Investigation of the variations in nonslip effects of a fluorine-based liquid antislip agent due to long-term wear from walking

•Surfaces similar to 'As-Is', slip resistance coefficient decreases to 40,000 steps.•Shoes and tap water conditions, liquid antislip agent lasted 10,000–18,000 steps.•Barefoot and tap water, liquid antislip agent lasted approximately 10,000 steps.•The effectiveness of the agent unlikely for soil water suspension and body wash. The purpose of this study was to verify the time-dependent changes in the nonslip effects of a fluorine-based liquid antislip agent applied to inorganic flooring materials. Based on the coefficient of slip resistance for shoes (CSR), the nonslip effects continued until 10,000–18,000 steps after applying the antislip agent in the Wet-1 condition. The nonslip effects were insignificant in the Wet-2 condition similar to the 'As-Is'. All specimens exhibited the nonslip effect until approximately 10,000 steps according to the coefficient of slip resistance for barefoot (CSR-B) in the Wet-1 condition. No nonslip effect was observed in the Wet-3 condition with body wash.