Test method applicable to low-strength plastic concrete relative permeability coefficient

The invention provides a test method applicable to a low-strength plastic concrete relative permeability coefficient. The method comprises the steps of respectively fabricating six plastic concrete anti-permeability test pieces and three water absorption rate test pieces by same plastic concrete; testing and calculating plastic concrete water absorption rate a of the water absorption rate test piece by a water absorption rate test device; sleeving the six plastic concrete anti-permeability test pieces with rubber die sleeves, placing the six plastic concrete anti-permeability test pieces in opened test dies for sealing, and installing in an anti-permeability device; applying pressure to 0.3-0.6MPa in one time, performing constant pressure maintenance for 24 hours under the pressure, and calculating plastic concrete permeability height Dm; and calculating a relative permeability coefficient of each plastic concrete anti-permeability test piece, and taking an average value of the six test pieces, thereby obtain