the unretrofitted system. Results were used to design a retrofit for a 2/3-scale, in-plane test, where a 2.6× increase in ductility was achieved. Several finite element modeling approaches are under investigation for use in system predictions and further retrofit analyses.
UR - https://www.scopus.com/pages/publications/77950845218
U2 - 10.1061/41084(364)75
DO - 10.1061/41084(364)75
M3 - Conference contribution
AN - SCOPUS:77950845218
SN - 9780784410844
T3 - Improving the Seismic Performance of Existing Buildings and Other Structures - Proc. 2009 ATC and SEI Conference on Improving the Seismic Performance of Existing Buildings and Other Structures
SP - 823
EP - 834
BT - Improving the Seismic Performance of Existing Buildings and Other Structures - Proc. 2009 ATC and SEI Conference on Improving the Seismic Performance of Existing Buildings and Other Structures
T2 - 2009 ATC and SEI Conference on Improving the Seismic Performance of Existing Buildings and Other Structures
Y2 - 9 December 2009 through 11 December 2009
ER -