Experimental and numerical assessment of the location-based impact of grouting defects on the tensile performance of the fully grouted sleeve connection
The presence of grouting defects emanating from construction operations constitutes a major threat to the structural integrity of the grouted sleeve connection of precast concrete members. This work presents a location-based assessment of the impact of grouting defects on the tensile performance of...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2022-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/3553/3605 |
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| _version_ | 1841562958105149440 |
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| author | Kulondwa Kahama Espoir Xie Fuzhe Chunhua Lu Isaac Offei |
| author_facet | Kulondwa Kahama Espoir Xie Fuzhe Chunhua Lu Isaac Offei |
| author_sort | Kulondwa Kahama Espoir |
| collection | DOAJ |
| description | The presence of grouting defects emanating from construction operations constitutes a major threat to the structural integrity of the grouted sleeve connection of precast concrete members. This work presents a location-based assessment of the impact of grouting defects on the tensile performance of the grouted sleeve connection. Twenty-two specimens with different configurations of defects were subjected to a uniaxial tensile experiment. Corresponding numerical models were proposed, validated and used to conduct a sensitivity analysis of the connection to the defect's location while considering different design confinements of grouting materials. Experimental and numerical studies revealed the following outcome: In consideration of confinement parameters, when the defect of size 3d is located in the mid-span anchorage length, the variation of the sleeve-to-bar diameter (ds/d) from 2.66 (lower design limit) to 3.55 (upper design limit) changed the drop in the ultimate capacity from 19% to 44% below the connection's design requirement. The governing parameters of the grout-bar bond stiffness were the defect's location and degree of confinement. This work proposes a theoretical diagnosis model and a risk assessment catalogue as a promising step toward establishing a computerized diagnosis model of the defective connection to enlighten rational maintenance actions in actual construction |
| format | Article |
| id | doaj-art-e3bf347014334dd592000e0123120bf7 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2022-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-e3bf347014334dd592000e0123120bf72025-01-03T00:38:47ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932022-07-01166143746010.3221/IGF-ESIS.61.2910.3221/IGF-ESIS.61.29Experimental and numerical assessment of the location-based impact of grouting defects on the tensile performance of the fully grouted sleeve connectionKulondwa Kahama EspoirXie FuzheChunhua LuIsaac OffeiThe presence of grouting defects emanating from construction operations constitutes a major threat to the structural integrity of the grouted sleeve connection of precast concrete members. This work presents a location-based assessment of the impact of grouting defects on the tensile performance of the grouted sleeve connection. Twenty-two specimens with different configurations of defects were subjected to a uniaxial tensile experiment. Corresponding numerical models were proposed, validated and used to conduct a sensitivity analysis of the connection to the defect's location while considering different design confinements of grouting materials. Experimental and numerical studies revealed the following outcome: In consideration of confinement parameters, when the defect of size 3d is located in the mid-span anchorage length, the variation of the sleeve-to-bar diameter (ds/d) from 2.66 (lower design limit) to 3.55 (upper design limit) changed the drop in the ultimate capacity from 19% to 44% below the connection's design requirement. The governing parameters of the grout-bar bond stiffness were the defect's location and degree of confinement. This work proposes a theoretical diagnosis model and a risk assessment catalogue as a promising step toward establishing a computerized diagnosis model of the defective connection to enlighten rational maintenance actions in actual constructionhttps://www.fracturae.com/index.php/fis/article/view/3553/3605grout-bar bondgrouting defectsgrouted sleeve connectionnumerical modellingrisk assessment |
| spellingShingle | Kulondwa Kahama Espoir Xie Fuzhe Chunhua Lu Isaac Offei Experimental and numerical assessment of the location-based impact of grouting defects on the tensile performance of the fully grouted sleeve connection Fracture and Structural Integrity grout-bar bond grouting defects grouted sleeve connection numerical modelling risk assessment |
| title | Experimental and numerical assessment of the location-based impact of grouting defects on the tensile performance of the fully grouted sleeve connection |
| title_full | Experimental and numerical assessment of the location-based impact of grouting defects on the tensile performance of the fully grouted sleeve connection |
| title_fullStr | Experimental and numerical assessment of the location-based impact of grouting defects on the tensile performance of the fully grouted sleeve connection |
| title_full_unstemmed | Experimental and numerical assessment of the location-based impact of grouting defects on the tensile performance of the fully grouted sleeve connection |
| title_short | Experimental and numerical assessment of the location-based impact of grouting defects on the tensile performance of the fully grouted sleeve connection |
| title_sort | experimental and numerical assessment of the location based impact of grouting defects on the tensile performance of the fully grouted sleeve connection |
| topic | grout-bar bond grouting defects grouted sleeve connection numerical modelling risk assessment |
| url | https://www.fracturae.com/index.php/fis/article/view/3553/3605 |
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