Experimental Investigation on the Mechanical Properties of Self-Compacting Concrete under Uniaxial and Triaxial Stress
To explore the influence of fly ash (FA) and silica fume (SF) on the mechanical properties of self-compacting concrete (SCC) under uniaxial and triaxial, the compressive strength test, splitting strength test, ultrasonic testing test, and triaxial test were performed in this paper. The results show...
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MDPI AG
2020-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/8/1830 |
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| author | Hongbo Li Jianguang Yin Pengfei Yan Hao Sun Qingqing Wan |
| author_facet | Hongbo Li Jianguang Yin Pengfei Yan Hao Sun Qingqing Wan |
| author_sort | Hongbo Li |
| collection | DOAJ |
| description | To explore the influence of fly ash (FA) and silica fume (SF) on the mechanical properties of self-compacting concrete (SCC) under uniaxial and triaxial, the compressive strength test, splitting strength test, ultrasonic testing test, and triaxial test were performed in this paper. The results show that the 3 days compressive strength and splitting strength of SCC decreased with the increase of FA substitution rate. The 28 days, 56 days, and 91 days compressive strength and splitting strength of SCC increased first and then decreased with the increase of FA substitution rate. The peak stress and peak strain of SCC gradually increased with the increase of confining pressure. The peak stress and strain of SCC increased first and then decreased with the increase of FA substitution rate. Moreover, the relationship models between compressive strength and splitting strength, between compressive strength and amplitude, between peak stress, peak strain and confining pressure under different FA substitution rates were proposed. As a conclusion, the addition of SF can increase the strength of SCC obviously. Under uniaxial stress, SCC failure mode is splitting failure, under triaxial stress, SCC failure mode is shear failure. Based on the Mohr-Coulomb strength theory, the failure criterion of SCC with FA and SF was discussed. |
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| format | Article |
| id | doaj.art-bfd85cf3ed7045fa8fedef4b207f4248 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T20:30:21Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-bfd85cf3ed7045fa8fedef4b207f42482023-11-19T21:28:27ZengMDPI AGMaterials1996-19442020-04-01138183010.3390/ma13081830Experimental Investigation on the Mechanical Properties of Self-Compacting Concrete under Uniaxial and Triaxial StressHongbo Li0Jianguang Yin1Pengfei Yan2Hao Sun3Qingqing Wan4College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaTo explore the influence of fly ash (FA) and silica fume (SF) on the mechanical properties of self-compacting concrete (SCC) under uniaxial and triaxial, the compressive strength test, splitting strength test, ultrasonic testing test, and triaxial test were performed in this paper. The results show that the 3 days compressive strength and splitting strength of SCC decreased with the increase of FA substitution rate. The 28 days, 56 days, and 91 days compressive strength and splitting strength of SCC increased first and then decreased with the increase of FA substitution rate. The peak stress and peak strain of SCC gradually increased with the increase of confining pressure. The peak stress and strain of SCC increased first and then decreased with the increase of FA substitution rate. Moreover, the relationship models between compressive strength and splitting strength, between compressive strength and amplitude, between peak stress, peak strain and confining pressure under different FA substitution rates were proposed. As a conclusion, the addition of SF can increase the strength of SCC obviously. Under uniaxial stress, SCC failure mode is splitting failure, under triaxial stress, SCC failure mode is shear failure. Based on the Mohr-Coulomb strength theory, the failure criterion of SCC with FA and SF was discussed.https://www.mdpi.com/1996-1944/13/8/1830self-compacting concretefly ashmechanical propertiestriaxial testfailure criterion |
| spellingShingle | Hongbo Li Jianguang Yin Pengfei Yan Hao Sun Qingqing Wan Experimental Investigation on the Mechanical Properties of Self-Compacting Concrete under Uniaxial and Triaxial Stress Materials self-compacting concrete fly ash mechanical properties triaxial test failure criterion |
| title | Experimental Investigation on the Mechanical Properties of Self-Compacting Concrete under Uniaxial and Triaxial Stress |
| title_full | Experimental Investigation on the Mechanical Properties of Self-Compacting Concrete under Uniaxial and Triaxial Stress |
| title_fullStr | Experimental Investigation on the Mechanical Properties of Self-Compacting Concrete under Uniaxial and Triaxial Stress |
| title_full_unstemmed | Experimental Investigation on the Mechanical Properties of Self-Compacting Concrete under Uniaxial and Triaxial Stress |
| title_short | Experimental Investigation on the Mechanical Properties of Self-Compacting Concrete under Uniaxial and Triaxial Stress |
| title_sort | experimental investigation on the mechanical properties of self compacting concrete under uniaxial and triaxial stress |
| topic | self-compacting concrete fly ash mechanical properties triaxial test failure criterion |
| url | https://www.mdpi.com/1996-1944/13/8/1830 |
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