A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Proposal and experimental verification of enhancement method for half-grouted sleeve connection quality
https://orcid.org/0000-0002-3054-1460
Abstract The grouted sleeve connection (GSC) quality is crucial to the integrity and security for precast concrete structure. To enhance the GSC quality, a Grouting Material Vibrator Device (GMVD) was proposed in this study. Based on 12 half-grouted sleeve connection (HGSC) specimens, the test variables included rebar diameters (14 mm and 25 mm) and grouting situations (vibrated and non-vibrated), the enhancement effect of GMVD on grouting density and HGSC quality was verified through ultrasonic detecting test and uniaxial tensile test separately. The results indicated that: 1) After vibration of GMVD, the grouting density and quality was improved. 2) For HGSC specimens with rebar diameter of 14 mm, whether vibrated or non-vibrated, the rebar fracture failure was shown, and the mechanical properties were considered acceptable. 3) For HGSC specimens with rebar diameter of 25 mm, the vibration transformed failure mode from rebar slip to rebar fracture, and bond strength and ultimate bearing capacity was raised. After vibration, the mechanical properties were acceptable. 4) When the rebar diameter is larger, the influence of vibration on failure mode and ultimate bearing capacity is more obvious. The research results can provide reference for enhancement method of GSC quality.
Highlights Introduce a Grouting Material Vibrator Device. Proposal of enhancement method for GSC. Ultrasonic detecting technology and uniaxial tensile test.
Proposal and experimental verification of enhancement method for half-grouted sleeve connection quality
https://orcid.org/0000-0002-3054-1460
Abstract The grouted sleeve connection (GSC) quality is crucial to the integrity and security for precast concrete structure. To enhance the GSC quality, a Grouting Material Vibrator Device (GMVD) was proposed in this study. Based on 12 half-grouted sleeve connection (HGSC) specimens, the test variables included rebar diameters (14 mm and 25 mm) and grouting situations (vibrated and non-vibrated), the enhancement effect of GMVD on grouting density and HGSC quality was verified through ultrasonic detecting test and uniaxial tensile test separately. The results indicated that: 1) After vibration of GMVD, the grouting density and quality was improved. 2) For HGSC specimens with rebar diameter of 14 mm, whether vibrated or non-vibrated, the rebar fracture failure was shown, and the mechanical properties were considered acceptable. 3) For HGSC specimens with rebar diameter of 25 mm, the vibration transformed failure mode from rebar slip to rebar fracture, and bond strength and ultimate bearing capacity was raised. After vibration, the mechanical properties were acceptable. 4) When the rebar diameter is larger, the influence of vibration on failure mode and ultimate bearing capacity is more obvious. The research results can provide reference for enhancement method of GSC quality.
Highlights Introduce a Grouting Material Vibrator Device. Proposal of enhancement method for GSC. Ultrasonic detecting technology and uniaxial tensile test.
Proposal and experimental verification of enhancement method for half-grouted sleeve connection quality
https://orcid.org/0000-0002-3054-1460
Abstract The grouted sleeve connection (GSC) quality is crucial to the integrity and security for precast concrete structure. To enhance the GSC quality, a Grouting Material Vibrator Device (GMVD) was proposed in this study. Based on 12 half-grouted sleeve connection (HGSC) specimens, the test variables included rebar diameters (14 mm and 25 mm) and grouting situations (vibrated and non-vibrated), the enhancement effect of GMVD on grouting density and HGSC quality was verified through ultrasonic detecting test and uniaxial tensile test separately. The results indicated that: 1) After vibration of GMVD, the grouting density and quality was improved. 2) For HGSC specimens with rebar diameter of 14 mm, whether vibrated or non-vibrated, the rebar fracture failure was shown, and the mechanical properties were considered acceptable. 3) For HGSC specimens with rebar diameter of 25 mm, the vibration transformed failure mode from rebar slip to rebar fracture, and bond strength and ultimate bearing capacity was raised. After vibration, the mechanical properties were acceptable. 4) When the rebar diameter is larger, the influence of vibration on failure mode and ultimate bearing capacity is more obvious. The research results can provide reference for enhancement method of GSC quality.
Highlights Introduce a Grouting Material Vibrator Device. Proposal of enhancement method for GSC. Ultrasonic detecting technology and uniaxial tensile test.
Proposal and experimental verification of enhancement method for half-grouted sleeve connection quality
Liu, Yanhui (author) / Xu, Nan (author) / Zhao, Shichun (author) / Feng, Aosong (author) / Yang, Hulin (author) / Kang, Yuqiong (author) / Che, Wangsu (author)
2024-01-22
Article (Journal)
Electronic Resource
English
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