Work

Effectiveness of SRG in shear strengthening of deep and slender concrete beams

Year: 2025

Type: article

Abstract: This study investigates Steel-Reinforced Grout (SRG) jackets’ efficiency in enhancing the shear strength in Reinforced Concrete (RC) beams with various shear span-to-depth ( a/d ) ratios, comparing them with Carbon Fabric Reinforced Cementitious Mortars (CFRCM) and Steel Reinforced Polymer (SRP) jackets. Seventeen beams underwent monotonic loading to assess the impact of the textile layer number and jacket configuration for a/d = 2.0 and 3.5. The results demonstrated that SRG, CFRCM, and SRP systems increased the shear strength by up to 124 %, 174 %, and 176 % for deep beams ( a/d = 2.0) and 170 %, 215 %, and 221 % for slender beams ( a/d = 3.5), respectively. Fully wrapped SRG and SRP systems shifted failure from brittle to ductile. An analytical model is proposed for predicting SRG strengthened beam shear capacity, accounting for the influence of a/d , with a correlation coefficient ( R 2 ) of 95.84 %.

Source: Structures

DOI: 10.1016/j.istruc.2025.108197

Authors: Xiangsheng Liu, Georgia E. Thermou

Institution: University of Nottingham

Language: English

Topic: Structural Behavior of Reinforced Concrete

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $3,510