The modulus of elasticity of concrete increased slightly due to the increased concrete's fillability when the concrete was mixed with improved basalt-based recycled aggregates. The highest modulus of elasticity of 23.1 GPa was observed when uniform fine aggregates were used at 28 days age.

Corkum, 2002). A related modification for estimating the deformation modulus of rock masses was made by Hoek and Diederichs (2006). This chapter presents the most recent version of the Hoek-Brown criterion in a form that has been found practical in the field and that appears to provide the most reliable set of

Introduction. The modulus of elasticity of concrete (E c) is associated with structural deformations that must be kept within limits to prevent excessive deformations that cause cracks and other pathologies in concrete structures.Coupled to strength, the elasticity modulus, denoting material stiffness, is one of the most important …

Abstract and Figures. This paper determines the effect of discrete fibers on the elastic modulus of concrete and cement composites. Five types of discrete fibers consisting of steel, polypropylene ...

Loading rate versus modulus of elasticity for basalt- Deviator stress versus strain curves for granite ... E Young fs modulus of elasticity E_j_ Tangent YoungTs modulus at one-half the ultimate compressive strength f^ Dynamic compressive strength factor G …

The explanation of very good elastic properties of the concrete with basalt aggregate and very poor elastic properties of the concrete with granite aggregate is quite obvious. The modulus of elasticity of basalt rock, over 100 GPa, is four times that of granite rock (Table 8 and Fig. 5). One can also assume that the fact that basalt does not ...

Basalt fiber (BF) is a novel kind of inorganic fiber which is manufactured from the extrusion of melted basalt rock and is commercially available. This study …

The composite contained 45 vol% basalt fiber with 90 thermal cycles and found higher adsorption storage modulus, elasticity, tensile strength, and flexural strength of 9200 GPa, 80 GPa, 229 MPa, and 398 MPa, respectively. The thermal adsorption loss modulus was limited by 12% on 90 thermal cycles at 150°C compared to 10 thermal cycles.

Basalt fiber (BF) is a novel kind of inorganic fiber which is manufactured from the extrusion of melted basalt rock and is commercially available. This study comparatively analyze the application of basalt and glass fibers as fiber reinforcement in high strength concrete. ... Modulus of elasticity is in range of 41,860–44,415 ...

TABLE II EXAMPLES OF EMPIRICAL OBSERVATIONS OF MODULUS ELASTICITY [2], [7]- [11] Designation Equation Validity EN Ec 22 fcm /10 0,3 EC 2 ACI 318 Ec c f c 0.043 1/5 USA ACI 318-08 Ec 4700 fc USA ACI 363R-92 Ec 3320 fc 6900 USA CSA A23.3-04 Ec 4500 fc Canada NZS 3106:2006 Ec 3320 fc 6900 New

Basalt micro-fibre in doses of up to 3 kg/m 3 does not have a significant effect on the compressive and tensile splitting strengths, as well as modulus of elasticity of concrete. This suggests that basalt micro …

View in full-text. Context 2. ... general, it can be stated that FRP bars and textiles made of carbon offer higher tensile strength and a higher Young's modulus when compared to the products made ...

[1] Understanding the elastic behavior of basalt is important to seismically monitor volcanoes, subsea basalts, and carbon sequestration in basalt. We estimate the elastic properties of basalt samples from the …

Basalt fiber (BF) is a novel kind of inorganic fiber which is manufactured from the extrusion of melted basalt rock and is commercially available. ... [22], [23]. Research conducted by Jin et al. [24] showed that the performance of dynamic modulus of elasticity and quality loss of BF concrete in freezing and thawing process is obviously better ...

Peak stress, peak strain, modulus of elasticity and damage level of heated concrete specimens were evaluated by experimental investigation. ... Surface damage and porosity level of concrete with carbon and basalt fibers were found to be lower than other FRC.,Empirical relationship was developed to determine the modulus of elasticity of …

For Jeju basalt, on the contrary, the modulus of elasticity was low compared with compressive strength because of high porosity with water absorption of approximately 3%. These results are similar to Jeju B-RA results; however, the slope of the trend line differed because of differences in the unit weight of cement.

The explanation of very good elastic properties of the concrete with basalt aggregate and very poor elastic properties of the concrete with granite aggregate is …

Typical Values of Young's Elastic Modulus and Poisson's Ratio for Pavement Materials Young's Elastic Modulus Poisson's Ratio Material (E or Mr), MPa (μ or ν) Asphalt concrete 0C 13500 – 35000 0,25 – 0,30 (uncracked) 20 C 2000 – 3500 0,30 – 0,35 60 C 150 – 350 0,35 – 0,40 Portland cement concrete 20000 – 35000 0,15 ...

When the bonding stress between basalt fibers and the concrete matrix was strong, the energy was not enough for fiber pull-out and breaking; thus, basalt fibers prevented crack propagation by a bridging action (Fig. 3(a)). When the bonding stress was. Calculation of the elastic modulus of basalt fiber–reinforced FAGC

Besides static mechanical tests, dynamic Young's modulus is often used to predict the static Young's modulus of rock (dynamic method). Since the 1930s, due to the application of wave propagation testing technology in mining, petroleum, and civil engineering, scholars began to study the relationship between dynamic and static elastic …

The basalt powder was synthesized with two different activators, i.e., sodium hydroxide (NaOH; abbreviated as NH) and liquid sodium silicate (Na 2 SiO 3; abbreviated as NS), having an initial silicate modulus (M s: SiO 2 /Na 2 O) of 3.3. Two different activator dosages were used, representing the lower and upper limits: the NH was used with two …

Basalt fibers, because of their high elastic modulus, better alkali resistance, low cost, and simple manufacturing process, are extensively used for the industrial …

Basalt was used as an ornamental stone in any historic and ancient cities in Jordan. Measuring the uniaxial compressive strength (UCS) and the tangent Young's modulus (Et) in the laboratory requires premium quality specimens with special core dimensions. This research focuses on correlations both UCS and Et with Leeb Rebound …

High values of the modulus of elasticity are probably connected with the high density of the tested timber pieces. Although the effect of density on the modulus of elasticity is not as marked as it had been expected, since r is only 0.53997 (Figure 5), the trend is clear. Presented values of density represent density determined at 12% humidity ...

3.4. Compressive Modulus of Elasticity. The comparison between the compressive elastic modulus test results of each fiber concrete test block and PC is shown in Figure 7. It can be seen that the compressive elastic modulus of each fiber concrete test block has a small change range compared with PC, and the maximum fluctuation range …

In addition, the density of basalt is about 1.3 to 2.75 g/cm 3, the tensile strength is between 2600 to 4840 MPa, and the range of the elastic modulus is 80–115 …

The main effects plots for elastic modulus are shown in Fig. 15. As shown in the figure, the addition of basalt and kenaf fibers increases the elastic modulus . The most important reason for this is the higher elastic modulus of basalt and kenaf fibers and the effect of force transfer from the soft polymer matrix to harder fibers . Also, as can ...

Results showed that tensile strength and modulus of elasticity of basalt laminates were 10% and 38% higher, respectively, than those of glass laminates. It was also found experimentally that confinement with BFRP was 14% more effective than that with GFRP in terms of compressive strength.

Model code has a value of 1.2 for basalt and dense limestone, 1.0 . for quartzite, ... The dynamic elastic modulus of concrete was tested using impulse excitation of vibration and the modal ...

Accordingly, the standard notched flexural tests have been carried out to assess the basalt fiber-reinforced concrete's residual flexural strength with an additional 0.125%, 0.25%, 0.375%, and 0.5% of volume …