钢筋混凝土保护层的重要性及控制 - 图文

目 录

目 录 ......................................................................................................................................... 1 摘要 ................................................................................................................................................. 1 ABSTRACT ......................................................................................................................................... 2 1.钢筋混凝土发展现状及工作机理 ............................................................................................. 3 1.1国外混凝土工程的发展概况 ............................................................................................... 3 1.2我国商品混凝土的发展概况 ............................................................................................... 3 1.3物质是基础 ........................................................................................................................... 4 1.3.1混凝土 .......................................................................................................................... 4 1.3.2配筋及增强材料 .......................................................................................................... 5 2.钢筋混凝土保护层的作用与要求 .............................................................................................. 8 2.1混凝土保护层的作用 ........................................................................................................... 8 2.2规范对混凝土保护层的要求 ............................................................................................... 9 3.钢筋混凝土保护层厚度偏厚或偏薄对构件的影响 ................................................................ 11 3.1混凝土保护层厚度偏厚的影响 ......................................................................................... 11 3.2混凝土保护层厚度偏薄的影响 ......................................................................................... 12 4.钢筋混凝土施工方法及混凝土保护层施工质量控制研究 .................................................... 15 4.1保护层质量偏差可能的原因 ............................................................................................. 15 4.1.1规范方面的原因 .......................................................................................................... 15 4.1.2设计方面的原因 .......................................................................................................... 15 4.1.3施工方面的原因 .......................................................................................................... 15 4.1.4有关建筑结构参考资料方面的原因 .......................................................................... 16 4.2施工控制保护层质量 ......................................................................................................... 16 4.2.1混凝土质量的控制 ...................................................................................................... 16 4.2.2施工操作上控制保护层质量 ...................................................................................... 19 5.钢筋混凝土保护层施工实践与应用 ........................................................................................ 21 5.1某实际工程保护层厚度检测状况及补救措施 ................................................................. 21 5.2控制保护层厚度一些措施建议 ......................................................................................... 23 5.3施工技术难点 ..................................................................................................................... 25

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6.总结与展望 ................................................................................................................................ 28 [参考文献] ................................................................................................................................... 29 致 谢 ....................................................................................................................................... 30 附录Ⅰ 英文翻译 ......................................................................................................................... 31 附录Ⅱ 英文原文 ......................................................................................................................... 38

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试论钢筋混凝土保护层的重要性及控制

[摘要] 混凝土保护层有着极为重要的地位，可以说在一般环境下解决钢筋锈蚀问题就是控制混

凝土保护层质量问题也就是解决了钢筋混凝土结构耐久性问题。所以规范上明确规定了钢筋保护层在相应混凝土等级和对应环境下钢筋保护层的最小值。然而保护层偏厚也并非好事，本文分别阐述了钢筋的混凝土保护层偏厚和偏薄对构件的影响，得出了要采用适当的保护层厚度的重要性。在此基础上分析了钢筋保护层厚度施工质量不高的原因，这是可能由多方面原因造成的，主要原因归结为施工方的责任。总结了施工上控制保护层厚度的技术难点及心态上不重视会给施工质量带来的影响，并结合质检站检测保护层厚度实例反应我国现在混凝土保护层施工质量存在一些问题，并提出一些相应的控制及补救措施。

[关键词] 钢筋混凝土保护层；偏薄；偏厚；锈蚀；质量控制；耐久性；承载力；垫块

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commenting on armoured concrete protective layer significance

and control

（School of Naval Architecture and Civil Engineering, Zhejiang Ocean University,

Zhoushan, Zhejiang 316004）

[Abstract] The concrete protective layer plays a significant role,we can say that the problem

resolving a reinforced bar under general environment rusting a problem being the mass controlling the concrete protective layer also be just the problem having resolved reinforced concrete structure durability. Therefore on the norm make minimum value issuing the reinforced bar protective layer in corresponding concrete grade and corresponding environment having stipulated the reinforced bar protective layer clear. But the protective layer insists to favor also not meddlesome, The concrete protective layer having set forth a reinforced bar respectively insists to favor with the effect insisting to despise pair of components the main body of a book, have reached the significance needing to adopt appropriate protective layer thickness. Have analyzed no high cause of reinforced bar protective layer thickness construction mass on the basis here, this is that many-sided possible reason cause brings about , main cause is summed up as the square responsibility being under construction. The technology having summed up construction upper under the control of protective layer thickness does not take effect that can give construction mass to bring about seriously on difficult point and psychology, inspects up corresponding controlling and remedial measure there existing some problems in station detecting protective layer thickness example reaction our country concrete now protective layer construction mass, and bringing forward some combining with and quality.

[Key Words] Armoured concrete protective layer；Insist to despise；Insist to favor；Get rusty；Mass

under the control of；Durability；Bear the weight of a force；Heel block.

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