Papers by Keyword: Basalt Fiber (BF)

Abstract: In order to study the mechanical property for the combining yarn of BF/GF and polypropylene, 8 groups of combining yarn were designed and prepared. Through testing the mechanical property of the yarns, the affection of some parameters on the property of the yarns was analyzed. And following conclusions can be gotten. For BF/polypropylene combining yarn, when the fiber content of basalt is about 50.7%, the mechanical property of the yarn is the best. When the fiber content of basalt is about 43.7%, the mechanical property of the yarn is the worst. For GF/polypropylene combining yarn, the optimal and worst ratio is 55.42% and 44.4%, respectively.

Abstract: Significant advances in the field of building materials leads to increasingly frequent enforcement of these high performance materials in real constructions. Efforts to maximize the efficient use of non-renewable resources and especially energy-intensive materials lead to efforts to achieve maximum efficiency and usability [. Paper presents results of an experimental program focused on development of fire-resistance composites based on aluminous cement with fine ground ceramic powder (FGCP). Studied fibre composites were loaded by temperature 600 °C and 1000 °C. The influence of applied thermal load on composites was evaluated by means of fracture energy, compressive strength, bending strength and modulus of elasticity in bending.

Abstract: This paper investigates the static mechanical properties and flexural impact properties of reactive powder concrete (RPC) reinforced by the basalt fiber through various experimental works. The results indicate that the highest flexural and compressive strength can be obtained when the fiber content is 3kg/m³. Length and diameter of basalt fiber both influence the mechanical properties. The basalt fiber of 25mm long and 18μ in diameter can have an ideal strengthening effect. The static mechanical properties and flexural impact resistance can be improved to a considerable extent.

Abstract: Conduct experimental study on high temperature performance about asphalt concrete with 6mm basalt fiber and ordinary asphalt concrete, 6mm fibers whose dosage is 0.12%0.15% and 0.17%, test method is high temperature rut test, test temperature is 60°C. The results show that basalt fiber can improve the high temperature properties of asphalt concrete substrate, in which basalt fiber asphalt concrete maximum dynamic stability value is almost 1.27 times that of ordinary asphalt concrete, permanent deformation is 34.02% lower than that of the ordinary asphalt concrete, improved the shear performance of asphalt concrete;for high temperature performance, the optimum amount of value about 6mm basalt fiber is 0.15% .

Abstract: Conduct experimental study on low temperature performance about asphalt concrete with 6mm basalt fiber and without basalt, 6mm fibers whose dosage is 0.12%0.15% and 0.17%, test method is the indirect tensile test,test temperature is-10±0.5°C. The results show that basalt fiber improved the strength and failure strain of asphalt concrete in low temperature damage, reduced the failure stiffness,in which the maximum increased value of breaking strength is 3.41%, the maximum increased value of failure strain is 38.83%,and the maximum reduced value of failure stiffness is 25.52%,obviously improved low temperature cracking resistance of asphalt concrete;for low temperature performance, the optimum amount of value about 6mm basalt fiber is 0.15% .

Abstract: Conduct experimental study on water stability about asphalt concrete with 6m30m and 9mm basalt fiber and without basalt fiber,6mm fibers whose dosage is 0.12%0.15% and 0.17%, 9mm fibers whose dosage is 0.05%0.07% and 0.1%,test method is Freeze-thaw splitting test. The results show that the asphalt concrete mixed basalt fiber is better than not added fiber asphalt concrete on water stability; the asphalt concrete mixed 9mm basalt fiber is better than that mixed 6mm; when without experiencing freeze-thaw ,there is 1.57% difference between the maximum which 6mm basalt fiber correspond and the maximum which 9mm basalt fiber correspond, after two freeze-thaw cycles, there is 2.54% difference between the maximum which 6mm basalt fiber correspond and the maximum which 9mm basalt fiber correspond. For water stability, the optimum amount of value about 9mm basalt fiber is 0.07% and the 6mm is 0.1%.

Abstract: With the cylindrical concrete specimens of C30, C40 and C50 strength grades confined by basalt fiber-reinforced polymer, the strengths of confined concrete specimens at the strain rate of 100/s~200/s are obtained in test of impact by Φ100 mm SHPB based on quasi-static loading test. Analysis shows that the quasi-static strength ratio of basalt fiber confined concrete have a good linear relationship with restraint ratio. Under impact loading, the strengths of confined specimens increase with the increase of strain-rate. They are more sensitive to strain-rate than the plain specimens. The strain-rate effect is strengthened with the increase of basalt fiber layers, but it tends to decrease when the fiber is increased to three layers.

Abstract: Acoustic emission (AE) has been applied to study the fracture mechanics of concrete and other cementitious materials. In this paper, the AE hit generation behaviour is employed to investigate the fracture of high strength mortar containing basalt fiber under compression. A variety of amount and length of basalt fiber were used in mortar mix. Result shows that there is no significant effect observed on behavior of AE hit generation due to the differences amount and length of basalt fiber in mortar. All indicates the similar behaviour that can be described into three stages. At the second stage when maximum load starts to occur, AE hits are generated significantly indicating nucleation of many cracks. Materials failure in ductile manner since AE activities still can be recorded at long after post peak behaviour.

Abstract: The purpose of this study is the evaluation about the Micro-void generated by the impurity. The glass fiber reinforced composite made through the vacuum bag molding method was used with the impurity. The basalt fiber known as environment-friendly fiber was used as the fiber of the Micro-void specimen and the epoxy resin was used as the base material. The VaRTM process was performed for the making specimens. The change was given to the thickness of the impurity and pressure in order to see about production of the void. Consequently, as the thickness of the foreign material became thick and the pressure was enhanced, the size of the void grew and the production frequency of the void was enhanced.

Abstract: For lightweight aggregate concrete, fiber materials can reinforce its toughness and strength better and improve its segregation degree greatly. Specifically, as the experiment indicates, the fluidity of concrete mix decreases slightly after 0.5% basalt fiber and 0.5% PVA fiber are incorporated into the concrete with FA ceramsite as lightweight aggregate. However, its segregation degree reduces about 50%. And its 28d cubic compressive strength increases 0.7% and 28d splitting tensile strength increases 12.7%. Therefore, this effect is better than that of adding only one kind of fiber.