scholarly journals EXPERIMENTAL STUDY ON THE RATE OF ABSORPTION OF WATER OF BASALT, POLYPROPYLENE, AND STEEL FIBERS REINFORCED CONCRETE

2021 ◽  
Vol 30 (2) ◽  
Author(s):  
Sadi Ibrahim Haruna
Keyword(s):  
Reinforced Concrete ◽  
Water Absorption ◽  
Steel Fiber ◽  
Capillary Rise ◽  
Control Specimen ◽  
Concrete Mixtures ◽  
Site Use ◽  
Rate Of Absorption ◽  
Water Absorption Test ◽  
Almost All

Good durability of concrete is an essential part of the design process, and tests to determine sustainability have been developed for both laboratory and site use. The main feature of durable concrete is low water absorption. Almost all forms of deterioration in reinforced concrete involve deleterious fluid ingress through the concretes pore structure. In wet concrete, the water ingress rate or other liquids is mostly controlled by absorption due to capillary rise. This study examines the effect of basalt, polypropylene, and steel fiber in different volume fractions at 0.3%, 0.6%, and 0.9% for absorption tests. A total of 8 specimens for different fiber were examined based on the rate of water absorption test recommended by ASTM C1585-04.  A result obtained has been analyzed and compared with the control specimen. A relationship between absorption rate and the square root of time for both concrete mixtures was represented graphically and linearly. Result data showed a precise decrease in absorption due to incorporating both types of fiber. Also, from the result data, basalt and polypropylene showed greater uptake than steel fiber and enhances mass transport of water into concrete specimens. However, steel fiber addition showed high resistance to absorption rater than the control specimen and other fiber.

scholarly journals The Study of the Strength Properties of Galvanized Iron (GI) Fiber Reinforced Concrete

2020 ◽  
Vol 6 (3) ◽  
pp. 285
Author(s):  
Sristi Das Gupta ◽  
MD Shah Newaz Aftab Chayon ◽  
Chaity Karmaka ◽  
Hasan Mohammad Zakaria
Keyword(s):  
Reinforced Concrete ◽  
Physical Properties ◽  
Steel Fiber ◽  
Plain Concrete ◽  
Strength Properties ◽  
Fiber Reinforced Concrete ◽  
Control Specimen ◽  
Fiber Reinforced ◽  
Concrete Mechanical Properties ◽  
Metallic Fiber

 The use of concrete with randomly distributed metallic or non-metallic fiber is now prominent in concrete engineering and metallic fiber has been reported to have a better contribution to concrete mechanical properties. The utilization of locally available galvanized iron or metallic fiber as a bridging material which is a new technique in Bangladesh has the ability to surprisingly improve concrete physical properties. This research was, therefore, conducted to compare the concrete performance of GI fiber and steel fiber using previous literature as well as the suitability of GI fiber as a supplant to steel fiber in the concrete industry. This was achieved through the evaluation of the compression, tension, and brittleness of concrete with ‘Galvanized Iron’ fiber using several cutting lengths of 20 mm and 40 mm with multiple mix proportions including 1.0%, 1.5%, 2.0%, and 2.5% by volume of the concrete. The results showed the fiber with a large cut length of 40 mm and proportion lesser than 2.5% performed well than 20 mm with proportion 2% in reference to the plain concrete. Moreover, the incorporation of a 2.0% proportion of galvanized iron fiber with 40 mm length was observed to have exhibited crowning increment for both concrete compression and tension by 16.1% and 89.2% correspondingly contrasted to the control specimen. A further increase in the percent of fiber content 2% led to a reduction in the compression and tension for both 20 mm and 40 mm lengths while a significant reduction in brittleness for galvanized iron fiber reinforced concrete was observed in contrast to the control specimen. Furthermore, the inclusion of 1.0%–2.5% GI fiber with a 40 mm length reduced concrete brittleness by 56.9% - 65.5 % in comparison with the control specimen. Therefore, the inclusion of galvanized iron (metallic) to enhance the physical properties of concrete was deduced to be one of the startling stratagems

Acoustic emission by steel fiber reinforced concrete under tensile damage

2017 ◽  
Vol 59 (7-8) ◽  
pp. 653-660 ◽  
Author(s):  
Wang Yan ◽  
Ge Lu ◽  
Chen Shi Jie ◽  
Zhou Li ◽  
Zhang Ting Ting
Keyword(s):  
Acoustic Emission ◽  
Reinforced Concrete ◽  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Tensile Damage

On axial compressive behavior of steel fiber reinforced concrete confined by FRP

2021 ◽  
pp. 136943322098165
Author(s):  
Hossein Saberi ◽  
Farzad Hatami ◽  
Alireza Rahai
Keyword(s):  
Reinforced Concrete ◽  
Experimental Test ◽  
Steel Fiber ◽  
Experimental Tests ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Test Results ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Frp Confinement

In this study, the co-effects of steel fibers and FRP confinement on the concrete behavior under the axial compression load are investigated. Thus, the experimental tests were conducted on 18 steel fiber-reinforced concrete (SFRC) specimens confined by FRP. Moreover, 24 existing experimental test results of FRP-confined specimens tested under axial compression are gathered to compile a reliable database for developing a mathematical model. In the conducted experimental tests, the concrete strength was varied as 26 MPa and 32.5 MPa and the steel fiber content was varied as 0.0%, 1.5%, and 3%. The specimens were confined with one and two layers of glass fiber reinforced polymer (GFRP) sheet. The experimental test results show that simultaneously using the steel fibers and FRP confinement in concrete not only significantly increases the peak strength and ultimate strain of concrete but also solves the issue of sudden failure in the FRP-confined concrete. The simulations confirm that the results of the proposed model are in good agreement with those of experimental tests.

Driven steel-fiber-reinforced-concrete pyramidal piles

1984 ◽  
Vol 21 (3) ◽  
pp. 108-111
Author(s):  
V. S. Sterin ◽  
V. A. Golubenkov ◽  
G. S. Rodov ◽  
B. V. Leikin ◽  
L. G. Kurbatov
Keyword(s):  
Reinforced Concrete ◽  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete
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