Mixing ratio design method of macroporous high-polymer mixture

A high molecular polymer and mix ratio design technology, applied in the direction of material analysis, design optimization/simulation, suspension and porous material analysis, etc., can solve the problems of no involvement, high pollution, loose and peeling mixture, etc., and achieve easy operation , the effect of simple design process

Inactive Publication Date: 2018-09-04
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of pavement also has certain defects: 1) It uses high-viscosity asphalt, which requires a higher heating temperature than ordinary base asphalt, and is a high-energy-consuming and high-pollution material; 2) The voids in this pavement form The ratio is higher than that of AC and SMA mixtures, and it is more prone to aging, resulting in loose and peeling mixtures
The patent mainly discloses a preparation method of a water-based polymer / isocyanate adhesive, and does not involve the design of the mixing ratio and related methods for its application.

Method used

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  • Mixing ratio design method of macroporous high-polymer mixture
  • Mixing ratio design method of macroporous high-polymer mixture
  • Mixing ratio design method of macroporous high-polymer mixture

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Embodiment 1

[0049] In order to achieve the above object, the technical scheme adopted in the present invention is:

[0050] The main composition of polymer adhesive is urethane prepolymer containing isocyanate group (-NCO). The synthetic raw materials are oligomer polyol and diisocyanate. The content of each component depends on the viscosity of the adhesive. After exposure to air, it can be combined with Moisture in the air reacts to solidify and release gas. The basic properties of the polymer adhesive selected in this example are shown in Table 1.1.

[0051] Table 1.1 Performance indicators of polymer adhesives

[0052]

[0053] Refer to the OGFC-13 asphalt mixture gradation design interval stipulated in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40—2004), design the aggregate gradation of macroporous polymer mixture, and the gradation design table is shown in Table 1.2 , the gradation design is shown in figure 1 as shown, figure 1 is the gradatio...

Embodiment 2

[0109] In order to achieve the above object, the technical scheme adopted in the present invention is:

[0110] The polymer adhesive is the same as in Example 1, and its basic properties are shown in Table 1.1.

[0111] Refer to the OGFC-13 asphalt mixture gradation design interval stipulated in "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40—2004), design the aggregate gradation of macroporous polymer mixture, and the gradation design table is shown in Table 2.1 , the gradation design is shown in Figure 5 As shown, the upper limit and the lower limit of the gradation are the OGFC-13 asphalt mixture gradation design range stipulated in the "Technical Specifications for Construction of Highway Asphalt Pavement" (JTG F40-2004), and the median value of the gradation is the upper limit and the upper limit of the gradation. The middle value of the lower limit of the grading, and the design grading is the actual application value within the interval b...

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Abstract

The invention discloses a mixing ratio design method of a macroporous high-polymer mixture. The method includes grading design, determination of an adhesive use quantity range, specimen molding of themixture, a curing method, performance testing and determination of best adhesive use quantity, and is a method based on performance balancing and target porosity. The best adhesive use quantity rangeis selected through testing of performance indicators, then the target porosity is combined to determine the best adhesive use quantity, an effect that road use performance in road use meets requirements can be guaranteed, and water drainage and noise reduction performance of a macroporous road surface can also be guaranteed. Therefore, the method is a practical design method that can guarantee performance of all aspects of the mixture, and a design process of the method is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of road pavement materials, and in particular relates to a method for designing the mixing ratio of a macroporous high-molecular polymer mixture. Background technique [0002] In recent years, my country has put forward the concept of "sponge city". In the field of road materials, OGFC asphalt mixture pavement is usually used, which can effectively eliminate surface water. However, this kind of pavement also has certain defects: 1) It uses high-viscosity asphalt, which requires a higher heating temperature than ordinary base asphalt, and is a high-energy-consuming and high-pollution material; 2) The voids in this pavement form Compared with AC and SMA mixtures, the ratio is higher, and it is more prone to aging, resulting in loose and peeling mixtures. In view of the requirements for environmental protection and durability, polymer adhesives have been gradually used in road construction in recent years. Thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01N15/08
CPCG01N15/088G06F30/20
Inventor 许鹰巴学亮刘思铨徐世法季节何建彬丑志静任永凯陈璇
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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