Basalt mineral fiber used for asphalt concrete
An asphalt concrete and mineral fiber technology, applied in the field of basalt mineral fiber of asphalt concrete, can solve the problems of difficult to achieve satisfactory cost performance, increase the thickness of the asphalt film, increase the amount of asphalt, etc., to prevent early water damage to the road surface and improve the rutting resistance. , the effect of improving the service life
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[0034] A basalt mineral fiber used for asphalt concrete. It uses basalt and other conventional blended ore and slag ingredients as raw materials, wherein the amount of basalt ore is 35% to 55% of the total weight of the raw materials, and other blended ore and slag components According to acidity coefficient M K : 2.3 Control the ratio; mix the raw materials and melt them at a high temperature in a cupola, then use the four-axis centrifugation method to make fibers, and then use a pelletizer to make irregular granular "basalt mineral fibers for asphalt concrete". In addition to static electricity, it is packed in an impermeable bag.
[0035] The chemical composition of the basalt mineral fiber is (by weight percentage): SiO 2 : 45.3%, Al 2 O 3 : 13.2%, CaO: 11.8%, MgO: 13.8%, Fe m O n (Fe 2 O 3 +FeO): 7.6%, TiO 2 : 1.8%, other components: 6.5%; the physical form of the fiber of the present invention is:
[0036] Average particle size: 6.2mm;
[0037] Average fiber diameter: 0.0053...
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