Designing method for basalt fiber porous asphalt mixture matching proportion

A technology of basalt fiber and permeable asphalt, used in roads, road repair, roads, etc., can solve the problems of inaccurate data, large test volume, large randomness, etc., and achieve the effect of improving engineering efficiency, easy operation and cost saving

Active Publication Date: 2018-10-12
YANGZHOU UNIV
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  • Abstract
  • Description
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Problems solved by technology

There are two aspects defects in such design method: the one, this type of method is a kind of empirical method, and the arbitrariness that different people determine is bigger, and has very big relationship wit

Method used

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  • Designing method for basalt fiber porous asphalt mixture matching proportion
  • Designing method for basalt fiber porous asphalt mixture matching proportion
  • Designing method for basalt fiber porous asphalt mixture matching proportion

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Embodiment

[0034] Step 1. Selection of raw materials and gradation:

[0035] The gradation design of permeable asphalt mixture PAC-13 is designed with reference to the mineral gradation range specified in CJJ / T 190-2012 "Permeable Asphalt Pavement Technical Specification". The determined synthetic gradation table of PAC-13 permeable asphalt mixture with chopped basalt fiber is as follows.

[0036] PAC-13 Permeable Asphalt Mixture Gradation Through Rate of Each Screen Hole

[0037]

[0038] Step 2: Determine the initial oil-stone ratio:

[0039] The initial oil-stone ratio of the permeable asphalt mixture PAC-13 is determined with reference to the thickness of the adsorbed asphalt film on the surface of the mineral material specified in the CJJ / T 190-2012 "Technical Specification for Permeable Asphalt Pavement". The initial oil-stone ratio is 4.5%.

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Abstract

The invention discloses a designing method for the basalt fiber porous asphalt mixture matching proportion. The designing method comprises the following steps that firstly, raw materials are selected;secondly, gradation design is conducted; thirdly, the optimum asphalt aggregate proportion is determined; and fourthly, the matching proportion designing index is verified to obtain the object matching proportion of a porous asphalt mixture. According to the designing method provided by the invention, operation is easy, the cost is saved, the tedious operation that a raveling test is implementedto determine the asphalt aggregate proportion of the porous asphalt mixture is avoided, the using quantity of asphalt is determined reasonably, various properties of the asphalt mixture are ensured, the blindness and work amount of the matching proportion designing stage are lowered, and the engineering efficiency is improved remarkably.

Description

Technical field [0001] The invention belongs to the research field of highway building materials, and specifically relates to a method for designing the mixing ratio of basalt fiber permeable asphalt mixture. Background technique [0002] Permeable asphalt mixture, as an open-graded asphalt mixture with interconnected voids, has been widely used at home and abroad for its remarkable water permeability, good anti-skid performance and the function of reducing road temperature. Through research, foreign scholars believe that the main reason for the scattering of aggregates on large-voided permeable pavement is due to the viscosity of asphalt and insufficient adhesion to the aggregate. The addition of additives can significantly improve the wear resistance of the mixture, but it will affect the performance of the permeable pavement. Porosity, so sufficient tests should be carried out when adding, in order to improve the durability of the road surface while controlling the porosity. ...

Claims

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Application Information

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IPC IPC(8): E01C19/10
CPCE01C19/1054
Inventor 肖鹏王胜康爱红吴正光伏伟俐
Owner YANGZHOU UNIV
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