The dynamic compressive strength of basalt fiber-reinforced concrete was bigger than that of ordinary concrete. Download Full-text Study on Damage Characteristics of …

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.

Test results indicated that hybrid fibers can effectively improve the compressive strength of concrete; that the maximum increases in compressive strength of C30, C40, and C50 concrete were 9.18%, 5.06%, and 7.13%, respectively; and that the effect of basalt fiber on compressive strength was greater than that of polypropylene fiber.

Compression test Compression strength of concrete with and without basalt was conducted. The compression test was conducted as per IS 516 – 1959. The specimens were kept in water for curing for 7 days, 14 days and 28 days and on removal were tested in dry condition and grit present on the surface. The load was applied without shock

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, which denotes that depending on the mineral makeup, basalt rocks fall in the strong – very strong category.

compressive strength of Plain Concrete is observed as 14%. The percentage increase of split tensile strength of basalt fiber concrete mix compared with 28 days compressive strength of Plain Concrete is observed as 62%. The flexural strength of basalt fiber concrete is also found have a

compressive strength of concrete. Ruiz (1966) found that the compressive strength of concrete increases with an increase in coarse aggregate content until a critical volume is reached, while Bayasi and Zhou (1993) found little correlation between compressive strength and coarse aggregate content.

The compressive strength increased, as the dosages of basalt fibres rises, reaching its maximum value of 0.1% and then it gets reduced may be due to increase the dosages of basalt fibre in mixture which produces voids that results in reduce the interfacial zone between basalt fibre and other constituent of concrete.

Experimental Study on Unconfined Compressive Strength of Basalt Fiber Reinforced Clay Soil LeiGao,GuohuiHu,NanXu,JunyiFu,ChaoXiang,andChenYang Key Laboratory of Geomechanics and Embankment Engineering, Ministry of Education, Hohai University, Nanjing, China Correspondence should be addressed to Lei Gao; [email protected]

compressive strength of basalt-carbon hybrid composite. In this study, we have observed the following. The experimental results of this study confirmed the angle ply orientation effect on compressive strength of basalt-carbon hybrid composite. Higher compressive strength and modulus were obtained when carbon fiber layers were stacked at the

The fiber content is varied in the range of 0–2%. The main parameters investigated are workability, compressive strength, splitting tensile strength, flexural strength, and flexural toughness. Test results showed that the compression strength of concrete decreased marginally with the addition of basalt fibers in comparison with plain concrete.

The test results are shown in the following table V. TABLE V COMPRESSIVE STRENGTH OF BASALT FIBER SPECIMENS Compressive Strength (N/mm2) BASALT FIBER (kg/m3) 3 days 7days 28 days 0 19.3 25.1 35.4 1 20.37 25.67 36.5 2 21.6 27.75 38.4 4 22.2 28.89 40.2 Fig: 2 Compressive strength of basalt fiber specimens The figure 2 indicates the comparison of ...

compressive Strength increased as the percentage of basalt content in the mix is increased. TABLE 1.Curing days for compressive strength test results for M 50 grade concrete mix in N/mm2 S.No: of Curin g Days % of Compressive strength (N/mm2) 0 % basal t 25 % basal t 50 % of basal t 75 % of basal t 100 basal t 1 3 29.81 33.39 36.10 39.88 42.18

Compressive strength, workability, specific gravity, Los Angeles abrasion tests were performed to evaluate the performance of basalt aggregate in concrete mixes. The test results concluded that concrete mix with basalt aggregate are more workable than limestone aggregate and also the higher strength is obtained by the introduction of basalt ...

Uniaxial CompressiveUniaxial Compressive Ranges for some Strength Ranges for some Common Rock Material Term Kg/cm 2 Schist, Silt stone Very Weak- VW < 70 VW-W, Sand Stone, Lime stone –VW-M,Granite, Basalt Gneiss Weak- W Medium Strong-MS 70-200 200-700 Basalt, Gneiss, Quartzite, Marble –MS-VS Medium Strong Strong- S Very Strong- VS 700-1400 ...

fiber was found to increase compressive strength of concrete. Scanty literatures are available for generalizing the effect of basalt fiber on compressive strength behavior. In the present studies, basalt compressive behavior has been characterized for a composite for four different volume fraction Vf of 0.3%, 0.5%, 1% and 2%.

The addition of basalt fibres in high strength concrete decreases the 7 and 14 days strength but the strength increases more than the design mix after 28 days [1]. About 83 to 92% increase in compressive strength was observed when basalt fibres are introduced in the concrete. Similarly 40 to 50% increase in flexural strength was

Mar 23, 2015· 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, which denotes that depending on the mineral makeup, basalt rocks fall in the strong – very strong category.

UHPC is generally a blend of silica fume, fine graded sand, steel fibre, Portland cement etc. The material features a high compressive strength of more than 150 MPa and good tensile performance due to fibre reinforcement . To achieve the high compressive strength, the water to binder ratio should be well controlled below 0.2 in the UHPC binder.

The compressive strength and density for ECC were 65 MPa and 2107 kg/m 3 respectively. ... The density and tensile strength of the basalt textile were 120 g/m 2 and 658.7 MPa. 2.3. Test setup. The specimens were subjected to uniaxial loading as shown in Fig. 3. The bottom of each specimen was fixed to the plates of the machine with the ...

The results of the analysis show that concrete made from alluvial sand (BSS) has very good compressive strength (33.72 MPa at 28 days) followed by concrete made with crushed basalt …

A study of strength and deformation measurements for basaltic rocks, along with ... tensile strength, −14.5±3.3 MPa; unconfined compressive strength, 266±98 ... Basic Rock Mechanics Basalt: 2.65 x 1000 kg/m3 = 2650 kg/m3 ... ' Compressive strength ' is the maximum force that can be applied to a rock sample without breaking it.

The strength properties of basalt fiber–reinforced biocemented (BFRB) sand specimens with various calcite contents and fiber contents are investigated through a series of unconfined compressive and splitting tensile tests.

compressive strength,split tensile strength,flexural strength of basalt chopped strands fiber in six different contents,according to 0%, 0.5%, 1.0%, 1.5% 2.0%, 2.5% of the cubic content of mixing using different curingmethods adopted.All specimens are made under IS code standard laboratory[8-10,11].

Table 2. Mean tensile strength and compressive strength for selected sedimentary rock types (after Johnson and Degraff, 1988). The behavior of intact rock in the post-peak dom ain is not a true rock property and is partially dependent on the stiffness of the loading system. A …

The compressive strength of the material would correspond to the stress at the red point shown on the curve. In a compression test, there is a linear region where the material follows Hooke's law.Hence, for this region, =, where, this time, E refers to the Young's Modulus for compression.In this region, the material deforms elastically and returns to its original length when the stress is removed.

form. Results of the unconfined compressive strength tests on basalt y indicated, that as the loading rate was increased from 1 to 1.60 x 10 psi/sec, ultimate strength, total axial strain, and Young's modulus of elasticity increased. Total diametral strain decreased as load­ ing rate was increased. Results of triaxial tests indicated that the

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 …

Rock mass strength is defined by three parameters including unconfined compressive strength of intact basalt and two others related to the degree of fracturing of the material. Experimental results for elevated temperature extend the applicability of these parameters to the near-surface environment of Venus.

However, the addition of basalt fibers from 15 to 30 wt% has not shown a major improvement in compressive strength. In addition, it was found that the compressive strength was strong relevant to the Ca/Si ratio and the C-S-H phase in the geopolymer matrix as high compressive strength was found in the samples with high Ca/Si ratio.

It is of great important that the compression strength of concrete is known in construction. The types of aggregate used in the concrete have great effect on the compression strength of the concrete. This paper looked into the compression strength of basalt fiber reinforced concrete when it bears expanded clay as aggregate and when it bears the usual gravel as aggregate.

ARMA 08-207934 Кб. Young's Modulus 12 Basalt (I50) 0 to 15 Point Load Index, I50 (MPa) Empirical relationships to assess rock mass modulus based on intact rock strength (uniaxial compressive strength, qu) have been proposed by a number of authors [eg.

Abstract Although the mechanical and physical properties of many rocks have extensively been studied, little work is reported on basalt rock. This paper discusses the interrelationships between the mechanical and the physical properties of the basalt rock. Laboratory tests were conducted on rock cores collected from over 22 locations within the Mumbai city limits.

Mechanical properties. Basalt fiber are similar to glass fibers regarding with specific weight of 2,6g/m 3, however are characterized by 20% higher mechanical properties such as tensile and compressive strength, rigidity, E-Modulus and excellent resistance to chemical environment.Basalt fibers provide 10% higher absorption of electromagnetic radiation and absorption of forces.

Abstract - This research investigates the effect of basalt fibers (BF) on the workability and early-age compressive and splitting tensile strengths of concrete made with recycled concrete aggregates (RCA). The target concrete compressive strengths were 30, 45, and 60 MPa, whereas the basalt fibers had a length of either 20 or 43 mm.