ABSTRACT:. The presence of vesicles within basalt has a negative impact on both the unconfined compressive strength (UCS) and deformation modulus (axial stiffness) of basalt specimens. Vesicular basalt specimens (diameters of 44.45 mm) were cored from surface boulders obtained from southern Nevada. Each basalt boulder has …
The increase in compressive, splitting tensile, flexural strength and elastic modulus of concrete at 28 days having 0.5% volume fraction (13 kg/m 3) of basalt fibre was in the order of 26.79, 42.71, 44.06 and 35.23%, …
Compressive test results showed basalt fiber could increase compressive strength at elevated temperatures. The optimal basalt fiber volume fraction was 0.8%, …
Corpus ID: 55787158; Numerical Study for Compressive Strength of Basalt Composite Sandwich Infill Panel @article{Sim2017NumericalSF, title={Numerical Study for Compressive Strength of Basalt Composite Sandwich Infill Panel}, author={Viriyavudh Sim and Jung-Kyu Choi and YongJu Kwak and Oh Hyeon Jeon and Wooyoung Jung}, …
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. The test results show that …
The 15 wt% basalt fibers added to geopolymer composites aged 7 days has shown the highest compressive strength at 47 MPa with the Ca/Si ratio=1.3 (Fig. 10), whereas the 10 wt% basalt fibers added to geopolymer composites at 28 days aged has shown the highest compressive strength of 48 MPa with the Ca/Si ratio=0.97 (Fig.11). …
The propagation speed of waves in rocks and soils is closely related to their mechanical behaviors [32,33].Measuring the change in P-wave velocity (V p) to evaluate freeze–thaw damage is a non-destructive technique [34,35].Takarli and Prince [] found that freeze–thaw damage can cause a decrease in V p of granite and pointed out that this …
After the sulfate erosion test, the compressive strength of OC and BFRC was obtained through the standard compressive strength test according to the Standard Test Method for Mechanical Properties of Ordinary Concrete (GB/T 50081–2021) [23]. A total of 160 specimens were tested by YAW-300 electro-hydraulic servo pressure test …
The result of XRD analysis of basalt rock in Sukadana, East Lampung As seen in Table 3, Sukadana Lampung Timur's basalt rock is dominated by silica (SiO2) of 44,651%.
Comparing this result to Kirthika and Singh's [9] results, they found that 0.5% increased compressive strength by 26.8%. Also, Dilbas and Cakir [15] found that 0.25% of basalt fibers (BF) awarded ...
that 3% content of activated carbon and coir ber can signicantly improved the compressive strength, while 2% content can remarkably enhanced the shear strength of lateritic soil. Soleimani-Fard et ...
While the dynamic compressive strength of sandstone was reduced by 8% and 17% after being treated at 3 kW and 5 kW for 90 s, respectively [37]. Although a higher power level is used, the dynamic compressive strength of sandstone after microwave treatment is significantly lower than that of basalt.
The cumulative acoustic emission quantity and energy released when the columnar jointed basalts (CJBs) reach their strength under compression are important …
New correlations between uniaxial compressive strength and point load strength of basalt ... evaluate new correlations between point load strength index I s.50 and UCS of basalt. Correlations were ...
As shown in Eq.3 and Eq.4. 6.2. Compressive strength (CS) of UHSFRC with S f by ANNs model. As illustrated in Fig. 2, the ANNs model has built three layers: input, hidden, and output layers. This ANN system was solved using input–output and curve-fitting techniques in MATLAB R2017b software.
As can be seen from Fig. 8, the density and strength of the test with basalt fibers are directly proportional to the added fibers and content, and the density of the specimens from small to large was 1.109 g/cm 3, 1.110 g/cm 3, 1.115 g/cm 3, and 1.118 g/cm 3; the specimens' compressive strength from small to large was 6.37, 6.48, 6.58, …
Tamassoki et al.22 stated that 3% content of activated carbon and coir fiber can significantly improved the compressive strength, while 2% content can remarkably enhanced the …
Volcanic rocks from the Bodrum Peninsula have been studied to establish a relationship between the uniaxial compressive strength (UCS), Young's modulus (E) and Schmidt hammer rebound number (N ...
Fig. 1 shows the cut-out sections of size 100 mm by 100 mm of Kevlar/Basalt and Kevlar/Glass fibre composite laminates for various intra-woven namely, 1 × 1, 3 × 3 and 5 × 5 respectively. The absorbed energy is determined with the help of the load Vs displacement curve [17], [18].The load at peak signifies the maximum load that …
This paper analyzes the compressive stress-strain behavior of three mix types of high-strength fiber-reinforced concrete (HSFRC) having compressive strengths of 70–85 MPa and containing 1–3% ...
Increasing the content of basalt fibers to a certain extent can enhance the compressive strength of RAC, but it also significantly increases the variability of material performance. Additionally, the minimum compressive strengths of these three sets of specimens are 19.3, 19.7, and 21.0 MPa, respectively, indicating that the influence of …
s i z e d o e s n o t s i g n i f i c a n t l y a f f e c t c o m p r e s s i v e s t r e n g t h o f P S C w i t h e q u a l d e n s i t y f r o m 1, 4 0 0 kg/ m ³ t o 2, 000 k g / m ³ .
The uniaxial compressive strength test is used to determine the maximum value of stress obtained before failure. The determination of this parameter was carried out on specimens with dimensions 7 × 7 × 7 cm along two orthogonal directions (side A–side C), in order to identify possible anisotropies which were not identified by the test of water absorption by …
The compressive strength of the compressive strength of BF0.1PF0 is 0.35% lower than that of BF0PF0 without fiber. The compressive strength of BF0PF0025 is 5.22% lower than that of BF0PF0. A similar result has been reported for the compressive behavior of basalt fiber in high-strength concrete [2]. This similarity may be due to …
Wang and Zhang conducted a study using crushed basalt reinforced concrete with a length of 30 mm and various amounts of cement to determine mechanical properties, compressive strength, crack resistance, and flexural strength of concrete blended with 0.1%, 0.15%, 0.2%, 0.25%, 0.3% and 0.35% of basalt fibres. It was …
UCS experiments were performed on dry specimens at room temperature by testing three cores (52 mm length and 26 mm diameter) from each of the eight original sample blocks as well as three thermally stressed cores from seven sample blocks. ... Overall, axial compressive strength for Pacaya basalt ranges widely from 12 to 174 …
highest compressive strength value of 28.331 kgf/mm2 was obtained from the various parameters of 270 mesh-20% polyester- 1/20 catalyst and 270 mesh-25% polyester-1/30 catalyst.
A long-term foundational study aimed at developing a thermodynamic database for continuous basalt fiber systems is in progress. In this work, the equilibrium phase relations of the SiO 2 –Al 2 O 3 –Fe 3 O 4-5 wt.% CaO system at 1400 °C in air atmosphere were determined experimentally using the equilibrium-quenching …
Alkali-activated basalt powder/slag systems: compressive strength and microstructural characterization Busra Akturk . Bilal Umut Ayhan Received: 18 September 2022/Accepted: 2 April 2023/Published online: 25 April 2023 ... Basalt powder 40.3 12.0 17.3 – …
The effect of pre-damaged levels (i.e., first preloaded to + 100, −90, and −80 % of the axial compressive strength (f' co) of the plain concrete prisms) and the number of BFRP composites (i.e., 1-, 2-, 4-, and 6-layer) on the compressive strength, deformation capacity, and initial elastic modulus of BFRP-repaired concrete was investigated ...
Volcanic rocks from the Bodrum Peninsula have been studied to establish a relationship between the uniaxial compressive strength (UCS), Young's modulus (E) and Schmidt hammer rebound number (N). Test results obtained on andesites, basalts and tuffs have been assessed statistically and the parameters obtained correlated. Regression …
BF at 1.0% volume fraction caused an increase of 8.92% on the compressive strength within 28 days [26]. Another study reported that the BFRC's compressive strength was 4.22% higher than that of plain concrete at a fiber content of 0.3% volume fraction [1]. Ac-
When the basalt fibres are increased beyond 1.5%, the compressive strength has subsequent reduction such as 16.48%, 25.26% and 33.87% for the basalt fibre content 2%, 2.5% and 3% respectively. This may be happen due to the bunching effect of the fibre content, compaction issues, lacking of bonding effect between concrete …
Conducted by U. S. Army Engineer Waterways Experiment Station C O R P S
The axial compressive behavior of Ultra-High Strength Concrete (UHPC) columns reinforced with basalt bars was investigated in this work. Only a few research projects have used basalt Reinforced Concrete Columns. Under axial stress, 12 columns of 150 × 150 mm in cross section and 1200 mm in height manufactured of M120 grade …
The test results show that both the unconfined compressive strength (UCS) and splitting tensile strength (STS) at a given basalt fiber content increase significantly with increasing calcite content, whereas the axial strain of the peak failure state decreases with increasing calcite content.
