【正文】 1 目 錄 目 錄 ........................................................................................................................ 1 摘要 ............................................................................................................................... 1 ABSTRACT ........................................................................................................................ 2 ................................................................................. 3 國外混凝土工程的發(fā)展概況 ................................................................................... 3 我國商品混凝土的發(fā)展概況 ................................................................................... 3 物質(zhì)是基礎 ........................................................................................................... 4 ........................................................................................................... 4 ............................................................................................. 5 的作用與要求 .................................................................................. 8 混凝土保護層的作用 ............................................................................................. 8 規(guī)范對混凝土保護層的要求 ................................................................................... 9 響 ......................................................... 11 混凝土保護層厚度偏厚的影響 .............................................................................. 11 混凝土保護層厚度偏薄的影響 ..............................................................................12 工質(zhì)量控制研究 ..............................................15 保護層質(zhì)量偏差可能的原因 ..................................................................................15 規(guī)范方面的原因 .............................................................................................15 設計方面的原因 .............................................................................................15 施工方面的原因 .............................................................................................15 有關建筑結構參考資料方面的原因 .................................................................16 施工控制保護層質(zhì)量 ............................................................................................16 混凝土質(zhì)量的控制 ..........................................................................................16 施工操作上控制保護層質(zhì)量 ............................................................................19 ..............................................................................21 某實際工程保護層厚度檢測狀況及補救措施 .........................................................21 控制保護層厚度一些措施建議 ..............................................................................23 施工技術難點 .......................................................................................................25 2 .................................................................................................................28 [參考文獻 ] ...................................................................................................................29 致 謝 .......................................................................................................................30 附錄Ⅰ 英文翻譯 ...........................................................................................................31 附錄Ⅱ 英文原文 ...........................................................................................................38 1 試論鋼筋混凝土保護層的重要性及控制 [摘要 ] 混凝土保護層有著極為重要的地位，可以說在一般環(huán)境下解決鋼筋銹蝕問題就是控制混凝土保護層質(zhì)量問題也就是解決了鋼筋混凝土結構耐久性問題。所以規(guī)范上明確規(guī)定了鋼筋保護層在相應混凝土等級和對應環(huán)境下鋼筋保護層 的最小值。然而保護層偏厚也并非好事，本文分別闡述了鋼筋的混凝土保護層偏厚和偏薄對構件的影響，得出了要采用適當?shù)谋Ｗo層厚度的重要性。在此基礎上分析了鋼筋保護層厚度施工質(zhì)量不高的原因，這是可能由多方面原因造成的，主要原因歸結為施工方的責任。總結了施工上控制保護層厚度的技術難點及心態(tài)上不重視會給施工質(zhì)量帶來的影響，并結合質(zhì)檢站檢測保護層厚度實例反應我國現(xiàn)在混凝土保護層施工質(zhì)量存在一些問題，并提出一些相應的控制及補救措施。 [關鍵詞 ] 鋼筋混凝土保護層；偏薄；偏厚；銹蝕；質(zhì)量控制；耐久性；承載力；墊塊 2 menting 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 ponents 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 manysided 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 bining 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. 3