Investigation on the Alkali-Resistance Properties of Basalt Fiber Reinforced Plastics Bars in Concrete

2011 ◽  
Vol 284-286 ◽  
pp. 182-186 ◽  
Author(s):  
Jun Long Zhou ◽  
Chun Xia Xu ◽  
Shi Yong Jiang ◽  
Bing Hong Li ◽  
Zhong Wen Ou
Keyword(s):  
High Temperature ◽  
Basalt Fiber ◽  
Alkali Resistance ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Temperature Method ◽  
New Type ◽  
Fiber Reinforced Plastics ◽  
Marine Engineering

As a new type of building material, Basalt Fiber Reinforced Plastics is employed in concrete in place of steel reinforcement under such strongly-corrosive environment as marine engineering projects to avoid durability problem caused by corrosion. But BFRP bars’ alkali-resistance must be considered and studied. In this study, BFRP was soaked in saturated Ca(OH)2 solution and its tensile strength was measured through long-period immersion and high-temperature immersion experiments respectively. Besides, accelerated high-temperature method was adopted to detect its main ingredients: continuous Basalt fiber and resin. The results indicate that BFRP has poor alkali-resistance and its alkali-resistance must be improved if it is applied in concrete for long-term purpose.

Effect of long climatic ageing on the microstructure of the surface of сarbon-fiber-reinforced plastics on base epoxy matrix

2019 ◽  
pp. 157-169 ◽  
Author(s):  
I. S. Deev ◽  
E. V. Kurshev ◽  
S. L. Lonsky
Keyword(s):  
Climatic Factors ◽  
Temperate Climate ◽  
Fiber Reinforced ◽  
Humid Climate ◽  
Climatic Zones ◽  
Reinforced Plastics ◽  
Carbon Plastics ◽  
Fiber Reinforced Plastics ◽  
Determining Factor

Studies and experimental data on the microstructure of the surface of samples of epoxy сarbon-fiber-reinforced plastics that have undergone long-term (up to 5 years) climatic aging in different climatic zones of Russia have been conducted: under conditions of the industrial zone of temperate climate (Moscow, MTsKI); temperate warm climate (Gelendzhik, GTsKI); a warm humid climate (Sochi, GNIP RAS). It is established that the determining factor for aging of carbon plastics is the duration of the complex effect of climatic factors: the longer the period of climatic aging, the more significant changes occur in the microstructure of the surface of the materials. The intensity of the aging process and the degree of microstructural changes in the surface of carbon plastics are affected by the features of the climatic zone. general regularities and features of the destruction of the surface of carbon plastics after a long-term exposure to climatic factors have been established on the basis of the analysis and systematization of the results of microstructural studies.

scholarly journals Delamination Study in Edge Trimming of Basalt Fiber Reinforced Plastics (BFRP)

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1418 ◽  
Author(s):  
Maria Navarro-Mas ◽  
Juan García-Manrique ◽  
Maria Meseguer ◽  
Isabel Ordeig ◽  
Ana Sánchez
Keyword(s):  
Tool Wear ◽  
Volume Fraction ◽  
End Milling ◽  
Basalt Fiber ◽  
Depth Of Cut ◽  
Fiber Reinforced ◽  
Fiber Volume ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Edge Trimming

Although there are many machining studies of carbon and glass fiber reinforced plastics, delamination and tool wear of basalt fiber reinforced plastics (BFRP) in edge trimming has not yet studied. This paper presents an end milling study of BFRP fabricated by resin transfer molding (RTM), to evaluate delamination types at the top layer of the machined edge with different cutting conditions (cutting speed, feed rate and depth of cut) and fiber volume fraction (40% and 60%). This work quantifies delamination types, using a parameter Sd/L, that evaluates the delamination area (Sd) and the length (L), taking into account tool position in the yarn and movement of yarns during RTM process, which show the random nature of delamination. Delamination was present in all materials with 60% of fiber volume. High values of tool wear did not permit to machine the material due to an excessive delamination. Type II delamination was the most usual delamination type and depth of cut has influence on this type of delamination.

INFLUENCE OF CLIMATIC AGEING ON THE PROPERTIES OF HIGH-TEMPERATURE CARBON FIBER REINFORCED PLASTICS

2021 ◽  
pp. 39-51
Author(s):  
I.N. Gulyev ◽  
◽  
I.V. Zelenina ◽  
E.O. Valevin ◽  
M.A. Khaskov ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Fiber ◽  
Cold Climate ◽  
Temperate Climate ◽  
Fiber Reinforced ◽  
Humid Climate ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

Presents the results of of research of the properties of a series of high-temperature carbon plastics based on phthalonitrile resin after long-term exposure in various climatic zones: temperate climate, moderately warm climate with mild winters, warm humid climate, very cold climate are presented. The state of the surface of carbon fiber reinforced plastics has been investigated, their thermal stability and water absorption have been determined. After exposure, CFRPs showed high retention of properties from the level of the initial values: 80–90% at room temperature of tests and 60–75% at a temperature of 300 °С.

Studies on Disfigurement-Fee Technology of Drilling Carbon Fiber Reinforced Plastics

2007 ◽  
Vol 24-25 ◽  
pp. 125-132
Author(s):  
Yong Qi Wang ◽  
Yong Jie Bao ◽  
Hang Gao
Keyword(s):  
Carbon Fiber ◽  
Drilling Process ◽  
Fiber Reinforced ◽  
Drilling Force ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Drilling Quality ◽  
New Type ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

Based on the analysis of various disfigurements of carbon fiber reinforced plastics formed in drilling process, the formation model of disfigurement is built up, and analysis results shows that the main reason of disfigurement is the exceeding cutting force. By focusing on these problems, new-type drill—super-hard electroplated abrasive drill is developed, and some experiments were carried out. Compared with the traditional sintered-carbide drill in drilling, the super-hard electroplated abrasive drill has lower drilling force, better drilling quality, higher machining efficiency, and longer life-span. A conclusion that super-hard electroplated drill is more suitable for drilling CFRP is gained.

Preparation of Carbon Nanotubes Doped TiO2/Glass Fiber Reinforced Plastics Hybrid Materials

2013 ◽  
Vol 785-786 ◽  
pp. 220-223
Author(s):  
Ling Yun Bai ◽  
Long Fa Jiang ◽  
Yao Chen
Keyword(s):  
Carbon Nanotubes ◽  
High Temperature ◽  
Glass Fiber ◽  
Hybrid Materials ◽  
Tetrabutyl Titanate ◽  
Fiber Reinforced ◽  
High Temperature Stability ◽  
Reinforced Plastics ◽  
Glass Fiber Reinforced ◽  
Fiber Reinforced Plastics

Carbon nanotubes (CNTs) doped TiO2/glass fiber reinforced plastics (GRP) hybrid materials were prepared by first step sol-gel and then hand lay-up method, using modified CNTs doped tetrabutyl titanate as precursor. The results showed that TiO2 component as the inorganic material, could improve the high temperature stability of the GRP, and the latticework structure of the hybrid material could disperse the CNTs well and prevented them from gathering at high temperature.

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