Study on the applicability of bactericides to prevent concrete microbial corrosion

Kong, Lijuan; Zhang, Bei; Fang, Jun

doi:10.1016/j.conbuildmat.2017.05.108

Cited by 33 publications

(29 citation statements)

References 15 publications

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“…Based on a search in Scopus database, there is a lack of literature on the activity of C-S-H seeds on reference microorganisms. These small life forms are interacting with cementitious composite often leading to their deterioration (Kong et al 2017). However, in some cases, microbial activity may be used for crack healing or the biocementation process in order to produce new composites (Abo-El-Enein et al 2019).…”

Section: Introductionmentioning

confidence: 99%

The effects of calcium–silicate–hydrate (C–S–H) seeds on reference microorganisms

et al. 2020

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Building materials are constantly improved with various additives and admixtures in order to achieve goals ranging from obtaining increased durability or antimicrobial activity up to reducing the carbon footprint left by the cement production. Since nanomaterials were proposed for cement products, many studies explored the possibilities for their incorporation. One of the novel trends in studying these materials is evaluating their impact on living organisms, with the focus not only on toxicology but also on the application potential. Therefore, in this study, we investigated the effects of three types of calciumsilicate-hydrate (C-S-H) seeds on reference microorganisms in the scope of their basic physiology and primary metabolism. Shape, size and elemental composition of C-S-H seeds were also evaluated. The tests on the reference microorganisms have shown that the reaction to these nanomaterials can be specific and depends on the strain as well as the type of used nanomaterial. Furthermore, the presence of C-S-H seeds in the growth environment led to metabolic stimulation that resulted in faster growth, higher biochemical activity, and increased biofilm formation. Based on our findings, we conclude that even though C-S-H seeds have antimicrobial potential, they can be potentially used to promote the growth of selected microbial strains. This phenomenon could be further investigated towards the formation of beneficial biofilms on building materials.

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Section: Introductionmentioning

confidence: 99%

The effects of calcium–silicate–hydrate (C–S–H) seeds on reference microorganisms

et al. 2020

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“…However, many non-intrusive methods are commonly applied, like ultrasonic [27], potential measurements, radiography, eddy current, magnetic particle inspection [28] and acoustic emission [29]. Ultrasonic allows to control thickness by using sonic waves with high frequency (1)(2)(3)(4)(5)(6). The method can be used for liquids and solids but not for gases [28].…”

Section: Monitoring Of Corrosionmentioning

confidence: 99%

Organic Corrosion Inhibitors

Brycki¹,

Kowalczyk²,

Szulc³

et al. 2018

Corrosion Inhibitors, Principles and Recent Applications

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Organic corrosion inhibitors are one of the five ways, besides material selection, design, cathodic protection and coatings, to protect materials against corrosion. Corrosion is an ubiquitous phenomena that deteriorates all materials, metals, plastics, glass and concrete. The costs of corrosion are tremendous and amounts to 4.0% of gross domestic product (GDP) in USA. The similar losses of GDP are noted in all countries around the world. At this point of time, there is no way to completely stop the corrosion processes. Some new solutions can only slow this process. Organic corrosion inhibitors are widely used in industry because of their effectiveness at wide range of temperatures, compatibility with protected materials, good solubility in water, low costs and relatively low toxicity. Organic corrosion inhibitors adsorb on the surface to form protective film which displace water and protect it against deteriorating. Effective organic corrosion inhibitors contain nitrogen, oxygen, sulfur and phosphorus with lone electron pairs as well can contain structural moieties with π-electrons that interact with metal favoring the adsorption process. This review presents mechanisms and monitoring of corrosion, laboratory methods for corrosion study, relationship between structure and efficacy of corrosion inhibitions, theoretical approach to design new inhibitors and some aspects of biocorrosion.

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“…Several strategies have been proposed to prevent or slow down the degradation due to MICC. These strategies include improving the hydraulic design and ventilation of wastewater networks, enhancing concrete resistance to sulfuric acid, use of supplementary cementitious materials, geopolymers, calcium aluminate cements and colloidal silica, using polymeric liners and other coating techniques, biocide addition to wastewater to reduce the activities of SRB, and preventing the growth of SOB using antimicrobial additives for concrete as admixed or topical treatment [13,[20][21][22][23][24][25][26][27][28]. Each prevention strategy has benefits and potential costs.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the efficacy of antimicrobial additives against biogenic acidification in simulated wastewater exposure solutions

2019

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Microbially Induced Corrosion of Concrete (MICC) is a progressive three-stage deterioration process that is primarily associated with sulfur-oxidizing bacteria (SOB). One strategy for mitigating MICC is the use of antimicrobial additives. It is hypothesized that the performance of antimicrobial products is influenced by the pH of the environment, the bacterial population, and the level of bacterial activity. To test this hypothesis, three bacterial activity-population levels were tested in environments with different pH levels to evaluate the efficacy of a typical antimicrobial product against planktonic SOB. The ability of the antimicrobial product to prevent or delay the biogenic acidification was considered as the criterion for its efficacy. The tested antimicrobial product was successful in delaying or preventing MICC with low and moderate bacterial populations and activity for all pH levels greater than 4. Lower pH levels were not tested in this investigation. Antimicrobial products were successful in delaying or preventing MICC with severe bacterial populations and activity for all pH levels tested greater than 6. The results support the main hypothesis of the research; therefore, the selection of whether to utilize an antimicrobial product requires an understanding of the operational pH of the environment as well as knowledge on the target bacterial population and activity.

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Study on the applicability of bactericides to prevent concrete microbial corrosion

Cited by 33 publications

References 15 publications

The effects of calcium–silicate–hydrate (C–S–H) seeds on reference microorganisms

The effects of calcium–silicate–hydrate (C–S–H) seeds on reference microorganisms

Organic Corrosion Inhibitors

Evaluating the efficacy of antimicrobial additives against biogenic acidification in simulated wastewater exposure solutions

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