scholarly journals Effect of Morphology of Raw Resources of the North Caucasus, Used in the Production of Astringent Low Water Requirements, on the Strength Characteristics of Fiber-Reinforced Concrete

2018 ◽  
Vol 463 ◽  
pp. 032023
Author(s):  
A V Drokov ◽  
V L Kurbatov
Keyword(s):  
Reinforced Concrete ◽  
Fiber Reinforced Concrete ◽  
Strength Characteristics ◽  
Fiber Reinforced ◽  
North Caucasus ◽  
Water Requirements ◽  
The North

scholarly journals Nanomodification of Lightweight Fiber Reinforced Concrete with Micro Silica and Its Influence on the Constructive Quality Coefficient

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7347
Author(s):  
Evgenii M. Shcherban’ ◽  
Sergey A. Stel’makh ◽  
Alexey Beskopylny ◽  
Levon R. Mailyan ◽  
Besarion Meskhi ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Fiber Reinforced Concrete ◽  
Strength Characteristics ◽  
Structural Quality ◽  
Fiber Reinforced ◽  
Modifying Additives ◽  
Quality Coefficient ◽  
Design Characteristics ◽  
Micro Silica ◽  
Modifying Additive

A hypothesis was put forward that a nano-modifying additive of micro silica, which had a beneficial effect on achieving a perfect structure of heavy concrete, can also be effectively used in lightweight fiber-reinforced concrete. The nano-modifying additives of micro silica application in manufacturing lightweight fiber reinforced concrete products and structures can significantly enchain their strength characteristics without increasing their mass and consequently improve their design characteristics. The purpose of the work was to increase the structural quality coefficients for all types of strengths of lightweight fiber-reinforced concrete due to its modification with micro silica. The effect of nano-modifying additives of micro silica on the strength characteristics of lightweight fiber reinforced concrete was studied. The optimal amount of micro silica addition was experimentally confirmed and established of 10% of the cement mass. The coefficients of constructive quality for all experimentally determined strength characteristics of lightweight fiber-reinforced concrete modified with micro silica additives were calculated. The coefficient of constructive quality for tensile strength in bending of lightweight fiber reinforced concrete with additives was two and a half times higher than that of heavy concrete without additives and up to 37% higher than that of lightweight fiber-reinforced concrete without additives.

Deformation and Strength Characteristics for the Calculation of Structures Based on Fiber-Reinforced Concrete Composites

2021 ◽  
Vol 410 ◽  
pp. 812-816
Author(s):  
Vasiliy S. Rudnov ◽  
Ekaterina S. Gerasimova ◽  
Rufina F. Fakhertdinova
Keyword(s):  
Reinforced Concrete ◽  
Economic Feasibility ◽  
Fiber Reinforced Concrete ◽  
Strength Characteristics ◽  
Steady Increase ◽  
Fiber Reinforced ◽  
Complex Design ◽  
Materials Used ◽  
Scientific Team ◽  
Deformation And Strength Characteristics

Currently, there is a steady increase in the production of reinforced concrete structures in factory and construction site conditions for various types of modern buildings with higher operational requirements for them. These structures are pre-calculated according to complex design schemes of loading which also leads to increased requirements for the materials used. One of the ways to solve a number of these problems is the use of fiber-reinforced concretes, but for this it is necessary to experimentally identify the deformation and strength characteristics of dispersed reinforced concretes and take it into account when calculating structures. A scientific team of the Institute of New Materials and Technologies of the Ural Federal University is engaged in solving of this research task, which will expand a number of construction opportunities while maintaining economic feasibility in the future.

Effect of combined drink cans and steel fibers on the impact resistance and mechanical properties of concrete

2020 ◽  
Vol 14 (2) ◽  
pp. 6734-6742
Author(s):  
A. Syamsir ◽  
S. M. Mubin ◽  
N. M. Nor ◽  
V. Anggraini ◽  
S. Nagappan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Impact Resistance ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
Indirect Tensile ◽  
The Impact

This study investigated the combine effect of 0.2 % drink cans and steel fibers with volume fractions of 0%, 0.5%, 1%, 1.5%, 2%, 2.5% and 3% to the mechanical properties and impact resistance of concrete. Hooked-end steel fiber with 30 mm and 0.75 mm length and diameter, respectively was selected for this study.  The drinks cans fiber were twisted manually in order to increase friction between fiber and concrete. The results of the experiment showed that the combination of steel fibers and drink cans fibers improved the strength performance of concrete, especially the compressive strength, flexural strength and indirect tensile strength. The results of the experiment showed that the combination of steel fibers and drink cans fibers improved the compressive strength, flexural strength and indirect tensile strength by 2.3, 7, and 2 times as compare to batch 1, respectively. Moreover, the impact resistance of fiber reinforced concrete has increase by 7 times as compared to non-fiber concretes. Moreover, the impact resistance of fiber reinforced concrete consistently gave better results as compared to non-fiber concretes. The fiber reinforced concrete turned more ductile as the dosage of fibers was increased and ductility started to decrease slightly after optimum fiber dosage was reached. It was found that concrete with combination of 2% steel and 0.2% drink cans fibers showed the highest compressive, split tensile, flexural as well as impact strength.    

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