MOISTURE ESTIMATION METHOD OF CONCRETE STRUCTURE AND MOISTURE ESTIMATION SYSTEM OF CONCRETE STRUCTURE

PROBLEM TO BE SOLVED: To estimate a distribution of moisture in a concrete structure which is an estimation object.SOLUTION: When a neutron emitted from a neutron beam source 104 with a content of the chemical element density composition of the concrete and bound water as a condition based on a rela...

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Bibliographic Details
Main Authors NISHIMURA KAZUYA, ASAMI MITSUFUMI
Format Patent
LanguageEnglish
Japanese
Published 12.01.2017
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Summary:PROBLEM TO BE SOLVED: To estimate a distribution of moisture in a concrete structure which is an estimation object.SOLUTION: When a neutron emitted from a neutron beam source 104 with a content of the chemical element density composition of the concrete and bound water as a condition based on a relation between the position of a neutron beam source 104 and the position of a neutron beam detector 106 is measured in the neutron detector 106 via a concrete structure 200, the response is modeled and analyzed by a radiation transportation calculation code including the Monte Carlo method and the SN method, and when the neutron emitted from the neutron beam source 104 is measured in the neutron detector 106 via the concrete structure 200, the response is actually measured, and the existence of the moisture in the concrete structure 200 is estimated using the actually measured response and the analyzed response.SELECTED DRAWING: Figure 1 【課題】評価対象であるコンクリート構造物内の水分の分布を推定する。【解決手段】コンクリートの元素密度組成及び結合水の含有量を条件として、中性子線源104の位置と中性子検出器106の位置との関係に基づいて中性子線源104から放射された中性子がコンクリート構造物200を介して中性子検出器106において計測されるときの応答をモデル化してモンテカルロ法及びSN法を含む放射線輸送計算コードにより解析し、中性子線源104から放射された中性子がコンクリート構造物200を介して中性子検出器106において計測されるときの応答を実測し、実測された応答と解析された応答とを用いてコンクリート構造物200内の水分の存在を推定する。【選択図】図1
Bibliography:Application Number: JP20150123727