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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 …
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 ...
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, this paper utilizes Mercury Intrusion Porosimetry (MIP) to measure the microstructure of concrete and calculate the fractal dimension of …
The unconfined compressive strength (UCS) of rock is a basic parameter for the design of foundations resting on rock. However, it is often very difficult to retrieve intact rock core specimens for the UCS test due to mechanical breaking or natural fracturing of the rock core during the drilling process. In such cases, it becomes …
Reducing the environmental footprint of the construction industry in general and concrete in particular is essential. The addition of synthetic and natural fibers to concrete mixes at appropriate dosages enhances durability and strength and extends the lifespan of concrete infrastructures. This study reviews the geometric and mechanical …
The test results show that both the unconfined compressive strength (UCS) and splitting tensile strength (STS) at a given basalt fiber content increase significantly with increasing calcite content, whereas the axial strain of the peak failure state decreases with increasing calcite content.
To study the effects of basalt fibers (BFs), calcium sulfate whiskers (CSWs), and modified calcium sulfate whiskers (MCSWs) on the compressive strength and …
Compressive, T ensile strength and RMR v alues of foundation rocks, Karjan dam Fig.9. Pre and Post curtain grouting results of the Karjan dam spillway blocks foundations
A target strength of 20 MPa was set for the concrete cylinder specimens prepared in accordance with IS 12269:2013, utilizing Portland Pozzolana cement of Grade 53 [33].The material requirement for the preparation of concrete is listed in Table 1.Fine aggregate was composed of river sand from grading zone II with a fine modulus and …
Compressive strength was calculated Packet Num ge ve strength according to formula (1) ber (%) strength （MPa） （MPa） Fc max Ordina OC 0 36.09 （1） f cu 2.95 ry Ac BC1 0.3 32.78 3.03 Where; BC2 0.6 29.13 3.62 f cu is the cube compressive strength for the concrete, basalt BC3 0.9 35.87 2.62 fiber (MPa) BC4 1.2 29.5 2.37 PC1 0.3 33.25 ...
The hardness of Basalt is 6 whereas its compressive strength is 37.40 N/mm 2. Streak is the color of rock when it is crushed or powdered. The streak of Basalt is white to grey whereas its fracture is conchoidal. Luster of Basalt is the interaction of light with the surface of Basalt. Luster of Basalt is not available. Basalt cleavage is not ...
In this study, the compressive and splitting tensile strength was studied after introducing chopped basalt fibers. In this research, 12 mm long and 13 μm in diameter basalt fibers were used as well as the cubes and cylinders have casted with basalt fiber reinforced concrete for 0.5 %, 1.0% and 1.5% of basalt fibers by the weight of cement ...
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 …
Uniaxial compressive strength (UCS) of rock is an essential parameter in geotechnical engineering. Point load strength (PLS), P-wave velocity, and Schmidt hammer rebound number (SH) are more easily obtained than UCS and are extensively applied for the indirect estimation of UCS. ... Basalt (6), Deformed granite (4), Diabase …
6 AdvancesinMaterialsScienceandEngineering Fiber Clay particles (a) Fiber-soilcolumn Transmission and superposition of stress (b) Fiber-soilnet Figure6 ...
In this study, we investigated the buckling performance of basalt fiber reinforced polymer (BFRP) sandwich infill panels. Fiber Reinforced Polymer (FRP) is a major evolution for energy dissipation when used as infill material of frame structure, a basic Polymer Matrix Composite (PMC) infill wall system consists of two FRP laminates …
The results of the experiments showed that the breaking load of the reinforced beams increased by 17–50%, and the impact toughness increased 2.74 times compared to the reference sample. ... The results show that the addition of 6 to 12% basalt fiber improves compressive strength, tensile strength, and fracture toughness. …
[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 ...
Basalt fibers show exceptional tensile strength over E-glass fiber, higher breaking strength over carbon fiber, along with better resistance to chemical attacks, …
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 …
This paper provides result data of the compressive strength, and split tensile strength of basalt and polypropylene fiber reinforced concrete containing fibres' of 0%, 0.3%, 0.6%, 0.9%, and 1.2% ...
The 7 days compressive strength is having almost 55% to 64% of 28 days compressive strength for this basalt fibre reinforced concrete. This observation is similarly seen in split tensile strength test also. (ii) The compressive strength is found to be maximum of 36.67 N/mm 2 for the concrete having 1% of basalt fibre content. The …
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 …
Among them, compressive strength is the most important reference index in the mechanical properties of concrete, which significantly impacts the safe use of concrete. Therefore, the accurate and rapid prediction of the compressive strength of basalt fiber concrete (BFRC) has essential application value in practical engineering applications.
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 …
Uniaxial compressive test is used to determine uniaxial compressive strength, Poisson's ratio, and Young's modulus. Uniaxial compressive test is also ca lled unconfined compressive test.
The results illustrate that no-fiber columns sustain more than 50 % of the failure load before cracking, while this percentage raised to 75 % upon adding basalt fiber to concrete. 0.3 % of basalt ...
Xu et al. [22] initially used basalt fiber to develop ECC and investigated the mechanical performance of Basalt-ECC at ambient temperature, 0.85% tensile strain …
The concrete of the deep mine shaft lining often produces a phenomenon similar to rock-burst, and basalt fiber has good crack resistance and is widely used in engineering construction. From the perspective of concrete dynamics, this paper conducts dynamic tests on ordinary concrete and basalt fiber reinforced concrete (BFRC) by …
The strength loss rate of BF after 90 days of being saturated in an alkaline mixture might reach 80% . Figure 17 displays SEM pictures of the reaction products that …