Enhanced corrosion resistance of reinforced concrete: Role of emerging eco-friendly Elaeis guineensis/silver nanoparticles inhibitor

被引：80

作者：

Asaad, Mohammad Ali ^{[1
]}

Ismail, Mohammad ^{[1
]}

Tahir, Mahmood Md ^{[2
]}

Huseien, Ghasan Fahim ^{[1
]}

Raja, Pandian Bothi ^{[3
]}

Asmara, Yuli Panca ^{[4
]}

机构：

[1] Univ Teknol Malaysia, Fac Civil Engn, Utm Johor Bahru 81310, Johor, Malaysia

[2] Univ Teknol Malaysia, Fac Engn, Inst Smart Infrastruct & Innovat Construct, UTM Construct Res Ctr,Sch Civil Engn, Johor Baharu 81310, Johor, Malaysia

[3] Univ Sains Malaysia, Sch Chem Sci, Usm Pulau Pinang 11800, Penang, Malaysia

[4] Univ Malaysia Pahang, Fac Mech Engn, Corros & Fracture Res Grp, Perkan 26600, Pahang, Malaysia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 188卷

关键词：

EG/AgNPs; Green corrosion inhibitor; Corrosion resistance; Reinforced concrete; Half-cell potential; Morphology; CHLORIDE-INDUCED CORROSION; EARLY-STAGE HYDRATION; SILVER NANOPARTICLES; GREEN SYNTHESIS; LEAF EXTRACT; MILD-STEEL; COMPOSITE CEMENTS; SILICA; PERFORMANCE; BEHAVIOR;

D O I：

10.1016/j.conbuildmat.2018.08.140

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Silver nanoparticles (AgNPs) doped palm oil leaf (Elaeis guineensis/EG) extracts (EG/AgNPs) were prepared as novel, non-toxic, and eco-friendly corrosion inhibitor; which were incorporated in cement composite and examined against reinforcement steel corrosion in natural seawater. Standard corrosion monitoring techniques including linear polarization resistance (LPR), potentiodynamic polarisation, half-cell potential (HCP) and electrical resistivity were used to screen corrosion inhibition potential of EGJAgNPs enabled steel reinforced concrete after exposing them weekly to wet and dry cycles in seawater. Besides, the microstructural, morphological, thermal and elemental properties of such concrete at 365 days of exposure were determined. The microstructures of powder of EG/AgNPs inhibitor, pre- and post-treated concrete (powder and small pieces) as well as the steel reinforcement surface were analysed. Incorporation of 5% green EG/AgNPs inhibitor into the steel reinforced concrete revealed enhanced corrosion resistance, where a protective thin barrier was developed over the steel reinforced surface. This improvement was attributed to the formation of extra calcium silicate hydrate (C-S-H) gel in the concrete and thereby blocked the concrete pores. The maximum inhibition efficiency was recorded to be as much as 94.74%. It is established that these green EGIAgNPs has prospective for optimum corrosion inhibiting treatment to achieve durable concrete structures. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：555 / 568

页数：14

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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2018, 63 :139-148

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