scholarly journals FRACTAL ANALYSIS OF DEFORMATION CURVES OF FIBER-REINFORCED FINE-GRAINED CONCRETES UNDER COMPRESSION

2016 ◽  
pp. 129-146 ◽  
Author(s):  
Vladimir Selyaev ◽  
Tatyana Nizina ◽  
Artemy Balykov ◽  
Dmitriy Nizin ◽  
Alexey Balbalin
Keyword(s):  
Fractal Analysis ◽  
Fiber Reinforced ◽  
Fine Grained ◽  
Deformation Curves

Fine-Grained Fibre Concrete of Run-Of-Crusher Stone Using Volcanic Ash

2021 ◽  
Vol 1043 ◽  
pp. 61-65
Author(s):  
Tolya Khezhev ◽  
Aslan Kardanov ◽  
Eldar Bolotokov ◽  
Azamat Dottuyev ◽  
Ibrahim Mashfezh
Keyword(s):  
Reinforced Concrete ◽  
Raw Materials ◽  
Concrete Strength ◽  
Basalt Fiber ◽  
Strength Properties ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Fine Grained ◽  
Concrete Mixtures ◽  
Polyfunctional Additive

The results of the studies on the creation of self-compacting fine-grained fiber-reinforced concrete based on run-of-crusher stone with the use of a polyfunctional additive D-5 are presented. Compositions of self-compacting fine-grained fiber-reinforced concrete with the use of basalt fiber have been developed, which significantly reduce cement consumption and improve the characteristics of fine-grained concrete mixture and concrete. Using a polyfunctional additive D-5in mixtures makes it possible to increase the strength properties of fine-grained fiber-reinforced concrete while improving the concrete mixtures’ rheological characteristics. Replacement of cement up to 10% of the mass by ash fraction d<0.14 min fine-grained concrete mixtures does not cause a noticeable decrease in the concrete strength properties. The developed self-compacting fine-grained fiber-reinforced concretes have increased strength properties and have a low-cost price due to the use of local raw materials and run-of-crusher stone.

scholarly journals APPLICATION OF MODELS «COMPOSITION – PROPERTY» FOR RESEARCH PROPERTIES OF MODIFIED FIBER-REINFORCED FINE-GRAINED CONCRETES

2016 ◽  
Vol 1 (12) ◽  
pp. 15-21 ◽  
Author(s):  
Балыков ◽  
Artemiy Balykov ◽  
Низина ◽  
Tatyana Nizina ◽  
Макарова ◽  
...  
Keyword(s):  
Statistical Models ◽  
Mechanical Characteristics ◽  
Fiber Reinforced ◽  
Modifying Additives ◽  
Fine Grained ◽  
Composition Property

In the article results of use of experimental-statistical models &#34;modifying additives, dispersible fibers – property&#34; for study of physico-mechanical characteristics of modified fiber-reinforced fine-grained concretes are shown. Advantages of application of the models in this class are displayed. 7 triangular Gibbs-Roseboom’s diagrams fixed in 7 points of bearing triangle with the isolines of maximums of the investigated properties, built with the use of the program Statistica 10.0.1011, and graphic dependences of its are given.

Numerical Investigation of Reinforcing a Masonry Column with Fiber Reinforced Strain Hardening Cementitious Composite

2015 ◽  
Vol 1122 ◽  
pp. 269-272
Author(s):  
Marek Jašek ◽  
Jiri Brozovsky
Keyword(s):  
Strain Hardening ◽  
High Performance ◽  
High Performance Concrete ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Short Fibers ◽  
Fine Grained ◽  
Numerical Assessment ◽  
The Matrix ◽  
New Generation

Fiber reinforced strain hardening cementitious composite is very deformable fine-grained concrete with the matrix based on Portland cement reinforced with short fibers. This composite material represents a new generation of high performance concrete (HPC) and it is also known as flexible concrete. Its characteristic property is that after reaching the strength when the first crack appears "hardening" of the material occurs, i.e. increases the stress and at the same time increases the strain until the ultimate strength of the material is achieved. One of the possibilities is the use of composites in the reconstruction and rehabilitation of buildings. The paper deals with the numerical assessment of the possibility of using fiber reinforced strain hardening cementitious composite during the reinforcement of an axially loaded brick column.

scholarly journals Diagrams of Deformation of Cement Composites Reinforced with Steel Wire Fiber

2018 ◽  
pp. 143-147
Author(s):  
Yuri V. Pukharenko ◽  
Dmitry A. Panteleev ◽  
Mikhail I. Zhavoronkov
Keyword(s):  
Fracture Toughness ◽  
Reinforced Concrete ◽  
Crack Resistance ◽  
Building Materials ◽  
Steel Wire ◽  
Fiber Reinforced Concrete ◽  
General View ◽  
Fiber Reinforced ◽  
Fine Grained ◽  
Deformation Diagrams

Modern construction practice acquires such a tendency, at which it is required to use materials with increased physical, mechanical and operational characteristics, and at the same time, do not require significant material, labor and energy costs for their production. One of the most promising building materials that meet the requirements is fiber-reinforced concrete. However, the increase in the volume of its use is limited by the insufficient degree of study of its properties and characteristics. This problem is aggravated by the constantly expanding range of reinforcing fibers, which can give composites produced on their basis, completely different properties and characteristics. One of the most important characteristics of fiber-reinforced concrete is crack resistance. The most informative method of research of this characteristic is the construction and analysis of deformation and fracture diagrams of samples obtained during bending tensile strength tests. At the initial stage of the described study, several series of fiber-reinforced concrete samples were tested. During the tests, a standard method for assessing the fracture toughness of heavy and fine-grained concretes, governed by the requirements of GOST 29167, was used. A device specially designed for testing fiber-reinforced concrete was used. As a result of the tests, a general view of the deformation diagrams of fiber-reinforced concrete samples was established, strength and energy characteristics of crack resistance, as well as the modulus of elasticity were found, and the labor intensity of the tests was high. In this paper we describe a possible way of obtaining fracture patterns for fiber-reinforced concrete by calculation. The resulting diagrams of deformation of fiber-reinforced concrete samples are built on several key points, the determination of which coordinates is made by calculation. The paper compares the experimental and calculated fracture toughness characteristics of fiber-reinforced concrete manufactured using steel wire fiber. Comparison of the data presented indicates a satisfactory agreement between the calculated and experimental data, which proves the validity of the proposed method for obtaining fiber-reinforced concrete deformation diagrams.

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