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Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof

A normal temperature asphalt and bitumen technology, used in building thermal insulation materials, building components, buildings, etc., can solve the problems of reduced adhesion between asphalt and fine aggregates, complex treatment of rubber-modified asphalt, and complex preparation processes, and achieve high plasticity. , low cost and simple preparation process

Inactive Publication Date: 2013-04-17
重庆畅鑫路面建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The prior art disclosed above has some deficiencies, such as currently commonly used cold-mixed and cold-paved asphalt modifiers mainly based on SBS and SBR, the preparation process is complicated, and the cost is expensive; the prior art using waste rubber as asphalt modifier The processing of rubber-modified asphalt is very complicated and costly, or the rubber content is too high, resulting in reduced adhesion between asphalt and fine aggregate, and poor spalling resistance

Method used

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  • Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 5

[0058] Example 5 Performance Test Comparison

[0059] Test the properties of the asphalt materials in Examples 1-4 and Comparative Examples 1-2, such as high-temperature performance, low-temperature performance, ease of construction, segregation, environmental impact, energy consumption, etc. The testing methods are all conventional methods in this field. The asphalt of the examples and the comparative examples were mixed with the fine aggregate to form a mixture, and the performance test was carried out according to the performance measurement experiment of JTG E-20-2011 [Sub-Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering]. The results are shown in Table 1 below:

[0060] performance Example 1 Example 2 Example 3 Example 4 Comparative example 1 Comparative example 2 high temperature performance excellent excellent excellent excellent poor it is good high temperature performance excellent excellent ...

Embodiment 6

[0061] Example 6 Marshall stability test

[0062] According to JTG E-20-2011 [highway engineering asphalt and asphalt mixture sub-test regulations] test the Marshall stability test of the mixture of the asphalt material of Examples 1-4 and the asphalt material of Comparative Examples 1-2. Keep the temperature at the specified temperature for 12 hours, and measure the stability. The results are shown in Table 2 below:

[0063] Table 2: Stability test results (unit KN)

[0064] The data in Table 2 show that the stability of the modified normal temperature asphalt of the present invention is better than or equal to that of SBS or SBR modified asphalt.

Embodiment 7

[0065] Example 7 technical indicators

[0066] According to the provisions of JTG E-20-2011 [Sub-Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering], parameters such as penetration, penetration index, ductility, elastic recovery, softening point, and kinematic viscosity were measured. The data is as follows:

[0067] performance Penetration (25°C, 100g5s) 0.1mm The penetration index is not less than 15℃ ductility 5cm / min Softening point ℃ Elastic recovery at 25°C Kinematic viscosity Pa.s Example 1 60 0.23 50 56 75 2.5 Example 2 86 -0.20 55 57 60 1.8 Example 3 62 0.20 40 53 70 2.3 Example 4 76 -0.10 60 60 78 2.0 Comparative example 1 62 -0.30 35 50 65 2.0 Comparative example 2 63 -0.52 38 54 58 1.8 No. 70 asphalt 64 -0.88 150 49 - - No. 90 asphalt 93 -1.23 128.3 45.5 - - testing method T0604 T0604 T0605 T0606 T0662 T0625

[0068...

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PUM

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Abstract

The invention discloses modified cold-stirred and cold-spread room temperature bitumen which comprises the following components by weight percentage: 60-80% of bitumen, 5-15% of rubber resin, 2-6% of activated carbon, 3-8% of a diluent, 4-10% of resin, 3-8% of an anti-stripping agent and 2-5% of a curing agent. The preparation method comprises the steps of heating bitumen to 80-100 DEG C, adding resin to bitumen, cooling to 70 DEG C, adding the diluent, stirring, controlling the temperature between 80 DEG and 90 DEG C, adding rubber powder, the anti-stripping agent and the activated carbon, stirring uniformly, finally adding the curing agent and stirring uniformly.

Description

technical field [0001] The invention belongs to the field of road pavement materials, and in particular relates to a modified cold-mixed cold-paved normal-temperature asphalt and a preparation method thereof. Background technique [0002] Driving comfort is the basic requirement of people for pavement quality. The traditional cement concrete pavement has poor flexibility, serious damage and heavy maintenance. Asphalt pavement has good driving comfort and excellent performance, fast construction speed and convenient maintenance; at the same time, asphalt pavement can reduce noise and dust pollution caused by driving, and has been widely used in urban roads and expressways. [0003] In China, most asphalt pavements use hot mix asphalt mixture. Due to the limitations of hot mix asphalt mixture itself, a series of technical problems have been brought to the construction of asphalt pavement: ① When mixing hot mix asphalt mixture Asphalt and aggregate are required to have a highe...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L21/00C08L45/02C08L75/04C08K3/04C08K5/01C04B26/26
Inventor 赵延明陈永红蒋昌友段绍轩
Owner 重庆畅鑫路面建筑材料有限公司
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