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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6985
Title: Preliminary study on the bond properties of the PDCC/concrete repair system
Authors: Zhu, Honggang
Leung, Christopher K. Y.
Cao, Qian
Keywords: Fiber reinforced materials
Repairing material
Rehabilitation
Concrete structures
Interaction
Bonding
Shear
Tension
Issue Date: Feb-2011
Citation: To appear in Journal of materials in civil engineering
Abstract: Pseudo-ductile cementitious composite (PDCC) is an effective and durable repair material for concrete structures. Silane is commonly used to enhance the resistance of concrete to water and chemical penetration. By combining PDCC with silane, a novel repair and/or protection system for concrete structures can be produced. As silane application may affect the PDCC-concrete interfacial interaction and bond capacity, the effects of silane application on the bond properties of the PDCC/concrete repair system were investigated in this study with the direct shear test and pull-off test. Specimens with and without silane treatment were prepared for both kinds of tests. Results show that direct shear test and pull-off test can be employed to study the bond properties of the PDCC/concrete repair system. The interfacial interaction between PDCC and sufficiently cured concrete is strong even though the concrete has been moistly cured for 4 months when PDCC is cast. When silane is applied between concrete and PDCC, the PDCC-concrete bond capacity measured in the direct shear test shows almost no change while the PDCC-concrete bond capacity measured in the pull-off test is reduced.
Rights: © 2011 ASCE. Journal of Materials in Civil Engineering (doi: 10.1061/(ASCE)MT.1943-5533.0000296)
URI: http://hdl.handle.net/1783.1/6985
Appears in Collections:CIVL Journal/Magazine Articles

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