Influence of Biocorrosion on Concrete Properties

Chromkova, I; Čechmánek, René

doi:10.4028/www.scientific.net/kem.760.83

Cited by 9 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The methodology is based on experience from the previous conducted research works described already in the articles published earlier [11,12]. The base of our testing was patterned from the standard method [13] for verification of a corrosion resistance of conventional compact concrete, made with cements based on Portland clinker, in the liquid corrosive environments.…”

Section: Testing Methodologymentioning

confidence: 99%

Effect of silages on concrete and process of its corrosion in the course of time

Chromková,

Čechmánek,

Krejčí Kotlánová

2024

J. Phys.: Conf. Ser.

Self Cite

View full text Add to dashboard Cite

Silages are important juicy bulky feedstuff, that has irreplaceable role in nutrition of farm animals – cattle, pigs and horses. The silages are made of a fresh plant mass (e.g. corn, alfalfa, rape, clover or grass), that is in a chopped form in an exactly given way ensiled, i.e. in a tamped or pressed form without access of air subjected to a fermentation process. Within this process acid juices are created and enter into a construction of containers aimed for the ensilage process. These containers are mainly from a reinforced concrete. Influence of the silage on the concrete is a difficult process and it depends on several factors. From the point of view of durability/resistance to the silage effect, a concrete composition is a significant factor, the other factors are silage properties as well as time of a contact of the concrete with the silage. In this paper we describe findings on a state of 3 concrete compositions, which were repeatedly subjected to a corn silage for 3 years. In a 1-year interval, an effect of the silages on physico-mechanical properties of the concrete (e.g. strength, absorptivity, porosity) was observed. The highest resistance to effect of the silages in the course of time was proven for the concrete with a higher content of Portland cement.

show abstract

Section: Testing Methodologymentioning

confidence: 99%

Effect of silages on concrete and process of its corrosion in the course of time

Chromková,

Čechmánek,

Krejčí Kotlánová

2024

J. Phys.: Conf. Ser.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The destruction of concrete and reinforced concrete products and structures under the influence of microorganisms attracts more and more attention of scientists from the point of view of violation of structural integrity and reduction of the service life of bridge structures and various hydraulic structures [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…As a result of biocorrosion, the porosity of concrete increases [6,12,13] and diffusion processes accelerate, which contributes to the development of corrosion processes [14][15][16][17]. The reaction of biogenic acids and other products of the vital activity of microorganisms with the components of the cement stone of concrete leads to the destruction of the structure.…”

Section: Introductionmentioning

confidence: 99%

Increasing the Biostability of Concrete by the Introduction Of Additives

Rumyantseva,

Konovalova,

Narmaniya

et al. 2023

E3S Web Conf.

View full text Add to dashboard Cite

To increase the resistance to fungal corrosion and improve the performance of concrete cement stone, it is proposed to introduce calcium stearate and active metal nitrates in an amount of 0.5% by weight of cement into the cement mixture at the manufacturing stage. To determine the degree of corrosion damage of cement stone by fungal microorganisms Aspergillus niger, porosity, density, water absorption and strength were determined. It has been found that the introduction of a hydrophobic additive of calcium stearate into the cement mixture during the manufacture of concrete reduces water absorption, reduces porosity and increases strength. Additives of nitrates of active metals do not affect the characteristics of the cement stone of concrete. As a result of 6 months of fungal corrosion, the water absorption, porosity and density of cement stone containing calcium stearate did not change, and the strength decreased by 4%. Metal nitrates do not prevent damage to the cement stone by microorganisms, but slow down the flow of aggressive substances to the surface of the reinforcement in concrete. The combined introduction of calcium stearate and nitrates into the cement mixture will improve the characteristics of concrete, increase its corrosion resistance and ensure the safety of reinforcement in concrete.

show abstract

“…All over the world researchers pay great attention to the corrosion resistance and durability of building composites [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. It is known that the corrosion resistance of concrete depends on the permeability of the cement stone for liquid and gaseous agents, as well as its reactivity when exposed to them.…”

Section: Introductionmentioning

confidence: 99%

Structural Transformations of Cement Stone in Conditions of Development of the Biocenosis of a Poultry Enterprise

Строкова

Zhernovskaya

NELYUBOVA

et al. 2019

MSF

View full text Add to dashboard Cite

The results of the investigation of phase structural transformations of cement stone as a result of the influence of the aggressive environment of the poultry farm are presented. Analysis of the change in the phase composition of cement stone samples showed that according to the average content of C3S increase in the increase of degree of hydration is represented by the sequence: zone I (air medium with minimal aggression) - zone III (wet environment with maximum concentration of active substances) - zone II (air zone with periodic aggressive action). The degree of carbonization, depending on the test conditions of the samples, is characterized by a similar zonal dependence. In this case, the removal of CaO during the acid leaching of the peripheral regions of the samples was detected to a greater extent during testing in zones II and III.

show abstract

Influence of Biocorrosion on Concrete Properties

Cited by 9 publications

References 1 publication

Effect of silages on concrete and process of its corrosion in the course of time

Effect of silages on concrete and process of its corrosion in the course of time

Increasing the Biostability of Concrete by the Introduction Of Additives

Structural Transformations of Cement Stone in Conditions of Development of the Biocenosis of a Poultry Enterprise

Contact Info

Product

Resources

About