Study on the Variation Law of Compressive Strength and Pore Structure of Basalt Fiber Reinforced Concrete after High Temperature
So as to check the pore structure and mechanical properties of volcanic rock fiber concrete when extreme temperature injury,and therefore the influence of pore structure on large mechanical properties when extreme temperature.during this paper,volcanic rock fiberconcretewith totally different volume content(0% ,0.5% ,1% ,1.5% )was treated at 200-800℃ .At the same time,saturated water methodology was accustomed live the porosity when totally different high temperatures,and therefore the compressive strength of volcanic rock fiber concrete blocks when totally different high temperatures was tested.The results show that the porosity of volcanic rock fiber concrete will increase with the rise of temperature.The porosity will increase slowly when 200℃ extreme temperature,and will increase quickly when 400℃ extreme temperature.The compressive strength initial enhanced then diminished.When 200℃ extreme temperature,the compressive strength reached the height,and when 800℃ extreme temperature,the compressive strength diminished sharply.
concretebasalt fiberhigh temperature damagepore structure
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