Thus, investigating the crushing mechanism of rock is a remarkable means and significance to guiding engineering applications and enhancing construction efficiency. The SHPB was identified as one of the ideal devices to test the impact mechanical properties of rock [7], [8]. In recent years, national and international scholars have …
Kishore et al. [61] tested the basalt replacement of coarse aggregate at a rate of 0% to by steps of 25% increments and found that the utilization of basalt increased the compressive strength ...
This manuscript proposes a strength and ductility of reinforced concrete (RC) using basalt fibre-reinforced polymers (BFRP). The lightweight materials like fibre-reinforced polymers (FRPs) are providing superior structural performance and durability in reinforced concrete members over traditional materials. Due to its light weight property, they are …
Basalt fiber (BF) is a typical silicate fiber with outstanding high temperature resistance, good compatibility with cement and concrete, superior mechanical properties and high chemical stability [1,2,3].The manufacturing process of BF consumes less energy and no additives, which makes it cheaper than glass or carbon fiber [].Basalt fibers have been used as …
Basalt.—The class covers intrusive igneous rocks essentially of basic chemical composition, and containing as dominant minerals plagioclase felspar, augite and olivine. They are specially interesting from a crushing standpoint because of their wide distribution, and varied range of composition, structure and degree of alteration.
1 day agoIn the particle crushing stage, the area proportion of the crushed particles was similar, and the vitreous basalt particles still comprised the main part of the particle …
Particle size distribution of aggregates after crushing: (a) basalt 1; (b) basalt 2. It was observed that for the rock aggregates with a h igh content of tuffs and consist-
Many physical properties of basalt have been measured in the field and laboratory, making it one of the best-characterized rock types. The physical properties of basalts vary greatly because of the range of textures and compositions. ... The crushing strength and cohesive strength of cold basaltic rocks are 170–220 ...
The existence of basalt fiber as reinforcement in concrete increases the ability of concrete to resist impact cracking. BFRC with 0.26 % basalt fiber volume has higher dynamic compressive property and energy dissipation rate, but the fractal dimension of BFRC is the smallest compared with other contents. The stress–strain curves and …
STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. TESTING OF INTACT ROCK FOR STRENGTH 2.1 Uniaxial Compression 2.2 Point Load Testing 2.3 Uniaxial Tension 2.4 Indirect Tension Tests 2.5 Shear Tests 2.6 Confined Compression Tests (Triaxial Tests) 2.7 Biaxial and Multiaxial Tests 2.8 Other Tests 3. …
More profoundly, basalt aggregates with a higher tuff content and weathering degree have a higher degree of crushing. The present study, in this context, provides accurate and …
Generally, the improvement of fiber reinforced concrete from ordinary concrete includes flexural strength, spitting strength, compressive strength, elastic modulus, crack …
The optimum percentage of basalt fiber is decided by the mechanical properties of the concrete using varying proportions of basalt fiber such as 0.3, 0.6, 0.9, and 1% . Basalt fiber has 6mm length, 16 µ m diameter, 4200MPa of tensile strength, and 95GPa of elastic modulus is used in this research.
Basalt is a finely granulated igneous rock, which is usually black or gray in color. Most basalt rocks are primarily composed of the minerals pyroxene and feldspar. These rocks are formed due to lava flow. It is a type of rock …
Crushing strength is helpful at assessing frost durability of igneous rock aggregate. • Igneous rock aggregate with weathered minerals is freeze-thaw and alkali …
From the grain size distribution analysis, the rock crushing of basalt 1 in the product after crushing increased the proportion of non-flaky and cubical grains compared to the original sample (except for the coarsest grain class) from about 60 to about 80%, which was associated with a general decrease in the content of especially non-flaky non ...
The high-temperature impact test was carried out on basalt fiber reinforced geopolymer concrete (BFRGC) using the high-temperature split Hopkinson pressure bar test system at 25 °C–800 °C, and the effects of temperature and basalt fiber on the dynamic mechanical properties of geopolymer concrete (GC) were studied.
The physical properties of basalt and limestone aggregates meet the Chinese standard specifications (JTG F40-2017) for the construction of highway asphalt pavements, as shown in T able 2 . T able 1.
3.2 Results and discussion. Two types of failure modes were observed for the RBFRC beams: (1) flexural failure characterized by the crushing of basalt FRC in compression zone with the apparent yielding plateau, i.e., beams RBFRC16 with smaller reinforcement ratio of 1.17%, and (2) flexural-shear failure characterized by the …
Many types of crushed stone: Crushed stone is not a "standardized commodity." It is made by mining one of several types of rock such as limestone, granite, trap rock, scoria, basalt, dolomite, or sandstone; crushing the rock; and then screening the crushed rock to sizes that are suitable for the intended end use.
The long-term impact on creep, drying shrinkage, and permeation characteristics of an innovative concrete produced with manufactured geopolymer coarse aggregate (GPA) has been investigated and compared with quarried Basalt aggregate concrete. Microstructure and pore-structure development up to 1 year were examined …
The use of basalt fibres to improve the hardened properties of concrete has increased in recent times. The incorporation of these fibres into concrete results in a …
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. It is the ability of a stone to endure and maintain its essential and distinctive characteristics i.e. resistance to …
Basalt ore mining, crushing and particle size control, as well as furnace structure, refractory materials, thermal process, melting system and other factors have an important impact on the homogeneity of basalt melt. ... The diathermal property of basalt glass melt has an important influence not only on the basalt melting but also on the ...
Basalt powder is a by-product of basalt stone crushing plant. It is a big problem to propose utilization of these by-products from the aspects of disposal, environmental pollution and health hazards. ... The chemical compositions and physical properties of basalt powders are measured according to the related specification of …
When basalt aggregates are used as crushed-stone, the flakiness rate is found relatively high due to their glassy structure. On the other hand, basalt aggregates …
The properties of FRP bars contribute to better performance in concrete structures particularly in beams [30].The overall flexural strength of FRP reinforced concrete beams increases with increase in compression capacity of concrete, elastic modulus of FRP, and reinforcement ratio in tensile region [29].The lower axial stiffness of FRP …
properties of the aggregates are given in table 1.0 and Figure 1-3 depict the sample of the three aggregate type used. Table-1: Physical property of aggregates S/N Properties Granite Gneiss Basalt 1 Specific gravity (SG) 2.52 2.83 3.0 2 Water absorption 2% 1.6% 1.6% 3 Aggregate impact value (AIV) 20.3% 22.38% 25.4% 4 Aggregate crushing value …
Mechanical Properties of Crumb Rubber and Basalt Fiber Composite Modified Porous Asphalt Concrete with Steel Slag as Aggregate. Chao Chai, Yongchun Cheng, ... The crush value is a measure of the ability of stone to resist crushing under the condition of gradual loading, and it is used to evaluate the applicability of aggregates in …
1. Introduction. With the progress of science and technology, various new composite materials have been developed rapidly. Among them, basalt fibers are widely used due to their low price and superior properties [1].Incorporating a certain amount of basalt fiber into traditional plain concrete can significantly improve the compressive, …