Comparison of soil properties measurements in pipeline corrosion estimation

Marušić, Katarina; Kekez, Krešimir; Martinez, Sanja

doi:10.1002/maco.201810768

Cited by 7 publications

(7 citation statements)

References 21 publications

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“…According to Table 2, the pH values from both soils were slightly acid, but within a range (5–8), where pH is not a significant variable influencing corrosion rates, [ 22 ] while the chloride concentration was more significant for the industrial soil. Chloride ions play a major role in anodic dissolution of corrosion products as evaluated by Su et al, [ 23 ] who ranked temperature > [Cl − ] > [SO 4 2− ] > [HCO 4 − ] > pH, as the most critical factors influencing soil aggressiveness, in a sense that greater temperatures and ion concentrations induce greater corrosion rates, while greater pH values induce lower corrosion rates.…”

Section: Resultsmentioning

confidence: 99%

Long‐term cathodic disbondment tests in three‐layer polyethylene coatings

Freitas

Brasil

Leoni

et al. 2023

Materials & Corrosion

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Cathodic protection allied to a polymeric coating is one of the most employed techniques to protect buried steel pipelines against corrosion. Nevertheless, cathodic disbondment, a phenomenon associated with such protection in highperformance coatings such as (three-layer polyethylene [3LPE]), still concerns the oil and gas segment regarding pipeline integrity. The present work was part of a Program of Integrity Management and studied in field-like conditions the influence of cathodic potential, type of soil and coating system on the coating disbondment of buried pipelines for 450 days. The coating systems herein studied simulated the patching between aged (coal tar) and new coatings (3LPE), a standard procedure during damaged pipeline repair. Results pointed out that the combination between aged (coal tar) and new coatings (3LPE) in a pipe segment reduced coating disbondment when compared to the systems where 3LPE was the sole type of coating. Moreover, it was shown that more cathodic potentials (<−1100 mV) and the aggressiveness of the industrial soil herein tested induced disbondment diameters as high as 15.5 mm.

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Section: Resultsmentioning

confidence: 99%

Long‐term cathodic disbondment tests in three‐layer polyethylene coatings

Freitas

Brasil

Leoni

et al. 2023

Materials & Corrosion

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“…Liu and Cheng (2018) found that the corrosion rate of steel increased with the moisture content of the soil due to the increased conductivity [19]. Marusic et al (2018) stated that corrosion in soils resembles atmospheric corrosion with corrosion rates usually higher and depending on the soil type [22]. In the next research, Wasim and Shoaib (2019) revealed that varying moisture and chloride contents can cause corrosion problems [35].…”

Section: The Effect Of Soil Engineering Properties On Corrosion (Litementioning

confidence: 97%

Relationship Between Soil Engineering Properties and Corrosion Rate in Andesitic Volcanic Soils, West Lampung, Sumatra, Indonesia

et al. 2020

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Soil is the most diverse environment that can cause metal corrosion. Many researchers claim that soil is a corrosive environment that has complexity compared to other environments. With a background knowledge of soil engineering properties in a specific area and their effects on the metal corrosion process then corrosion problems can be prevented. This paper presents the relationship between andesitic volcanic soil engineering properties with an average corrosion rate based on geotechnical and statistical methods. In this paper, we propose a new average corrosion rate per year on that soil. The study area took place on the Sekincau-Way Tenong Transect Road, West Lampung, Sumatra, Indonesia. This area was composed of silty clay to clayey silt soils which weathering products from andesitic-basaltic volcanic breccia. This soil can store water that is moderate to high and has high plastic properties. Based on the statistical approach, it can be concluded that the corrosion rate in andesitic volcanic soils is 1.132 mm/yr. Soil engineering properties (water content, index plasticity, and clay content) simultaneously affect the average corrosion rate. The effective contribution of each independent variable (soil engineering properties) to the corrosion rate is a plasticity index of 39.5%, the water content of 24.79%, and clay content of 26.04%. Index plasticity and water content were found to raise the average corrosion rate at the soil samples, while clay content was on the side that lowered the average corrosion rate.

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“…Soil that has high resistivity means low conductivity and belongs to less corrosive to the buried structures. Soil resistivity is affected by moisture content, soil type, bulk density [41,42].…”

Section: Studying Soil Resistivitymentioning

confidence: 99%

Investigation of Soil Physicochemical Effects on the Corrosion of Buried Iron Pipes

Jiru¹,

Tolcha

Yeshanew

2021

J. Basic Appl. Sci.

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Soil corrosivity was an active problem of water pipeline damaged by corrosion that affects the performance of pipe manufacturers. In Addis ababa, groundwater pipelines were facing breakage and like due to corrosion damage of the pipes. The population of nearly four million were facing a shortage of clean and continuous water supply. Maintenace and replacing old pipes with new ones increased additional cost and delay of water supply for the city. For this investigation of corrosion, causes were conducted which soil property is the one factor. Investigation of soil corrosivity for a given specific location before installation is important to design robust pipes that can serve for long life. Soil physicochemical behaviors of the soil parameters were pH, moisture content, and electrical resistivity for any type of soil. In addition, soil bulk density, total nitrogen, soil texture, and electrical conductivity were also the main factors to be studied. The laboratory result indicated that pH of 6.98-7.04, moisture content of 23.7-37.5%, and electrical conductivity of 0.105-313 ds/m were observed. Total nitrogen was small as 0.06-0.10 for a type of soil were class and loam soils. From the analysis of eight soil samples taken from different cities. The results show that the corrosivity behavior of buried iron pipes in the capital city of Ethiopia was moderately corrosive. As confirmed from various soil samples tested from corroded pipes at different depths of 40, 80, and 120 cm. The influence of soil corrosiveness factors initiates pits formation and propagates its width and depth on the surface of pipes.

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Comparison of soil properties measurements in pipeline corrosion estimation

Cited by 7 publications

References 21 publications

Long‐term cathodic disbondment tests in three‐layer polyethylene coatings

Long‐term cathodic disbondment tests in three‐layer polyethylene coatings

Relationship Between Soil Engineering Properties and Corrosion Rate in Andesitic Volcanic Soils, West Lampung, Sumatra, Indonesia

Investigation of Soil Physicochemical Effects on the Corrosion of Buried Iron Pipes

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