土木外文翻譯--通過再堿化技術(shù)增加鋼筋混凝土的使用-其他專業(yè)-資料下載頁
2025-01-19 08:29本頁面
【導(dǎo)讀】不受外部因素條件和內(nèi)部因素條件惡化的經(jīng)濟(jì)型材料。當(dāng)有效的保護(hù)氧化膜為鋼筋構(gòu)件的工作提供良好的工作條件時(shí)，混凝土就能夠很有效的保護(hù)鋼筋免受腐蝕的作用。鋼筋產(chǎn)生一種性質(zhì)穩(wěn)定的鈍化層，從而限制金屬的氧化。這種使鋼筋鈍化而產(chǎn)生的保護(hù)膜由于高濃度的氯化物，具體的碳酸鹽化合物，蝕產(chǎn)生的額外費(fèi)用卻沒有包括在建設(shè)項(xiàng)目之中。工作應(yīng)用于一個(gè)位于農(nóng)業(yè)生產(chǎn)地區(qū)的學(xué)校建筑。筋混凝土繼續(xù)腐蝕，并且延長(zhǎng)了建筑結(jié)構(gòu)的使用壽命。對(duì)不同的建筑進(jìn)行了初步及詳細(xì)的檢查。得到的診斷結(jié)果表明了這些建筑物的已經(jīng)達(dá)到的損害程度?；謴?fù)兩年周期的而強(qiáng)制進(jìn)行的。3-測(cè)試腐蝕檢測(cè)，使用半電池電位測(cè)量按美國(guó)ASTMC-876。為了進(jìn)行第一次測(cè)試，6根管子被連續(xù)3年埋在研究部位。碳化實(shí)驗(yàn)取得的結(jié)果表明，碳化面平均在邊處有5mm,在角處有10mm。柱管的電勢(shì)值，以遵循老化過程的影響。相應(yīng)的平均值列入表1。
【正文】 cylindrical tubes were carried out, so as to follow the aging process effect. The corresponding mean values are included in Table 1. Table 1: Potential test tubes corrosion time (months) 2 4 6 8 10 11 Ecorr (mV) 298 375 462 512 560 620 According to the registered values and the test tubes physical states which became ochre with longitudinal fissures, it was estimated that the test tubes reinforcement was corroded. It is necessary to remark that to perform the realkalization technique。 an anode was redesigned and elaborated. The anode with an AISI 316, φ steel wire forming a mesh located between two layers made of gauze and cellulose fibre pulp. The tension and current source: 1A /40 V. The selected electrolyte is a LiOH solution. Uptodate there are no enough test values to determine all the advantages of this technique. It shows a simplified scheme of the realkalization process a reinforced concrete cylindrical test tube. 4. Partial conclusions. In general, the inspected school buildings were from fairly accepted to uninhabited conditions state. The school sampled has structural elements with severe corrosion in its iron columns resulting from negative contents such as, sulphates, chlorides and concrete carbonation, as well. As the drainage system fails to be appropriate for the area, since it has very high phreatic levels, it will be convenient to build new system to minimize the fluctuations of the phreatic layer, so as to avoid salts concentrations. Applying the artificial aging technique to test tubes, it was possible to create the required conditions to simulate the real state of the reinforced concrete in the columns of the sample under study. It is important to emphasize that it was possible to simulate the conditions of the buildings columns, so as to apply the realkalization at laboratory level, in order to improve the technique implementation and get better results when working with the real columns. References. ASTM C876 Standard Test Method for Half Cell Potentials of Reinforcing Steel in Concrete, Annual Book of ASTM Standards, Vol. , 1983. Cyted, “Manual de inspecci243。n, evaluaci243。n y diagn243。stico de corrosi243。n en estructuras de hormig243。n armado”. Brasil, 1997 Feli, S. y Andrade, C “Manual de Inspecci243。n de Obras Da241。adas por Corrosi243。n de Armaduras” Centro Nacional de Investigaciones Metalrgicas (CENIM) y el Instituto Eduardo Torraja de Ciencias de la Construcci243。n, Madrid, . Rodr237。guez J, Ortega ., Garc237。a . “Medida de la velocidad de corrosi243。n de las armaduras en estructuras de hormig243。n, mediante un equipo desarrollado dentro del proyecto Eureka401” Hormig243。n y Acero 1993. Solorza, B。 Ocampo, I。 Vuanello, O. “Corrosi243。n Del Acero En Estructuras De Hormig243。n Armado En Zonas De Revenici243。n” 15170。 Reuni243。n T233。ica. Seminario De Hormigones Especiales. Santa Fe Argentina 2021 Sturm y . Kosmatka, Detecting Carbonation, Concrete Technology Today, marzo de 1991.
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