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Experimental study on mechanical properties of corroded grouted sleeve splice
https://orcid.org/0000-0002-8991-2529
Abstract Grouted sleeve splices are widely used in precast-concrete (PC) structures. Although extensive tensile tests have been conducted on grouted sleeves, the force mechanism and changing rules of grouted sleeve connections as influenced by environmental corrosion have rarely been investigated. Accelerated corrosion and monotonic tensile tests were conducted on twenty-five grouted sleeves. The investigated variables of the sleeve splices were the degree of corrosion, rebar eccentricity, and geometrical sizes of the rebar and sleeve. Based on the test results, the three-dimensional corrosion characteristics of the sleeve were analyzed, and the influences of the corrosion distribution, rebar eccentricity, and sleeve size on the failure mode, force–displacement curve, and strain distribution of the sleeves were discussed. The results indicated that the surface roughness parameters S z, S a, and S q of the sleeve increased with an increase in corrosion. As a result of sleeve corrosion, the failure mode of the grouted sleeve connection changed from rebar fracture to sleeve fracture, accompanied by an increase in the longitudinal and circumferential strains of the sleeve, and reductions in strength, deformation capacity, and energy dissipation ability. In addition, the rebar eccentricity led to an uneven strain distribution in the circumferential direction.
Highlights Electrochemistry accelerated corrosion and monotonic static tensile tests for grouted sleeve connections are conducted. The three-dimensional corrosion morphology of the sleeve surface is established using a blue light 3D scanning technique. The failure mode of the sleeve connections transferred from rebar failure to sleeve failure due to corrosion is analyzed. The influence of corrosion, rebar eccentricity, and sleeve size on the mechanical behavior of the connectors is discussed. The strain damage of the corroded sleeve under different rebar eccentricities is compared.
Experimental study on mechanical properties of corroded grouted sleeve splice
https://orcid.org/0000-0002-8991-2529
Abstract Grouted sleeve splices are widely used in precast-concrete (PC) structures. Although extensive tensile tests have been conducted on grouted sleeves, the force mechanism and changing rules of grouted sleeve connections as influenced by environmental corrosion have rarely been investigated. Accelerated corrosion and monotonic tensile tests were conducted on twenty-five grouted sleeves. The investigated variables of the sleeve splices were the degree of corrosion, rebar eccentricity, and geometrical sizes of the rebar and sleeve. Based on the test results, the three-dimensional corrosion characteristics of the sleeve were analyzed, and the influences of the corrosion distribution, rebar eccentricity, and sleeve size on the failure mode, force–displacement curve, and strain distribution of the sleeves were discussed. The results indicated that the surface roughness parameters S z, S a, and S q of the sleeve increased with an increase in corrosion. As a result of sleeve corrosion, the failure mode of the grouted sleeve connection changed from rebar fracture to sleeve fracture, accompanied by an increase in the longitudinal and circumferential strains of the sleeve, and reductions in strength, deformation capacity, and energy dissipation ability. In addition, the rebar eccentricity led to an uneven strain distribution in the circumferential direction.
Highlights Electrochemistry accelerated corrosion and monotonic static tensile tests for grouted sleeve connections are conducted. The three-dimensional corrosion morphology of the sleeve surface is established using a blue light 3D scanning technique. The failure mode of the sleeve connections transferred from rebar failure to sleeve failure due to corrosion is analyzed. The influence of corrosion, rebar eccentricity, and sleeve size on the mechanical behavior of the connectors is discussed. The strain damage of the corroded sleeve under different rebar eccentricities is compared.
Experimental study on mechanical properties of corroded grouted sleeve splice
https://orcid.org/0000-0002-8991-2529
Abstract Grouted sleeve splices are widely used in precast-concrete (PC) structures. Although extensive tensile tests have been conducted on grouted sleeves, the force mechanism and changing rules of grouted sleeve connections as influenced by environmental corrosion have rarely been investigated. Accelerated corrosion and monotonic tensile tests were conducted on twenty-five grouted sleeves. The investigated variables of the sleeve splices were the degree of corrosion, rebar eccentricity, and geometrical sizes of the rebar and sleeve. Based on the test results, the three-dimensional corrosion characteristics of the sleeve were analyzed, and the influences of the corrosion distribution, rebar eccentricity, and sleeve size on the failure mode, force–displacement curve, and strain distribution of the sleeves were discussed. The results indicated that the surface roughness parameters S z, S a, and S q of the sleeve increased with an increase in corrosion. As a result of sleeve corrosion, the failure mode of the grouted sleeve connection changed from rebar fracture to sleeve fracture, accompanied by an increase in the longitudinal and circumferential strains of the sleeve, and reductions in strength, deformation capacity, and energy dissipation ability. In addition, the rebar eccentricity led to an uneven strain distribution in the circumferential direction.
Highlights Electrochemistry accelerated corrosion and monotonic static tensile tests for grouted sleeve connections are conducted. The three-dimensional corrosion morphology of the sleeve surface is established using a blue light 3D scanning technique. The failure mode of the sleeve connections transferred from rebar failure to sleeve failure due to corrosion is analyzed. The influence of corrosion, rebar eccentricity, and sleeve size on the mechanical behavior of the connectors is discussed. The strain damage of the corroded sleeve under different rebar eccentricities is compared.
Experimental study on mechanical properties of corroded grouted sleeve splice
Yuan, Wenting (author) / Wang, Yuren (author) / Dong, Zhaoxing (author) / Fang, Qinghe (author)
2023-12-25
Article (Journal)
Electronic Resource
English
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