Asphalt foaming agent and preparation method thereof

A technology of foaming agent and asphalt, which is applied in the field of asphalt foaming agent and its preparation, can solve the problems that the foaming agent cannot meet the construction requirements and the adjustment means are limited, and achieve the improvement of expansion rate, stability, and high and low temperature performance of asphalt Improved effect

Inactive Publication Date: 2017-03-15
JIANGSU TIANNUO ROAD MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current technology, because the expansion rate and half-life are only controlled by adding water, the adjustment means are limited

Method used

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  • Asphalt foaming agent and preparation method thereof
  • Asphalt foaming agent and preparation method thereof
  • Asphalt foaming agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Mix natural latex and industrial latex (styrene-butadiene latex) at a mass ratio of 100:0, with a solid content of 35%, at a temperature of 10-40°C, in a reaction kettle, and stir at a speed of 30-50 rpm to obtain asphalt foaming agent.

[0015] Add the foaming agent to the 0.1mm petroleum asphalt with a penetration of 20-40 (25°C, 100g, 5s), and when the addition amount is 2.86wt%, the expansion rate and half-life of the asphalt foam are compared with the reference results in Table 1 , the main indicators of asphalt and modified asphalt are shown in Table 1; when the addition amount is 5.71wt%, the expansion rate and half-life of asphalt foaming are compared with the reference results in Table 1, and the main indicators of asphalt and modified asphalt are shown in Table 1.

[0016] Table 1

[0017]

Embodiment 2

[0019] Mix natural latex and industrial latex (styrene-butadiene latex) at a mass ratio of 7:3, with a solid content of 50%, at a temperature of 10-40°C, in a reaction kettle, and stir at a speed of 30-50 rpm to obtain asphalt foam agent.

[0020] The foaming agent is added to the 0.1mm petroleum asphalt with a penetration of 40-60 (25°C, 100g, 5s), and when the addition amount is 2wt%, the expansion rate and half-life results of the asphalt foam are compared with the reference in Table 2, The main indicators of asphalt and modified asphalt are shown in Table 2; when the addition amount is 4wt%, the expansion rate and half-life of asphalt foam are compared with the reference in Table 2, and the main indicators of asphalt and modified asphalt are shown in Table 2.

[0021] Table 2

[0022]

Embodiment 3

[0024] Mix natural rubber latex and industrial latex (nitrile latex) at a mass ratio of 6:4, with a solid content of 55%, at a temperature of 10-40 ° C, in a reaction kettle, and stir at a speed of 30-50 rpm to obtain asphalt foaming agent.

[0025] Add foaming agent to 0.1mm petroleum asphalt with a penetration of 60-80 (25°C, 100g, 5s), and when the amount added is 2.22wt%, the expansion rate and half-life of the asphalt foam are compared with the reference results in Table 3 , the main indicators of asphalt and modified asphalt are shown in Table 3; when the addition amount is 4.44wt%, the expansion rate and half-life of asphalt foaming are compared with the reference results in Table 3, and the main indicators of asphalt and modified asphalt are shown in Table 3.

[0026] table 3

[0027]

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PUM

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Abstract

The invention relates to manufacturing of a foaming agent applied to foamed asphalt production for pavement engineering, as well as asphalt mixed material warm-mixing construction, asphalt pavement cold-regeneration and modified asphalt technologies, in particular to an asphalt foaming agent for foamed asphalt and modified asphalt, and a preparation method of the asphalt foaming agent. The components of the asphalt foaming agent are natural latex and industrial latex, wherein the mass ratio of the natural latex to the industrial latex is 100:0 to 0:100; and the solid content mass percent is 1 to 80 percent, preferably 30 to 80 percent. The foaming agent provided by the invention not only can increase the expansion rate and the half-life period of asphalt foaming and improve the stability of the foamed asphalt, but also can obviously improve the high and low temperature properties of the asphalt and improve the character of the asphalt.

Description

technical field [0001] The present invention relates to the production of foamed asphalt used in pavement engineering, warm mixing construction of asphalt mixture, cold regeneration of asphalt pavement, and the production of foaming agent used in modified asphalt, especially a foamed asphalt and modified asphalt. Asphalt foaming agent and preparation method thereof. Background technique [0002] Foamed asphalt is an asphalt foam system formed by contacting high-temperature asphalt with water and forming steam bubbles in the asphalt due to the vaporization of water. Because foamed asphalt can be mixed with aggregate at a relatively low temperature, the mixture can be rolled at a relatively low temperature, so it is very popular in asphalt warm-mix construction and old asphalt pavement regeneration process. [0003] Two parameters to evaluate the foaming effect of asphalt are expansion rate and half-life. Expansion rate refers to the ratio of the maximum volume achieved afte...

Claims

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Application Information

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IPC IPC(8): C08L7/02C08L9/08C08L53/02C08L11/02C08L9/04C08L95/00
CPCC08L7/02C08L9/08C08L11/02C08L53/02C08L95/00C08L2205/03C08L9/04Y02A30/30
Inventor 李秋飞张玉贞柳卫军肖护兵戴辉王城彪戴大群
Owner JIANGSU TIANNUO ROAD MATERIAL TECH
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