Kajima Corporation

Shuji Yanai

Keiji Kondo

Kenzo Watanabe

Tomoaki Honda

Noboru Sakata

Shinichi Yamanobe

Mitsunori Iwata

Taizo Goda

Shusaku Hirata

Toshimichi Ichinomiya

Shinichi Yoshimura

Yuki Yokota

Ryo Mizutani

Kosuke Yokozeki

Kosuke Furuichi

Kazunori Nishioka

Tomoyoshi Yoshiwara

Tatsuya Nukushina

Masanori Matsuura

Yuji Watanabe

Kazumasa Okubo

Goro Sakai

In an LNG tank, a dike is formed by arranging precast blocks in the circumferential direction and layering the precast blocks in the vertical direction. Each of the precast blocks has loop joints on the top, bottom, left, and right side faces, and concrete is deposited between each two precast blocks adjacent in the circumferential direction and the vertical direction, whereby masonry joints are formed in the vertical direction and the circumferential direction. Prestress is imparted to the dike by PC steel members. The PC steel members are provided in the circumferential direction and the vertical direction of the dike, and are arranged so as to avoid the masonry joints in the circumferential direction and the vertical direction. Therefore, it is possible to construct the dike in a short time, and it is possible to provide a tank or the like that can reduce the construction period.

Tank and method for constructing dike

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

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Tama, Japan

Shuji Yanai