Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/221317
Title: SHEAR BEHAVIOUR OF 3D PRINTED CONCRETE SHEAR KEYS WITH EPOXY RESIN UNDER INCLINED MONOTONIC LOADING
Authors: CHAN YAO ZHENG
Keywords: 3D printing
Shear capacity
Concrete shear key
Epoxied joint
Shear behaviour
Degree of B.Sc. (Project and Facilities Management)
Project and Facilities Management
2020/2021 PFM
PFM
Building
Alexander Lin
Issue Date: 28-Dec-2020
Citation: CHAN YAO ZHENG (2020-12-28). SHEAR BEHAVIOUR OF 3D PRINTED CONCRETE SHEAR KEYS WITH EPOXY RESIN UNDER INCLINED MONOTONIC LOADING. ScholarBank@NUS Repository.
Abstract: 3D concrete printing (3DCP) has several benefits in terms of reduction in construction cost, time and waste. Complex geometries can be attained which allows for structural optimization of structures. Currently, there are no standards for the design of 3D printed concrete structures. For 3DCP to be widely used in the construction industry and to reap its benefits, there is a need to study mechanical properties of 3D printed concrete. Currently, 3DCP generally manufactures concrete elements in modular components. Precast concrete is similar to 3D printed concrete in the aspect that modular components are assembled on site to build the structure. Therefore, it is crucial to study the mechanical behavior of 3D printed concrete joints. A type of joint that was traditionally manufactured by cast in-situ concrete and later commonly manufactured by precast technology is concrete shear key joints in segmental bridges. Analogous to 3D printed concrete joints, the mechanical behavior of precast concrete shear keys was studied extensively, and standards were developed before precast technology is accepted as a construction method for segmental bridges. Therefore, the concrete shear key joint is an excellent type of joint to be used for studying the mechanical behavior of 3D printed concrete. In this study, concrete shear keys were designed and manufactured by 3DCP with different joint inclination angles. Slant shear tests were carried out in the specimens to study the failure mode and to obtain shear capacity values. The experimentally obtained values are then compared with values from current prediction models.
URI: https://scholarbank.nus.edu.sg/handle/10635/221317
Appears in Collections:Bachelor's Theses

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