Experimental Study on the Shear Behavior of Precast Wall Concrete Joints with/without Dowel Reinforcement
1
Zhongheng Construction Group Co. LTD, Nanchang 330038, China
2
Department of Civil Engineering, Nanchang University, Nanchang 330031, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(7), 1726; https://doi.org/10.3390/ma13071726
Received: 5 February 2020
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Revised: 31 March 2020
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Accepted: 1 April 2020
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Published: 7 April 2020
(This article belongs to the Section Construction and Building Materials)
The precast shear wall behavior in the serviceability and ultimate limit states depends on the shear and shear-flexural behavior of the joints between the precast components or between the precast component and footing. This study presents a series of tests on the shear strength of joints, which were applied to the interface of precast shear walls. The tested parameters included the joint types, the numbers of shear keys, the existence of high strength steel bars inserted at the joints, and the levels of confining stress. The shear capacity, stiffness, and shear transfer mechanisms of these joints were investigated. It could be concluded that the epoxied and high strength reinforcing joints had consistently higher shear strength than that of dry and plain joints. For the specimens with an inclined angle at the end of the keys of less than 60 degrees, the width of the dry joint opening may be excessively large, resulting in large shear slip and the key not shearing-off under confining stress of less than 1.0 MPa. The tested results were compared with AASHTO and other design criteria. Several formulas regarding the joint shear capacities were also proposed according to the specifications and the tested results.
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Keywords:
precast concrete joint; shear strength; dry; epoxy resin; high strength steel bars; friction
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MDPI and ACS Style
Zhi, Q.; Xiong, X.; Yang, W.; Liu, S.; Xiong, J. Experimental Study on the Shear Behavior of Precast Wall Concrete Joints with/without Dowel Reinforcement. Materials 2020, 13, 1726. https://doi.org/10.3390/ma13071726
AMA Style
Zhi Q, Xiong X, Yang W, Liu S, Xiong J. Experimental Study on the Shear Behavior of Precast Wall Concrete Joints with/without Dowel Reinforcement. Materials. 2020; 13(7):1726. https://doi.org/10.3390/ma13071726
Chicago/Turabian StyleZhi, Qing, Xinfu Xiong, Wenjie Yang, Sha Liu, and Jingang Xiong. 2020. "Experimental Study on the Shear Behavior of Precast Wall Concrete Joints with/without Dowel Reinforcement" Materials 13, no. 7: 1726. https://doi.org/10.3390/ma13071726
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