Kajima Corporation

Noboru Sakata

Keiji Kondo

Kenzo Watanabe

Boon Keng Lim

Nobuo Sakurai

Shuji Yanai

Taizo Goda

Goro Sakai

Shusaku Hirata

Kosuke Yokozeki

Mitsunori Iwata

Yasuhiko Furusawa

Nobuyoshi Nanba

Tatsuya Nukushina

Kazunori Nishioka

Minori Machii

A method for manufacturing a concrete structure comprises an installation step of installing a formworkfor concrete placement, a placement step of performing concrete placement in a state where a curing sheetis attached to an inner surface of the formwork, and a demolding step of removing the formworkafter placement of concrete C. A contact angle of a contact surface of the curing sheetfor use in the placement step with water is 50 degrees or more, wherein the contact surface faces the concrete. Thus, generation of bleeding water is suppressed.

Method for manufacturing concrete structure, concrete curing sheet for curing concrete

Pasty solution 5 made by dissolving membrane-forming polymer 2 and plasticizer 3 in water 4 is applied to wall surface 1 in the form of liquid film 6. The plasticizer 3 improves flexibility and elongation of membrane formable by the membrane-forming polymer. Dirt substance 8 on the wall surface 1 is caused to adhere to the liquid film 6. Water 4 of the liquid film 6 is allowed to evaporate gradually so as to turn the liquid film 6 into flexible membrane 7 which is peelable intact. After dried, the flexible membrane 7 is peeled off intact from the wall surface 1 while carrying the dirt substance 8 adhering thereto.

Method for peeling off dirt from wall surface by using peelable polymer

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Tokyo, Japan

Noboru Sakata