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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

Inactive Publication Date: 2008-09-03
肖菁
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the road asphalt concrete pavement structure, it is necessary to use a fiber with high tensile strength and elastic modulus and adapt to the construction process requirements of asphalt mixture, which can not deteriorate when mixed at 230 ° C and can be evenly dispersed as a carrier to increase asphalt. Film thickness, increase the amount of asphalt, prevent asphalt loss, and be used as a fiber stabilizer in the mixture and can maintain long-term effectiveness; the fibers used in asphalt concrete in the prior art are difficult to achieve satisfactory cost-effective effects

Method used

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  • Basalt mineral fiber used for asphalt concrete
  • Basalt mineral fiber used for asphalt concrete

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Embodiment Construction

[0034] A basalt mineral fiber for asphalt concrete, using basalt and other conventional blended ore and slag components as raw materials, wherein the amount of basalt ore is 35% to 55% of the total weight of the raw materials, and the composition of other blended ore and slag components According to the acidity coefficient M K : 2.3 Control the ratio; After mixing the raw materials, they are melted at high temperature in a cupola, and then made into fibers by four-axis centrifugation, and then made into irregular granular "basalt mineral fibers for asphalt concrete" by a granulator. In addition to static electricity, packed in impermeable bags.

[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 composition: 6.5%; The physical form of fiber of the present invention is:

[0036] Average particle size: 6.2mm;

[0037] Average...

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Abstract

A basalt mineral fiber used in asphalt concrete prepared by minerals such as the basalt, has the following chemical compositions by weight proportion: 42-48.3% of SiO2, 11-16.2% of Al2O3, 8-12.8% of CaO, 11-14% of MgO, 4.8-8.6% of FemOn and 0.8-2.3% of TiO2, and 4.6-7.8% of other components (K2O, NaO, B2O3, Cr2O3 and MnO2); the average particle size of the fiber is 4mm-8mm and the average fiber diameter is 0.004mm-0.006mm. By integrating proper fiber and the asphalt concrete, the high-temperature rut deformation resistant performance, low-temperature cracking resistant performance and fatigue damage resistant performance of the asphalt concrete road surface is greatly improved, the early-stage water damage of the road surface is effectively prevented and the service life of the road surface is greatly prolonged.

Description

technical field [0001] The invention relates to a basalt mineral fiber, and further refers to the basalt mineral fiber used in asphalt concrete. Background technique [0002] In the road asphalt concrete pavement structure, it is necessary to use a fiber with high tensile strength and elastic modulus and adapt to the construction process requirements of asphalt mixture, which can not deteriorate when mixed at 230 ° C and can be evenly dispersed as a carrier to increase asphalt. Film thickness, increase the amount of asphalt, prevent asphalt loss, and be used as a fiber stabilizer in the mixture and can maintain long-term effectiveness; the fibers used in asphalt concrete in the prior art are difficult to achieve satisfactory cost-effective effects. Contents of the invention [0003] The technical problem to be solved in the present invention is to propose a kind of basalt mineral fiber for asphalt concrete, which can greatly improve the high-temperature rutting resistance ...

Claims

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Application Information

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IPC IPC(8): C03C13/06
CPCC04B2111/0075C04B26/26C04B14/4668C04B2111/00215C03C3/087C04B20/0076
Inventor 肖菁
Owner 肖菁
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