【正文】 l not be addressed here. Research has substantially improved our knowledge of cementitious materials, the fundamentals of concrete deterioration from carbonationinduced corrosion, chlorideinduced corrosion, sulphate attack, alkali–aggregate reaction, frost, etc. However, in view of the serious and 7 insidious nature of the corrosion of steel in concrete repair and repair failures, it is surprising that progress in the repair industry has been so slow, which is probably attributable to some bination of the following: the exterior and interior environments and their interaction. problems does not exist. The mechanism of passivation and corrosion of steel in a plex repair environment is poorly understood. The whole area concerning “additional protection” of reinforcement in repair is currently highly speculative. is an extremely plex phenomenon involving environmental, metallurgical, interfacial, and continuum considerations. Most of the research in this area is being done by the civil engineering departments of universities where few workers have adequate knowledge of the subject. in support of research leading to a resolution to problems. Real progress cannot be made on the basis of graduate students working for limited periods. It is necessary to initiate programs which include a balanced practical approach and are adequately funded. by using high performance materials, corrosion inhibitors, protective coatings, etc., or belt and suspender systems. This caused many workers in the field to ignore the basics in the technology of concrete and other cementbased materials. ficant knowledge to design durable repairs already exists in a relatively “quite refined state”, as stated by Mather [1]. But the manner in which this knowledge is used is primitive. Several research studies in the repair field have been concerned with the improvement of properties of repair materials and their dimensional behaviour relative to the existing substrate. But these activities will lead to improvements in repair durability only if the issues of electrochemical patibility are also addressed. Removal of deteriorated concrete and its replacement with a repair material, even the best one, may result in accelerated rebar corrosion due to macrocell formation. The subject of this paper is also devoted to several confusing issues and attempts to establish the facts concerning the protection of reinforcement from premature corrosion in concrete repair, particularly that offered by corrosion inhibitors. How can we expect repaired concrete structures to be durable if the testing 8 methods, design and specification of corrosion protection methods, are relying on an inadequate assumption that electrochemistry in a repair system is similar to that occurring in new construction? There are significant differences between new construction and repair jobs。48(3):154–62. [10] Ramachandran VS, editor. Properties, science and admixtures handbook. Noyes Publication。富蘭克林說過， 做永遠比說好 ！ 5 Abstract In recent times in many parts of the world, reinforcement corrosion has bee the main factor in early, premature deterioration, and sometimes failure, of concrete structures. One of the major factors contributing to this deterioration process is the environmental and climatic conditions to which a concrete structure is exposed. When the severity of environment is pounded with poor quality concrete and/or defective design and construction practices, the process of deterioration bees interactive, cumulative and very rapid, and a cancerous growth that cannot be easily stopped. The poor durability performance of many concrete structures is causing disruption and expenditure on remedial works which owners and society cannot afford and do not wish to see repeated. A glimpse of reinforcement corrosion and some of the protection options is presented in this paper. The effect of corrosion inhibiting admixtures in concrete and concrete repair is discussed in detail. The plex issue related to the effectiveness of inhibitors in repairs is addressed, based on analysis of the differences between electrochemical activities in new and repaired structures. The paper concludes that as long as one continues to blindly use protection methods applicable for newly constructed structures for concrete repairs, the business of repairing the repairs will be on the rise. A broader understanding of the electrochemical differences between new and repaired concrete is necessary for effective protection of reinforcement in repaired structures. 2021 Elsevier Ltd. All rights reserved. Keywords: Alkalinity。 很多修理失敗可能歸因于缺乏對自然和電化學活動在修理系統(tǒng)內(nèi)結(jié)果的完整理解。 我們怎樣能期望被修理的混凝土結(jié)構(gòu)是耐用的呢？如果測驗方法，腐蝕保護方法的設計和說明都不可靠，難道依賴在修理系統(tǒng)里的電化學類似于那在 新建筑 里發(fā)生的不適當?shù)募俣▎?？修理工作和新建筑有著重要的不同，不同因素?jīng)常導致新的修理混凝土結(jié)構(gòu)方面的鋼筋腐蝕。它要暴露在外部環(huán)境和內(nèi)部的環(huán)境，并受到環(huán)境間的相互作用。與建筑在修理的幾年之后出現(xiàn)裂縫相比，幾乎沒有問題能加劇公眾與政府之間的沖突，并且導致他們對我們提供的建筑物用途的功能感到不滿意。文章標題用 3 號宋體，章節(jié)標題用 4 號宋體，正文用小 4 號宋體， 20 磅行距；頁邊距上、下、左、右均為 ，左側(cè)裝訂，裝訂線。與抑制劑在修理效力有關(guān)的復雜論文已經(jīng)發(fā)表，其中主要對基于電化學活動在新結(jié)構(gòu)和修復結(jié)構(gòu)方面之間差別進行了分析。終究，我們必須從繁忙的工作表中周期性地抽身出來，回顧一下 ,我們在哪里和我們可能將要去哪里。 一個烏托邦夢想存在，是因為問題可能被藉由 使用高性能的材料，防腐劑，保護材料等等或者安全帶和懸掛系統(tǒng)等措施來解 決。無論我們做什么，無用的言論總是很多。我們怎能期望 花費在修理的鋼筋附加保護上 錢沒被浪費？目前使用過的一些測驗方法以后的研究范圍也相當狹窄。FN Spon。19(3):47–56. [5] Rebar protection alternatives. Concrete Repair Bulletin, International Concrete Repair Institute (ICRI) 1993。 可以斷定 高質(zhì)量新混凝土 和高質(zhì)量的修理是埋入鋼筋防止腐蝕的最好保護系統(tǒng) 這是混凝土技術(shù)的基礎(chǔ)。不適當?shù)慕逃脱芯吭谌魏晤I(lǐng)域都將要花大力氣來改正誤解。 要設計耐用修理的知識在馬瑟 [1]的著作 完全精煉說明 里已經(jīng)敘述， 但是這種使用此知識的方式是第一次。但是只有當想法得到爭論時，才可能取得進步，并且