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- W4387647510 abstract "Foam concrete contains many holes inside, which has the properties of light weight, shock absorption, energy absorption. It is a good energy absorption buffer material. However, it also has the disadvantages of large shrinkage and poor ductility. In this paper, based on the requirements of foam-fiber concrete for buffering and energy absorption in soft rock support, fiber materials were added to foam concrete, and six-factor three-level orthogonal test was carried out. Combined with the analytic hierarchy process, the optimal mix ratio of each component was determined, and a new type of foam-fiber concrete was prepared. The mechanical properties and deformation law of foam-fiber concrete were studied by indoor axial compression test, DIC digital speckle test, triaxial compression test and Brazilian splitting test. The test results show that the new foam-fiber concrete has good strength, tensile and energy absorption capacity. At the same time, in order to evaluate its energy absorption effect as a buffer layer, through comparative tests, the energy absorption and buffering effect of the new foam-fiber concrete in underground engineering is analyzed. The research results provide a good reference for the study of soft rock flexible support." @default.
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- W4387647510 date "2023-12-01" @default.
- W4387647510 modified "2023-10-15" @default.
- W4387647510 title "Study on mechanical properties of new supporting materials for soft rock underground engineering" @default.
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- W4387647510 doi "https://doi.org/10.1016/j.conbuildmat.2023.133631" @default.
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