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Estimating the compressive and tensile strength of basalt fibre
This research presents novel hybrid machine learning models for predicting the compressive strength (CS) and tensile strength (TS) of basalt fibre reinforced concrete …
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Experimental and theoretical study on compressive mechanical …
The ultimate compressive strength of the RC composite bars with a height-to-diameter ratio of 16 is lower than that of the PC composite bars because, in the compression process, the former experiences global buckling failure, and the lateral bending of the composite bars leads to a rapid loss of bearing capacity. ... Deterioration of basalt ...
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Studies on Mechanical Behaviour of Basalt Fibre Reinforced
It was found that the addition of basalt fibre by 1.5% and alcofine by 20% in concrete resulted in an increase in compressive strength of 8.9% for 7 days and 4.9% for 28 …
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Mechanical performances and micro-level properties of basalt …
Compressive test results showed basalt fiber could increase compressive strength at elevated temperatures. The optimal basalt fiber volume fraction was 0.8%, whereby compressive strength was higher than that of control PVA-ECC by 62.05%, 55.45% and …
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Empirical models for compressive and tensile strength of basalt …
Basalt fibers (BF) are produced from the basalt rocks which are formed because of volcanic lava solidification. BF are abundantly found on earth due to their volcanic origin 1,2.BF have higher ...
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Effects of microwave radiation on dynamic compressive properties of basalt
Specifically, After being treated at 2 and 4 kW for 90 s, the dynamic compressive strength of basalt decreased by 16% and 20%, respectively. While the dynamic compressive strength of sandstone was reduced by 8% and 17% after being treated at 3 kW and 5 kW for 90 s, respectively [37]. Although a higher power level is used, the dynamic ...
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Compressive mechanical performance and microscopic mechanism of basalt
The cube compressive strength and axial compressive strength of the specimens decreased with the increase of temperature. With the same replacement ratio and fiber dosage, increasing the temperature from 300 °C to 600 °C, the decrease in cube compressive strength and axial compressive strength was the most significant, which was between 36.4 ...
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Studies on strength properties of basalt fibre reinforced concrete
The experimental test results of compressive strength and split tensile strength are showing on the table 3 against various volume fractions of basalt fibres such as 0%, 0.5%, 1%, 1.5%, 2%, 2.5% and 3% against the age of curing 7 days and 28 days. Fig. 5 shows, the 7 days compressive strength is having almost 55% to 64% of 28 days compressive strength for the …
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Empirical models for compressive and tensile strength of basalt …
When molten magma solidifies, basalt fiber (BF) is produced as a byproduct. Due to its remaining pollutants that could affect the environment, it is regarded as a waste product. To determine the compressive strength (CS) and tensile strength (TS) of ...
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Splitting Tensile Strength of Cement Soil Reinforced with Basalt …
Several studies have pointed out that there was a linear relationship between the tensile strength and the compressive strength of the cement soil [32,33]. Therefore, the correlation between the splitting tensile strength and the compressive strength of the cement soil reinforced with basalt fibers was investigated in this study.
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Estimating the Unconfined Compressive Strength of Vesicular
ABSTRACT. ABSTRACT: Understanding and predicting the intact strength of rock is very important in design of foundations, tunnels, and in other engineering projects. The presence of vesicles within basalt has a direct impact on the unconfined compressive strength (UCS) of the intact rock. Over 130 basalt samples from foundation projects for a large liquid …
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Strength, durability and finite element analysis of hybrid jute/basalt
It is evident that from the comparison of CFJ2B3 and CFJ2B2, the CFJ2B3 is showing only a marginal increase of 7.3 % with respect to CFJ2B2 in compressive strength by introducing an additional basalt layer. Thus, from an economical and performance perspective, CFJ2B2 wrapping was selected as the optimum for further analysis.
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Strength and deformation properties of granite, basalt, limestone, …
The dynamic compressive strength factor for the granite was less than l; for the basalt, 1.35; for the limestone, 1.52; and for the tuff, 1.74. The compressional wave velocity of rock is affected by increases in both the applied axial stress and confining pressure.
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Axial compressive behavior of basalt and polyacrylonitrile fibers
In this research, basalt fiber (BF) and polyacrylonitrile fiber (PANF) were used as reinforcement materials in LWACs, and the axial compressive behavior of prismatic specimens subjected to freeze-thaw cycles was studied. ... The axial compressive strength test was conducted in accordance with the requirements of the Chinese Standard (GB/T 50081 ...
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Compressive stress–strain relationship and its variability of basalt
Increasing the content of basalt fibers to a certain extent can enhance the compressive strength of RAC, but it also significantly increases the variability of material performance. Additionally, the minimum compressive strengths of these three sets of specimens are 19.3, 19.7, and 21.0 MPa, respectively, indicating that the influence of fiber ...
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Experimental investigation of the effect of basalt fibers on the
The properties of basalt fibers in different environments and their impact on concrete were examined. Basalt fibers have lower durability in alkaline environments compared to carbon fibers and can lose up to 80 % of their volume [9].Autoclaved environments have a negligible effect on the compressive strength of basalt fibers [9].The elastic modulus in …
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Experimental and numerical assessment of recycled plastic fibers …
Regarding concrete compressive strength, a primary parameter of hardened concrete, the presence of fibers generally reduced compressive strength compared to plain concrete, except for the W0.8 A and S0.8B mixes, as shown in Fig. 11. This reduction is due to fibers transferring stress in the tension zone rather than the compression zone, which ...
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strength and point load strength of basalt New correlations …
Keywords: Basalt, Regression analysis, Point load strength index, Uniaxial compressive strength Introduction Uniaxial compressive strength (UCS) is an important property of rock. Uniaxial ...
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The Effects of Fiber Length and Volume on Material Properties …
The effect of fiber volume fraction for specimens with a design compressive strength of 30 MPa, and basalt fiber length of 12 mm and 24 mm is presented in Figure 6(a). From this figure, one can observe that the 7-day compressive strength of BFRC specimens made with 12 mm and 24 mm long fibers and with all fiber volume fraction values used in ...
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Mechanical Properties and Crack Resistance of Basalt Fiber Self
The influence of fly ash content on the compressive strength was relatively small, and the 28 d compressive strength of basalt fiber self-compacting high-strength concrete slowly increased with the addition of the fly ash content. From Table 15, it can be seen that the main and secondary order of factors affecting the 28 d compressive strength ...
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Evaluation of the Changes in the Strength of Clay Reinforced with
In this research, the impact of basalt fiber reinforcement on the unconfined compressive strength of clay soils was experimentally analyzed, and the collected data were utilized in an artificial neural network (ANN) to predict the unconfined compressive strength based on the basalt fiber reinforcement ratio and length. For this purpose, two different lengths of …
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Effect of aggregate type on Compressive strength of …
basalt and gravel gave similar compressive strength while the concrete containing limestone attained higher strength. The effects of content and particle size distribution of coarse
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Engineering, Mechanical and Dynamic Properties of Basalt Fiber
The results indicate that concrete's toughness and crack resistance performance are significantly improved with added fiber in basalt fiber reinforced concrete, and the optimum fiber content is …
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The Prediction of Compressive Strength and Compressive …
The optimal percentage of BF for compressive strength was 1.2. The compressive strength was significantly improved by adding 1.2% of BF. In fact, the improvement in compressive strength of High-Performance Concrete was due to the incorporation of BF and cement matrix at the microscopic scale.
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Mechanical relationship between compressive strength and …
This paper introduced the experimental results on the compressive strength and the sulfate erosion depth of both ordinary concrete and basalt fiber reinforced concrete, based …
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(PDF) Assessing the uniaxial compressive strength and
Basalt was used as an ornamental stone in many historic and ancient cities in Jordan. Measuring the uniaxial compressive strength (UCS) and the tangent Young's modulus (E t) in the laboratory ...
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Mechanical properties and damage constitutive model of basalt …
Peak shear stress, peak shear strain, and initial shear modulus can be improved by increasing the compressive stress ratio and adding basalt fibres. The above compression-shear properties are positively correlated with the compressive stress ratio and tend to increase and then decrease with the increase of basalt fibre content, and the optimum ...
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Fabrication and Compression Properties of Reinforced Epoxy …
The compressive strength of prepared buoyancy material can meet the pressure resistance requirements for operations in waters of a certain depth. ... basalt fi ber; compressive strength; epoxy ...
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Effect of Basalt Fiber Content and Length on the Strength and …
It was concluded that adding 0.5 % of 9 mm basalt fiber results in the greatest increase in unconfined compressive strength (UCS). The UCS reached 12.59 MPa, which was 71% higher than specimens without fiber, and a regression analysis was carried out to obtain the relationship among them.
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Estimating uniaxial compressive strength of rocks using genetic
Porosity is a significant physical feature of rocks due to water absorption that causes decrease in the strength. The basalt of the study area can be described as "highly porous" and ignimbrite as "extremely porous" according to the classification by Anon (1979).The average UCS of basalt is determined as 26.65 MPa.For the ignimbrite, the lowest UCS is observed in …
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