Therefore, the purpose of this study is to predict the uniaxial compressive strength and modulus of elasticity basalts using three different prediction methods such as NLMR, ANN and ANFIS, and to compare the prediction performances using various performance assessment metrics.
For basalt rocks, Malik et al.12 investigated Deccan basalt rock and found the dynamic compressive strength between about 170 MPa and 260 MPa at a strain rate of about 400/s to 1600/s. Lindholm et al.13 found a much lower dynamic strength of about 110 MPa to 125 MPa at a strain rate of about 600/s and 1100/s for Dresser basalt rock.
Abstract and Figures 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...
Basalt often occurs in a large area of rock flow or crust, and sometimes in dikes, beds, stocks, basins, caps, dikes, etc. Basalt is characterized by a specific gravity of 2.7–3.3 …
Basalt, sometimes known as white, green, or blue basalt, is igneous rock. This stone is good and bad for construction because it is strong and rough. This roughness makes it difficult to use the granite for any purpose. It has a specific gravity of about 3 and compressive strength of 200 to 350 N/mm2 (2039 to 3569 kg/cm2).
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 rocks …
Basalt fiber (BF) is a type of high-performance inorganic fibers made from natural basalt by melt spunning at ~ 2700°F (1500°C). Unlike glass fiber production, no additives are added to the melt, which makes BFs environmentally benign besides their noncombustible and explosion-proof properties.
Basalt has a medium to fine-grained structure. These stones are basically used as road metals. It has a specific gravity of 1.8-2.9 and a compressive strength of 200-350 N/mm2. Basalt is mostly in dark grey to black in colour. Basalts are very hard and durable stones, it can resist weathering action and are impervious to moisture.
Basalt stones have a compressive strength of 100 to 300 MPa. Shear strength ranges from 20 to 60 MPa, whereas tensile strength ranges from 10 to 30 MPa. Density The density of basalt stones is quite high, as seen by the porousness of the rock. The basalt stones have a bulk density of 2.8 to 3 Magormegagram per meter cube.
The results show that the flexural strength and compressive strength of specimens with basalt fiber is higher compared with normal concrete. Also, by the …
In Table 3 the final results are summarised in terms of compressive strength of mortar joints ( f'j) and mineralogical components. It was shown that stone URM buildings in New Zealand typically consisted of weak structural mortar ( f'j =0.2−2.8 MPa) and stronger pointing mortar ( f'j =1.8−7.7 MPa). Download : Download full-size image Fig. 7.
compressive strength in mortar PCB was introduced. Investigation results show that the higher content of ground basalt stone and fine sand in blended portland cements, the lower compressive ...
Basalt is among the most used rocks as aggregate, ballast, ornamental stone and for other construction purposes. Therefore, the uniaxial compressive strength (UCS) and elasticity modulus (Ei) of intact rock are required to be known for several purposes. For this reason, the purpose of the present study is to develop various non …
The black basalt is a dark-coloured basalt stone that is rich in iron and a few other minerals. This is used in the textile industry as well as in building construction projects for fire prevention. ... Basalt stones have a compressive strength of 100 to 300 MPa. Shear strength ranges from 20 to 60 MPa, whereas tensile strength ranges from 10 ...
Basalt's high abrasion resistance, compressive strength, and chemical resistance make it an ideal rock for many industrial applications. Basalt fibers are superior to other fibers in terms of thermal stability, heat and sound insulation qualities, vibration resistance, and durability.
To verify its feasibility, sandstone, syenite, marble, and basalt aggregates were selected to test the mechanical properties and road performance of the four aggregate concretes at 7, 28, 90, and 180 days. The test results showed that although the sandstone slump was the lowest at 60, the workability met the requirement.
The basalt fiber permeable concrete test block is prepared by the cement-wrapped stone method: first add the coarse aggregate and basalt fiber to the mixer and stir for 30 s, then add water with a total water content of 20% and stir for 30 s, and finally add silica fume, cement and water reducing agent to stir 150 s ... Table 6 shows the test ...
In this research, the authors have developed an algorithm for predicting the compressive strength and compressive stress-strain curve of Basalt Fiber High-Performance Concrete (BFHPC), which is enhanced by a classical programming algorithm and Logistic Map. For this purpose, different percentages of …
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.
Granite Basalt Gneiss Schist Quart-zite Marble Lime-stone Sand-stone Shale Av. Co Max. Co Min. Co Range No. of samples 181.7 324.0 48.8 275.2 26 214.1 358.6 104.8 253.8 …
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 ...
Strength & Durability: The more compact grained and heavier a stone the harder it is. Due to alternate wetting and drying the resulting crushing strength can be reduced even up to 30-40%. Being dry stones allow more crushing strength than when wet. Table showing the relationship between weights and crushing strength.
They concluded that the estimation of compressive strength for basalt stone using rebound number and UPV in combined method was more reliable than using UPV or rebound number alone. …
6.1.7 Compressive Strength Flint ⊕ 37.40 N/mm2 Rank: 28 (Overall) Obsidian ⊕ 175 (Granite) ADD ⊕ 6.1.8 Cleavage Not Available 6.1.9 Toughness 2.3 6.1.10 Specific Gravity 2.8-3 6.1.11 Transparency …
In 2020, Wang et al. found that basalt fiber is beneficial to the improvement of the compressive strength of recycled concrete and that basalt fiber has a more significant effect on splitting tensile strength …
This compaction strength, Cc, is itself a function of porosity as well as mineralogy, diagenesis, and texture. In Figs. 4a and 4b, the behavior of two rocks under hydrostatic pressure is shown. The high-porosity (33%) sandstone ( Fig. 4a) has a low "crush" strength of about 55 MPa.
The Unconfined Compression Test is a laboratory test used to derive the Unconfirmed Compressive Strength (UCS) of a rock specimen. …
Compressive (Crushing) Strength Test, Flexural (transverse) Strength Test, Density and Porosity Test, Water Absorption Tests do for now the raw material properties of basalt …
Uniaxial compressive strength ( ... Clay schist / -stone 68 38 563 2 40 21 537 6 ... 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 ...
Another practice that is normally followed is to base the allowable pressure on the unconfined compressive strength, qu, of the rock obtained in a laboratory on a rock sample. A factor of safety of 5 to 8 is used on qu to …
The Unconfined Compression Test is a laboratory test used to derive the Unconfirmed Compressive Strength (UCS) of a rock specimen. Unconfirmed Compressive Strength (UCS) stands for the maximum …
admixtures (PGKTN) such as basalt stone and fine sand. In general, a higher content of natural mineral admixture, a lower compressive strength of blended portland cement. Influence level...
To achieve this objective, three aggregate types, syenite, marble, and basalt aggregates, were selected and compared with sandstone aggregates by mechanical properties according to the compressive strength test, tensile elasticity modulus test, and axial tensile strength test.
Basalt often occurs in a large area of rock flow or crust, and sometimes in dikes, beds, stocks, basins, caps, dikes, etc. Basalt is characterized by a specific gravity of 2.7–3.3 g/cm 3, porosity of 1.28%, weathering resistance, compressive strength up to 3000 kg/cm 2 and hexagonal columnar joint development; it is easy to exploit.
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 …
Basalt crushing process 1 Primary crushing: Basalt raw ore is evenly fed into the silo by the vibrating feeder and transported to the jaw crusher for coarse crushing. 2 Secondary crushing: Basalt materials (≤150mm) are sent to the cone crusher by belt conveyor for further crushing.
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: …