既存建物のコンクリートの中性化深さを予測する予測式を得る方法、既存建物のコンクリートの中性化深さを予測する方法、及び既存建物の残余寿命の予測方法

Title:

Document Type and Number:

Japanese Patent JP7070901

Kind Code:

B2

Abstract:

To provide a new prediction formula capable of being applied to the neutralization depth of concrete in existing buildings, regardless of the type of finishing and whether it is finished.SOLUTION: Specific values of a, b, c, e and f constituting the following equation (1) are determined by applying the least-squares method between the actual measured values of the neutralization depth of concrete and the estimated value of the neutralization depth of concrete according to the following equation (1). The determined concrete values are substituted into the following expression (1) to obtain an expression (1') which is a relational expression between x and t, C, dand d. Here, x: depth of carbonation of concrete, t: age of concrete, C: COconcentration of air in the environment where concrete is placed, d: thickness of mortar on concrete, d: thickness of decorative building materials on concrete.SELECTED DRAWING: None

Inventors:

Daisuke Honma
Masao Kojima
Satoru Shishido
Kawai Taku
Nakane Kazuomi
Hidenori Tanaka
Kenichi Takeda
Hideo Okimura
Yoshihiro Masuda

Application Number:

JP2018134531A

Publication Date:

May 18, 2022

Filing Date:

July 17, 2018

Export Citation:

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Assignee:

TAKENAKA CORPORATION
Nomura Real Estate Development Co., Ltd.

International Classes:

G01N33/38; G01N17/00

Domestic Patent References:

JP2010032362A
JP2005049192A
JP2005049235A
JP2015094627A

Other References:

李榮蘭他,表層コンクリートの品質と中性化進行に関する解析的検討,日本建築学会構造系論文集,2010年03月,Vol.75,No.649,PP.499-504
李榮蘭他,既存コンクリート構造物における仕上塗材の透気係数と中性化抵抗に関する調査,セメント・コンクリート論文集,No.65,2011年,pp.346-353

Attorney, Agent or Firm:

Atsushi Nakajima
Kato Kazuho
Hiroshi Fukuda

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