Enhancing Concrete Mechanical Properties …
To study the effects of basalt fibers (BFs), calcium sulfate whiskers (CSWs), and modified calcium sulfate whiskers (MCSWs) on the compressive strength and dynamic modulus of elasticity of concrete, …
Post-cracking behaviour of basalt and macro
This study experimentally investigated the mechanical properties of basalt-macro polypropylene hybrid fibre reinforced concrete. Three macro polypropylene fibre volume fractions (0.3%, 0.7% and 1%), two concrete compressive strengths (30 MPa and 60 MPa) and basalt fibre volume fraction 0.1%, were used to study their influences on …
Basalt Rock
The rock hardness of basalt is 6 as per the Mohs scale and can be observed through a combination of its compressive strength. Generally, 100-300 Mpa or Megapascal is the compressive strength. Its tensile strength is10-30 Mpa, and its shear strength is 20-60 Mpa, which denotes that depending on the mineral makeup, basalt …
A short review on basalt fiber reinforced polymer composites
Lopresto et al. [13] investigated and compared the compressive strength, Young's modulus and flexural behavior of basalt fiber reinforced plastics or polymers (BFRP) with glass fiber reinforced plastics (GFRP), and they found that basalt was superior and has the potential to replace glass.
Alkali-activated basalt powder/slag systems: compressive strength …
This study investigates the potential use of basalt powder as a sole precursor or blended in high amounts in slag-based alkali-activated systems. Eight alkali-activated mixes are prepared and comprehensively analyzed to determine the compressive strength development and microstructural characterization of basalt …
Fresh, mechanical, and durability properties of basalt fiber …
The compressive strength increased by about 10% at a fibers dose of 2% compared to the control mix. However, the further increase in BF dosage to 2.5% and 3% showed a negative impact on the compressive strength, where the compressive strength dropped by about 12% and 21%, respectively. ... Effect of basalt fibers length …
Experimental Study of the Compressive Strengths of Basalt …
The dynamic compressive strength of basalt fiber-reinforced concrete was bigger than that of ordinary concrete. The rapid development of modern society has increased the demand for high-performance geo-materials. As an advanced cementitious composite, fiber-reinforced concrete has attracted much attention and has been widely …
Uniaxial compressive strength ( c) and deformation …
Uniaxial compressive strength ( ... Basalt 145 50 347 25 207 82 395 3 (17) Diabase, dolerite 229 88 384 13 152 81 537 5 15.2 Hyperite - - - - 245 108 441 2 ure Graywacke 81 25 310 12 - - - - Sandstone 109 28 257 95 147 28 189 5 18.8 Siltstone 89 31 350 14 - - - - …
Mechanical Properties and Damage Evolution Characteristics …
Compared with the compressive strength 250 MPa of basalt at 25℃, the compressive strength σ c after heat treatment at 200 ℃ and 400 ℃ increases by …
Structural Behavior of Ultra-High Strength Concrete …
The axial compressive behavior of Ultra-High Strength Concrete (UHPC) columns reinforced with basalt bars was investigated in this work. Only a few research projects have used basalt Reinforced Concrete Columns. Under axial stress, 12 columns of 150 × 150 mm in cross section and 1200 mm in height manufactured of M120 grade …
Estimating uniaxial compressive strength of rocks using …
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 …
Engineering, Mechanical and Dynamic Properties of Basalt …
From the results of the modal test, as shown in Table 7, and the compressive test, as presented in Table 4 and Figure 4, the compressive strength and dynamic MOE have shown a similar trend when the volume fraction of basalt fiber is increased continuously, with M 2 (0.25%) showing the highest compression and dynamic MOE value.
Mechanical relationship between compressive strength and …
After the sulfate erosion test, the compressive strength of OC and BFRC was obtained through the standard compressive strength test according to the Standard Test Method for Mechanical Properties of Ordinary Concrete (GB/T 50081–2021) [23]. A total of 160 specimens were tested by YAW-300 electro-hydraulic servo pressure test …
Limits on strength and deformation properties of jointed …
A study of strength and deformation measurements for basaltic rocks, along with consideration of the influence of fracturing using a rock mass classification system, …
Uniaxial compressive strength ( c) and deformation …
Uniaxial compressive strength ( ... Basalt 145 50 347 25 207 82 395 3 (17) Diabase, dolerite 229 88 384 13 152 81 537 5 15.2 Hyperite - - - - 245 108 441 2 ure Graywacke …
Mechanical properties and acoustic emission characteristics …
The unconfined compressive strength test is an essential method for evaluating the effectiveness of cement stabilization and assessing the influence of …
STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES
between strain hardening and softening is called the unconfined compressive strength of the rock and is denoted as Co or qu. Failure takes place continuously from C to D during …
Basalt Fiber Reinforced Concrete: A Compressive Review on …
Basalt fiber (BF) stands out as the most intriguing among the natural fibers that may be utilized as reinforcement due to their characteristics. Numerous academics have conducted many tests on the strength, durability, temperature, and microstructure characteristics of concrete reinforced with BF and have found promising results.
Geomechanical rock properties of a basaltic volcano
Overall, axial compressive strength for Pacaya basalt ranges widely from 12 to 174 MPa (Table 3), with the lower end falling into strength categories as low as chalk . Given that the porosity of the …
Shear strength characteristics of basalt fiber-reinforced …
Basalt ˜ber is a green inorganic composite material with high strength, temperature resistance, corrosion resistance, and no pollution, which has good application prospects in the elds of ...
Dynamic compressive properties of Kalgoorlie basalt rock
In this study, the basalt rock extracted from the Kalgoorlie region of Western Australia is intensively studied on its compressive properties under both static and dynamic loads covering strain rate between 2.22 × 10-6 /s to 408/s. The ultimate compressive strength and corresponding failure strain are quantified. The test results show that …
Basalt Fibers Reinforced Concrete: Strength and Failure Modes
Figure 6 shows the compressive strength (CS) with the addition of basalt fibers. It can be observed that BF addition increased the CS. When the amount of BFs in the mix was increased, there was a minor improvement in the CS of the material up to 1.5 percent fiber volume. ... To enhance the compressive capacity of basalt-fiber-reinforced ...
Mechanical performances and micro-level properties of …
Compressive test results showed basalt fiber could increase compressive strength at elevated temperatures. The optimal basalt fiber volume fraction was 0.8%, …
Mechanical Characterization of Compact Basalt by Using …
In the present work, dynamic stress-strain response of compact basalt is tested under high loading rates using 38 mm split Hopkinson pressure bar (SHPB) device. The physical and static mechanical properties of compact basalt, e.g., density, specific gravity, static compressive strength and elastic modulus values are also determined. …
(PDF) Assessing the uniaxial compressive …
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 ...
comparison between Compressive strength of basalt and …
The results revealed that the 28 days compressive strength of polypropylene, basalt, and steel fibre-reinforced mortar increased by 6.9%, 7.7%, and 16.2%, respectively, with the inclusion of fibre
Empirical Estimation of Uniaxial Compressive …
Empirical relationships for estimating Uniaxial Compressive Strength (UCS) of rock from other rock properties are numerous in literature. This is because the laboratory procedure for determination of …
Basalt Rock Properties and Uses
This property is usually measured to find out the compressive fracture strength, to denote whether a rock is softrock or hardrock. The rock hardness of basalt is 6 on the Mohs scale, and can be seen through a combination of its compressive strength: 100-300 Mpa (Megapascal), its tensile strength: 10-30 Mpa, and its shear strength: 20-60 Mpa ...
Compressive Strength Prediction of Basalt Fiber Reinforced …
Compressive strength prediction of Basalt Fiber Reinforced Concrete (BFRC), an advanced building material that combines performance and sustainability, is a complex task influenced by many factors. In this study, the compressive strength of BFRC is predicted using four tuned machine learning models, namely, Support Vector Machine …
Alkali-activated basalt powder/slag systems: …
[19] investigated the compressive strength of NaOH-activated basalt systems by varying the activator dosages and curing temperatures. They determined that a moderate compressive strength (about 16 MPa) can be realized and the compressive strength can be improved by increasing the curing temperature and duration.Moreover,they ...