Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain Rates
In this paper, an experimental study was carried out on a rock-mortar interface specimen under three different strain rates (10−6, 10−5, and 10−4 s−1) using the MTS322 electrohydraulic servo loading system, and a new constitutive relation function of fictitious crack model (FCM) according to the ax...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5241848 |
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| author | Nan Wu Zhende Zhu Zhilei He |
| author_facet | Nan Wu Zhende Zhu Zhilei He |
| author_sort | Nan Wu |
| collection | DOAJ |
| description | In this paper, an experimental study was carried out on a rock-mortar interface specimen under three different strain rates (10−6, 10−5, and 10−4 s−1) using the MTS322 electrohydraulic servo loading system, and a new constitutive relation function of fictitious crack model (FCM) according to the axial-stress-crack-width curves of the rock-mortar interface is established, because the traditional nonlinear softening function easily distorts, shakes, and so cannot describe the damage-evolution process of the rock-mortar interface accurately. Through the use of a precise servo actuator system and three extensometers measured axial-stress-crack-width curves, it is shown that the rock-mortar interface is very sensitive to the strain rate. The tensile strength increases with strain rate, the crack width decreases at the same time, and the axial-stress-crack-width curves gradually evolve from a concave-downward trend to a linear decreasing trend. At the same time, the new constitutive relation function can reflect the tensile strength, crack width, and the downward trend of the rock-mortar interface more accurately. |
| format | Article |
| id | doaj-art-c50519d707934e3db3bdfa165f9a47ca |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-c50519d707934e3db3bdfa165f9a47ca2025-02-03T01:02:55ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/52418485241848Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain RatesNan Wu0Zhende Zhu1Zhilei He2Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, ChinaKey Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, ChinaKey Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, ChinaIn this paper, an experimental study was carried out on a rock-mortar interface specimen under three different strain rates (10−6, 10−5, and 10−4 s−1) using the MTS322 electrohydraulic servo loading system, and a new constitutive relation function of fictitious crack model (FCM) according to the axial-stress-crack-width curves of the rock-mortar interface is established, because the traditional nonlinear softening function easily distorts, shakes, and so cannot describe the damage-evolution process of the rock-mortar interface accurately. Through the use of a precise servo actuator system and three extensometers measured axial-stress-crack-width curves, it is shown that the rock-mortar interface is very sensitive to the strain rate. The tensile strength increases with strain rate, the crack width decreases at the same time, and the axial-stress-crack-width curves gradually evolve from a concave-downward trend to a linear decreasing trend. At the same time, the new constitutive relation function can reflect the tensile strength, crack width, and the downward trend of the rock-mortar interface more accurately.http://dx.doi.org/10.1155/2018/5241848 |
| spellingShingle | Nan Wu Zhende Zhu Zhilei He Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain Rates Advances in Materials Science and Engineering |
| title | Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain Rates |
| title_full | Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain Rates |
| title_fullStr | Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain Rates |
| title_full_unstemmed | Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain Rates |
| title_short | Experimental Study on the Tensile Properties of Rock-Mortar Interface under Different Strain Rates |
| title_sort | experimental study on the tensile properties of rock mortar interface under different strain rates |
| url | http://dx.doi.org/10.1155/2018/5241848 |
| work_keys_str_mv | AT nanwu experimentalstudyonthetensilepropertiesofrockmortarinterfaceunderdifferentstrainrates AT zhendezhu experimentalstudyonthetensilepropertiesofrockmortarinterfaceunderdifferentstrainrates AT zhileihe experimentalstudyonthetensilepropertiesofrockmortarinterfaceunderdifferentstrainrates |