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Cold-mixed colored asphalt cementing material and preparation method thereof

A technology for colored asphalt and cementitious materials, which is applied in building thermal insulation materials, building components, building structures, etc., can solve the problems of poor pigment adhesion and easy decolorization, technical difficulty, and poor rutting resistance, etc., to improve compatibility. , Improve the working environment, not easy to discolor and decolorize

Active Publication Date: 2019-10-01
禹智环保科技(深圳)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the late start of cold-mix colored asphalt binder technology in China, the technical difficulty is relatively large, especially in the enhancement of mechanical properties of materials and the adhesion of pigments. Poor water stability, poor durability, poor pigment adhesion and easy decolorization, etc.

Method used

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  • Cold-mixed colored asphalt cementing material and preparation method thereof
  • Cold-mixed colored asphalt cementing material and preparation method thereof

Examples

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preparation example Construction

[0030] In addition, the present invention also provides a method for preparing the above-mentioned cold-mix colored asphalt binder, comprising the following steps:

[0031] Step 1: After heating the aqueous dispersion of the porous material, add an anionic surfactant and an inorganic pigment, stir thoroughly, filter, and dry to obtain a modified color pigment; preferably, heat the emulsion to 80°C, and the stirring time is 15-45 minutes.

[0032] Step 2: After adding optional nano-calcium carbonate, nano-silica or nano-titanium dioxide into the dispersant for uniform dispersion, add a surface modifier, then heat, stir, evaporate and remove the dispersant, and obtain a modified inorganic nano-reinforced agent; preferably, ethanol is used as the dispersant, the heating temperature is 60-80° C., and the stirring time is 1-2 hours.

[0033] Step 3: Add optional SBS resin, styrene-butadiene rubber or polybutadiene rubber to the decolorized asphalt, heat and swell, and grind in a c...

Embodiment 1

[0039] The preparation method of the cold-mix colored permeable asphalt binder in this embodiment comprises the following steps:

[0040] The first step is to prepare modified color pigments

[0041] The pigment is iron oxide red (Fe 2 o 3 ). Disperse 70g of molecular sieves in water to make an emulsion, stir well and heat to 80°C, then add 3g of sodium fatty acid modifier, stir fully for 3min, then add 27g of iron oxide red (Fe 2 o 3 ), stirred for 30min, then filtered, and the filter cake was dried at 105°C as a modified color pigment.

[0042] The second step is to prepare modified inorganic nano-reinforcing agent

[0043]Using ethanol as a dispersant, add 80g of nano-calcium carbonate to 200mL of ethanol, stir fully to disperse the nano-calcium carbonate evenly, then add 2.4g of sodium dodecylbenzenesulfonate to the nano-calcium carbonate emulsion, and heat up to 80°C, and Stir for 1.5 hours, evaporate 70-85% of the ethanol to prepare a modified inorganic nano-reinfo...

Embodiment 2 to 3

[0052] Similar to the preparation method of Example 1, Examples 2 to 3 used the amount of raw materials shown in Table 1 to prepare cold-mix colored asphalt binder.

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Abstract

The invention relates to cold-mixed colored asphalt cementing material and a preparation method thereof. The cold-mixed colored asphalt cementing material is prepared from the following components bymass percent: modified asphalt, a tackifier, furfural, a solvent, a modified inorganic nano-enhancing agent and modified color pigment, wherein the modified inorganic nano-enhancing agent is preparedfrom a surface modifier and optional nano-calcium carbonate, nano-silica or nano-titanium dioxide, and the surface modifier is sodium dodecylbenzene sulfonate, sodium stearate or an aluminate couplingagent; the modified color pigments is prepared from inorganic pigment, an anionic surfactant, and a porous material. The preparation method not only improves the compatibility of the inorganic material and the asphalt, but also improves the tensile strength and the elongation elongation rate of the cementing material; furthermore, the chemical stability of the pigment is improved, so that color asphalt concrete is less prone to discoloration and decoloration.

Description

technical field [0001] The invention relates to the technical field of road paving materials, in particular to a cold-mix colored asphalt binder and a preparation method thereof. Background technique [0002] With the rapid economic development and the development of urbanization, the demand for infrastructure such as highways and urban roads is also increasing year by year. At the same time, people put forward higher requirements for the environmental protection and comfort of urban road materials. Cold-mix colored asphalt binder has the advantages of low carbon, environmental protection, convenient construction, low noise, high comfort, and strong guidance. It is currently widely used in parking lots, parks, sidewalks, bicycle lanes, residential roads, squares, etc. Pavement of motor vehicle pavements and urban roads. [0003] Compared with the traditional hot-mix asphalt pavement, the cold-mix colored asphalt pavement is mixed and paved at room temperature, so not only w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L9/00C08L63/00C08L31/04C08L27/06C08L23/12C08K13/06C08K9/04C08K3/26C08K3/36C08K3/22C08K5/1535C08K9/12
CPCC08K2003/2241C08K2003/2251C08K2003/2272C08K2003/265C08K2201/011C08L95/00C08L53/02C08L9/06C08L9/00C08L63/00C08L31/04C08L27/06C08L23/12C08K13/06C08K9/04C08K3/26C08K3/36C08K3/22C08K5/1535C08K9/12
Inventor 董鹏飞张卓然
Owner 禹智环保科技(深圳)有限公司
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