Influence of Inertia on the Dynamic Compressive Strength of Concrete
The rate sensitivity of concrete material is closely related to the inertia and viscous effects. However, the effect of inertia on the dynamic strength of concrete remains unclear. In this paper, digital image correlation technology was applied to study the strain variation of dry and saturated conc...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/20/7278 |
| _version_ | 1797471779060449280 |
|---|---|
| author | Zhangchen Qin Dan Zheng Xinxin Li Haicui Wang |
| author_facet | Zhangchen Qin Dan Zheng Xinxin Li Haicui Wang |
| author_sort | Zhangchen Qin |
| collection | DOAJ |
| description | The rate sensitivity of concrete material is closely related to the inertia and viscous effects. However, the effect of inertia on the dynamic strength of concrete remains unclear. In this paper, digital image correlation technology was applied to study the strain variation of dry and saturated concrete with different loading rates. The test results indicated that the strain gradually decreased with the distance from the load end, and the strain gradient around the load region increased with the strain rate, especially for saturated concrete. Then, a single degree of freedom model was established to evaluate the dynamic compressive strength of elastic concrete. The calculated results indicated that the influence of inertia on the dynamic increase factor (DIF) was negligible for concrete within a low strain rate. When the strain rate is larger than 10<sup>0</sup>/s, the inertial effect on the strength of concrete should be considered. After that, a quasi-static concrete damaged plasticity (CDP) model was employed to simulate the influence of inertia on the stress distribution and axial reaction force at the loaded end of concrete under different rates of compressive loading and verified with experimental results. The results obtained in this study indicated that the dynamic nominal strength of concrete obtained from the tests could not be directly used for structural analysis which may overestimate the effect of inertia on the dynamic response of the structure. |
| first_indexed | 2024-03-09T19:52:54Z |
| format | Article |
| id | doaj.art-2e68822d0d0d46e7acdc7f1cb3536574 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T19:52:54Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-2e68822d0d0d46e7acdc7f1cb35365742023-11-24T01:05:05ZengMDPI AGMaterials1996-19442022-10-011520727810.3390/ma15207278Influence of Inertia on the Dynamic Compressive Strength of ConcreteZhangchen Qin0Dan Zheng1Xinxin Li2Haicui Wang3School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaThe rate sensitivity of concrete material is closely related to the inertia and viscous effects. However, the effect of inertia on the dynamic strength of concrete remains unclear. In this paper, digital image correlation technology was applied to study the strain variation of dry and saturated concrete with different loading rates. The test results indicated that the strain gradually decreased with the distance from the load end, and the strain gradient around the load region increased with the strain rate, especially for saturated concrete. Then, a single degree of freedom model was established to evaluate the dynamic compressive strength of elastic concrete. The calculated results indicated that the influence of inertia on the dynamic increase factor (DIF) was negligible for concrete within a low strain rate. When the strain rate is larger than 10<sup>0</sup>/s, the inertial effect on the strength of concrete should be considered. After that, a quasi-static concrete damaged plasticity (CDP) model was employed to simulate the influence of inertia on the stress distribution and axial reaction force at the loaded end of concrete under different rates of compressive loading and verified with experimental results. The results obtained in this study indicated that the dynamic nominal strength of concrete obtained from the tests could not be directly used for structural analysis which may overestimate the effect of inertia on the dynamic response of the structure.https://www.mdpi.com/1996-1944/15/20/7278inertia effectstrain ratestrengthdynamic increase factorconcrete |
| spellingShingle | Zhangchen Qin Dan Zheng Xinxin Li Haicui Wang Influence of Inertia on the Dynamic Compressive Strength of Concrete Materials inertia effect strain rate strength dynamic increase factor concrete |
| title | Influence of Inertia on the Dynamic Compressive Strength of Concrete |
| title_full | Influence of Inertia on the Dynamic Compressive Strength of Concrete |
| title_fullStr | Influence of Inertia on the Dynamic Compressive Strength of Concrete |
| title_full_unstemmed | Influence of Inertia on the Dynamic Compressive Strength of Concrete |
| title_short | Influence of Inertia on the Dynamic Compressive Strength of Concrete |
| title_sort | influence of inertia on the dynamic compressive strength of concrete |
| topic | inertia effect strain rate strength dynamic increase factor concrete |
| url | https://www.mdpi.com/1996-1944/15/20/7278 |
| work_keys_str_mv | AT zhangchenqin influenceofinertiaonthedynamiccompressivestrengthofconcrete AT danzheng influenceofinertiaonthedynamiccompressivestrengthofconcrete AT xinxinli influenceofinertiaonthedynamiccompressivestrengthofconcrete AT haicuiwang influenceofinertiaonthedynamiccompressivestrengthofconcrete |