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The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ...
DOI: 10.14359/51740457. Date: 5/1/2024. Abstract:In the present research, an experimental study was performed to investigate the punching shear strength of isolated concrete column footings having low shear span-depth ratios (a/d). The primary test parameters included the a/d, concrete compressive strength, and soil-bearing stiffness.
A reasonable lower bound to the shear strength of low-rise walls with minimum web reinforcement was found to be 6 û f'c. The shear strength of the walls was observed to increase when the amount of vertical reinforcement in the web and boundary elements was increased. A shear-friction model was used to evaluate the shear strength provided by ...
DOI: 10.14359/2682. Date: 3/1/1990. Abstract: An experimental investigation of the shear strength of high-strength concrete beams with web reinforcement was conducted. Two series of beam tests were performed, each series consisting of five beams. All beams were designed in accordance with the provisions of ACI 318-83.
Date: 9/1/2006. Abstract:A theory for the shear resistance of reinforced concrete T-beams is presented. The theory is an extension of the theory for slender rectangular beams described in previous works. The new theory results in a simple expression showing that the shear strength of slender T-beams is a superposition of the shear strength of T ...
The shear strength predicted by the proposed method and the strut-and-tie model of ACI 318-08 are compared with available test results. The comparison shows the proposed method can more accurately predict the shear strength of reinforced concrete deep beams than the strut-and-tie model of ACI 318-08.
DOI: 10.14359/8012. Date: 7/1/1960. Abstract: Tests of two series of reinforced concrete beams with- out web reinforcement were made to investigate the behavior in shear of restrained beams. One series was designed as a study of the effects of variations in the ratio of maximum negative moment to the maximum positive moment (moment ratio).
The main test parameters were: longitudinal reinforcement ratio (1.8 and 3.2 percent); shear span ratio (2.3, 3.0, and 4.0); size (b/h = 150/250 and b/h = 300/500 mm); and concrete type (normal density concrete of cylinder strength 54, 78, and 98 MPa and lightweight aggregate concrete, 58 MPa). The results are compared with other test results ...
The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ...
verse reinforcing ratios between 0.37 and 1.47%. An equation is proposed that more accurately predicts the shear friction strength of cold-joint and. uncracked interfaces for high-strength concrete. It is recommended that the current upper shear stress limit of 0.2fc¢ be retained but that the 80. psi (5.5 MPa) shear stress limit be eliminate.