Article | 28-August-2018
This paper is focused on the problem of forecasting damage in reinforced concrete specimens as the consequence of chloride corrosion. The performed numerical calculations included time necessary for filling empty pore space and tightening corrosion products in the interfacial transition zone (ITZ) . In those calculations we assumed the formation of distortional strains in the ITZ layer caused by mass increase of corrosion products dependent on corrosion current intensity.
Faustyn RECHA,
Tomasz JAŚNIOK,
Tomasz KRYKOWSKI
Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 4, 107–113
Research Article | 08-February-2019
Abstract
The problem of corrosion of sanitary sewer concrete concerns the elements located just behind the expansion well. Evolving odorogenic substances and bioaerosols spread in the sewage system, cause in adverse conditions both chemical and biological corrosion of concrete. The paper presents the results of tests of samples taken from the top concrete circle and from a corroded cast iron hatch of 7 years old manhole located below the expansion well. Well elements were subjected to a strong
Bożena GIL,
Barbara SŁOMKA-SŁUPIK,
Katarzyna KOWALSKA,
Karol JASIŃSKI
Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 4, 93–104
Article | 28-August-2018
Replacing part of the cement in the concrete with fly ash - products of solid fuel burning, requires testing, including the degree of the reinforcement protection against corrosion provided by concrete. The paper presents a comparison of the results of the tests of the effectiveness of corrosion protection of reinforced concrete with the addition of calcareous fly ash. Tests were conducted by two electrochemical methods. Results obtained by potentiostatic measurement on reinforcement inserts
Katarzyna DOMAGAŁA,
Andrzej ŚLIWKA
Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 3, 109–115
research-article | 30-November-2019
Many major cities such as Sydney have extensive networks of water supply pipelines, including major trunk lines that are ageing and increasingly prone to failure. Many of these pipes are made of cast iron. This material is traditional and has been shown to have excellent long-term durability, with many pipes surviving well past 100 years. Others, however, fail much earlier, and often this is through corrosion of the external surfaces of pipes. Such corrosion usually leads to weakening of pipe
David Bretreger,
In-Young Yeo,
Robert Melchers
International Journal on Smart Sensing and Intelligent Systems, Volume 13 , ISSUE 1, 1–7
Article | 28-August-2018
One of the products of concrete sulphate corrosion, besides gypsum and ettringite, is thaumasite. The thaumasite is a very dangerous, non binding crystalline phase, which is forming at the expense of C-S-H phase. There was a conviction that the conditions required for the formation of thaumasite in concrete are: source of calcium silicate, sulfate ions, carbonate ions and a very wet, cold (below 15°C) environment. The corrosion of concrete caused by the external source of sulphate ions during
Barbara SŁOMKA-SŁUPIK,
Adam ZYBURA
Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 3, 73–80
Article | 03-November-2017
This paper describes a design for RFID (Radio Frequency Identification) tag using license plate attached the vehicle bumper in 900 MHz band. The implemented metal tag for a license plate is applied metal shielding method, watertight method of RFID tag, and metal corrosion protection method using silk screen technique. Moreover, its range of the fabricated tag antenna that the license plate and the vehicle bumper were fixed by volt and nut was observed 8.2m. This measured readable range showed
Gi-Hyun Hwang,
Kyoung-Hwan Cha,
Sachin Bhardwaj,
Dae-Seok Lee
International Journal on Smart Sensing and Intelligent Systems, Volume 2 , ISSUE 4, 549–563
Article | 28-August-2018
improve fresh concrete properties, density and corrosion resistance of concrete. The chemical reasons of such effect were explained by the means of x-ray diffraction, differential thermogravimetry and scanning electron microscopy. This development should be widely used in several projects in Ukraine, where sulphate-resistant concrete is needed.
Artem PRYYMACHENKO,
Leonid SHEINICH
Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 4, 101–106
research-article | 21-July-2020
networks clearly shows that approximately 80–90% of accidents are caused by structural deterioration due to biogenic corrosion. Chemical reactions occurring in the free space of a sewer network form an aggressive environment with respect to its structures. The dynamics of occurence of emergencies at sewer facilities in Eastern Europe shows the following.
Over the last 5 years, the number of emergencies in the wastewater disposal networks, which were laid in the 80–90s of the last century, is almost 5
Olha STARKOVA,
Alevtyna ALEINIKOVA,
Dmitro BONDARENKO
Architecture, Civil Engineering, Environment, Volume 13 , ISSUE 2, 65–73
Article | 30-July-2021
Background: Titanium alloy mini-implants have become popular in recent times and have been extensively used and studied. Although corrosion resistance of orthodontic materials has always been of concern, this property has been the least explored. The present study aimed to assess the composition, surface characterisation and corrosion resistance of five commercially available mini-implants by assaying ion release in artificial saliva. Methods: Ten mini-implants each from five companies were
Venkateswaran Ananthanarayanan,
Sridevi Padmanabhan,
Arun B. Chitharanjan
Australasian Orthodontic Journal, Volume 32 , ISSUE 2, 165–174
Article | 01-September-2012
) corrosion and (iii) excessive wear. The features of the PSD values of vibration signals were extracted using statistical and vibration parameters. The extracted features were used as inputs to the KNN and SVM for three-class identification. The roles of PSD technique and the KNN and SVM classifiers were investigated. Results showed that the accuracy rate of fault diagnosis was 100%. Also, the results demonstrated that the combined PSD-SVM model had the potential for fault diagnosis of engine journal
A. Moosavian,
H. Ahmadi,
A. Tabatabaeefar,
B. Sakhaei
International Journal on Smart Sensing and Intelligent Systems, Volume 5 , ISSUE 3, 685–700
Article | 16-December-2013
Impressed Current Cathodic Protection (ICCP) system is the most practical method of cathodic protection systems. This system is widely used to prevent the external corrosion of carbon steel structures; especially those are used in underground oil and gas pipelines. In this paper, the theoretical background, principles and concepts of ICCP systems have been discussed. An effective laboratory scale for ICCP systems was built according to specific concepts has been clarified. Consequently,the
EzzEldin Balla,
MohdFua’ad Rahmat
International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 5, 2055–2074
Article | 24-March-2018
The problem of monolithic behavior of a metal pipe and fiberglass safety cage has been considered in the article. The prestressed case does not only decrease the deformability of a pipe on-load but it also protects metal from corrosion. The ability to withstand the arising stresses has been investigated for both strip fiberglass reinforcement and the whole construction. It has been shown that the deformability of fiberglass depends on the kind of binder. The maximum strength value has been
Liudmyla TRYKOZ,
Svetlana KAMCHATNAYA,
Oksana PUSTOVOITOVA,
Armen ATYNIAN
Transport Problems, Volume 13 , ISSUE 1, 69–79
research-article | 30-November-2018
flowing tree trunks hitting them during floods. The uncovered rebars underwent corrosion in this spots (Fig. 7). Interestingly, the transverse expansion joints of the individual pipes showed no leaks from above (Fig. 8), which proves that the Gliwice Canal bed insulation was perfectly performed and is still effective (according to [13], the canal bottom section above the siphon was sealed with a loam layer, while the structure itself was insulated with bituminous materials; according to [15], full
Jacek HULIMKA,
Marta KAŁUŻA
Architecture, Civil Engineering, Environment, Volume 12 , ISSUE 3, 93–104
Article | 28-August-2018
The solution of using glass fiber reinforced polymer (GFRP) bars, as reinforcement in concrete structures to overcome the problems created by steel corrosion, is now widely accepted because of both its non-corrosive nature and good results shown by large investigation efforts. In this paper twenty tests had been conducted on reinforced concrete wall specimens of (800 mm height x 450 mm width x 50 or 70 mm thickness effective dimensions). Four specimens were reinforced with steel bars to be
Yaarub Gatia ABTAN,
Hassan Falah HASSAN
Architecture, Civil Engineering, Environment, Volume 10 , ISSUE 2, 55–63
Research Article | 22-May-2019
the quality of stored gas or disruption of its transmission. The paper presents a variety of microbiomes of the underground storage facilities and pipelines, showing that not only the sulfate-reducing bacteria are able to grow and develop in these extreme environments. Microorganisms producing CH4 may change the composition of the gas, and the produced H2S and CO2 are not only gas pollutants, but also generate corrosion of transmission networks. At the same time, the presence of bacteria and
Agnieszka Staniszewska,
Alin Kunicka-Styczyńska,
Krzysztof Ziemiński
Postępy Mikrobiologii - Advancements of Microbiology, Volume 56 , ISSUE 4, 381–388
research-article | 30-November-2019
pipelines [7]. In addition, it contributes to the phenomenon of condensation, which leads to the formation of so-called corks and erosion, increasing the volume and decreasing the calorific value of gas. In addition, liquid water accelerates the corrosion process and makes it difficult to measure the flow rate, especially when the gas contains carbon dioxide and/or hydrogen sulphide. For the above reasons, it is necessary to dehumidify the gas before transportation or processing [8, 9].
The paper
Natalia GENEROWICZ
Architecture, Civil Engineering, Environment, Volume 13 , ISSUE 3, 73–83
Article | 24-June-2021
greater heat-resistance and anti-corrosion properties, as well as high wear resistance in addition to the aforementioned hardness, which increases by as much as 15% for the AlSi9Cu4 alloy compared with the alloy after standard heat treatment. Such an increase in the values of the mechanical properties makes it possible to use the investigated alloy in applications including, e.g., recyclable thermally exposed surfaces, such as pistons in internal combustion engines, which enables further decrease in
Jarosław KONIECZNY,
Krzysztof LABISZ
Transport Problems, Volume 16 , ISSUE 2, 5–18
Article | 20-July-2021
) demonstrated intermediate HM values. The ORT (wing) (101 ± 6 GPa) displayed the highest EIT while NiTi wire (24 ± 5) showed the lowest. The latter had the highest elastic index (59 ± 5%) with MIN (base)(15 ± 3) possessing the lowest. The potential difference for all bracket wire combinations was found below the threshold for the initiation of galvanic corrosion (200 mV) apart from MIN coupled with NiTi wire in the NaF solution. Conclusions: The mechanical properties of Ni-free
Géraldine Kummer,
Georgios Polychronis,
Spiros Zinelis,
Theodore Eliades
Australasian Orthodontic Journal, Volume 35 , ISSUE 1, 53–60
research-article | 30-November-2017
1.
INTRODUCTION
Steel reinforced concrete (RC) is one of the most widely used structural materials in construction. Nevertheless, it is well known that, under certain environmental conditions the corrosion of steel reinforcement can lead to the deterioration or even to the collapse of structural RC elements, requesting expensive repairing and strengthening. This detrimental property of the steel reinforcement directed the interest to alternative reinforcing materials [1–7].
Using FRP material
Sandor SOLYOM,
Matteo DI BENEDETTI,
Anna SZIJÁRTÓ,
György L. BALÁZS
Architecture, Civil Engineering, Environment, Volume 11 , ISSUE 2, 79–88