EFFECTS OF DIFFERENT MIXING METHODS ON MECHANICAL PROPERTIES OF BASALT FIBER REINFORCED CONCRETE AFTER HIGH TEMPERATURE

Abstract

Abstract: In this study, the effects of two different fibers (cement slurry wrapped fiber, direct incorporation) on the compressive strength and tensile strength of reinforced coarse aggregate concrete were studied under different basalt fiber volume (0%, 0.1%, 0.15%, 0.2%) and high temperature(20 ℃, 200 ℃, 400 ℃, 600 ℃). The strength ratio of the indirect mixing method was higher than that of the direct mixing method, but the variable was different and the range of the increase was different. When the temperature was kept constant, the increase amplitude of compressive strength is increased with the increase of fiber content, and the maximum is 0.2%. The increase amplitude of splitting tensile strength is decreased with the increase of fiber content, and the maximum is 0.1%. When the dosage is constant, the increasing range of compressive strength shows the trend of the broken line with the change of temperature. It presented an upward trend between 20 ℃ and 200 ℃, tended to be gentle between 200 ℃ and 400 ℃, and rose again between 400 ℃ and 600 ℃. The splitting tensile strength is basically unchanged with the increased amplitude between 20 ℃ and 200 ℃, but presented a trend of sharp decline after 200 ℃.

Key words: basalt fiber, incorporation manner, high temperature, strength

CLC Number:

TB332

GUO Rui-jin, BI Zhong, WANG Fu, WANG Pan-le. EFFECTS OF DIFFERENT MIXING METHODS ON MECHANICAL PROPERTIES OF BASALT FIBER REINFORCED CONCRETE AFTER HIGH TEMPERATURE[J]. Fiber Reinforced Plastics/Composites, 2017, 0(2): 88-92.

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