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Road modified asphalt

A technology for modifying asphalt and roads, which is applied to building components, building insulation materials, buildings, etc., to achieve the effects of improving bonding strength and surface adhesion, reducing production and emissions, and low price

Inactive Publication Date: 2017-06-20
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing modifiers, there is no type that has obvious anti-aging and hot-mix emission reduction effects at the same time

Method used

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  • Road modified asphalt
  • Road modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The road modified asphalt in this example is made from the following raw materials: 100 parts of asphalt, 8 parts of hydroxyapatite powder, 2 parts of guanidinoacetic acid, 1.1 parts of 2,3,4-trihydroxybenzaldehyde, and 0.6 parts of sodium copper chlorophyllin , 0.5 part of 2,3-dimercaptosuccinic acid, 0.2 part of resorcinol; the asphalt is common base asphalt.

[0028] The preparation method of the present embodiment road modified asphalt is:

[0029] Step 1, heating the asphalt to 165°C, then adding hydroxyapatite powder, guanidinoacetic acid and sodium copper chlorophyllin to the heated asphalt and stirring evenly;

[0030] Step 2: Add 2,3,4-trihydroxybenzaldehyde to the asphalt with hydroxyapatite powder guanidinoacetic acid and sodium copper chlorophyllin in step 1, and then use a high-speed shear to add 2,3, The bitumen of 4-trihydroxybenzaldehyde is sheared 15min under the condition of 1900rpm at shear rate;

[0031] Step 3: Add 2,3-dimercaptosuccinic acid to t...

Embodiment 2

[0034] The road modified asphalt in this example is made from the following raw materials: 100 parts of asphalt, 11.5 parts of hydroxyapatite powder, 5.5 parts of guanidinoacetic acid, 2.35 parts of 2,3,4-trihydroxybenzaldehyde, and 0.75 parts of sodium copper chlorophyllin , 0.6 part of 2,3-dimercaptosuccinic acid, 0.25 part of resorcinol; the asphalt is SBS modified asphalt.

[0035] The preparation method of the present embodiment road modified asphalt is:

[0036] Step 1, heating the asphalt to 170°C, then adding hydroxyapatite powder, guanidinoacetic acid and sodium copper chlorophyllin to the heated asphalt and stirring evenly;

[0037] Step 2: Add 2,3,4-trihydroxybenzaldehyde to the asphalt with hydroxyapatite powder guanidinoacetic acid and sodium copper chlorophyllin in step 1, and then use a high-speed shear to add 2,3, The bitumen of 4-trihydroxybenzaldehyde is sheared 16min under the condition of 2100rpm at shear rate;

[0038] Step 3: Add 2,3-dimercaptosuccinic ...

Embodiment 3

[0041] The road modified asphalt in this example is made from the following raw materials: 100 parts of asphalt, 15 parts of hydroxyapatite powder, 9 parts of guanidinoacetic acid, 3.6 parts of 2,3,4-trihydroxybenzaldehyde, and 0.9 parts of sodium copper chlorophyllin , 0.7 parts of 2,3-dimercaptosuccinic acid, 0.3 parts of resorcinol; the asphalt is SBR modified asphalt.

[0042] The preparation method of the present embodiment road modified asphalt is:

[0043] Step 1, heating the asphalt to 175°C, then adding hydroxyapatite powder, guanidinoacetic acid and sodium copper chlorophyllin to the heated asphalt and stirring evenly;

[0044] Step 2: Add 2,3,4-trihydroxybenzaldehyde to the asphalt with hydroxyapatite powder guanidinoacetic acid and sodium copper chlorophyllin in step 1, and then use a high-speed shear to add 2,3, The pitch of 4-trihydroxybenzaldehyde was sheared for 18min under the condition of 2300rpm at a shear rate;

[0045] Step 3: Add 2,3-dimercaptosuccinic ...

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Abstract

The invention provides a road modified asphalt. The road modified asphalt is prepared from, by weight, 100 parts of asphalt, 8 to 15 parts of hydroxyapatite powder, 2 to 9 parts of guanidinoacetic acid, 1.1 to 3.6 parts of 2,3,4-Trihydroxybenzaldehyde, 0.6 to 0.9 part of sodium copper chlorophyll, 0.5 to 0.7 part of 2,3-dimercaptosuccinic acid, and 0.2 to 0.3 part of resorcinol. The road modified asphalt possesses excellent aging resistance and road using performance, is capable of reducing release amount of asphalt fume and waste gas in mixing and lying process of the road modified asphalt, and possesses excellent economic benefit and social benefit.

Description

[0001] (1) Technical field [0002] The invention belongs to the technical field of road asphalt, in particular to a road modified asphalt. [0003] (2) Background technology [0004] The durability of asphalt is the most important factor affecting the quality and life of asphalt pavement. When the pavement is paved, it is heated, and after the pavement is completed, it is affected by natural factors and traffic loads. The technical performance of asphalt will undergo an irreversible change in an unsatisfactory direction, that is, the aging of asphalt. Affected by the aging of asphalt, the physical and mechanical properties of asphalt mixture decrease year by year until it cannot meet the requirements of traffic load. [0005] In addition, the mixing temperature of hot-mix asphalt, which is widely used in road construction and maintenance, is generally above 160°C. For rubber asphalt and partially modified asphalt, the mixing temperature is even as high as 190°C. This not only...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K13/02C08K3/32C08K5/31C08K5/13C08K5/37
CPCC08K3/32C08K5/13C08K5/31C08K5/37C08K13/02C08K2003/325C08K2201/014C08L2201/08C08L95/00
Inventor 贾倩
Owner SHANDONG JIAOTONG UNIV
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