Blast response of full-size concrete walls with chemically reactive enamel （CRE）-coated steel reinforcement

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Bibliographic Details
Published in浙江大学学报：A卷英文版 Vol. 17; no. 9; pp. 689 - 701
Main Author Dong-ming YAN Hua-wei YIN Cheng-lin WU Yan-long LI Jason BAIRD Gen-da CHEN
Format Journal Article
LanguageEnglish
Published 2016
Subjects
有限元模型
活性瓷釉涂层
爆炸荷载
破坏模式
粘结力
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Bibliography:33-1236/O4
Chemically reactive enamel （CRE） coating, Blast loading, Crack pattern, Bond strength, Finite element model
In this study, two full-size concrete wails were tested and analyzed to demonstrate the effectiveness of a chemically reactive enamel （CRE） coating in improving their mechanical behavior under blast loading： one with CRE-coated rebar and the other with uncoated rebar. Each wall was subjected in sequence to four explosive loads with equivalent 2, 4, 6-trinitrotoluene （TNT） charge weights of 1.82, 4.54, 13.6, and 20.4 kg. A finite element model of each wall under a close-in blast load was developed and validated with pressure and strain measurements, and used to predict rebar stresses and concrete surface sWain distributions of the wall. The test results and visual inspections consistently indicated that, compared with the barrier wall with uncoated reinforcement, the wall with CRE-coated rebar has fewer concrete cracks on the front and back faces, more effective stress transfers from concrete to steel rebar, and stronger connections with its concrete base. The concrete surface strain distributions predicted by the model under various loading conditions are in good agreement with the crack patterns observed during the tests.
ISSN:1673-565X
1862-1775