PURPOSE: To improve various kinds of curing methods and to obtain the adequate hygrometer by forming a prescribed durable and hardly water absorptive glossy surface on an exposed surface or the surface in contact with a form.
CONSTITUTION: The uncured hydraulic material or hydrous curing hydraulic material is cured by the curing method of (a) curing at an artificial low evaporation rate, (b) curing by gradually lowering the pressure, then restoring the pressure or (c) gradually restoring the pressure after pressurizing in air or CO2 atmosphere. The hydraulic material formed with the durable and hardly water absorptive glossy surface essentially consisting of the dense calcium carbonate compd. without having the efflorescent component remaining on the exposed surface or the surface in contact with the form is produced by the curing. The hygrometer is produced by mounting an electrical exothermic material to a humidity sensor for the high-humidity heating type curing chamber for the hydraulic material at needs and removing the condensed water by causing the exothermic material to generate heat intermittently.
MITSUO MITSUKO
MITSUO HIROSHI
MITSUO MITSUKO
MITSUO HIROSHI
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