Research into the effectiveness of grounded screens of electroconductive silicate compositions for electrocorrosion protection

Plugin, Dmytro; Kasyanov, Vladimir; Konev, Vitalii; Nesterenko, S. V.; Afanasiev, Aleksander

doi:10.1051/matecconf/201711601012

Cited by 3 publications

(3 citation statements)

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“…However, such composites have insufficient water resistance (softening coefficient), no more than 0.2, and it was proposed in [1,3,21] to increase it via the introduction of ground basic blast-furnace granulated slag instead of part or all of sodium fluorosilicate. By analogy with slag-alkali binders [22,23], the interaction of its silicate and aluminate minerals and glass with sodium silicate causes the formation of a certain amount of zeolite-like calcium, alkali and alkaline earth aluminosilicates, which provide an increase in water resistance.…”

Section: Theoretical Justifications For the Development Of The Compos...mentioning

confidence: 99%

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Electrically Conductive Silicate Composite for Protection against Electrocorrosion

et al. 2023

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This article presents the results of a study on the development of an anti-corrosion plaster composite based on water glass with increased electrical conductivity. Known acid-resistant quartz-fluorosilicate composites containing liquid sodium silicate, sodium fluorosilicate and acid-resistant high-silica filler in the form of quartz, andesite or diabase powder were chosen as the prototype. The low water resistance and low adhesion to Portland cement concrete of these composites limits their application. By adding granulated blast-furnace slag to the composite, it was possible to increase the water resistance of the solution and its adhesion to concrete. The addition of graphite filler to the composite made it possible to increase the electrical conductivity. This made it possible to obtain not only a corrosion-resistant (to chemical and physico-chemical corrosion) composite, but also to use it as a grounded protective screen to drain leakage currents from the structure, thus protecting it from both corrosion and electrocorrosion destruction.

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Section: Theoretical Justifications For the Development Of The Compos...mentioning

confidence: 99%

“…However, metals are expensive, and devices made of them quickly corrode themselves, instead of the structure. It is promising to develop electrically conductive composites based on mineral binders for the development of electrocorrosion protection devices using plastering and painting methods [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Electrically Conductive Silicate Composite for Protection against Electrocorrosion

et al. 2023

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“…Concrete has a relatively high electrical resistance, but in a water-saturated state its conductivity can increase significantly because liquid in concrete capillaries is the electrolyte [3]. The main measures to fight the electric corrosion of reinforced concrete are to reduce leakage currents, to use electric protection of structures, to apply insulating coatings and improve the electrical resistance of reinforced concrete itself [3,23].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improving the resistance of concrete for sleepers to the formation of delayed and secondary ettringite, the alkali-silica reaction, and electric corrosion

Troyan

Sova²

2019

EEJET

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Представлено результати дослiдження впливу добавок модифiкаторiв на корозiйну стiйкiсть бетону для залiзобе тонних шпал за критерiями електричного опору, стiйко стi до лужної корозiї та корозiї внаслiдок кристалiзацiї запiзнiлого та вторинного еттрингiту. Наведенi дослiджен ня було виконано в рамках вирiшення проблеми передчасно го руйнування залiзобетонних шпал, внаслiдок прогресуючо го трiщиноутворення на стадiї термообробки та подальшої експлуатацiї. Встановлено, що введення до складу бето ну шпал пуцоланових добавок, що мiстять в своєму складi активний Al 2 O 3 , дозволяє мiнiмiзувати ризик корозiї, що обумовлена реакцiєю кремнезему заповнювачiв з лугами та корозiї внаслiдок кристалiзацiї запiзнiлого та вторинно го еттрингiту. Висока ефективнiсть щодо названих видiв корозiї пуцоланових добавок, якi вмiщують активний Al 2 O 3 , пояснюється зв'язуванням лугiв в нерозчиннi лужнi гiдроалю мосилiкати, що сприяють ущiльненню системи зi зниженням вмiсту iонiв Na + /K + в розчинi. Зниження вмiсту в поровому розчинi лугiв обумовлює блокування реакцiї «луг-кремнiєва кислота» та пiдвищення температури стабiльностi еттрiн гiту до бiльш високих значень. Це знижує потенцiйну кiль кiсть циклiв утворення вторинного еттрiнгiту та iмовiр нiсть утворення запiзнiлого еттрiнгiту. Альтернативний механiзм дiї активного Al 2 O 3 пуцолан полягає у зв'язуван нi iонiв SO 4 2та Ca 2+ з порового розчину у низкосульфатнi форми гiдросульфоалюмiнатiв кальцiю, що виключає крис талiзацiю запiзнiлого та вторинного еттрiнгiту. Зниження витрати цементу та води за рахунок викори стання добавокпластифiкаторiв дозволяє пiдвищити пито мий електричний опiр модифiкованого бетону шпал вище рiвня контрольного складу без добавок. Одержанi результа ти надають можливiсть забезпечення проектної довговiч ностi бетону залiзобетонних шпал шляхом їх комплексної модифiкацiї пластифiкаторами та активними мiнеральни ми добавками, що мiстять активний Al 2 O 3 Ключовi слова: реакцiя «луг-кремнiєва кислота», за пiзнiлий еттрингiт, вторинний еттрiнгiт, електричний опiр, метакаолiн, зола виносу, мiкрокремнезем, пластифiкатор

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Polymer-cement mortar for protection of buildings against electrical influences

Pluhin

Plugin

Nesterenko³

et al. 2019

IOP Conf. Ser.: Mater. Sci. Eng.

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In recent decades, the number of sudden structural failures of buildings and structures being in operation and under construction has increased in the world. Generally, most of the experts associate these failures with the following reasons: design errors; errors and violations made during construction; and poor maintenance. In our opinion, another reason for the sudden structural failure of buildings and structures and the characteristic of the areas where they occur is the periodic accumulation and alteration of excess negative electric charge and the electric field of the Earth in crust fractures zones, near artificial sources of electricity, DC powered transport, rivers and large water reservoirs. To protect buildings and structures in hazardous excess negative charge areas, a polymer-modified mortar was developed based on carbamide resin cured with chlorine iron, with the addition of a superplasticizer and fly ash from thermal power plants. Theoretical, experimental and practical results of the study are provided.

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Research into the effectiveness of grounded screens of electroconductive silicate compositions for electrocorrosion protection

Cited by 3 publications

References 1 publication

Electrically Conductive Silicate Composite for Protection against Electrocorrosion

Electrically Conductive Silicate Composite for Protection against Electrocorrosion

Improving the resistance of concrete for sleepers to the formation of delayed and secondary ettringite, the alkali-silica reaction, and electric corrosion

Polymer-cement mortar for protection of buildings against electrical influences

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