<p>At high latitudes, ice, as a temporary infrastructural material, is often adversely affected by salt, which alters the strength and toughness of pure water ice. The incorporation of fibre materials is an effective method for increasing the strength and toughness of saline ice. To investigate the strengthening and toughening effectiveness and mechanisms of fibres on saline ice, Brazilian splitting and uniaxial compression (UC) tests were performed on ice samples with different salinities and fibre volume ratios at various loading rates. The UC experiments indicate that with decreasing fibre content, increasing salinity, or increasing loading rate, the failure mode of ice shifts from bulging to splitting, shear, and fracture crushing. The addition of fibres substantially increases the tensile and compressive strengths of saline ice and pure water ice. High fibre contents are more effective at resisting tension than compression, and a 3‒7% fibre content is recommended for engineering applications. As the salinity increases, the tensile and compressive strengths of the saline ice decrease. The tensile strength increases, whereas the compressive strength increases and then decreases with increasing loading rate. The tensile-compressive strength ratio is in the range of approximately 0.1 to 0.2 for fibre-reinforced saline ice and fibre-reinforced pure water ice (FRPI).</p>