The compressive strength measurements were conducted at the sample ages of 3, 7, 28, 56 and 90 days; whilst, the ultrasonic pulse velocity was measured at 28 days. The result of HSC's compressive strength with the chopped basalt fibre did not show any improvement; instead, it was decreased.
2.1 Materials. The 28d compressive strength of concrete specimens without BF was designed to be 30 MPa, and the concrete mix proportions were determined based on the Specification for mix proportion design of ordinary concrete (JGJ55-2016) [].Specifically, the raw materials include cement, water, fine aggregates, coarse …
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, …
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 …
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 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 …
This study reveals that the CSW and BF content profoundly influences concrete's compressive strength. An increasing trend in strength is observed with the …
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 …
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% ...
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 …
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). …
Porosity is a significant physical feature of rocks due to water absorption that causes decrease in the strength. The basalt of the study area can be described as "highly porous" and ignimbrite as "extremely porous" according to the classification by Anon (1979).The average UCS of basalt is determined as 26.65 MPa.For the ignimbrite, the …
Measuring the uniaxial compressive strength (UCS) and the tangent Young's modulus (E t) in the laboratory requires premium quality specimens with special …
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 ...
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 …
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 …
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}, …
1. Introduction. The ocean covers approximately 71 % of the Earth's surface area and is rich in resources. In recent years, the development and utilization of marine resources have attracted global attention, and the construction of oceans and islands is inherently linked to civil engineering [1, 2].However, islands and reefs, often distant from the mainland, lack …
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%, …
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.
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 ...
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 …
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.
[8] Arivalagan S 2012 Study on the compressive and split tensile strength properties of basalt fibre concrete members Glob. J. of Resch. in Eng. Civ. & Struc. Eng. 12 23-27. Google Scholar [9] Tumadhir M and Borhan 2013 Thermal and mechanical properties of basalt fibre reinforced concrete Wrld. Acad. of Sci., Eng. & Tech. 7 712 …
To study the effects of basalt fibers (BFs), calcium sulfate whiskers (CSWs), and modified calcium sulfate whiskers (MCSWs) on the compressive strength and dynamic modulus of elasticity of concrete, this paper utilizes Mercury Intrusion Porosimetry (MIP) to measure the microstructure of concrete and calculate the fractal dimension of …
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 study investigates trends in compressive strength, elastic modulus, peak strain, and material toughness indices while also examining the transition patterns …
Zhuang et al. [26] initially developed basalt/PVA HF-ECC with superimposed amount of basalt fiber, whereby strengths showed evident enhancements at ambient temperature. Compressive, first-cracking and ultimate tensile strength constantly increased up to 45.35 MPa, 6.62 MPa and 7.85 MPa as basalt fiber content reached …
Compressive test results showed basalt fiber could increase compressive strength at elevated temperatures. The optimal basalt fiber volume fraction was 0.8%, …
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.
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%.
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 – …
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 …