Investigation on Abrasion Resistance of Hydraulic Structures with Various Repair Mortars

2021 ◽  
Author(s):  
Hibretu Kaske Kassa
Keyword(s):  
Abrasion Resistance ◽  
Hydraulic Structures ◽  
Repair Mortars

Abrasion resistance of polymer and polymer–ceramic composite coatings for steel hydraulic structures

2019 ◽  
Vol 17 (2) ◽  
pp. 401-411
Author(s):  
P. V. Vijay ◽  
Piyush R. Soti ◽  
Derrick A. Banerjee ◽  
Konstantinos A. Sierros
Keyword(s):  
Abrasion Resistance ◽  
Ceramic Composite ◽  
Composite Coatings ◽  
Hydraulic Structures

scholarly journals Abrasion Behavior of Steel-Fiber-Reinforced Concrete in Hydraulic Structures

2020 ◽  
Vol 10 (16) ◽  
pp. 5562 ◽  
Author(s):  
Yu-Wen Liu ◽  
Yu-Yuan Lin ◽  
Shih-Wei Cho
Keyword(s):  
Reinforced Concrete ◽  
Abrasion Resistance ◽  
Steel Fiber ◽  
Cementitious Material ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Hydraulic Structures ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
The Impact

This study investigated two types of abrasion resistance of steel–fiber-reinforced concrete in hydraulic structures, friction abrasion and impact abrasion using the ASTM C1138 underwater test and the water-borne sand test, respectively. Three water-to-cementitious-material ratios (0.50, 0.36, and 0.28), two impact angles (45° and 90°), plain concrete, and steel–fiber-reinforced concrete were employed. Test results showed that the abrasive action and principal resistance varied between the two test methods. The average impact abrasion rates (IARs) of concrete were approximately 8–17 times greater than the average friction abrasion rate (FARs). In general, the impact abrasion loss of the concrete surface impacted at a vertical angle was higher than that of impacted at a 45 degree angle. Moreover, the average FAR and IAR decreased when the concrete was reinforced with steel fibers. The steel fibers acted as shields to prevent the concrete material behind the fibers from abrasion, thus improving abrasion resistance. In both the underwater and waterborne sand flow methods, the resistance to abrasion of concrete without steel fibers increased as the water/cementitious material ratio (w/cm) decreased, and the concrete compressive strength also increased.

scholarly journals Testing of Concrete Abrasion Resistance in Hydraulic Structures on the Lower Sava River

2012 ◽  
Vol 58 (4) ◽  
pp. 245-254 ◽  
Author(s):  
Andrej Kryžanowski ◽  
Matjaž Mikoš ◽  
Jakob Šušteršič ◽  
Velimir Ukrainczyk ◽  
Igor Planinc
Keyword(s):  
Abrasion Resistance ◽  
Hydraulic Structures ◽  
Sava River

Influence of structural parameters on abrasion-erosion resistance of various repairing mortars

1990 ◽  
Vol 17 (1) ◽  
pp. 12-18 ◽  
Author(s):  
J. Mirza ◽  
S. Turenne ◽  
J. Masounave
Keyword(s):  
Erosion Resistance ◽  
Incidence Angle ◽  
Structural Parameters ◽  
Hydraulic Structures ◽  
Slurry Erosion ◽  
Large Size ◽  
Factors Influencing ◽  
Strong Relation ◽  
Sand Particles ◽  
Repair Mortars

Slurry erosion tests were performed on various types of repairing mortars in order to determine the factors influencing the abrasion-erosion resistance of some mortars. An in-house built apparatus was used, which produced a slurry jet that impinged the surface of mortar specimens with an incidence angle of 45° and a velocity of 18.5 m/s. The results showed that the epoxy mortars were the most erosion resistant compared with cementitious grouts and polymer-modified cement-based mortars. The erosion of mortars is controlled by the wear of the binder (epoxy or cement paste), and a strong relation exists between the erosion resistance of the mortar and the absence of microporosity in the binder. The results also suggest that to minimize the exposed areas of the binder, well-graded, i.e., small- and large-size, sand particles should be used. Key words: abrasion, erosion, repair mortars, cementitious grouts, polymer-modified cement-based mortars, epoxy mortars, hydraulic structures.

scholarly journals Influence of basalt micro-fibres on the abrasion resistance of concrete in hydraulic structures

2021 ◽  
Vol 54 (2) ◽  
Author(s):  
Nicholas Omoding ◽  
Lee S. Cunningham ◽  
Gregory F. Lane-Serff
Keyword(s):  
Mechanical Properties ◽  
Modulus Of Elasticity ◽  
Abrasion Resistance ◽  
Test Method ◽  
Sustainable Construction ◽  
Hydraulic Structures ◽  
Basalt Fibre ◽  
Abrasion Loss ◽  
Tensile Splitting Strength ◽  
Construction Product

AbstractIn hydraulic structures, abrasion resistance can be a significant driver in concrete specification. Basalt micro-fibres represent a potentially sustainable construction product and have been shown to provide various benefits in concrete, however the implications for hydrodynamic abrasion resistance are to date unclear. This paper is the first investigation of its kind to examine the abrasion resistance of basalt fibre-reinforced (BFR) concretes using the ASTM C1138 underwater test method. Towards this, concretes incorporating fibre dosages of 0.5, 1, 1.5 and 3 kg/m3 were tested. The relationships between concrete abrasion and its fundamental mechanical properties are evaluated. For the particular concretes examined, it is found that based on the Shapiro-Wilks tests at 95% confidence, abrasion loss in BFR concretes followed a normal distribution; the use of basalt fibre in contents of up to 3 kg/m3 did not have a significant effect on abrasion resistance, compressive and tensile splitting strengths, as well as modulus of elasticity. It can be concluded that basalt micro-fibre can be used for their other attributes such as controlling bleeding, shrinkage and plastic cracking in concrete hydraulic structures without deleterious effects on abrasion resistance. The regression models proposed to predict concrete abrasion loss from its mechanical properties were found to be only significant at 48 h for compressive strength and 24 h for both tensile splitting strength and modulus of elasticity.

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