Title:
Investigation of Interface Shear Transfer in Engineered Cementitious Composites
Author(s):
Adham Abu-Abaileh
Publication:
Web Session
Volume:
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/17/2021
Abstract:
Interface Shear Transfer (IST) is critical for achieving composite behavior in many concrete structures, such as the connection between bridge girders and cast-in-place decks. This research sought to evaluate the application of Engineered Cementitious Composite (ECC) in IST application compared to Normal Concrete (NC) using Iosipescu 4-point bending shear test (Fig. 1). The ECC has been invented to resolve the need of reinforcement in contrast with the traditional NC members. Test variables included roughness condition of the interface (roughened or smooth), presence of reinforcement (no reinforcement or 2#3 rebar), and the type of concrete (ECC and/or NC). In case of roughened interface members with no interface reinforcement, the results showed that the IST strength of members with ECC at both layers (E-E) was 1.3 times of similar members made with NC layers (N-N). In case of smooth interface with 2#3 interface reinforcement, the IST strength is approximately the same for ECC and NC members. In case of one layer made with ECC and the other layer made with NC, the following observations were made: in case of roughened interface with no reinforcement, the IST strength (15kip) was higher than both cases of E-E (10kip) and N-N (7.5kip); in case of smooth interface with 2#3 reinforcement, the IST strength (25kip) was lower than both E-E and N-N cases (30kip); and in case of roughened interface with 2#3 reinforcement, the IST strength (31kip) was lower than that of the N-N case (36kip).