Mudstone floor of coal mine may become softer and weaker due to argillization,especially to be exposed to a very humid working environment for just several days.In order to stabilize slaking mudstone efficiently instead of removing it,a new type of solidifying-agent was(developed).To identify the mechanical properties of stabilized slaking mudstone and possibility as base material of roadway floor,a series of experiments were carried out on specimens prepared at different dosages of solidifying-agent and curing time.The test results show that the 3 d unconfined compressive strength of stabilized slaking mudstone with 15.0%(by mass) dosage of solidi(fying)-agent can get 85% of 28 d unconfined compressive strength.The analytical results show that it is possible for stabilized slaking mudstone to be used as base material.And,the treatment avoids the environmental pollution created by disposal method of slaking mudstone.Through(analyzing) the test results,it is concluded that the minimum solidifying-agent dosage is an age-(related) factor.The minimum solidifying-agent dosage relating to curing time reduces linearly with solidification coefficient and reduces with curing time by following a logarithmic function.