Title

膠化瀝青塗層對鋼筋混凝土梁之防蝕效益探討

Translated Titles

A Study of Rubberized Asphalt Coating on the Steel Bar to Provent Corrosion of Reinforced Concrete Beam

DOI

10.6376/JCCE.200506.0261

Authors

鄭棟元(Teng-Yuan Tseng)

Key Words

膠化瀝青塗層 ; 反覆載重 ; 緻密配比法 ; 腐蝕 ; Rubberized asphalt coating ; Repeated loading ; Densified mixture design algorithm ; Coating ; Corrosion

PublicationName

防蝕工程

Volume or Term/Year and Month of Publication

19卷2期(2005 / 06 / 01)

Page #

261 - 274

Content Language

繁體中文

Chinese Abstract

This study is mainly to investigate the effect of rubberized asphalt coating on the corrosion prevention of steel embedded in ordinary Portland cement concrete beam. The parameters are whether the steel bar coated with rubberized asphalt or not, as well as the corrosion behavior of steel embedded in concrete beam under static and repeated loading. The concrete beam is designed according to ACI 318-89 code with the requirement of w/c ratio less than 0.4 and fc>5000 psi , and by densified mixture design algorithm (DMDA). The test results indicate that before concrete crack, the concrete cover provide excellent protection effect to prevent the steel from corrosion. However, after beam cracked, the concrete protection layer no longer provides protection for steel, and it is corroded immediately. In such case, the rubberized asphalt coating then takes turn to prevent the steel from corrosion.

English Abstract

This study is mainly to investigate the effect of rubberized asphalt coating on the corrosion prevention of steel embedded in ordinary Portland cement concrete beam. The parameters are whether the steel bar coated with rubberized asphalt or not, as well as the corrosion behavior of steel embedded in concrete beam under static and repeated loading. The concrete beam is designed according to ACI 318-89 code with the requirement of w/c ratio less than 0.4 and fc>5000 psi , and by densified mixture design algorithm (DMDA). The test results indicate that before concrete crack, the concrete cover provide excellent protection effect to prevent the steel from corrosion. However, after beam cracked, the concrete protection layer no longer provides protection for steel, and it is corroded immediately. In such case, the rubberized asphalt coating then takes turn to prevent the steel from corrosion.

Topic Category 工程學 > 工程學總論
工程學 > 土木與建築工程