Research on Pressure Drop in the Accelerate Zone of Horizontal Conveying of Concrete Spraying
A pressure transmitter was installed at a specific position in a concrete conveying line to disclose the pressure drop when compressed air was conveyed during concrete spraying. A statistical analysis of the pressure at different positions was undertaken. Experimental results demonstrated that in th...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/7953434 |
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| _version_ | 1832552056157634560 |
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| author | Guanguo Ma Zhaoxia Liu Xiaobing Gong Lianjun Chen Guoming Liu Gang Pan Qizheng Dong |
| author_facet | Guanguo Ma Zhaoxia Liu Xiaobing Gong Lianjun Chen Guoming Liu Gang Pan Qizheng Dong |
| author_sort | Guanguo Ma |
| collection | DOAJ |
| description | A pressure transmitter was installed at a specific position in a concrete conveying line to disclose the pressure drop when compressed air was conveyed during concrete spraying. A statistical analysis of the pressure at different positions was undertaken. Experimental results demonstrated that in the accelerate zone of horizontal conveying of concrete in the line, the pressure drop mainly occurred during the acceleration, collision, and friction processes. The momentum equation was introduced during the experiment, which interpreted the pressure drop caused by the accelerated conveying of concrete. The theoretical equation was corrected based on the results of theoretical experiments by introducing the value of α, and the experimental results were then optimized, thus obtaining an approximate model of pressure drop during the conveying of concrete. In addition, experimental results were compared with a model equation that showed the reliability of the proposed model. Research conclusions are of great significance to regulate the pressure drop in the conveying line of concretes, to design working parameters of concrete spraying devices, and to predict the ultimate distance for the conveying of concrete. |
| format | Article |
| id | doaj-art-ef79db7fb85e414e99e196463f9215c8 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-ef79db7fb85e414e99e196463f9215c82025-02-03T05:59:41ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/79534347953434Research on Pressure Drop in the Accelerate Zone of Horizontal Conveying of Concrete SprayingGuanguo Ma0Zhaoxia Liu1Xiaobing Gong2Lianjun Chen3Guoming Liu4Gang Pan5Qizheng Dong6College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaChongqing Research Institute of China Coal Science and Industry Group, Chongqing 400016, ChinaCollege of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaA pressure transmitter was installed at a specific position in a concrete conveying line to disclose the pressure drop when compressed air was conveyed during concrete spraying. A statistical analysis of the pressure at different positions was undertaken. Experimental results demonstrated that in the accelerate zone of horizontal conveying of concrete in the line, the pressure drop mainly occurred during the acceleration, collision, and friction processes. The momentum equation was introduced during the experiment, which interpreted the pressure drop caused by the accelerated conveying of concrete. The theoretical equation was corrected based on the results of theoretical experiments by introducing the value of α, and the experimental results were then optimized, thus obtaining an approximate model of pressure drop during the conveying of concrete. In addition, experimental results were compared with a model equation that showed the reliability of the proposed model. Research conclusions are of great significance to regulate the pressure drop in the conveying line of concretes, to design working parameters of concrete spraying devices, and to predict the ultimate distance for the conveying of concrete.http://dx.doi.org/10.1155/2019/7953434 |
| spellingShingle | Guanguo Ma Zhaoxia Liu Xiaobing Gong Lianjun Chen Guoming Liu Gang Pan Qizheng Dong Research on Pressure Drop in the Accelerate Zone of Horizontal Conveying of Concrete Spraying Advances in Civil Engineering |
| title | Research on Pressure Drop in the Accelerate Zone of Horizontal Conveying of Concrete Spraying |
| title_full | Research on Pressure Drop in the Accelerate Zone of Horizontal Conveying of Concrete Spraying |
| title_fullStr | Research on Pressure Drop in the Accelerate Zone of Horizontal Conveying of Concrete Spraying |
| title_full_unstemmed | Research on Pressure Drop in the Accelerate Zone of Horizontal Conveying of Concrete Spraying |
| title_short | Research on Pressure Drop in the Accelerate Zone of Horizontal Conveying of Concrete Spraying |
| title_sort | research on pressure drop in the accelerate zone of horizontal conveying of concrete spraying |
| url | http://dx.doi.org/10.1155/2019/7953434 |
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