Application of steel fiber-reinforced concrete for slab lagging at underground mines in Quang Ninh
Cơ quan:
1 Hanoi University of Mining and Geology, Hanoi, Vietnam
2 Mien Tay Construction University, Vinh Long, Vietnam
3 Joint-Stock Investment and Construction Company No.34, Hanoi, Vietnam
- *Tác giả liên hệ:This email address is being protected from spambots. You need JavaScript enabled to view it.
- Từ khóa: Casing, High-intensity concrete, Plates, Reinforced concrete, SFRC.
- Nhận bài: 24-09-2021
- Sửa xong: 09-01-2022
- Chấp nhận: 11-02-2022
- Ngày đăng: 31-07-2022
- Lĩnh vực: Kỹ thuật Xây dựng
Tóm tắt:
Steel Fiber-Reinforced Concrete (SFRC) is an advanced material studied and used in some developed countries in the world in recent years. The characteristics of this concrete are intensive compression, high tensile and tolerance strength, higher repeated loads, and long-term durable stability. Steel fibers were used to manufacture SFRC because of their outstanding characteristics. The durability of SFRC should be improved and the disadvantages of traditional concrete should be reduced. To produce inserts in the support structure, SFRC must be applied. Because 60÷70% of tunnels are being constructed for underground coal mines of Vietnam National Coal and Mineral Group (TKV) currently use. SPV steel frame support in combination with reinforced concrete inserts steel. To increase the plaque's capacity and durability in the future, a study must be done to create new, very intense concrete materials. This study investigated how the ratio and compressive strength of steel fibers affected the flexural characteristics of SRFC. To achieve this, 30 MPa strength SFRC with 0.5%, 1.0%, and 1.5% fiber fractions were made and evaluated. This study’s experimental results can be summarized as follows: according to the compression experimental results, the compressive strength and elastic modulus of SFRC were not considerably impacted by the steel fiber volume ratio; The experimental results from the bending tests show that for concrete with a strength of 30 MPa, the proportion of steel fibers of 1.0% has higher flexural strength and toughness than the proportion of steel fibers of 0.5% and 1.5%; A comparison of the test at 28 days of age with the (ACI 211.1-91, 1991) was completely satisfied.
ACI 211.1-91, (1991). Standard Practice for Selecting Proportions for Normal, Heavyweight and Mass Concrete.
ACI 544.4R-88, (1988). Design Considerations for Steel Fiber Reinforced Concrete. ACI.
Ali, B., Kurda, R., Herki, B., Alyousef, R., Mustafa, R., Mohammed, A., Raza, A., Ahmed, H. and Fayyaz Ul-Haq, M., (2020). Effect of Varying Steel Fiber
Content on Strength and Permeability Characteristics of High Strength Concrete with Micro Silica. Materials (Basel), 13(24). doi:10.3390/ma13245739.
Areef, D. M., Rao, P. S., Reddy, V. S. and Zubair, D. M. A., (2020). Flexural behaviour of steel fibre reinforced concrete beams made with copper slag as partial fine aggregate replacement. E3S Web of Conferences, 184. doi:10.1051/ e3sconf/202018401077.
Cao, S., Xue, G. and Yilmaz, E., (2019). Flexural Behavior of Fiber Reinforced Cemented Tailings Backfill Under Three-Point Bending. IEEE Access, 7, 139317-139328. doi:10.1109/ access.2019.2943479.
Dang, K. V., Truong, H. V. and Pham, A. T., (2020). Experimental study on use fly ash in underground construction concrete. Journal of Mining and Earth Sciences, 61(3), 60-67. doi:10.46326/jmes.2020.61(3).07.
Ganesan, N., Indira, P. V. and Santhakumar, A., (2013). Engineering properties of steel fibre reinforced geopolymer concrete. Advances in concrete construction, 1(4), 305-318. doi:10. 12989/acc2013.1.4.305.
Ganesan, N., Indira, P. V. and Seena, P., (2014). High performance fibre reinforced cement concrete slender structural walls. Advances in concrete construction, 2(4), 309-324. doi:10. 12989/acc.2014.2.4.309.
https://www.controls-group.com, (2015). Testing systems for determining the mechanical properties of concrete and cement-Compression and Flexural testing machines.
Jain, K. and Singh, B., (2013). Steel fibres as minimum shear reinforcement in reinforced concrete beams. Magazine of Concrete Research, 65(7), 430-440. doi:10.1680/macr. 12.00113.
Köksal, F., Altun, F., Yiğit, İ. and Şahin, Y., (2008). Combined effect of silica fume and steel fiber on the mechanical properties of high strength concretes. Construction and Building Materials, 22(8), 1874-1880. doi:10.1016/j.conbuildmat. 2007.04.017.
Shah, A. A. and Ribakov, Y., (2011). Recent trends in steel fibered high-strength concrete. Materials and Design, 32(8-9), 4122-4151. doi:10.1016/j.matdes.2011.03.030.
Shaikh, F. U. A. and Taweel, M., (2015). Compressive strength and failure behaviour of fibre reinforced concrete at elevated temperatures. Advances in concrete construction, 3(4), 283-293. doi:10.12989/acc. 2015.3.4.283.
TCVN 12393:2018., (2018). Fiber-Reinforced Concrete - Specification and test methods, (in Vietnamese).
Uygunoğlu, T., (2008). Investigation of microstructure and flexural behavior of steel-fiber reinforced concrete. Materials and Structures, 41(8), 1441-1449. doi:10.1617/ s11527-007-9341-y
Các bài báo khác
Toà soạn Tạp chí Khoa học kỹ thuật Mỏ - Địa chất
Phòng Xuất Bản - Trường Đại học Mỏ - Địa chất
Số 18 Phố Viên, P. Đức Thắng, Q. Bắc Từ Liêm, Hà Nội
Tel: (+84-24) 3219 1509 Fax: (+84-24) 3838 9633 
Email: tapchi@humg.edu.vn