Effect of agents of organic origin on concrete degradation

Chromkova, I; Čechmánek, René

doi:10.1088/1757-899x/379/1/012040

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…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.

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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.

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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.

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“…The damage index is calculated based on the loading situation, crack width, and crack length [34,35]. The deterioration of bridge in terms of spalling and chemical attack is also considered for damage analysis [36,37].…”

Section: Damage Quantificationmentioning

confidence: 99%

RCC Structural Deformation and Damage Quantification Using Unmanned Aerial Vehicle Image Correlation Technique

et al. 2022

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Reinforced cement concrete (RCC) is universally acknowledged as a low-cost, rigid, and high-strength construction material. Major structures like buildings, bridges, dams, etc., are made of RCC and subjected to repetitive loading during their service life for which structural performance deteriorates with time. Bridges and high-rise structures, being above ground level, are hard to equip with the contact mechanical methods to inspect strains and displacements for structural health monitoring (SHM). A non-contact, optical and computer vision based full field measuring technique called digital image correlation (DIC) technique was developed in the recent past to specifically evaluate bridge decks. Generally, optical images of structure in field conditions are not acquired precisely perpendicular to the object, which instinctively affects the deformation results obtained during loading conditions. An unmanned aerial vehicle (UAV) equipped with DIC vision-based technique acts as a rapid and cost-effective tool to quantify the serviceability of bridges by measuring strains and displacements at inaccessible locations. In this study, a non-contact unmanned aerial vehicle image correlation (UAVIC) technique is used on a scaled bridge girder and a contact method of measuring deformations with a dial gauge. Both investigations are correlated for accuracy assessment, and it is understood that results in laboratory conditions are 90% accurate. Similarly, the UAVIC technique is also performed on a rail over the bridge in the field conditions to understand the feasibility of the proposed method and evaluate damage quantification of it.

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Acidic corrosion-abrasion resistance of concrete containing fly ash and silica fume for use as concrete floors in pig farm

Nochaiya

Suriwong

Julphunthong

2022

Case Studies in Construction Materials

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Effect of agents of organic origin on concrete degradation

Cited by 3 publications

References 3 publications

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

RCC Structural Deformation and Damage Quantification Using Unmanned Aerial Vehicle Image Correlation Technique

Acidic corrosion-abrasion resistance of concrete containing fly ash and silica fume for use as concrete floors in pig farm

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