abrasive effects observed in concrete hydraulic surfaces

Abrasive Effects Observed in Concrete Hydraulic Surfaces ...

This chapter presents the main abrasive effects observed in concrete hydraulic surfaces of dams of hydroelectric power plant (HPP). These types of hydraulic structures are subject to solicitations for dynamics order due to water flow at high speed usually causing to erosion, cavitation and abrasion.

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Abrasive Effects Observed in Concrete Hydraulic Surfaces ...

Mar 16, 2012  Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and Application of Repair Materials. By José Carlos Alves Galvão, Kleber Franke Portella and Aline Christiane Morales Kormann. Submitted: February 23rd 2011 Reviewed: September 15th 2011 Published: March 16th 2012. DOI: 10.5772/27964

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Abrasive Effects Observed in Concrete Hydraulic Surfaces ...

Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and Application of Repair Materials By José Carlos Alves Galvão, Kleber Franke Portella and

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Abrasive Effects Observed in Concrete Hydraulic Surfaces ...

Related papers. Page number / 19 19

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Abrasion on Concrete Surfaces Caused by Hydraulic Loading ...

concrete surfaces. Under the impacts of water flow, the concrete surfaces suffer inevitably from abrasive erosion. This is particularly problematic for ageing structures under the impacts of flowing water with suspended sediment in high concentrations. Severe abrasion can cause

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Hydro-abrasive erosion of steel-fibre reinforced hydraulic ...

Oct 01, 2002  Abstract. In this paper, hydro-abrasive erosion tests on plain concrete (PC) and on steel-fibre reinforced concrete (FRC) are performed, and the erosion behaviour of the materials for different erosion conditions is investigated. Effects of suspension velocity, impact angle and solid content have been studied in detail.

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Testing of Concrete Abrasion Resistance in Hydraulic ...

The term abrasion in hydraulic structures is used for the process of disintegration of exposed concrete surfaces, resulting from loads arising from sediment transport [1] and [2]. The rate of disintegration of the concrete surface largely depends on the transport capacity of water and the ways of transport of solid matter [3] and [4].

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Abrasive Effects Observed in Concrete Hydraulic Surfaces ...

Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and Application of Repair Materials By José Carlos Alves Galvão, Kleber Franke Portella and

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Abrasive Effects Observed in Concrete Hydraulic Surfaces ...

Related papers. Page number / 19 19

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Abrasion on Concrete Surfaces Caused by Hydraulic

concrete surfaces. Under the impacts of water flow, the concrete surfaces suffer inevitably from abrasive erosion. This is particularly problematic for ageing structures under the impacts of flowing water with suspended sediment in high concentrations. Severe abrasion can cause

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FROST-INDUCED DETERIORATION OF CONCRETE IN

may also cause abrasive wear some structures.to Progressive deterioration of the concrete surface occurs at the waterline of many hydraulic structures. Despite the fact that these structures are exposed to fresh water, the damage is similar in appearance to salt scaling of concrete. Surface deterioration results in exposure of

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Erosion Mechanisms of Hydraulic Concretes under High-Speed ...

The erosion behaviors of a hydraulic concrete under high-speed abrasive waterjets at different impact angles were investigated in this paper. The worn surfaces were observed by a scanning electron microscope (SEM). It was found that the defects in the matrix are often the nucleation sites of the microcracks during the erosion. The erosion mechanisms of hydraulic concrete at different impact ...

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Investigation on abrasive wear of concrete containing hematite

surfaces that are in mechanical contact and slide against each other 7. Abrasive wear is known to occur in pavements like floor and concrete highway by foot and vehicular traffic, hydraulic structures and other surfaces upon which friction forces are applied due to relative motion between the surfaces

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Investigation of steel fiber effects on concrete abrasion ...

Concrete surfaces under different environmental conditions are generally subjected to significant abrasion due to friction, heavy object movement, and abrasive material. In coastal structures, water acts as the abrasive Investigation of steel fiber effects on concrete abrasion resistance

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Abrasion Resistance of Materials IntechOpen

Mar 16, 2012  2. Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and Application of Repair Materials. By José Carlos Alves Galvão, Kleber Franke Portella and Aline Christiane Morales Kormann. 4843: Open access peer-reviewed. 3. Abrasion Resistance of High Performance Fabrics. By Maja Somogyi Škoc and Emira Pezelj. 7146: Open access peer ...

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erosion Publications - Geotechpedia

This chapter presents the main abrasive effects observed in concrete hydraulic surfaces of dams of hydroelectric power plant (HPP). These types of hydraulic structures are subject to solicitations for dynamics order due to water flow at high speed usually ...

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英文书籍一本Abrasion Resistance of Materials - 金属 - 小木虫 -

Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and Application of Repair Materials by José Carlos Alves Galvão, Kleber Franke Portella and Aline Christiane Morales Kormann Abrasion Resistance of High Performance Fabrics by Maja Somogyi Škoc and Emira Pezelj Numerical Simulation of Abrasion of Particles

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ABRASION RESISTANCE OF CONCRETE AND THE USE OF

ABRASION RESISTANCE OF CONCRETE AND THE USE OF HIGH PERFORMANCE CONCRETE FOR CONCRETE RAILWAY CROSSTIES BY ... Due to certain durability problems, however, the observed service life of concrete ties has been significantly shortened and greater maintenance has been required than anticipated. ... abrasion and hydraulic pressure cracking at rail seat,

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Hydro-abrasive resistance and mechanical properties of ...

concrete with high durability properties in service conditions. The abrasive wear of concrete in hydraulic structures is most often caused by the action of water-borne particles (silt, sand, gravel and other solid particles), which erode concrete surface through hydraulic processes. This abrasive-erosive concrete damage is

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Hydro-abrasive erosion of high performance fiber ...

Jun 15, 2009  However, the mechanism of deterioration of the concrete surface is different in both cases. The results of investigations of the abrasive wear of the high performance concretes reinforced with the typical steel fibers used in the concrete hydraulic structures and with polypropylene fibers have been presented in the paper.

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Book Publications - Geotechpedia

This chapter presents the main abrasive effects observed in concrete hydraulic surfaces of dams of hydroelectric power plant (HPP). These types of hydraulic structures are subject to solicitations for dynamics order due to water flow at high speed usually ...

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Abrasion on Concrete Surfaces Caused by Hydraulic

concrete surfaces. Under the impacts of water flow, the concrete surfaces suffer inevitably from abrasive erosion. This is particularly problematic for ageing structures under the impacts of flowing water with suspended sediment in high concentrations. Severe abrasion can cause

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Investigation of the Impact of Abrasion as a Concrete ...

include abrasion, crushing, freeze-thaw cracking, hydraulic-pressure cracking, and hydro-abrasive erosion (2, 3, 4). Each of the mechanisms is briefly introduced below. Abrasion is defined as the wear of particles on the rail seat surface as frictional forces act between the rail pad and the concrete rail seat, which move relative to one

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New Test Method for Concrete Resistance on Abrasive Erosion

1.Introduction . Abrasive erosion of concrete in hydraulic structures is mainly caused by rubble dragged by flowing water. Damages of concrete structures caused by the abrasion process are very severe and indicate the necessity of taking into account the influence of this process while designing concrete mixtures and building constructions.

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Hydro-abrasive resistance and mechanical properties of ...

concrete with high durability properties in service conditions. The abrasive wear of concrete in hydraulic structures is most often caused by the action of water-borne particles (silt, sand, gravel and other solid particles), which erode concrete surface through hydraulic processes. This abrasive-erosive concrete damage is

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Investigation on abrasive wear of concrete containing hematite

surfaces that are in mechanical contact and slide against each other 7. Abrasive wear is known to occur in pavements like floor and concrete highway by foot and vehicular traffic, hydraulic structures and other surfaces upon which friction forces are applied due to relative motion between the surfaces

get price

Investigation of steel fiber effects on concrete abrasion ...

Concrete surfaces under different environmental conditions are generally subjected to significant abrasion due to friction, heavy object movement, and abrasive material. In coastal structures, water acts as the abrasive Investigation of steel fiber effects on concrete abrasion resistance

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Abrasion resistance of concrete made with micro fibers and ...

concrete in the hydraulic structures. In the case of ... the increased wear of the steel fibers reinforced concrete has been observed, as compared to the concrete without fibers [21]. The investigations [21–23] of the erosion of the concretes at the low speed of the abrasive mixture ... the concrete surface is different in both cases.

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Abrasion Resistance of Materials IntechOpen

Mar 16, 2012  2. Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and Application of Repair Materials. By José Carlos Alves Galvão, Kleber Franke Portella and Aline Christiane Morales Kormann. 4843: Open access peer-reviewed. 3. Abrasion Resistance of High Performance Fabrics. By Maja Somogyi Škoc and Emira Pezelj. 7146: Open access peer ...

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Erosion Mechanisms of Hydraulic Concretes under High-Speed ...

The erosion behaviors of a hydraulic concrete under high-speed abrasive waterjets at different impact angles were investigated in this paper. The worn surfaces were observed by a scanning electron microscope (SEM). It was found that the defects in the matrix are often the nucleation sites of the microcracks during the erosion. The erosion mechanisms of hydraulic concrete at different impact ...

get price

ABRASION RESISTANCE OF CONCRETE AND THE USE OF

ABRASION RESISTANCE OF CONCRETE AND THE USE OF HIGH PERFORMANCE CONCRETE FOR CONCRETE RAILWAY CROSSTIES BY ... Due to certain durability problems, however, the observed service life of concrete ties has been significantly shortened and greater maintenance has been required than anticipated. ... abrasion and hydraulic pressure cracking at rail seat,

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A Comprehensive Review on Abrasion Resistance of Concrete

in deterioration of concrete surfaces [1, 2]. Fracture of surface leads to reduction of concrete thickness, makes smoother surface and increase dust on concrete surface which weaken concrete and make in inconvenient to use [3]. In spite of above preseason, scant attention has been paid to hardness, toughness and abrasion resistance of concrete.

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Use of Crushed Rock in Developing Abrasion Resistant ...

The concrete surface of the spillway structures constructed across Himalayan rivers are generally subjected to erosion due to abrasive action of rolling boulders, shingles, debris etc. carried away by high speed flowing water during monsoon and heavy flood.

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Abrasive Wear Resistance of Concrete in Connection with ...

Virtually every concrete structure comes into contact with abrasive effects of flowing media or solids, which have a direct impact on the durability of concrete. An abrasive effect is most pronounced in transport or water management structures, and these structures are often designed for a significantly longer service life (usually 100 years).

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DisbondmentsofPipelineCoatings andTheir Effects ...

coated offshore pipeline (with concrete 22 J P C L S e p t e m b e r 2 0 0 9 paintsquare weight coating) operating at about 80 C (176 F) has been cut out for inspection related to internal corrosion. Disbondment of 3LPP from the steel was observed, showing that disbond-ment seems to be possible offshore also. Laboratory Studies

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