abrasive effects observed in concrete hydraulic surfaces

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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 ...

PDF On Mar 16, 2012, Jos Carlos Alves Galv o and others published Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and Application of Repair Materials Find, read and cite all ...

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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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Execution Method for Spillway Hydraulic Surfaces: Upper ...

Execution Method for Spillway Hydraulic Surfaces: Upper Gotvand Dam. ... Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and Application of Repair Materials.

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(PDF) Abrasion Resistance of Concrete in Hydraulic Structures

In hydraulic structures exposed to flows laden with hard sediments, abrasion can occur [25] which severely degrades concrete surfaces and hence reduces their service life and safety [26][27] [28 ...

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How does hydro abrasion erosion (wear) of concrete occur ...

How does hydro abrasion erosion (wear) of concrete occur on hydraulic structure's surface? ... Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and

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Abrasive Effects Observed in Concrete Hydraulic Surfaces ...

Related papers. Page number / 19 19

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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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How does hydro abrasion erosion (wear) of concrete occur ...

How does hydro abrasion erosion (wear) of concrete occur on hydraulic structure's surface? ... Abrasive Effects Observed in Concrete Hydraulic Surfaces of Dams and

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ABRASION RESISTANCE OF HIGH-PERORMANCE HYDRAULIC

underwater method simulates the natural conditions of abrasive concrete wear and can be used for the comparative analysis of the abrasive resistance of stan-dard and high-strength concrete. In this test, the concrete sample is subjected to an abrasive charge consisting of 70 chrome steel balls circulating in water over the concrete surface.

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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. 4944: Open access peer-reviewed. 3. Abrasion Resistance of High Performance Fabrics. By Maja Somogyi Škoc and Emira Pezelj. 7223: Open access peer ...

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Abrasion Resistance of Concrete Design, Construction and ...

surface cracks would have on abrasive wear of concrete. They used three crack orientations (0, 45 and 90 degrees to the test direction) and four crack widths (0.5, 1, 2, and 3 mm) in their study.

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

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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Concrete Surface Preparation: Part 3 - Grades of Concrete ...

Abrasive blasting propels dry or moist abrasive in a stream of compressed air. Upon impact, the abrasive particles penetrate the substrate, dislodging fragments of mortar and fines, producing an overall eroding effect. Abrasive blasting removes surface contaminants, unsound concrete, coatings and adhesive films, and imparts a profiled surface.

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Resistance to Underwater Abrasion of Fiber Reinforced ...

Surfaces of hydraulic concrete conduits where significant abrasion of waterborne sediment can occur often degrade and need a regular repair to maintain their serviceability. In this research, thin overlay made of fiber reinforced cement mortar was introduced as a repair measures. Its resistance to underwater abrasion was therefore experimentally evaluated following the procedures of ASTM C 1138.

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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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Erosion Test with High-speed Water Jet Applied on Surface ...

Sep 15, 2018  Abstract. The paper focuses on the erosion resistance test based on surface treatment by a high-speed water jet applied on concrete. A reference concrete sample and concrete samples with three types of solution of modified lithium silicates applied on the concrete surface were tested under various erosion conditions.

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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 ...

Get price

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.

Get price

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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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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dam 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 ...

Get price

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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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).

Get price

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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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 ...

Get price

Abrasion Resistance of Polymer Nanocomposites - A Review ...

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. Related Book. IntechOpen. Pitting Corrosion Edited by Nasr Bensalah. Pitting Corrosion.

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Hydraulic Jet - an overview ScienceDirect Topics

Andreas W. Momber, in Hydrodemolition of Concrete Surfaces and Reinforced Concrete, 2005 6.3.2 Pump pressure effects Effects of pump pressure on hydraulic and water jet parameters are already mentioned in Section 2.3.2 .

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The relations between mechanical strengths and abrasive ...

Therefore, the abrasion resistance of concrete is defined as the ability of a concrete surface to resist being worn away by rubbing and friction (Erdogan 2005).Abrasive wear occurs in pavements, concrete highways, hydraulic structures and other surfaces upon which friction forces are applied due to relative motion between the surfaces and ...

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Influence of basalt micro-fibres on the abrasion ...

Mar 08, 2021  In hydraulic structures exposed to flows laden with hard sediments, abrasion can occur which severely degrades concrete surfaces and hence reduces their service life and safety [26,27,28,29,30]. Thus, the selection of concrete mixtures to be used in these structures is often governed by abrasion resistance .

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IS 9284 (1979): Method of test for abrasion resistance of ...

tics of concrete under physical effects only by subjecting it to the impingement of air-driven silica-sand using lo-cm concrete cubes. 2. WORKING PRINCIPLE 2.1 The surface of the concrete cubes is subjected to impingement of an abrasive charge ( see 3.3). As a result, abrasion of the concrete surface

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Compared techniques for prediction on abrasive wear of ...

Fig. 6 shows effect of cement and hematite content on wear loss of concrete. Fig. 6. Effect of cement and hematite content on wear loss of concrete. As seen clearly from fig. 6, when cement content was kept constant and hematite content was increased, resistance of concrete to abrasive wear increased.

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