Blasting loads may cause severe damage to reinforced concrete(RC) structures.Adding basalt fiber(BF) into concrete is a means to improve the blast resistance of reinforced concrete members.Beam is a vital bearing and connecting member in a reinforced concrete structure.Improving the blast resistance performance of the beam can enhance the overall impact resistance of the frame.Three beams with different basalt fiber volume ratios(0%,0.1%,and 0.2%) were selected to investigate the anti-explosion performance of basalt fiber reinforced concrete(BFRC) beams under blasting loads.The accelerometers and strain gauges recorded test beams′ dynamic responses.Meanwhile,the embedded piezoelectric smart aggregates(PSA) were used to monitor the internal damage developments of the beams.The observations show that under the action of blasting loads,compared with ordinary RC beams,the peak strain and acceleration of the BFRC beam are lower.Correspondingly,there are less surface cracks of the beam and a smaller spalling area.Wavelet packet energy method is used to compute the indices for estimating the internal damages of the BFRC beams under different explosives and analyze the change of anti-explosion performance of the concrete beams with different basalt fiber volumes.The test results show that the basalt fiber can improve the anti-explosion performance of concrete beams,and the damage degree of beams decreases significantly when the basalt volume content is 0.2%.