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    • 8. 发明专利
    • METHOD AND APPARATUS FOR TESTING SURFACE DETERIORATION OF CEMENTITIOUS CURED OBJECT BY ACIDIC WATER
    • JPH11258148A
    • 1999-09-24
    • JP5761598
    • 1998-03-10
    • TAKENAKA KOMUTEN COTAKENAKA DOBOKU
    • IKEO YOSAKUYONEZAWA TOSHIOMITSUI TATEOOGAWA NOBUTAKA
    • G01N17/00G01N33/38
    • PROBLEM TO BE SOLVED: To obtain a deterioration test means imitating a natural state in consideration of the physical force due to the acidity properties possessed by acidic water in a cementitious cured object such as concrete or the like and the movement of water. SOLUTION: A constant quantity per a time of acidic water 4 is sprinkled over the surface of a cementitious cured object comprising concrete, mortar or paste and the surface of the product applied to the surface of the cured object through a spray nozzle 5 so as to imitate a mode such that rain pours on a wall surface or applied to the surface of the product allowed to approach a vertical posture, after concentrated thereto through a concentrating plate 7 so as to imitate such a mode that rain is conc. along the surface of a roof to flow along the wall surface. Further, a process concentrating this water sprinkling through the concentrating plate 7 so as to imitate such a mode that conc. rain is applied to a floor locally in a waterfall state to apply the same to the surface of the product allowed to approach a horizontal posture under the setting of a predetermined falling height is repeatedly applied at a definite drying time interval and, thereafter, a change in the surface color of the product and a change in the surface roughness thereof are measured to evaluate the resistance against acidic water of the surface of the cement cured object.