鉄骨住宅部材の解体による腐食性状の調査と考察 : 軽量鉄骨系工業化住宅の耐久性に関する研究その1

概要

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Based on the detailed investigasion on corrosion characteristics of light gage steels which are structural member of housing, classificastion by visual observation of external form of rust is suggested newly. External forms were possible to classified into 6 types i. E. froth like corrosion, oil film like corrosion, spite-hole like corrosion, film peeling like corrosion, chip-off peeling like corrosion, and layerd peeling like corrosion. Factors of corrosion for respective kind are possible to estimate through molecular constitutional ratio of rust which was obtained by X-ray diffraction analyses, and constitutional ratio of element of rust which were obtained by EDX analyses. In addition, reduction of thickness of steel by corrosion and extreme value of corrosion depth were found to enable the estimation of corrosion rate respectively. In the second place, data of dismantling investigation of 32 houses were analyzed statistically by 2 evaluation methods, namely degradation degree and classification of external form which are included in diagnostics for rusts on painted steels. As the results of analyses, common factors were ascertained and classification by external forms was found effective.
社団法人日本建築学会の論文
1990-09-30