34   Journal of Engineering, Mechanics and Architecture                      www. grnjournal.us  

 
 

AMERICAN Journal of Engineering,  
Mechanics and Architecture 

Volume 3, Issue 12, 2025 ISSN (E): 2993-2637 

 
  

Research and Testing of Basalt Fiber Reinforced Concrete Beams 

on Slope Section 
 

Alimov X. T. 

Associate professor PhD., Tashkent University of Architecture and Civil Engineering,  

Republic of Uzbekistan, Tashkent 

Khasanova D. S. 

Doctoral Student., Tashkent University of Architecture and Civil Engineering,  

Republic of Uzbekistan, Tashkent 

 

Abstract: In this article, the strength of reinforced concrete beams reinforced with basalt fibers 

in the slope section was studied experimentally and theoretically. The role of fibers in the 

concrete structure, their effect on crack elimination and their contribution to shear strength were 

analyzed. According to the results of laboratory tests, it was found that basalt fibers increase the 

shear strength and energy absorption capacity of concrete in the slope section. The results of the 

studies were compared with ordinary reinforced concrete, and suggestions were made on the 

optimal fiber content.  

Keywords: basalt fiber, reinforced concrete beam, oblique section, shear strength, dispersion 

reinforcement, cracking deformation, experimental test. 

 

 

Introduction. Reliability of constructions, long service life and seismic stability are the main 

requirements in the field of construction. Cracks along the inclined section of reinforced concrete 

beams are a weak point that causes the failure of the structure. Application of basalt fibers in 

addition to normal reinforcement:  

➢ increases the tensile strength of concrete;  

➢ slows down the development of cracks;  

➢ improves the ability to absorb cutting forces;  

➢ increases resistance to corrosion and high temperature.  

Therefore, cross-sectional testing of basalt fiber reinforced concrete beams and assessment of 

their performance are very relevant in modern construction.  

In reinforced concrete structures, stresses are mainly in the bending and tensile states. However, 

under the influence of shear forces, large cracks appear along the cross-section, threatening the 

overall reliability of the beam. Fiber-reinforced concrete (FRC) is one of the most effective 

technologies to overcome this problem point.  

Main part. Basalt fibers are naturally occurring, stable at high temperatures, non-corrosive, and 

bond well with concrete. In this study, the amount of basalt fiber and its effect on the strength of 

the slope were evaluated through practical tests. Analysis of research conducted on the topic: 

Research conducted by scientists has yielded the following main conclusions:  



 

35   Journal of Engineering, Mechanics and Architecture                      www. grnjournal.us  

 
 

1. Zhang Y., Wu H. (2020) noted that basalt fibers increase the shear strength of concrete by 15–

30%.  

2. Aliyev R. (2019) found that the energy absorption capacity of basalt fiber concrete was 

significantly improved.  

3. Neville A. (2015) noted that the addition of dispersed reinforcement to concrete limits crack 

propagation.  

4. In local researches (Karimov, Farmonkulov) positive results regarding strength, deformation 

and seismic stability of fiber concrete were noted.  

At the same time, a comprehensive study of basalt fiber beams in a precise cross-section testing 

scheme has not yet been sufficiently covered.  

Research methodology and test scheme. The study used 1500 mm long reinforced concrete 

beams with a cross section of 100×200 mm. A shear-forced scheme was established using three-

point loading. Types:  

1. 0% fiber (control sample)  

2. 0.5% basalt fiber concrete  

3. 1% basalt fiber concrete 

The length of the fibers is 12 mm, the diameter is 18–20 μm. 

The tests were conducted on a universal hydraulic press, using strain gauges and the following 

equipment: 

1. Hydraulic press (100–500 kN) 

2. Sensors (LVDT) – for strain measurement 

3. Strain gauge – to measure reinforcement elongation 

4. Crack monitoring (Crack meter) 

The test steps are as follows: 

1. The beam is mounted on supports. 

2. The load is applied gradually (0.1–0.2 kN/s). 

3. The moment of appearance of cracks is recorded. 

4. The propagation of cracks in the oblique section is observed. 

5. The beam is loaded until it reaches its full limit state and fails. 

6. All force-deformation graphs are prepared. 

 
Figure 1. Scheme and dimensions of placing loads on beams 



 

36   Journal of Engineering, Mechanics and Architecture                      www. grnjournal.us  

 
 

 

Figure 2. The process of testing barriers 

Results: 

1. Results on shear strength: 

№ Sample type 
Maximum cutting force 

Vmax (kN) 

The difference in 

durability 

1 0% fiber (control) 51 kN – 

2 0.5% basalt fiber 62 kN +22% 

3 1% basalt fiber 70 kN +37% 
 

2. Characteristics of cracks; 

1. Control sample: one large crack in 45° inclined directions, rapid failure. 

2. 0.5% fiber concrete: a few small scattered cracks, expansion is reduced. 

3. 1% fiber concrete: cracks are small and numerous, developing slowly with increasing 

deformation. 

3. Ability to absorb energy 

Basalt fibers increased the plasticity of concrete and improved the energy absorption capacity of 

the structure during testing. 

Conclusion. 

As a result of the research, the following main conclusions were reached: 

1. Basalt fibers significantly increase the shear strength of reinforced concrete beams. 

2. Fibers slow down the development of cracks and improve energy absorption. 

3. The maximum shear strength of 1% fiber concrete was 37% higher than that of the control 

sample. 

4. Basalt fibers increase the plasticity of concrete and improve the seismic stability of the 

structure. 

5. Basalt fiber concrete structures make it possible to partially replace ordinary shear 

reinforcement in construction. 

References:  

1. Zhang Y., Wu H. Shear Behavior of Basalt Fiber Reinforced Concrete Beams, Construction 

and Building Materials, 2020. 

2. Aliyev R. Basalt Fiber Reinforced Concrete Structures, Journal of Civil Engineering, 2019. 



 

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3. Neville AM Properties of Concrete, Pearson Education, 2015. 

4. Karimov A.A. Strength characteristics of fiber concrete materials, TAQI publication, 2021. 

5. Farmonkulov Sh. Study of shear forces in reinforced concrete beams, Uzbekistan 

Construction Journal, No. 4, 2020. 

6. ACI Committee 544. Guide for Specifying, Proportioning, Mixing, Placing, and Finishing 

Steel Fiber Reinforced Concrete, ACI Manual, 2016.