Construction method for sealing slurry at bottom of PC component

The invention discloses a construction method for sealing slurry at the bottom of a PC component. The construction method comprises the steps that a grouting device and a slurry sealing closing-up sliding block are prepared on a construction site for standby application; after the PC component and the bottom component are spliced and fixed, a grouting device is arranged at the gap, and the second end of the grouting device abuts against the gap; an operator holds a handle, a slurry groove is fully paved with slurry, then a fixing plate is pulled out from a vertical clamping groove of a side plate, and the slurry is pushed into a gap; one side of the slurry sliding groove of the slurry sealing and closing-up sliding block abuts against the gap, the slurry sealing and closing-up sliding block is pushed in the length direction of the gap, slurry at the end opening of the gap is squeezed into the gap in the slurry sliding groove, the slurry is dense, and a smooth edge closing notch is formed in the surface of the slurry through the closing-up structure. According to the method, the grouting amount per unit length can be kept consistent through the grouting device, and the compactness of the sealing slurry is improved; the slurry sealing and closing-in sliding block can control slurry to be smoothly squeezed into the groove, and a flat closing-in opening is formed in the outer side. The method can improve the construction quality and efficiency.