Compressive strength prediction of basalt fiber reinforced …
Download Citation | Compressive strength prediction of basalt fiber reinforced concrete via random forest algorithm | Basalt fiber is a green non-polluting material with strong tensile mechanical ...
اقرأ أكثر
Dynamic compressive properties of Kalgoorlie basalt rock
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.
اقرأ أكثر
The porosity and engineering properties of vesicular basalt …
The presence of non-connected vesicles in extensive basalt flows in western Saudi Arabia greatly affects their engineering properties such as compressive strength, modulus of elasticity, Poisson's ratio and sonic velocities. In order to evaluate some of these properties, the density and/or the porosity of the material must be known.
اقرأ أكثر
Improving compressive strength of fly ash-based …
In this study, ASTM Class C fly ash used as an alumino-silicate source was activated by metal alkali and cured at low temperature. Basalt fibers which have excellent physical and mechanical properties were added to fly ash-based geopolymers for 10–30% solid content to act as a reinforced material, and its influence on the compressive strength of geopolymer …
اقرأ أكثر
Compressive strength of lightweight expanded polystyrene basalt …
The concrete without fiber showed the best compressive strength followed by the concrete with dispersed polypropylene fiber. ... • Hard chopped basalt fiber of diameter 1 milli meter = 42 grams ...
اقرأ أكثر
Empirical models for compressive and tensile strength of …
To determine the compressive strength (CS) and tensile strength (TS) of basalt fiber reinforced concrete (BFRC), this study will develop empirical models using gene …
اقرأ أكثر
Compressive Strength of Rocks
The compressive strength of a rock is the maximum stress that it can withstand before it fails when subjected to a compressive load. Compressive strength is an important property of rocks in many engineering applications, such as the …
اقرأ أكثر
Estimating the compressive and tensile strength of basalt …
Basalt is a dark, fine-grained volcanic rock produced when lava rapidly cools and hardens on the Earth's surface. It mainly consists of minerals like plagioclase, pyroxene, and olivine [17].Basalt fibres (BFs) were pioneered by the Moscow institute of glass and plastic between 1953 and 1954, following thirty years of research conducted by the former Soviet Union.
اقرأ أكثر
Strength and deformation properties of granite, basalt, …
Results of the unconfined compressive strength tests on basalt indicated that as the loading rate was increased from 1 to 1.60 x 107 psi/sec, ultimate strength, total axial strain, and Young's …
اقرأ أكثر
Strength and deformation properties of granite, basalt, …
The dynamic compressive strength factor for the granite was less than l; for the basalt, 1.35; for the limestone, 1.52; and for the tuff, 1.74. The compressional wave velocity of rock is affected by increases in both the applied axial stress and confining pressure.
اقرأ أكثر
Estimation of Compressive Strength of Basalt Fiber …
Background: In this study, the unconfined compressive strength (qu) of a mixture consisting of clay reinforced with 24 mm-long basalt fiber was estimated using extreme learning machine (ELM). The aim of this study is to estimate the results closest to the data obtained through experimental studies without the need for experimental studies. The literature review …
اقرأ أكثر
Strength, durability and finite element analysis of hybrid jute/basalt …
It is evident that from the comparison of CFJ2B3 and CFJ2B2, the CFJ2B3 is showing only a marginal increase of 7.3 % with respect to CFJ2B2 in compressive strength by introducing an additional basalt layer. Thus, from an economical and performance perspective, CFJ2B2 wrapping was selected as the optimum for further analysis.
اقرأ أكثر
Studies on strength properties of basalt fibre reinforced …
The experimental test results of compressive strength and split tensile strength are showing on the table 3 against various volume fractions of basalt fibres such as 0%, 0.5%, 1%, 1.5%, 2%, 2.5% and 3% against the age of curing 7 days and 28 days. Fig. 5 shows, the 7 days compressive strength is having almost 55% to 64% of 28 days compressive strength for the …
اقرأ أكثر
Experimental Study on Unconfined Compressive Strength of Basalt …
In order to study the mechanism and effect of basalt fiber reinforced clay soil, a series of unconfined compressive strength tests conducted on clay soil reinforced with basalt fiber have been performed under the condition of optimum water content and maximum dry density.
اقرأ أكثر
Engineering, Mechanical and Dynamic Properties of Basalt …
From the results of the modal test, as shown in Table 7, and the compressive test, as presented in Table 4 and Figure 4, the compressive strength and dynamic MOE have shown a similar trend when the volume fraction of basalt fiber is increased continuously, with M 2 (0.25%) showing the highest compression and dynamic MOE value.
اقرأ أكثر
Estimation of compressive strength of various stones based …
This work examines the compressive strength of natural stones, as estimated by Uniaxial compressive strength tests (UCS) and respective non-destructive tests results (Schmidt Hammer Rebound test, SHR, or an Ultrasonic Pulse Velocity transmission, UPV). In practice, aiming to correlate the values of the UCS test with the results of the NDT techniques, three …
اقرأ أكثر
Dynamic Split Tensile Strength of Basalt, Granite, Marble …
The aim of this study is to understand the strength behaviour and fragment size of rocks during indirect, quasi-static and dynamic tensile tests. Four rocks with different lithological characteristics, namely: basalt, granite, sandstone, and marble were selected for this study. Brazilian disc experiments were performed over a range of strain rates from ~ 10–5 /s to 2.7 × …
اقرأ أكثر
Rock mass properties
uniaxial compressive strength σci of the intact rock pieces, value of the Hoek-Brown constant mi for these intact rock pieces, and value of the Geological Strength Index GSI for the rock mass.
اقرأ أكثر
Experimental Study of the Compressive Strengths …
The dynamic compressive strength of basalt fiber-reinforced concrete was bigger than that of ordinary concrete. The rapid development of modern society has increased the demand for high-performance geo …
اقرأ أكثر
Compressive Strength of Rocks
Explore a comprehensive table of compressive strength values for different rocks in both SI (MPa) and US customary (psi) units.
اقرأ أكثر
Improving Compressive Strength Of Fly Ash-Based
The compressive strength of fly ash-based geopolymer matrix without basalt fibers added samples aged 28 days was 35 MPa which significantly increased 37% when the 10 wt.%. basalt fibers were added.
اقرأ أكثر
Unconfined Compressive Strength Characteristics of …
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 ...
اقرأ أكثر
Numerical simulation of strength of basalt fiber permeable …
Table 6 shows the test results of 28d compressive strength of basalt fiber permeable concrete. The results show that with the addition of basalt fiber, the compressive strength increases in different degrees.There is a positive correlation between fiber length and compressive strength, mainly because with the increase of basalt fiber length,The ...
اقرأ أكثر
Empirical models for compressive and tensile strength of basalt …
Introduction. Basalt fibers (BF) are produced from the basalt rocks which are formed because of volcanic lava solidification. BF are abundantly found on earth due to their volcanic origin 1, 2.BF have higher viscosity and resistivity of temperature shifts from low to high which ascribes higher Compressive Strength (CS) and durability 1.Micrograph Analysis show that BF have good …
اقرأ أكثر
Properties of Basalt
Explore a comprehensive list of basalt properties in both SI and US customary units at normal temperature and pressure (NTP).
اقرأ أكثر
Fresh, mechanical, and durability properties of basalt fiber …
The compressive strength increased by about 10% at a fibers dose of 2% compared to the control mix. However, the further increase in BF dosage to 2.5% and 3% showed a negative impact on the compressive strength, where the compressive strength dropped by about 12% and 21%, respectively.
اقرأ أكثر
STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES
between strain hardening and softening is called the unconfined compressive strength of the rock and is denoted as Co or qu. Failure takes place continuously from C to D during which ... 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 ...
اقرأ أكثر
(PDF) Assessing the uniaxial compressive strength …
Measuring the uniaxial compressive strength (UCS) and the tangent Young's modulus (E t) in the laboratory requires premium quality specimens with special core dimensions. This research focuses...
اقرأ أكثر
Unconfined Compressive and Splitting Tensile Strength of Basalt …
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 ...
اقرأ أكثر
Construction with Regolith
• Compressive strength : ~20 - 40 MPa (~3000 - 6000 psi) Typical properties of Basalt rock are: • Density : 2630 +/- 140 kg/m3 (164 lb/ft3) • Compressive strength : ~144 - 292 MPa (20,885 –42,351 psi) Basalt rock can be 4-7 X stronger in compression than normal Portland cement concrete typically used on Earth.
اقرأ أكثر