CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCH
Introduction. The paper presents the results of research that allow assessing the degree of influence of pre-organized cracks on the character crack formation and on the process of the hollow-core slabs’ deformation under short-term load action.Materials and methods. The hollow-core slabs are made w...
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| Format: | Article |
| Language: | Russian |
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Siberian State Automobile and Highway University
2019-07-01
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| Series: | Вестник СибАДИ |
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| Online Access: | https://vestnik.sibadi.org/jour/article/view/889 |
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| author | V. M. Mitasov N. V. Statsenko F. K. Sametov A. M. Kurbonov |
| author_facet | V. M. Mitasov N. V. Statsenko F. K. Sametov A. M. Kurbonov |
| author_sort | V. M. Mitasov |
| collection | DOAJ |
| description | Introduction. The paper presents the results of research that allow assessing the degree of influence of pre-organized cracks on the character crack formation and on the process of the hollow-core slabs’ deformation under short-term load action.Materials and methods. The hollow-core slabs are made without prestressing – one by traditional technology, the second with pre-organized cracks in the manufacturing process. Physical experiment performed on fall-scale structure of hollow-core slabs of П66.10-81500СП. The authors conducted the tests to the calculated breaking load. Moreover, the authors presented the contrastive analysis of character crack formation and of the hollow-core slabs’ deformation of П66.10-8А500СП traditional manufacturing and with pre-organized cracks.Results. As a result, the authors confirmed the earlier hypotheses about the greater rigidity of plates with pre-organized cracks in comparison with the plates where the cracks arose stochastically and under operational load. The installation of organized cracks did not reduce the bearing capacity, thus, reduced the deformability. Therefore, the width of the crack became smaller and the deflections became less.Discussion and conclusions. In the structures of long length, which are rejected by the second limit group, the organization of cracks at the manufacturing stage allows not putting additional reinforcement to reduce the width and deflection of the crack. |
| format | Article |
| id | doaj-art-07f605f208e047b2ba9be25c2d8235b7 |
| institution | Kabale University |
| issn | 2071-7296 2658-5626 |
| language | Russian |
| publishDate | 2019-07-01 |
| publisher | Siberian State Automobile and Highway University |
| record_format | Article |
| series | Вестник СибАДИ |
| spelling | doaj-art-07f605f208e047b2ba9be25c2d8235b72025-08-20T03:43:00ZrusSiberian State Automobile and Highway UniversityВестник СибАДИ2071-72962658-56262019-07-0116336637710.26518/2071-7296-2019-3-366-377573CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCHV. M. Mitasov0N. V. Statsenko1F. K. Sametov2A. M. Kurbonov3Novosibirsk State University of Architecture and Civil Engineering (Sibstrin)Novosibirsk State University of Architecture and Civil Engineering (Sibstrin)Novosibirsk State University of Architecture and Civil Engineering (Sibstrin)Novosibirsk State University of Architecture and Civil Engineering (Sibstrin)Introduction. The paper presents the results of research that allow assessing the degree of influence of pre-organized cracks on the character crack formation and on the process of the hollow-core slabs’ deformation under short-term load action.Materials and methods. The hollow-core slabs are made without prestressing – one by traditional technology, the second with pre-organized cracks in the manufacturing process. Physical experiment performed on fall-scale structure of hollow-core slabs of П66.10-81500СП. The authors conducted the tests to the calculated breaking load. Moreover, the authors presented the contrastive analysis of character crack formation and of the hollow-core slabs’ deformation of П66.10-8А500СП traditional manufacturing and with pre-organized cracks.Results. As a result, the authors confirmed the earlier hypotheses about the greater rigidity of plates with pre-organized cracks in comparison with the plates where the cracks arose stochastically and under operational load. The installation of organized cracks did not reduce the bearing capacity, thus, reduced the deformability. Therefore, the width of the crack became smaller and the deflections became less.Discussion and conclusions. In the structures of long length, which are rejected by the second limit group, the organization of cracks at the manufacturing stage allows not putting additional reinforcement to reduce the width and deflection of the crack.https://vestnik.sibadi.org/jour/article/view/889hollow-core slabsstochastic crackspre-organized crackscrack strength |
| spellingShingle | V. M. Mitasov N. V. Statsenko F. K. Sametov A. M. Kurbonov CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCH Вестник СибАДИ hollow-core slabs stochastic cracks pre-organized cracks crack strength |
| title | CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCH |
| title_full | CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCH |
| title_fullStr | CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCH |
| title_full_unstemmed | CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCH |
| title_short | CRACK STRENGTH OF HOLLOW CORE SLABS: EXPERIMENTAL RESEARCH |
| title_sort | crack strength of hollow core slabs experimental research |
| topic | hollow-core slabs stochastic cracks pre-organized cracks crack strength |
| url | https://vestnik.sibadi.org/jour/article/view/889 |
| work_keys_str_mv | AT vmmitasov crackstrengthofhollowcoreslabsexperimentalresearch AT nvstatsenko crackstrengthofhollowcoreslabsexperimentalresearch AT fksametov crackstrengthofhollowcoreslabsexperimentalresearch AT amkurbonov crackstrengthofhollowcoreslabsexperimentalresearch |