TY - GEN
T1 - Comparative Model of the Physical-Mechanical Properties of Shotcrete with content of steel fibers and polypropylene used in the support of underground mining operations in Peru
AU - Aguirre-Braggiant, Hidalgo
AU - Martinez-Odalis, Chelin
AU - Pehovaz-Alvarez, Humberto
AU - Raymundo, Carlos
N1 - Publisher Copyright:
© 2021 Latin American and Caribbean Consortium of Engineering Institutions. All rights reserved.
PY - 2021
Y1 - 2021
N2 - In the underground mining of Peru, the most used support is shotcrete, due to its effectiveness against the stability of rocky massifs; however, it can present difficulties due to the natural aggressive agents of a mine, which results in a low support resistance. This research presents the study on the resistance of shotcrete when applying polypropylene fibers and steel fibers as reinforcing agent in an underground mine located in the province of Santander, Colombia. The reinforcement materials were chosen for their application in other countries, achieving improvements in the support capacity in underground workings. The application of Sika polypropylene fibers, in a curing time of 7, 14 and 28 days obtained results of 257.02kg/cm2, 293.58kg/cm2 and 342.25kg/cm2 respectively. On the other hand, the application of Dramix steel fibers, in a curing time of 7, 14 and 28 days, obtained results of 215.0kg/cm2, 301.42kg/cm2 and 346.05kg/cm2 respectively. In this sense, it is evident that shotcrete reinforced with both fibers is favorable for use in underground mining in work with the presence of water and a high presence of stress. However, for the effectiveness of this proposal, the scenario where it will be applied must be analyzed.
AB - In the underground mining of Peru, the most used support is shotcrete, due to its effectiveness against the stability of rocky massifs; however, it can present difficulties due to the natural aggressive agents of a mine, which results in a low support resistance. This research presents the study on the resistance of shotcrete when applying polypropylene fibers and steel fibers as reinforcing agent in an underground mine located in the province of Santander, Colombia. The reinforcement materials were chosen for their application in other countries, achieving improvements in the support capacity in underground workings. The application of Sika polypropylene fibers, in a curing time of 7, 14 and 28 days obtained results of 257.02kg/cm2, 293.58kg/cm2 and 342.25kg/cm2 respectively. On the other hand, the application of Dramix steel fibers, in a curing time of 7, 14 and 28 days, obtained results of 215.0kg/cm2, 301.42kg/cm2 and 346.05kg/cm2 respectively. In this sense, it is evident that shotcrete reinforced with both fibers is favorable for use in underground mining in work with the presence of water and a high presence of stress. However, for the effectiveness of this proposal, the scenario where it will be applied must be analyzed.
KW - Compressive strength
KW - Polypropylene fibers
KW - Shotcrete
KW - Steel fibers
UR - https://www.scopus.com/pages/publications/85121995717
U2 - 10.18687/LACCEI2021.1.1.583
DO - 10.18687/LACCEI2021.1.1.583
M3 - Contribución a la conferencia
AN - SCOPUS:85121995717
T3 - Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology
BT - 19th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology
A2 - Larrondo Petrie, Maria M.
A2 - Zapata Rivera, Luis Felipe
A2 - Aranzazu-Suescun, Catalina
PB - Latin American and Caribbean Consortium of Engineering Institutions
T2 - 19th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology: "Prospective and Trends in Technology and Skills for Sustainable Social Development" and "Leveraging Emerging Technologies to Construct the Future", LACCEI 2021
Y2 - 19 July 2021 through 23 July 2021
ER -