High alkali-resistant basalt fiber for reinforcing concrete

被引：104
|
作者：
Lipatov, Ya. V. [1 ]
Gutnikov, S. I. [1 ]
Manylov, M. S. [1 ]
Zhukovskaya, E. S. [1 ]
Lazoryak, B. I. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
来源：
MATERIALS & DESIGN | 2015年 / 73卷
关键词：
Basalt fiber; Alkali resistance; AR-glass fiber; Zirconia doping; Fiber reinforced concrete; GLASS-FIBERS; MECHANICAL-PROPERTIES; CHEMICAL DURABILITY; CRYSTALLIZATION; BEHAVIOR;
D O I：
10.1016/j.matdes.2015.02.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Basalt glasses and fibers with zirconia content in the range from 0 to 7 wt% were obtained using ZrSiO4 as a zirconium source. Weight loss and tensile strength loss of fibers after refluxing in alkali solution were determined. Basalt fiber with 5.7 wt% ZrO2 had the best alkali resistance properties. Alkali treatment results in formation of protective surface layer on fibers. Morphology and chemical composition of surface layer were investigated. It was shown that alkali resistance of zirconia doped basalt fibers is caused by insoluble compounds of Zr4+, Fe3+ and Mg2+ in corrosion layer. Mechanical properties of initial and leached fibers were evaluated by a Weibull distribution. The properties of basalt fibers with ZrSiO4 were compared with AR-glass fibers. The performance of concrete with obtained fibers was investigated. (C) 2015 Elsevier Ltd. All rights reserved.
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页码：60 / 66
页数：7
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