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Micro-cover pavement mixture and preparation method thereof

A mixture and stone technology, which is applied in the field of micro-covered pavement mixture and its preparation, can solve problems such as pavement structure damage, achieve the effects of reducing energy loss, ensuring strength and stability, enhancing stability and anti-deformation and distortion performance

Inactive Publication Date: 2021-11-02
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the road load and natural factors, some pavement structures will be damaged, but some pavements only have some surface functional problems, and their pavement structures are still intact

Method used

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  • Micro-cover pavement mixture and preparation method thereof
  • Micro-cover pavement mixture and preparation method thereof
  • Micro-cover pavement mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment adopts OGFC-5 gradation to prepare micro-cover pavement mixture, comprising the following steps:

[0043] ①Weigh the corresponding quality of stone (supplier, Shanghai Road and Bridge Group) according to the ratio, then pour it into the mixer, and wait for mixing.

[0044] 2. then take by weighing 40g of water, then add 5g of silane coupling agent (supplier, Guangdong Lvwei New Material Technology Co., Ltd.), 10g of zinc acetate (supplier, Tianjin Fuchen Chemical Reagent Co., Ltd.) to the water, Pour into the blender after mixing, then start the machine and stir evenly;

[0045] ③ Weigh 400g of water-based asphalt and 100g of vinyl chloride-acrylate copolymer emulsion, stir them evenly and add them to the stone material, start the mixer, and stir for 90s. , after mixing evenly, the required mixture is obtained.

Embodiment 2

[0047] The present embodiment adopts AC-10 gradation to prepare micro-cover pavement mixture, comprising the following steps:

[0048] ①Weigh the corresponding quality of stone (supplier, Shanghai Road and Bridge Group) according to the ratio, then pour it into the mixer, and wait for mixing.

[0049] ② Then weigh 45g of water, then add 10g of silane coupling agent and 12g of zinc acetate into the water, mix and pour into the mixer, then start the machine and stir evenly;

[0050] ③ Weigh 450g of water-based asphalt and 120g of vinyl chloride-acrylate copolymer emulsion, stir them evenly, add them to the stone, start the mixer, and stir for 90s. , after mixing evenly, the required mixture is obtained.

Embodiment 3

[0052] The present embodiment adopts AC-13 gradation to prepare micro-cover pavement mixture, comprising the following steps:

[0053] ①Weigh the corresponding quality of stone (supplier, Shanghai Road and Bridge Group) according to the ratio, then pour it into the mixer, and wait for mixing.

[0054] ② Then weigh 60g of water, then add 13g of silane coupling agent and 15g of zinc acetate into the water, mix and pour into the mixer, then start the machine and stir evenly;

[0055] ③ Weigh 500g of water-based asphalt and 140g of vinyl chloride-acrylate copolymer emulsion, stir them evenly and add them to the stone material, start the mixer and stir for 90s. , after mixing evenly, the required mixture is obtained.

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Abstract

The invention discloses a micro-cover pavement mixture and a preparation method thereof. The raw materials comprise stone, water-based asphalt, an early strength agent, a silane coupling agent and zinc acetate. The preparation method comprises the steps of pouring stones into a stirrer; adding a silane coupling agent and zinc acetate into water, conducting mixing, pouring a formed mixture into the stone, and uniformly conducting stirring to wet the surfaces of the stones; and uniformly stirring the water-based asphalt and the early strength agent, adding the mixture into the stones obtained in the step 2), and conducting stirring again. The road surface stability can be improved, construction is easy and convenient, construction can be conducted at the normal temperature and even at the temperature of 0 DEG C, and traffic opening can be conducted within about two hours after construction at the normal temperature of 5 DEG C. Due to the adoption of the cold-mixed asphalt mixture, heating is not needed and corresponding waste gas is not generated in the construction process, so that energy consumption can be reduced, environmental pollution is reduced, meanwhile, harm to the body health of construction workers can be effectively reduced, and the cold-mixed asphalt mixture is suitable for being popularized and used.

Description

technical field [0001] The invention relates to a micro-cover road surface mixture and a preparation method thereof, which is mainly a maintenance process aimed at the problem of road surface damage, can improve the stability of the road surface and prolong its service life, and belongs to the technical field of road engineering. Background technique [0002] Highway is one of the basic facilities that connect cities with each other. It directly restricts the development of urban economy. Therefore, ensuring that highways are in good operating condition is of great significance to the construction and development of cities. The highway traffic volume in our country is increasing day by day, and the axle load of vehicles is developing towards large tonnage. Heavy loads and overloads have increased sharply, and road cracks and rutting problems have emerged one after another, which puts forward higher requirements for the shear performance of asphalt pavement. Moreover, due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B2201/50C04B14/02C04B24/26C04B24/04C04B24/42
Inventor 欧阳春发罗伟董思言单晓茜高群
Owner SHANGHAI INST OF TECH
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