Abstract
Uniaxial compressive stress-strain curves of several groups of basalt fiber crumb rubber mortars (BF-CRM) with different contents are tested. By comparing with the GZH model, the improved values of the parameters of the BF-CRM constitutive model based on the GZH model are obtained. Then, taking the supporting scheme of main substation of the mine as the background, using FLAC3D to simulate the roadway support, using BF-CRM to replace the ordinary mortars in the original support, and combining with the triaxial compression test of different confining pressure, the application effect of BF-CRM in roadways support is studied and analyzed.
Highlights
The addition of crumb rubber into engineering materials such as cement mortar improves the ductility, durability and impact resistance of cement mortar, and promotes the reuse of waste rubber[1,2]
The results showed that the workability of fresh mortar can be improved, the deformability of hardened mortar can be improved, and the early strength and frost resistance of hardened mortar can be improved by adding appropriate amount of rubber powder
Luigi Fenu[13] conducted static and dynamic tests to study the effects of glass fiber and basalt fiber on the tensile strength, flexural strength and energy absorption capacity of cement mortar respectively
Summary
The addition of crumb rubber into engineering materials such as cement mortar improves the ductility, durability and impact resistance of cement mortar, and promotes the reuse of waste rubber[1,2]. Long Guangcheng[8,9] studied the mechanical properties of cement concrete with waste rubber particles of different sizes. Li Weimin[12] studied the effect of basalt fibers on the dynamic mechanical properties of concrete under impact loading. Luigi Fenu[13] conducted static and dynamic tests to study the effects of glass fiber and basalt fiber on the tensile strength, flexural strength and energy absorption capacity of cement mortar respectively. Santarelli[14] studied the physical and mechanical properties and micro structures of three kinds of hydrated lime mortar with different compositions by basalt fibers. BF-CRM specimens with different basalt fiber content and rubber particle content were designed, and conducted the uniaxial compression tests. Based on the tunnel support scheme of a mine main substation, using FLAC3D and combined with BF-CRM triaxial compression tests under 5 MPa and 8 MPa confining pressure, the application effect of BF-CRM in high stress soft rock roadway support was studied and analyzed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
