Experimental Study on the Influence of Freezing Pressure on the Uniaxial Mechanical Properties of Ice
In this study, a test technique that enables continuous control of the sample stress state from freezing to testing is proposed to investigate the influence of freezing pressure on the mechanical properties of ice under uniaxial compression. In this method, the water is frozen into the standard cyli...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/8651467 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832548516961976320 |
|---|---|
| author | Baosheng Wang Weihao Yang Peixin Sun Xin Huang Yaodan Zhang Fengjun Chen |
| author_facet | Baosheng Wang Weihao Yang Peixin Sun Xin Huang Yaodan Zhang Fengjun Chen |
| author_sort | Baosheng Wang |
| collection | DOAJ |
| description | In this study, a test technique that enables continuous control of the sample stress state from freezing to testing is proposed to investigate the influence of freezing pressure on the mechanical properties of ice under uniaxial compression. In this method, the water is frozen into the standard cylindrical ice specimen under high hydraulic pressure in a triaxial pressure chamber, and then, the temperature field and stress field of the ice specimens are adjusted to the initial state of the test; finally, an in situ mechanical test is conducted in the triaxial chamber. The uniaxial compression test of ice specimens with temperature of −20°C and freezing pressure of 0.5–30 MPa is performed in the strain rate range of 5 × 10−5−1.5 × 10−6 s−1. The results show that, as the freezing pressure increases, the ductile-to-brittle transition zone of the ice specimen during failure moves to the low strain rate range, and the failure mode of the specimen changes from shear failure to splitting failure. Further, the brittleness index of the ice specimen first increases, then decreases, and then again increases with the increase in freezing pressure. The brittleness index reaches the maximum (minimum) when the freezing pressure is 30 MPa (20 MPa). The peak stress of the ice specimen also increases first, then decreases, and then increases with the increase in freezing pressure. The maximum value is also at the freezing pressure of 30 MPa, but the minimum value is obtained at the freezing pressure of 0.5 MPa. The failure strain of the ice specimen first decreases and then increases with the increase in freezing pressure, and the maximum (minimum) value is achieved at the freezing pressure of 0.5 MPa (10 MPa). When the ice specimen exhibits brittle failure, the relationships between the residual stress and the freezing pressure and between the peak stress and freezing pressure are the same, but when the ice specimen exhibits ductile failure, there is no obvious relationship between the residual stress and the freezing pressure. |
| format | Article |
| id | doaj-art-082ccb821cb9470a97b71b067ede5733 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-082ccb821cb9470a97b71b067ede57332025-02-03T06:13:45ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/86514678651467Experimental Study on the Influence of Freezing Pressure on the Uniaxial Mechanical Properties of IceBaosheng Wang0Weihao Yang1Peixin Sun2Xin Huang3Yaodan Zhang4Fengjun Chen5Shanghai Construction Group Co., Ltd., Shanghai 200080, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, ChinaShanghai Construction Group Co., Ltd., Shanghai 200080, ChinaIn this study, a test technique that enables continuous control of the sample stress state from freezing to testing is proposed to investigate the influence of freezing pressure on the mechanical properties of ice under uniaxial compression. In this method, the water is frozen into the standard cylindrical ice specimen under high hydraulic pressure in a triaxial pressure chamber, and then, the temperature field and stress field of the ice specimens are adjusted to the initial state of the test; finally, an in situ mechanical test is conducted in the triaxial chamber. The uniaxial compression test of ice specimens with temperature of −20°C and freezing pressure of 0.5–30 MPa is performed in the strain rate range of 5 × 10−5−1.5 × 10−6 s−1. The results show that, as the freezing pressure increases, the ductile-to-brittle transition zone of the ice specimen during failure moves to the low strain rate range, and the failure mode of the specimen changes from shear failure to splitting failure. Further, the brittleness index of the ice specimen first increases, then decreases, and then again increases with the increase in freezing pressure. The brittleness index reaches the maximum (minimum) when the freezing pressure is 30 MPa (20 MPa). The peak stress of the ice specimen also increases first, then decreases, and then increases with the increase in freezing pressure. The maximum value is also at the freezing pressure of 30 MPa, but the minimum value is obtained at the freezing pressure of 0.5 MPa. The failure strain of the ice specimen first decreases and then increases with the increase in freezing pressure, and the maximum (minimum) value is achieved at the freezing pressure of 0.5 MPa (10 MPa). When the ice specimen exhibits brittle failure, the relationships between the residual stress and the freezing pressure and between the peak stress and freezing pressure are the same, but when the ice specimen exhibits ductile failure, there is no obvious relationship between the residual stress and the freezing pressure.http://dx.doi.org/10.1155/2021/8651467 |
| spellingShingle | Baosheng Wang Weihao Yang Peixin Sun Xin Huang Yaodan Zhang Fengjun Chen Experimental Study on the Influence of Freezing Pressure on the Uniaxial Mechanical Properties of Ice Advances in Civil Engineering |
| title | Experimental Study on the Influence of Freezing Pressure on the Uniaxial Mechanical Properties of Ice |
| title_full | Experimental Study on the Influence of Freezing Pressure on the Uniaxial Mechanical Properties of Ice |
| title_fullStr | Experimental Study on the Influence of Freezing Pressure on the Uniaxial Mechanical Properties of Ice |
| title_full_unstemmed | Experimental Study on the Influence of Freezing Pressure on the Uniaxial Mechanical Properties of Ice |
| title_short | Experimental Study on the Influence of Freezing Pressure on the Uniaxial Mechanical Properties of Ice |
| title_sort | experimental study on the influence of freezing pressure on the uniaxial mechanical properties of ice |
| url | http://dx.doi.org/10.1155/2021/8651467 |
| work_keys_str_mv | AT baoshengwang experimentalstudyontheinfluenceoffreezingpressureontheuniaxialmechanicalpropertiesofice AT weihaoyang experimentalstudyontheinfluenceoffreezingpressureontheuniaxialmechanicalpropertiesofice AT peixinsun experimentalstudyontheinfluenceoffreezingpressureontheuniaxialmechanicalpropertiesofice AT xinhuang experimentalstudyontheinfluenceoffreezingpressureontheuniaxialmechanicalpropertiesofice AT yaodanzhang experimentalstudyontheinfluenceoffreezingpressureontheuniaxialmechanicalpropertiesofice AT fengjunchen experimentalstudyontheinfluenceoffreezingpressureontheuniaxialmechanicalpropertiesofice |