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Waste rubber powder dry micro-surfacing mixed material and preparation method thereof

A technology of micro-surfacing mixed materials and waste rubber powder, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., to achieve the effect of improving force bearing mode, improving particle gradation, and preventing segregation

Inactive Publication Date: 2018-06-12
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of micro-surfacing technology in the maintenance of expressways in my country is still in its infancy. Conventional micro-surfacing generally has the disadvantages of high driving noise, poor wear resistance and short service life, which affects the promotion and application of this technology in preventive maintenance in my country.

Method used

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  • Waste rubber powder dry micro-surfacing mixed material and preparation method thereof
  • Waste rubber powder dry micro-surfacing mixed material and preparation method thereof
  • Waste rubber powder dry micro-surfacing mixed material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0020] The preparation method of waste rubber powder dry method micro-surfacing compound comprises the following steps:

[0021] S1: Inspect the raw materials according to the technical requirements of the "Technical Guidelines for Microsurfacing and Slurry Sealing", weigh qualified basalt aggregates, cement and waste rubber powder at room temperature according to the mixing ratio, and use the above materials in the mixing pot Manually mix well with a mixing shovel to obtain the waste rubber powder mixture in a dry state;

[0022] S2: Pour water of specified quality into the mixing pot, and then artificially stir evenly for about 15 seconds to obtain the waste rubber powder mixture in a wet state;

[0023] S3: Pour the specified quality of SBR modified emulsified asphalt into the mixing pot, and continue to manually stir evenly for 15 seconds to obtain the waste rubber powder dry micro-surfacing mixture.

Embodiment 1

[0025] The waste rubber powder dry micro-surfacing mixture is made of the following raw materials in mass percentage: in the basalt aggregate, the basalt aggregate with a particle size of 5-10mm accounts for 21% of the total mass of the aggregate, and the basalt aggregate with a particle size of 3-5mm Basalt aggregates with a particle size of 0-3 mm accounted for 68% of the total mass of aggregates; SBR modified emulsified asphalt was 12.8%, and cement (P O42.5) was 1.5%. 40 mesh rubber powder is 2%, and water is 7%. The gradation type of the mixed material in the micro-surfacing of waste rubber powder in this embodiment is MS-3 medium gradation, and the specific gradation composition is shown in Table 1.

[0026] Table 1 MS-3 type microsurfacing mixture gradation

[0027]

[0028] In this example, the nominal maximum particle size of the basalt aggregate is ≤9.5mm, and the apparent density is 2.91g / m 3 ; The particle size of waste rubber powder is 40 mesh (0.45mm), and t...

Embodiment 2

[0034]The waste rubber powder dry micro-surfacing mixture is made of the following raw materials in mass percentage: in the basalt aggregate, the basalt aggregate with a particle size of 5-10mm accounts for 21% of the total mass of the aggregate, and the basalt aggregate with a particle size of 3-5mm Basalt aggregates with a particle size of 0-3mm accounted for 68% of the total mass of aggregates; SBR modified emulsified asphalt was 11.2%, and cement (P O42.5) was 1.5%. 40 mesh rubber powder is 1%, water is 6%. The gradation type of the mixed material in the micro-surfacing of waste rubber powder in this embodiment is MS-3 type medium gradation, and the specific gradation composition is shown in Table 1.

[0035] In this example, the nominal maximum particle size of the basalt aggregate is ≤9.5mm, and the apparent density is 2.91g / m 3 ; The particle size of waste rubber powder is 40 mesh (0.45mm), and the relative density is 1.15g / m 3 , the moisture content is 0.68%, the fib...

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Abstract

The invention discloses a waste rubber powder dry micro-surfacing mixed material and a preparation method thereof. The waste rubber powder dry micro-surfacing mixed material is prepared from, by masspercent, 100% of basalt aggregate, 12%-13% of SBR (styrene butadiene rubber) modified emulsified asphalt, 1%-2% of ordinary Portland cement, 1%-3% of waste rubber powder and water in a weight ratio of5%-7% to the aggregate; the waste rubber powder dry micro-surfacing mixed material is in an MS-3 medium grading; the ordinary Portland cement is P.O42.5 ordinary Portland cement. The preparation method of the waste rubber powder dry micro-surfacing mixed material includes steps of detecting raw materials according to the technical requirements in Micro-surfacing and Slurry Seal Technical Manual,according to the proportional ratio, weighing out the basalt aggregate, the cement and the waste rubber power which are qualified, and manually uniformly mixing the raw materials inside a mixing pot;pouring water of the specified weight into the mixing pot, uniformly mixing for about 15 seconds; then pouring the SBR modified emulsified asphalt of the specified weight into the mixing pot, and continuing to manually uniformly mixing for 15 seconds to obtain the waste rubber powder dry micro-surfacing mixed material.

Description

technical field [0001] The invention belongs to the technical field of pavement engineering, in particular to a waste rubber powder dry-process micro-surfacing mixture and a preparation method thereof. Background technique [0002] At present, the daily repair and maintenance of high-grade highways has become one of the key tasks of the highway management department. Preventive maintenance is an important part of road surface maintenance. Micro-surfacing technology is to use special mechanical equipment to modify polymer modified emulsified Filler, water and additives are mixed according to the design ratio to form a slurry mixture, spread on the original road surface, and quickly open a thin layer with high anti-slip and durable properties for traffic. The opening time for traffic at the micro-surface varies depending on the environment in which the project is located. Generally, traffic can be opened within 1 hour when the temperature is 24°C and the humidity is 50% (or le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/22C04B111/72C04B111/20C04B111/27
CPCC04B28/04C04B2111/0075C04B2111/2038C04B2111/27C04B2111/72C04B14/14C04B20/0076C04B18/22C04B24/36Y02W30/91
Inventor 叶亚丽刘志杭庄传仪郭金科李红阳孙庆千许秀美侯庆刚李淑娟袁晓曼
Owner SHANDONG JIAOTONG UNIV
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