Commercial Corrosion Inhibitors Research Articles

Analysis of the Effectiveness of the Application of Corrosion Inhibitors to Steel Re-Bars Embedded in Concrete

Reinforced concrete is the most widely used material in the construction of building structures, being noted for its versatility and low cost. However, the durability of reinforced concrete structures can be compromised by the corrosion of steel re-bars, especially in the presence of chlorides. To address this challenge and promote sustainability, the use of corrosion inhibitors has been researched as a way to extend the lifespan of structures. This study assessed the effectiveness of using a commercial corrosion inhibitor on steel re-bars embedded in types of concrete with different chloride percentages, using electrochemical methods to measure the corrosion rate and potential. The results indicate that, in the absence of corrosion inhibitors, corrosion rates become unacceptable with chloride percentages equal to or higher than 0.8% by weight of cement. The application of inhibitors significantly reduced the corrosion rate, particularly at chloride percentages of 0.8% and 1.2%, maintaining the re-bars in a passive state or at moderate levels of corrosion. However, for chloride percentages higher than 1.6%, high levels of corrosion were observed, even in the presence of inhibitors. The findings suggest that the use of inhibitors can be an effective strategy in preventing corrosion in reinforced concrete structures, contributing to their structural integrity and long-term sustainability.

SYNTHESIS AND TESTING OF ACTIVE BASES FOR CORROSION INHIBITORS

The results of electrochemical testing of new active bases for the creation of commercial corrosion inhibitors under conditions simulating general and local corrosion are described. General corrosion using corrosion current, working electrode geometry, State Standard 9.506-87 methodology was calculated. The anodic polarization of the working steel electrode was a physical model and the basis for calculating local corrosion. The protective effect of reagents for the model environments of the Ural-Volga region and Western Siberia oilfields (Samotlor oilfield) were determined. Comparative measurements of the corrosion rate of substituted 1,3-dioxanes, ethanolamine benzoate with a commercial corrosion inhibitor were carried out. It was found that the best protective effect against general corrosion at the level of a commercial imidazoline-type corrosion inhibitor in the model environment of the Ural-Volga region (according to State Standard 9.506-87) and Western Siberia oilfields (Samotlor oilfield) has ethanolamine benzoate. Electrochemical modeling of local corrosion and measurement of the protective effect showed that ethanolamine benzoate has an inhibitory effect on the rate of local corrosion in the model environment of Ural-Volga oilfields and is promising for modifying commercial inhibitors and expanding the efficiency of these reagents.Reducing the risk of local corrosion requires special testing under conditions of simulation of this type of corrosion for commercial reagents.

Extraction and characterisation of Cerbera odollam seed oil as a potential plant-based corrosion inhibitor

Certain types of commercial corrosion inhibitors consist of a specific, tannic acid-derived compounds. Tannin compounds are antioxidants and widely found in many species of plants. In this works, oil from the seeds of the poisonous fruit, sea mango (Cerbera odollam), was seen as a potential candidate for a natural corrosion inhibitor. The oil was extracted via solvent extraction using a Soxhlet extractor for 6 hours at varying temperatures between 100 to 200 °C. The solvents used were hexane and methanol. Structural characterisation of active corrosion inhibition compounds in the oil samples was analysed using Fourier Transform infrared spectroscopy (FTIR) and Gas Chromatography Mass Spectroscopy (GC-MS). Thermogravimetric analysis (TGA) was done to determine the seed oil’s thermal stability and decomposition temperature. The highest extraction yield was found using hexane as the solvent at 150 °C. TGA results indicated that the oil was stable at temperatures below 200 °C. The presence of carboxylic acids, as evidenced by the FTIR and GC-MS analysis, indicated possible corrosioninhibitive properties of the extracts. Phytochemical screening tests revealed that tannin, saponin, phenol, and steroid were present in the sea mango seed oil while flavonoid was undetected

Effect of corrosion inhibitor on service life of cracked and non-cracked concrete

Corrosion of steel in reinforced concrete structures can cause damage and costs involved and attracts researchers to look for solutions that delay the onset of corrosion initiation or slow its development. The effectiveness of four corrosion inhibitors in cracked and non-cracked sections of reinforced concrete was studied: Migrating Corrosion Inhibitor (MCI-2005) based on amine carboxylate; CNCI 1.37 based on calcium nitrite Ca (NO)2 at a concentration of at least 30%; and two lab-made green corrosion inhibitors based on recycled materials – fluorosilicates obtained from fluorosilicic acid (H2SiF6), the by-product of the phosphate industry, and from LABS (Linear Alkyle Benzene Sulphonate), the by-product of the detergent industry. The study followed the guidelines of the ASTM G-109 standard which examines materials intended to inhibit chloride-induced corrosion of steel in concrete, and the ASTM C-876 standard which evaluates the electrical corrosion potential of uncoated reinforcing steel, for the purpose of determining the corrosion activity of the reinforcing steel. Controlled artificial cracks of different depth were created to speed up the corrosion process in the steel. Such cracks allowed a direct penetration of chlorides into the depth of concrete. As was expected, the cracked concrete samples exhibited a significantly higher level of corrosion than the non-cracked samples. In the non-cracked samples, the effectiveness of the CNCI 1.37 commercial corrosion inhibitor was the highest. However, in the cracked samples it appears that its efficiency has decreased, while the recycled corrosion inhibitor based on K2SiF6 has shown the best performance. This result can be explained by the fact that fluorosilicate reacts with calcium hydroxide present in concrete and creates a non-permeable protective layer that inhibits the movement of chlorides to the steel bar.

Electrochemical and DFT theoretical evaluation of the Randia monantha Benth extract as an eco-friendly corrosion inhibitor for mild steel in 1 M HCl solution

BackgroundDue to the growing concern about environmental pollution caused by commercial corrosion inhibitors, the anticorrosive properties of several natural products have been studied. MethodsThe present work assessed the inhibition performance of Randia monantha pulp and seed (RMPS) extract on corrosion of A36 mild steel in 1M HCl solution through weight loss and electrochemical measurements such as potentiodynamic polarization curves (PPC) and electrochemical impedance spectroscopy (EIS). Surface analysis was carried out using scanning electronic microscopy (SEM) and energy dispersive spectroscopy (EDS). Chemical characterization of RMPS extract and theoretical studies of its chief compounds were performed by spectroscopic studies and density functional theory (DFT) calculations, respectively. Significant findingsElectrochemical measurements results showed that corrosion inhibition increased as inhibitor concentration increased, achieving an acceptable inhibition efficiency of 91% at 1000 ppm. Polarization curves indicated that molecules of RMPS acted as a mixed-type inhibitor and their adsorption process obey the Langmuir isotherm manly by physisorption mechanism. Examination of corroded steel surface by SEM and EDS confirmed the adsorption of compounds presented in the extract. The chemical quantum calculations allowed to obtain electronic properties of the chief compounds of the natural extract and explained the inhibitor/metal surface interactions and adsorptions modes.

Utilization of Rice Straw Extract as Corrosion Inhibitor to Decreasing Effect of Elevation on CS Pipeline using Olga Simulator

In many infrastructure of oil and gas industries, corrosion is one of the most problems that often occur, especially in pipelines. Corrosion is caused by an electrochemical reaction between material surface and corrosion fluid. This problem will affect the economy, safety, and conservation. In this case, we should give a solution such as a method or tools to minimize corrosion’s effect so, it can improve safety and minimize the potential problems caused by corrosion and loss more cost. One of the ways is using organic corrosion inhibitors such as biomass agriculture waste and plant extract. A corrosion prediction model can be used to predict the corrosion rate such as NORSOK and de Waard models. Both methods are available in Olga Simulation software by Schlumberger that were used in this paper. Some of the parameters that influence corrosion were also tested: Evaluation of 1°, 2°, 3°, 4 °, and 5° of pipeline elevation to corrosion rate. Meanwhile, 31.71% of rice straw extraction (RSE) with 75% IE was used as a corrosion inhibitor compared with 30% of mono-ethylene glycol with 26% IE and 38.97% of lignin with 61% IE to determine the period of pipeline per year and to design of the pipeline. RSE that contains lignocellulose was able to give higher efficiency to decreasing corrosion. Moreover, this organic inhibitor give low cost. Therefore, this biomass would be potential as an alternative inhibitor rather than a commercial corrosion inhibitor with high cost.

Effects of Different Coatings, Primers, and Additives on Corrosion of Steel Rebars

In this research, methods of increasing the corrosion resistance of reinforced concrete were experimentally investigated. The study used silica fume and fly ash at optimized percentages of 10 and 25% by cement weight, polypropylene fibers at a ratio of 2.5% by volume of concrete, and a commercial corrosion inhibitor, 2-dimethylaminoethanol (Ferrogard 901), at 3% by cement weight. The corrosion resistance of three types of reinforcements, mild steel (STt37), AISI 304 stainless steel, and AISI 316 stainless steel, was investigated. The effects of various coatings, including hot-dip galvanizing, alkyd-based primer, zinc-rich epoxy primer, alkyd top coating, polyamide epoxy top coating, polyamide epoxy primer, polyurethane coatings, a double layer of alkyd primer and alkyd top coating, and a double layer of epoxy primer and alkyd top coating, were evaluated on the reinforcement surface. The corrosion rate of the reinforced concrete was determined through results of accelerated corrosion and pullout tests of steel-concrete bond joints and stereographic microscope images. The samples containing pozzolanic materials, the corrosion inhibitor, and a combination of the two showed significant improvement in corrosion resistance by 7.0, 11.4, and 11.9 times, respectively, compared to the control samples. The corrosion rate of mild steel, AISI 304, and AISI 316 decreased by 1.4, 2.4, and 2.9 times, respectively, compared to the control sample; however, the presence of polypropylene fibers reduced the corrosion resistance by 2.4 times compared to the control.

High-temperature electrochemical corrosion behavior of SA106 Grade B carbon steel with corrosion inhibitors in HyBRID solution

The electrochemical corrosion behaviors of SA106 Grade B (SA106B) carbon steel in H2SO4-N2H4 and H2SO4-N2H4-CuSO4 solutions at 95 °C have been investigated with the addition of commercial corrosion inhibitors (CI#30 and No. 570S), to determine the stability of SA106B in the hydrazine-based reductive metal ion decontamination (HyBRID) process. The potentiodynamic polarization experiment revealed that the corrosion inhibitors were capable of lowering the corrosion rate of SA106B in H2SO4-N2H4 solution. It was found that the corrosion inhibitors induced formation of fixed surface layer on the carbon steel upon the corrosion. This corrosion inhibition performance was reduced in the presence of CuSO4 in the solution owing to the chemical reactions between organic compounds in the corrosion inhibitors and CuSO4. CI#30 showed a better corrosion inhibition effect in the H2SO4-N2H4-CuSO4 solution. Although the corrosion inhibitors can provide better stability to SA106B in the HyBRID solution, their application should be carefully considered because it may result in reduced decontamination performance and increased secondary waste generation.

Screening and Benchmarking of Commercial Corrosion Inhibitors for Organic Acids Corrosion Mitigations

More aggressive reservoir conditions, such as higher concentrations of CO2 corrosive gases, have a massive effect on corrosion. Moreover, additional aqueous species, such as organic acids, have complicated the conditions and enhanced corrosion to the maximum rate. This study investigates and screens three commercial corrosion inhibitors on their performance in mitigating corrosion at welded areas of carbon steel in high CO2 conditions with the presence of organic acids. These investigations were conducted via chemical elucidations to study the functional groups present in the compounds that affect the inhibition performance and the electrochemical measurements to evaluate the inhibition activities and efficiency of these commercial inhibitors under extreme conditions of high CO2 and organic acids. The results indicated that only CT5727 and CT17906 gave a high inhibition efficiency of 90% in the absence and presence of organic acid, with CT5727 giving the lowest corrosion rate of 0.038 mmpy in the absence of organic acid, while CT17906 gave the lowest corrosion rate of 1.00 mmpy in organic acid condition. On the other hand, D4305 gave the worst inhibition performance under both conditions. The elucidation of these inhibitors also found that specific functional groups such as hydroxy, carboxylic acid, alkyl and alkene presence in the structure were believed to affect the inhibition performance of these commercial inhibitors in mitigating corrosion. These could be used as a future reference for the new development of corrosion inhibitors in similar conditions.

Comparative study of anti-ulcer drugs with benzimidazole ring as green corrosion inhibitors in acidic solution: Quantum chemical studies

The corrosion of metals in acidic environments is a grave concern, with the conventional use of commercial corrosion inhibitors leading to environmental toxicity. To address this issue, non-toxic, cost-effective drugs that have a minimal impact on the environment have the potential to replace traditional toxic inhibitors. This study aims to evaluate the molecular orbital properties of benzimidazole-containing drugs such as omeprazole, esomeprazole, and pantoprazole, through density functional theory (DFT), to assess their ability to act as corrosion inhibitors and explore their mechanism of inhibition. The study found that all three compounds have the ability to form a barrier film on the metal surface, with omeprazole being slightly more reactive than the others. Omeprazole and esomeprazole were found to be softer than pantoprazole, indicating that they are more reactive towards the metal surface. The study also found that the active sites of all compounds are located in the benzimidazole ring along with the methyl and methoxy groups. Additionally, the inhibitor molecules are adsorbed onto the metal surface through the active sites by transferring their electrons towards the metal surface. The adsorption energy calculation indicates that Omeprazole and Pantoprazole, with more negative adsorption free energy, exhibit superior corrosion inhibition ability compared to Pantoprazole. Overall, the study provides valuable insights into the potential use of these drugs as effective corrosion inhibitors.

Electrochemical corrosion study of La(Fe11,6-xSix1,4Mnx)H1,5 in diverse chemical environments

La-Fe-Si-based alloys represent a promising material class for magnetocaloric cooling at ambient temperatures, but contain highly oxophilic elements and are chemically sensitive, which impairs their continued operation in aqueous heat exchange media. The development of protection strategies ensuring long-term stability necessitates a comprehensive understanding of the material's corrosion characteristics. The present work focuses on a such an assessment for hydrogenated La(FeMnSi)13 containing α-Fe to enhance it's mechanical properties. Linear sweep voltammetry served as the main analytical tool and was performed in preferably buffered electrolytes with pH values reaching from moderately acidic to strongly alkaline, in the presence and absence of corrosion-enhancing species (chloride, chelators). α-Fe, La1Fe1Si1, and La(FeSi)13 were employed as reference materials to clarify the passivation pattern of the material in carbonate buffer. Specific chemical compounds with clear mechanistic impact (phosphate acting as precipitate former, hydrazine as oxygen scavenger) were tested alongside commercial corrosion inhibitors to investigate their effects. Our objective is to provide a systematic evaluation of the corrosion properties of the alloy system, building on previous investigations and taking into account its general materials chemistry.

Investigation of efficient corrosion inhibitor during acid cleaning of reverse osmosis (RO) desalination plant

Reverse osmosis (RO) technology plays a vital role in seawater desalination production, while salt scaling phenomenon is an inevitable problem during operation. Accordingly, glucuronide-substituted catechin (CG) was synthesized and developed here as an eco-friendly inhibitor for the first time, whose corrosion inhibition performances for desalination equipment alloys (i.e., carbon steel, brass, Ni-resist, and 316 L stainless steel) in 2% HCl solution were evaluated by experiments and theoretical calculations. At a concentration of 200 mg/L, CG achieved 97.81% corrosion inhibition for carbon steel, 85.91% for Ni-resist, 92.11% for brass, and 77.95% for 316 L stainless steel in weight loss experiments. The 90-hours static stability test was carried out by weight loss method, and the inhibition performance of CG was compared with that of a commercial corrosion inhibitor used in seawater desalination plant. The structural of the protective film on the metal surface was analyzed by EDX and XPS. Quantum chemical calculations based on density functional theory (DFT) and MD simulations were performed to optimize the CG molecular structure and investigate the inhibitive properties on the theoretical level, which agree well with the experimental results.

New Developments in Inhibition of the Sweet Environment in a Variety of Corrosive Media: A Review

This paper aims to look at how pipeline steel and crude oil storage tanks resist corrosion in aqueous carbon dioxide (CO2) environments. To this aim, we have studied different inhibitors, particularly the heterocyclic inhibitor, which is used to prevent mild steel corrosion in various situations. On mild steel, the corrosion-prevention mechanism of heterocyclic inhibitors is also investigated. CO2 corrosion is the most frequent and dreaded type of corrosion in the oil and gas industry, and corrosion inhibitors are the most effective way to fight CO2 corrosion in mild steel. Nonetheless, continual exposure to pollutants and corrosion causes such as sulfur and chromate on pipeline surfaces is unavoidable. Because of their toxicity, commercial corrosion inhibitors are being used less frequently to protect the environment. As a result of the advent of "green" chemistry and fruit waste, both of which have been demonstrated to be efficient corrosion inhibitors, plant extracts have become popular. This research aims to compile a list of carbon dioxide corrosion inhibitors that have been proved to protect against this type of attack. The material on this page is relevant to the gas and oil industries, which rely on steel pipelines and crude oil tanks to transport oil and gas products. This study will also help develop better CO2 corrosion inhibitors for the gas and oil industries.

Vegetable-based steel corrosion inhibitors for the protection of oilfield equipment

In this work, steel corrosion inhibitors from vegetable raw materials have been obtained to protect oilfield equipment from the corrosive action of formation waters. Extracts from the bark of "Norway spruce" and "Scots pine" were used as an inhibitor of steel corrosion. The main component of spruce and pine bark extracts with an anti-corrosion effect is tannins - a group of phenolic compounds of plant origin that have tanning properties and are capable of forming compounds with iron that are slightly soluble in water - iron tannates. The content of tannins in the extract from the bark of Norway spruce was 13.4%, in the extract from the bark of pine - 3.3 %. Corrosion tests were carried out in accordance with GOST 9.506-87 and GOST 9.502-82. The degree of protection of steel grade "Steel 20" with the addition of the spruce bark extract was 88.9 %, with the addition of pine bark extract - 74.9 %, at a dosage of 50 g/dm3. Commercial corrosion inhibitors of steel grades SNPKh-1004 and TNKhS-7 at a dosage of 1g/dm3 showed the degree of steel protection up to 92 and 90.3 %, respectively. Corrosion of steel in the formation water of oil of the Devonian sediment develops 1.5 times more intensively than in the model formation water. The best result in terms of the degree of steel protection with the addition of spruce bark extract and pine bark extract with a concentration of 50 g/dm3 was 80.0 % and 41.8 %, respectively. Thus, the corrosion resistance of the metal in accordance with GOST 9.502-82 as a result of the use of spruce bark extract as a corrosion inhibitor in the model formation water corresponds to the "stable" level, in the formation water of oil of the Devonian sediment it corresponds to the "reduced" level.Electron-microscopic measurements were carried out within the framework of the state task of the Federal Research Center of KazSC RAS No. AAAA-A18-118041760011-2.

Dandelion-Root Extract as Green Corrosion Inhibitor for Carbon Steel in CO2-Saturated Brine Solution

Recently, due to the corrosion problem in the petroleum industry and the usage of commercial corrosion inhibitors, which, when released untreated into the environment, are considered to be environmentally unfriendly, green corrosion inhibitors are being researched. In this paper, the results of dandelion-root-extract testing as a green corrosion inhibitor for carbon steel in simulated brine solution saturated with carbon dioxide (CO2) are shown. The extract’s inhibition efficiency in static and flow conditions was determined by using potentiodynamic polarization with Tafel extrapolation and electrochemical-impedance-spectroscopy methods. In static conditions, the extract was tested at different concentrations. A maximum inhibition efficiency of 98.37% in static conditions at an extract concentration of 12 mL/L and 82.80% in flow conditions at a concentration of 14 mL/L was achieved. Additionally, for the most efficient dandelion-root-extract concentration (12 mL/L), the biodegradability and toxicity were determined. A biodegradability of 0.96 and a toxicity of 2.38% was achieved. Based on the obtained results of the conducted laboratory measurements, it can be concluded that dandelion-root extract has significant potential in terms of its use as a green corrosion inhibitor for carbon steel in a CO2-saturated brine solution.

Evaluation on steel corrosion in water-based drilling fluids: Inhibitors and scale involvement

The purpose of this research is to investigate the behaviour of steel corrosion protection in four different fluids; seawater, tap water, 10 ppg sodium chloride (NaCl) and 12 ppg potassium formate (HCOOK) which are typically used as drilling fluid in oil and gas platform. Corrosion assessment of steel exposed to simulated underbalanced drilling (UBD) wells has been examined via immersion test by weight loss technique. The experiment was carried out in high pressure-high temperature (HPHT) for 30 h in the laboratory stirred autoclave. Two commercial corrosion inhibitors were used in studying the behaviour of the surface protection. Results showed the corrosion rate was dependent on the types of fluids and inhibitors used. The order of corrosion severity or rate of steel corrosion in the individual fluids are; tap water < HCOOK < seawater < NaCl. The observation on the surface morphology through electron microscope depicted the uniform corrosion was the predominantly attack rather pitting and oxide scale formation. The scale formation on the steel surface were discussed.

Copper strip corrosion testing in hydrocracked base oil in the presence of different inhibitors

In this paper, the corrosion test of copper in hydrocracked base oil HC-6 was performed in the presence of an additive for extremely high pressures (EP additive) in different concentrations. EP additives are used to reduce wear in industrial applications, under high load conditions. Since most of these additives are sulfur-based, whose compounds can be corrosive at high temperatures, their use leads to corrosion of some materials. To prevent corrosion in the base oil with the EP additive, three commercial corrosion inhibitors are added. By chemical composition, the inhibitor RC 8210 is a derivate of dimercaptothia-diazole, RC 4220 is a synthetic neutral calcium sulfonate, and IRGAMET 39 is a derivative of tolutriazole. Efficiency of the inhibitors was monitored by standard test methods for corrosiveness to copper arising from petroleum products by the copper strip test (ASTM D-130) and the gravimetric method, while oxidation stability of the base oil was monitored by peroxide number determination. Oxidation was performed at 100?1?C for 3 and 24 h. Results of these studies have shown that IRGAMET 39 is the most effective inhibitor in the presence of the EP additive at both examined oxidation times.

Iron sulphide formation and interaction with corrosion inhibitor in H2S-containing environments

Corrosion of carbon steel in H2S-containing environments poses serious challenges to operations in oilfield and geothermal applications. Carbon steels exposed to H2S-containing environments are often susceptible to pitting and uniform corrosion, and linked to the properties of iron sulphide (FeS) layers that forms at the corroding interface. This paper investigates the corrosion characteristics of carbon steel in H2S-containing environments focussing on the early stage kinetics of FeS formation and its interaction with corrosion inhibitors (CI). Experiments were conducted in 3.5 and 5.8 wt% NaCl solution at 80 °C in 10% H2S-90% CO2-containing environments. In-situ electrochemical responses were measured using the linear polarisation resistance (LPR) technique. This was combined with post-experiment surface analysis; scanning electron microscopy (SEM) and X-ray diffraction (XRD) to investigate the nature and morphology of formed FeS. 3D surface profilometry was used to investigate the pitting corrosion characteristics of carbon steel caused by FeS interaction with CI. The results show a fast kinetics of FeS formation by direct reduction of H2S(aq) with a distinct and easily identifiable morphology, and evidence of minimum level of ferrite dissolution. The early stages of FeS formation and its interaction with CI have a strong influence on the overall corrosion characteristics of carbon steel. A dose of 30 ppm of a commercial corrosion inhibitor (CI); salts of nitrogenous molecules with a fatty acid group, at the corrosion interface induced a competition for surface absorption between CI and emerging FeS. Over the 48 h duration of this test, the FeS formation process was delayed and the mechanisms of its formation quickly became the main driver of pitting corrosion. The amount of CI dosed in this study was not able to prevent FeS-induced pitting corrosion attack on the surface.

Performance of waterborne polyurethane based on N-tert-butyldiethanolamine in corrosion inhibition

The design of bifunctional inhibitors effectively preventing hydrate formation and corrosion is a relevant issue for the oil and gas industry. In this work, we expanded the study of the corrosion inhibition effectiveness for waterborne polyurethanes (WPUs) obtained earlier and shown to be promising inhibitors. The corrosion inhibition ability of WPUs was assessed using weight-loss and electrochemical methods. Commercial corrosion inhibitor Armohib CI-28 was taken as a reference sample. The data obtained showed that the tert-Bu-WPU sample is able to effectively inhibit acid and carbon dioxide corrosion at room temperature; however, with an increase in temperature, its efficiency decreases more intensively than for a commercial inhibitor. In general, waterborne polyurethanes are promising alternatives to commercial reagents due to their multifunctionality.

Azadirachta indica Leaf Extract as Green Corrosion Inhibitor for Reinforced Concrete Structures: Corrosion Effectiveness against Commercial Corrosion Inhibitors and Concrete Integrity.

The construction industry has extensively demanded novel green inhibition strategies for the conservation and protection of carbon steel-reinforced concrete structures. For the first time, the effect of Azadirachta indica leaf extract (Neem) as a potential corrosion inhibitor of carbon steel in reinforced concrete under corrosion in saline simulated media was evaluated. To assess the corrosion inhibition behavior of the Neem natural organic extract, three inorganic commercial inhibitors were tested to compare following the criteria established by Stratful for half-cell potential under a simulated chloride environment. Moreover, the effect of concrete integrity by the Neem treatment was recorded after different temperature conditions, slump, weight alteration, air content, compressive strength, and chloride-ions penetration. The results suggested that the Neem treatments did not alter the concrete integrity and the physicochemical parameters. We reached a promoted long-term corrosion protection of 95% after 182 days of evaluation. Thus far, our current results open up a new promising “green” road to the conservation of carbon steel in reinforced concrete for the construction industry.