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 ar

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

Example Embodiment

[0058] Example 5 Performance test comparison

[0059] Test the performance of the asphalt materials of Examples 1 to 4 and the asphalt materials of Comparative Examples 1 to 2, such as high temperature performance, low temperature performance, workability, segregation, environmental impact, energy consumption, etc. The test methods are conventional methods in the field. The asphalt of the example and the comparative example was 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 [Highway Engineering Asphalt and Asphalt Mixture Subtest Regulations]. 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 Excellent Excellent it is good it is good Ea...

Example Embodiment

[0061] Example 6 Marshall stability test

[0062] According to JTG E-20-2011 [Highway Engineering Asphalt and Asphalt Mixture Sub-Test Regulations], the Marshall stability test of the asphalt materials of Examples 1 to 4 and the asphalt materials of Comparative Examples 1 to 2 was tested. Constant temperature at the specified temperature for 12 hours, the stability is measured, the results are as follows:

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

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

Example Embodiment

[0065] Example 7 Technical index

[0066] According to JTG E-20-2011 [Highway Engineering Asphalt and Asphalt Mixture Sub-Test Regulations], the penetration, penetration index, ductility, elastic recovery, softening point, kinematic viscosity and other parameters are measured. The data is as follows:

[0067] performance Penetration (25℃, 100g5s) 0.1mm Penetration index is not less than 15°C ductility 5cm / min Softening point℃ Elastic recovery 25℃ Kinematic viscosity Pa.s Example 1600.235056752.5 Example 286-0.205557601.8 Example 362 0.204053702.3 Example 476-0.106060782.0 Comparative example 162-0.303550652.0 Comparative example 263-0.523854581.8 No. 70 asphalt64-0.8815049-- Asphalt 9093-1.23128.345.5-- testing method T0604T0604T0605T0606T0662T0625

[0068] The data in Table 3 shows that the modified normal temperature asphalt of the present invention meets the requirements of the JTGF40-2004 specification, especially its ductility at low temperature is better than t...

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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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