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Pavement material and pavement method for flame-retardant stone chips skid-resisting super overlay

A kind of stone chip and super technology, applied in the field of functional maintenance overlay construction technology, to achieve the effect of stabilizing anti-talc chip and speeding up the promotion and application

Inactive Publication Date: 2013-08-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter what kind of stone chip sealant, due to its initial "flying stone" phenomenon, it has hardly been used for the surface layer of the expressway, and it is mainly used for the surface layer of the low-grade road and the newly built expressway. The middle seal and lower seal are also widely used in the waterproof adhesive layer of concrete bridge deck asphalt pavement, but at this time SBS modified asphalt must be used as the binder
Therefore, the current development of chip sealant has encountered a bottleneck, and it is difficult to enter a higher level of use.

Method used

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  • Pavement material and pavement method for flame-retardant stone chips skid-resisting super overlay
  • Pavement material and pavement method for flame-retardant stone chips skid-resisting super overlay
  • Pavement material and pavement method for flame-retardant stone chips skid-resisting super overlay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] A paving material for flame-retardant stone chip anti-skid super overlay, the paving material comprises the following components and the mass fraction of each component is:

[0082] Anti-talc chips: 100 parts;

[0083] High-concentration flame-retardant modified emulsified asphalt: 12 to 14 parts;

[0084] Flame retardant emulsified asphalt: 3 to 5 parts.

[0085] In this example, the anti-talc debris is fine-grained gravel with a particle size of 3 to 5 mm; the evaporation residue content of high-concentration flame-retardant modified emulsified asphalt is not less than 65%, and the evaporation residue content of flame-retardant emulsified asphalt is not less than 55% .

[0086] The specific construction process of the above paving materials is as follows:

[0087] (1) Detect and evaluate the original road surface, and then determine the test section;

[0088] (2) Calibrate the asphalt spreader and gravel spreader, transport the equipment to the construction sectio...

Embodiment 2

[0093] A paving material for flame-retardant stone chip anti-skid super overlay, the paving material comprises the following components and the mass fraction of each component is:

[0094] Anti-talc chips: 100 parts;

[0095] High-concentration flame-retardant modified emulsified asphalt: 14-18 parts;

[0096] Flame retardant emulsified asphalt: 4 to 6 parts.

[0097] In this example, the anti-talc debris is fine-grained gravel with a particle size of 3 to 5 mm; the evaporation residue content of high-concentration flame-retardant modified emulsified asphalt is not less than 65%, and the evaporation residue content of flame-retardant emulsified asphalt is not less than 55% .

[0098] Above-mentioned laying material, concrete construction process is with embodiment 1.

[0099] Embodiment 1 and embodiment 2 are carried out trial paving, and the pavement performance detection result that obtains is as shown in table 1:

[0100] Table 1 Road performance test

[0101]

[01...

experiment example

[0104] In addition to the road implementation cases, laboratory performance simulations were carried out for each proportion of the components, as shown in Table 2, Table 3, and Table 4. The experimental measurements of the paving materials of each proportion meet the requirements for road use.

[0105] Table 2 Proportion components of paving materials

[0106]

[0107] Table 3 Proportion components of high-concentration flame-retardant modified emulsified asphalt in experimental examples

[0108]

[0109] The proportioning components of flame retardant emulsified asphalt in the experimental example of Table 4

[0110]

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Abstract

The invention discloses a pavement material and a pavement method for a flame-retardant stone chips skid-resisting super overlay. The pavement method comprises the following components: skid-resisting stone chips, high-concentration flame-retardant modified emulsified asphalt and flame-retardant emulsified asphalt. According to the pavement material and the pavement method for the flame-retardant stone chips skid-resisting super overlay, the high-concentration flame-retardant modified emulsified asphalt is paved on the surface of original pavement to form an underlying colloidal plate body by which the effects of adhering and preventing water can be realized; in addition, the skid-resisting stone chips can protect the underlying asphalt and bear the rolling and wearing of passing vehicles; the flame-retardant emulsified asphalt at the top layer stabilizes the skid-resisting stone chips and performs secondary flame retarding effect in the case of fire, therefore, the construction technology of original chip seal is not effected, and the popularization and application of the curing techniques or thin overly techniques are promoted.

Description

technical field [0001] The invention relates to a laying material and laying method of a flame-retardant stone chip anti-slip super overlay, which belongs to the construction technology of functional maintenance overlays for highways of various grades, urban expressways, tunnel pavements, etc. with insufficient anti-slip and severe water damage. . Background technique [0002] Stone chip sealing technology is a thin-layer overlay technology, which belongs to the field of preventive maintenance. It is a functional maintenance technology implemented on the premise that the strength of the pavement structural layer meets the requirements, that is to say, there is no structural disease. . This technology first originated in France, and was introduced to China in the late 1980s with a brand-new, mechanized, automated, and integrated construction technology model, which is similar to the layer laying method in my country in the 1960s and 1970s. [0003] The chip seal is also cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26E01C7/24C04B111/28
Inventor 黄晓明李志栋
Owner SOUTHEAST UNIV
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