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Chemical modified rubber asphalt with stable performance and preparation method thereof

A chemical modification, rubber asphalt technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of softening point and viscosity attenuation, high temperature performance without considering the attenuation of rubber asphalt performance indicators, etc., to achieve high temperature performance improvement, The preparation process is simple and feasible, and the effect of improving compatibility

Active Publication Date: 2015-01-14
GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) During the storage and transportation of rubber asphalt, rubber powder will continue to swell and degrade, resulting in the attenuation of softening point and viscosity, which limits the use of ready-mixed and ready-to-use rubber asphalt;
This method can improve the distribution uniformity of waste rubber powder in asphalt, but it does not consider the attenuation of performance indicators such as softening point and viscosity of rubber asphalt and the improvement of high temperature performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The chemically modified rubber asphalt of this embodiment is prepared by adding 100 parts of road petroleum asphalt to 20 parts of modified rubber powder with a mesh number of 30 to 40 in parts by weight; and the modified rubber powder is prepared by the following weight: The composition of parts ratio: absolute ethanol: modified water glass with a modulus of 1.2: rubber powder=80:10:10.

[0030] Concrete preparation process is as follows:

[0031] (1) Preparation of modified rubber powder:

[0032] First, the modified water glass with a modulus of 1.2 is prepared by using industrial sodium water glass and industrial caustic soda;

[0033] Then, adding absolute ethanol, modified water glass and rubber powder into the container in sequence according to the weight ratio of each component for mixing, and stirring the mixed raw materials in a water bath at 70° C. for 2 hours;

[0034] Finally, after the stirring, the rubber powder was filtered out, and aged at room temper...

Embodiment 2

[0039]The chemically modified rubber asphalt of this embodiment is prepared by adding 100 parts of road petroleum asphalt to 20 parts of modified rubber powder with a mesh number of 40 to 50 in parts by weight; and the modified rubber powder is prepared by the following weight: The composition of parts ratio: absolute ethanol: modified water glass with a modulus of 1.6: rubber powder=75:15:10.

[0040] Concrete preparation process is as follows:

[0041] (1) Preparation of modified rubber powder:

[0042] First, the modified water glass with a modulus of 1.6 is prepared by using industrial sodium water glass and industrial caustic soda;

[0043] Then, add absolute ethanol, modified water glass and rubber powder into the container in sequence according to the weight ratio of each component for mixing, and stir the mixed raw materials in a water bath at 80° C. for 2 hours;

[0044] Finally, after the stirring, the rubber powder was filtered out, and aged at room temperature fo...

Embodiment 3

[0049] The chemically modified rubber asphalt of this embodiment is prepared by adding 100 parts of road petroleum asphalt to 20 parts of modified rubber powder with a mesh number of 50 to 60 in parts by weight; and the modified rubber powder consists of the following weight The composition of parts ratio: absolute ethanol: modified water glass with a modulus of 1.8: rubber powder=75:10:15.

[0050] Concrete preparation process is as follows:

[0051] (1) Preparation of modified rubber powder:

[0052] First, the modified water glass with a modulus of 1.8 is prepared by using industrial sodium water glass and industrial caustic soda;

[0053] Then, add absolute ethanol, modified water glass and rubber powder into the container in sequence according to the weight ratio of each component for mixing, and stir the mixed raw materials in a water bath at 80° C. for 2 hours;

[0054] Finally, after the stirring, the rubber powder was filtered out, aged at room temperature for 12 ho...

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Abstract

The invention discloses chemical modified rubber asphalt with stable performance and a preparation method thereof. In parts by weight, the chemical modified rubber asphalt is prepared through adding 100 parts of road petroleum asphalt into 18-25 parts of modified rubber powder, wherein the modified rubber powder is composed of the components including ethanol, sodium silicate and rubber powder in a weight part ratio of (75-85): (5-15): (5-15). The technological process of the preparation method comprises the following steps of: (1) preparing the modified rubber powder; and (2) preparing the rubber asphalt. The method is simple in production process and easy to implement, and can be used for producing high-quality chemical modified rubber asphalt with high temperature stability and storage-resistant stability.

Description

technical field [0001] The invention relates to a rubber asphalt material, in particular to a chemically modified rubber asphalt with stable performance and a preparation method thereof. Background technique [0002] In the past two decades, SBS modified asphalt has become an important part of the field of road asphalt concrete due to its excellent performance, such as good high temperature resistance, low temperature resistance, good anti-rutting ability, good elasticity and toughness, etc. The most important pavement material. However, with the rapid development of my country's traffic construction and the continuous increase of oil prices, the cost of SBS modified asphalt is getting higher and higher, which limits the development of road construction. Finding a modified asphalt technology with properties equivalent to SBS modified asphalt and cheaper has become the focus of research and application at home and abroad. In recent years, rubber asphalt has the advantages o...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L21/00C08K3/34C08K9/02
Inventor 何立平谭华覃润浦刘乐平谢成
Owner GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD