Abstract: Abstract：The resistance to sulfate attack of the shrinkage-compensating steel fiber reinforced shotcrete with mine under different erosion age were studied in this paper. The results showed that the dosage 8% of expansive agent and 1.2% of steel fiber volume were best. Erosion in the sulfate solution 100d, the compressive strength and tensile strength were increased by 36.2%, 4.52% relative to the reference concrete without erosion; the compressive strength and tensile strength of erosion 200d decreased by 2.16%, 2.08% relative to 100d erosion. In the early erosion period, SO42- in erosion solution not only didn’t reduce the concrete strength, but also greatly increased its strength, the strength was relatively decline while erosion 200d with a modest rate, SO42- could effectively slow down the decline in strength to some extent.

Key words: Keywords: sulfate attack, shrinkage-compensating steel fiber reinforced shotcrete with mine, compressive strength, tensile strength