دانلود رایگان مقاله لاتین تحلیل محتوای کلرید از سایت الزویر
عنوان فارسی مقاله:
تجزیه و تحلیل محتوای کلرید کل در بتن
عنوان انگلیسی مقاله:
Analysis of total chloride content in concrete
سال انتشار : 2015
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مقدمه انگلیسی مقاله:
1. Introduction
Concrete structures that are constructed according to the required specifications and standards show excellent durability and perform well over their service life. Deterioration of concrete may occur due to a number of mechanisms. Corrosion of steel reinforcement is the most destructive form of damage affecting serviceability and strength of concrete structures (Page and Treadaway, 1982). The chemical environment in concrete normally passivates the steel reinforcement in which a tenacious oxide passive film is formed on the surface of embedded reinforcing steel under high alkaline condition of concrete which protects steel reinforcement against corrosion (Barkey, 2004). The condition of passivity can be destroyed due to the process of absorbing chloride ions (Crentsil et al., 1992). This is considered as the most aggressive and most wide spread corrosive ion since it contributes to corrosion of steel reinforcement (Barberon et al., 2005). Fraczek (Fraczek, 1987) suggests that chloride contamination is probably the most critical as it isobserved to initiate the form of corrosion that is much more severe and detrimental to the integrity of concrete structure. Chloride acquires different forms in concrete which include chemically bound, physically absorbed, and free chloride. Only free chloride is responsible for rebar corrosion in concrete (Tutti, 1982). Chlorides may be incorporated into the concrete through mixing water, chloride contaminated aggregates or chloride containing admixtures (Saricimen et al., 2002; Arya and Xu, 1995; Hussain et al., 1996; Dehwah et al., 2002). Therefore; this research is aimed to analyze total chloride content in concrete in conjunction with other ingredients required for the mix according to total chloride standardized limits in concrete and its ingredients and by considering actual concrete mix designs.
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کلمات کلیدی:
[PDF]Analysis of total chloride content in concrete - rilem www.rilem.org/images/publis/1340.pdf The present recommendation describes the so-called. Volhard Method of analysis (extraction and quantifica- tion) of total chloride content in hardened concrete. [PDF]Analysis of water soluble chloride content in concrete - rilem www.rilem.org/images/publis/1341.pdf tion of bound chlorides. For free chlorides, it is gener-. Analysis of water soluble chloride content in concrete. RILEM TC 178-TMC: 'TESTING AND MODELLING ... Chloride Content by Weight of Concrete| Concrete Construction ... www.concreteconstruction.net/how-to/chloride-content-by-weight-of-concrete_o Nov 1, 1997 - For corrosion protection, ACI 318-95, Building Code Requirements for Structural Concrete, specifies maximum water-soluble chloride ion in ... [PDF]Chloride content limits recommended by ACI Committee 201 www.concreteconstruction.net/_view-object?id=00000153-8b97-dbf3-a177... some might recommend that all chloride in concrete be ... ACI COMMITTEE 201'S 1977 RECOMMENDATIONS ON CHLORIDE CONTENT OF CONCRETE. [PDF]Chloride Content of Portland Cement Concrete Powder by a Method ... onlinepubs.trb.org/Onlinepubs/trr/1991/1301/1301-017.pdf cement concrete powder suspension in hot water. The clear de- cant is analyzed for chloride content using a chloride ion-selective electrode. The minimum ... [PDF]Chloride Content of Fresh Concrete - NZRMCA www.nzrmca.org.nz/portals/.../Chloride%20Content%20of%20Fresh%20Concrete.pdf Chloride Content of Fresh. Concrete. Introduction. Corrosion of steel reinforcement is a significant concrete durability problem in New. Zealand. It is caused by ... Chloride in concrete (BS 8500) - Concrete Society www.concrete.org.uk/fingertips-nuggets.asp?cmd=display&id=917 BS 8500 Concrete – Complementary British Standard to BS EN 206 requires that concrete should have a maximum chloride ion content by mass of cement ... Searches related to chloride content in concrete determination of chloride content in concrete chloride content in concrete test chloride threshold for corrosion of reinforcement in concrete allowable sulphate content in concrete how to determine chloride content in concrete determination of chloride content in cement how to calculate chloride content in concrete chloride content in water for concrete
