Title:
Horizontal Shear Behaviors of Normal Weight and Lightweight Concrete Composite T-Beams
Author(s):
Zhuangcheng Fang/ Haibo Jiang/ Airong Liu/ Jiahui Feng/ Yuanhang Chen
Publication:
IJCSM
Volume:
12
Issue:
Appears on pages(s):
Keywords:
horizontal shear behaviors, composite T-beam, lightweight concrete, normal weight concrete, interface
DOI:
Date:
8/2/2018
Abstract:
This paper presents the results of recent research on the interface shear behavior of normal weight and lightweight
concrete composite T-beams. In the experimental program 12 beams and necessary control cylinders were tested to
provide experimental cases with the variables of interface preparation, clamping stress and lightweight slab concrete
strength. Compared with 7 equations developed previously, it has been found that those formulas, especially the
ones from current AASHTO and ACI design codes, give a conservative theoretical prediction of horizontal shear capacity
of composite T-beams. Based on the experimental results, a more accurate equation was developed to predict the
interface shear transfer strength of composite concrete T-beam. By comparing the experimental results of previous
beam tests and shear-friction push-off tests for different types of concrete with both rough and smooth interface
published in literature, it has been found that the proposed formula is reliable in predicting the horizontal shear
strength of concrete composite T-beams.