PROBLEM TO BE SOLVED: To provide a silicate-based chemical fluid for stabilizing soil properties having a high dissolution rate of a hardener in water even in construction at low temperatures and capable of providing a prescribed gel time even if the ratio of the amount of the hardener to an alkali silicate is smaller than a conventional value, affording a uniform hardened product, well exhibiting the strength of the formed hardened product in any cases of medium setting, long setting and flash setting types and surely and efficiently stabilizing the ground and a method for stabilizing the soil properties. SOLUTION: This silicate-based chemical fluid for stabilizing the soil properties comprises the hardener containing an ammonium salt of a mineral acid in an amount of 0.013-1 pt. mass based on 100 pts. mass of sulfamic acid and a water-soluble polyvalent metal salt in an amount of 5-30 pts. mass based on 100 pts. mass of the sulfamic acid. The chemical fluid is obtained by compounding the hardener so as to provide 10-135 molar ratio (SiO2/water- soluble polyvalent metal salt) of the water-soluble polyvalent metal salt based on an SiO2component of a principal agent liquid. The method for stabilizing the soil properties comprises using the chemical fluid. COPYRIGHT: (C)2003,JPO
