Environment-friendly asphalt cold mixing material and preparation method thereof

Abstract

The invention discloses an environment-friendly asphalt cold-mixed material and a preparation method thereof, and relates to the technical field of cold-mixed asphalt materials, the environment-friendly asphalt cold-mixed material comprises the following raw materials by weight: 40-45 parts of a diluent; 2-5 parts of a compatilizer and 1.0-2.5 parts of SBR latex; 0.5 to 1.2 parts of SBS (styrene butadiene styrene) latex; 2.5 to 3.5 parts of an emulsifier; 48 to 55 parts of deionized water; 0.5 to 1.3 parts of polyurea; 0.03 to 0.05 part of an accelerant; the diluent is one or two of No.3 white oil and No.15 white oil, and the diluent is one or two of No.3 white oil and No.15 white oil. The environment-friendly asphalt cold mixing material prepared by taking the white oil as a diluent is prepared into a standard Marshall test at normal temperature and has better intermittent stability, and the white oil is close to solvent oil due to the special attribute and boiling point of the white oil, so that the environment-friendly asphalt cold mixing material better meets the green and environment-friendly requirements.

Description

Technical Field

[0001] The invention relates to the technical field of cold-mix asphalt materials, in particular to an environmentally friendly cold-mix asphalt material and a preparation method thereof. Background Art

[0002] White oil is colorless, odorless, chemically inert, and has good light stability. Its main components are a mixture of C16-C31 normal isomeric alkanes and a small amount of aromatic hydrocarbons with alkane side chains. Aromatic hydrocarbons, nitrogen, oxygen, sulfur and other substances are close to zero. It is obtained from the high-boiling fraction (i.e., lubricating oil fraction) of petroleum fractionation after dewaxing, carbonization, neutralization, and activated clay refining. It has good oxidation stability and lubricity. White oil is the most widely used oil-soluble raw material in cosmetics. It can be used to prepare almost all cosmetics such as bath oils, various skin care creams, honey, hair care products, lipsticks, etc. It can also be used as a surface treatment agent, lubricant, release agent and plasticizer.

[0003] Currently, most solvent-based cold patch materials use solvent oil or diesel as diluents. Solvent oil and diesel are stable in nature but are aromatic hydrocarbons, which are highly irritating and pollute the environment.

[0004] In response to the above problems, white oil is more in line with green environmental protection requirements due to its special properties and boiling point close to solvent oil. We provide an environmentally friendly asphalt cold mix and its use method to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an environmentally friendly asphalt cold mix and a preparation method thereof, so as to solve the technical problems in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An environmentally friendly asphalt cold mix comprises the following raw materials by weight: 40-45 parts of a diluent; 2-5 parts of a compatibilizer, 1.0-2.5 parts of an SBR latex; 0.5-1.2 parts of an SBS latex; 2.5-3.5 parts of an emulsifier; 48-55 parts of deionized water; 0.5-1.3 parts of polyurea; 0.03-0.05 parts of an accelerator; and 1-3 parts of Si69, wherein the diluent is one or both of No. 3 white oil and No. 15 white oil.

[0008] Furthermore, the compatibilizer is one or more combinations of No. 120 solvent oil, No. 200 solvent oil, and diesel.

[0009] Furthermore, the emulsifier is one or more combinations of fatty alcohol polyoxyethylene ether, fatty alcohol polyoxypropylene ether, methyl stearate polyoxyethylene ether, and methyl coconut oil polyoxyethylene ether.

[0010] Furthermore, the accelerator is one of DMP-30 and K54.

[0011] Another object of the present invention is to provide a method for preparing an environmentally friendly asphalt cold mix, which specifically comprises the following steps:

[0012] S1: All materials were mixed under a high-speed shearing machine at 3000 r / min for 3 min to obtain modified asphalt;

[0013] S2: 100 parts of base asphalt and 15-25 parts of modified asphalt cold mix agent are mixed evenly according to the mass ratio to prepare cold mix asphalt;

[0014] S3: Mix 100 parts of aggregate with 4.5-5.5 parts of cold mix asphalt at room temperature according to the mass ratio to make an environmentally friendly cold mix asphalt.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The environmentally friendly asphalt cold mix prepared by the present invention by using white oil as a diluent has better Marshall stability when prepared into a standard Marshall test at room temperature. Moreover, the white oil meets the green environmental protection requirements more due to its special properties and boiling point close to that of solvent oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1

[0020] A method for preparing an environmentally friendly asphalt cold mix:

[0021] S1: The raw materials in parts by weight include: 40-45 parts of No. 3 white oil as a diluent; 2-5 parts of a compatibilizer, 1.0-2.5 parts of SBR latex; 0.5-1.2 parts of SBS latex; 2.5-3.5 parts of an emulsifier; 48-55 parts of deionized water; 0.5-1.3 parts of polyurea; 0.03-0.05 parts of an accelerator; and 0.5-1 parts of sulfur. All the materials are mixed at a high-speed shearing machine at 3000 r / min for 3 minutes to obtain a modified asphalt.

[0022] S2: 100 parts of base asphalt and 15-25 parts of modified asphalt cold mix agent are mixed evenly according to the mass ratio to prepare cold mix asphalt;

[0023] S3: Mix 100 parts of aggregate with 4.5-5.5 parts of cold mix asphalt at room temperature according to the mass ratio to make an environmentally friendly cold mix asphalt.

[0024] The environmentally friendly asphalt cold mix prepared by the present invention is prepared into a standard Marshall specimen at room temperature, and the Marshall stability is measured to be 11.8 KN according to the specimen preparation and testing method in JT / T972-2015.

[0025] Example 2

[0026] See also Figure 1 , a method for preparing an environmentally friendly asphalt cold mix:

[0027] S1: The raw materials in parts by weight include: 40-45 parts of No. 15 white oil as a diluent; 2-5 parts of a compatibilizer, 1.0-2.5 parts of SBR latex; 0.5-1.2 parts of SBS latex; 2.5-3.5 parts of an emulsifier; 48-55 parts of deionized water; 0.5-1.3 parts of polyurea; 0.03-0.05 parts of an accelerator; and 0.5-1 parts of sulfur. All the materials are mixed at a high-speed shearing machine at 3000 r / min for 3 minutes to obtain a modified asphalt.

[0028] S2: 100 parts of base asphalt and 15-25 parts of modified asphalt cold mix agent are mixed evenly according to the mass ratio to prepare cold mix asphalt;

[0029] S3: Mix 100 parts of aggregate with 4.5-5.5 parts of cold mix asphalt at room temperature according to the mass ratio to prepare an environmentally friendly cold mix asphalt;

[0030] The environmentally friendly asphalt cold mix prepared by the present invention is prepared into a standard Marshall specimen at room temperature, and the Marshall stability is measured to be 12.3 KN according to the specimen preparation and testing method in JT / T972-2015.

[0031] Example 3

[0032] The raw materials of the control example include by weight: 40-45 parts of solvent oil as a diluent; 1.0-2.5 parts of SBR; 2.5-3.5 parts of non-ionic surfactant; 48-55 parts of deionized water; 0.3-0.5 parts of accelerator, and the asphalt mixture is prepared by traditional technology.

[0033] The asphalt mixture prepared in Example 3 was prepared into a standard Marshall specimen at room temperature, and the Marshall stability was measured to be 4.3 KN according to the specimen preparation and testing method in JT / T 972-2015.

[0034] By comparing Examples 1, 2 and 3, it can be seen that the standard Marshall test prepared at room temperature by using white oil as a diluent has better Marshall stability, and white oil is more in line with green environmental protection requirements due to its special properties and boiling point close to that of solvent oil.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Although this specification is described in accordance with the implementation modes, not every implementation mode includes only one technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An environmentally friendly asphalt cold mix, characterized by: The raw materials in parts by weight include: 40-45 parts of diluent; 2-5 parts of compatibilizer, 1.0-2.5 parts of SBR latex; 0.5-1.2 parts of SBS latex; 2.5-3.5 parts of emulsifier; 48-55 parts of deionized water; 0.5-1.3 parts of polyurea; 0.03-0.05 parts of accelerator; 1-3 parts of Si69, wherein the diluent is one or both of No. 3 white oil or No. 15 white oil.

2. The environmentally friendly asphalt cold mix according to claim 1, characterized in that: The compatibilizer is one or more combinations of No. 120 solvent oil, No. 200 solvent oil, and diesel.

3. The environmentally friendly asphalt cold mix according to claim 2, characterized in that: The emulsifier is one or more combinations of fatty alcohol polyoxyethylene ether, fatty alcohol polyoxypropylene ether, methyl stearate polyoxyethylene ether, and methyl coconut oil polyoxyethylene ether.

4. The environmentally friendly asphalt cold mix according to claim 1, characterized in that: The accelerator is one of DMP-30 and K54.

5. A method for preparing an environmentally friendly asphalt cold mix, according to any one of claims 1 to 4, characterized in that: The steps include: S1: All materials were mixed under a high-speed shearing machine at 3000 r / min for 3 min to obtain modified asphalt; S2: 100 parts of base asphalt and 15-25 parts of modified asphalt cold mix agent are mixed evenly according to the mass ratio to prepare cold mix asphalt; S3: Mix 100 parts of aggregate with 4.5-5.5 parts of cold mix asphalt at room temperature according to the mass ratio to make an environmentally friendly asphalt cold mix.

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