高強度コンクリート - Hiroshima University

Title:

高強度コンクリート

Document Type and Number:

Japanese Patent JP5126835

Kind Code:

B2

Abstract:

To provide concrete having high compressive strength, while preventing the occurrence of the autogeneous shrinkage of concrete and the crack caused thereby.

The high-strength concrete is prepared by using a waste tile which is a porous ceramic as an aggregate, while setting the water-cement ratio during kneading to 15-40%, wherein the resulting high-strength concrete has a compressive strength at a material age of 28 days of 60 N/mm2or more, preferably 70 N/mm2or more. The aggregate comprises the waste tile in an amount of 10 to 40% of the total volume of the aggregate. In this case, it is preferred to use an expansive additive and/or a shrinkage-reducing agent.

Inventors:

Ryoichi Sato
Nakagawa Nobuya
Masahiro Suzuki
Maruyama Ippei

Application Number:

JP2008081739A

Publication Date:

January 23, 2013

Filing Date:

March 26, 2008

Export Citation:

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Assignee:

Hiroshima University
China High Pressure Concrete Industry Co., Ltd.
PS Mitsubishi Corporation

International Classes:

C04B28/02; C04B14/36; C04B18/16; C04B22/06; C04B24/02

Domestic Patent References:

JP61205654A
JP7126058A
JP4119957A

Other References:

飛田浩孝他,瓦廃材のコンクリート用骨材への適用性に関する研究,コンクリート工学年次論文集,日本,日本コンクリート工学協会,2006年,vol.28 No.1,1577-1582頁
友竹博一他,廃瓦再生骨材を使用したコンクリート製品の諸性質,コンクリート工学年次論文集,日本,日本コンクリート工学協会,2003年,vol.25 No.1,1355-1360頁

Attorney, Agent or Firm:

Maeda patent office
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura

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