Powder Technology, Vol.344, 937-946, 2019
Design and construction application of concrete canvas for slope protection
Concrete canvas (CC) has the potential to become a widely used slope protection material owing to advantages such as flexibility, fast construction with low labor costs, and quick strength development. This article studies the mechanical properties and stability of CC slope protection by comparing it with conventional material (shotcrete). The compressive strength development and tensile strength of CC are first tested. To further improve the tensile strength of CC, an Aramid fiber reinforced sheet (called AFRP) is glued to the surface of CC. The tensile and shear behaviors of FRP-reinforced CC are investigated as well. Then, a finite element model is used to simulate the stability of the slope of CC (FRP-reinforced CC) and shotcrete with different curing times and the stability of CC slope protection under heavy rainfall. The results indicate that FRP-reinforced CC can satisfy the design requirements of slope protection when the height of the slope is below 10 m. Compare with traditional cementitious material (e.g., shotcrete), CC provides a more suitable solution for the rapid and abominable (e.g., heavy rainfall) construction of slope protection. (C) 2018 Elsevier B.V. All rights reserved.