CN116063861B - Special emulsified asphalt with regeneration capacity for early-strength cold regeneration and preparation method thereof - Google Patents

Abstract

The application relates to the technical field of road materials, and particularly discloses early-strength type cold-recycling special emulsified asphalt with recycling capability and a preparation method thereof. The special emulsified asphalt for early-strength cold regeneration with regeneration capability is prepared by mixing materials A, B and C, wherein the materials A comprise the following components in parts by weight: 98-102 parts of asphalt, 1-2 parts of first emulsifier and 40-50 parts of water; the material B is obtained by mixing oil emulsion and inorganic acid, and the oil emulsion comprises the following components in parts by weight: 10-40 parts of oil, 2-3 parts of a second emulsifier and 30-40 parts of water; the material C comprises the following components in parts by weight: 0.1-0.5 part of polycarboxylate, 0.1-1 part of lignosulfonate and 20-30 parts of water. The method promotes the fusion of the waste asphalt mixture and the oil, improves the regeneration effect of the waste asphalt mixture, accelerates the occurrence of demulsification, and finally improves the early strength performance of the cold-recycling mixture.

Description

Special emulsified asphalt with regeneration capacity for early-strength cold regeneration and preparation method thereof

Technical Field

The application relates to the technical field of road materials, in particular to early-strength type cold-recycling special emulsified asphalt with recycling capability and a preparation method thereof.

Background

At present, along with the progress of highway maintenance, the waste asphalt mixture is also produced in a large quantity, the waste asphalt mixture produced by highway maintenance in China is up to hundreds of millions of tons each year, and the huge amount of waste asphalt mixture causes serious pollution to the environment and occupies a large amount of land resources, so that a proper mode needs to be searched for recycling the waste asphalt mixture.

In the related art, there is a cold recycling process of a waste asphalt mixture, the process mixes the waste asphalt mixture with emulsified asphalt and silicate cement to obtain the cold recycling mixture, and the emulsified asphalt selected by the process is formed by mixing the following components in parts by weight: 100 parts of matrix asphalt, 3-5 parts of emulsifier, 150-170 parts of water and 10-40 parts of oil. In the process, the regeneration of the waste asphalt mixture is realized by utilizing the fusion of oil content and aged asphalt on the surface of the waste asphalt mixture. In the health-preserving process, the demulsification of the emulsified asphalt and the hydration of the silicate cement jointly form strength, so that the cold-recycling mixture has certain working performance.

In view of the above-mentioned related art, the inventors believe that, although the regeneration of the waste asphalt mixture is achieved in the related art, in this process, in order to sufficiently hydrate cement, excessive water is added to the emulsified asphalt, so that the demulsification of the emulsified asphalt is slow, and the early strength performance of the cold-regenerated mixture is affected. Meanwhile, in the process of preparing emulsified asphalt, the matrix asphalt and oil compete for emulsifier molecules, so that the emulsification effect of the oil is affected to a certain extent, the fusion of the waste asphalt mixture and the oil is affected, and the early strength performance of the cold recycling mixture is not improved.

Disclosure of Invention

In the related art, the excessive moisture makes demulsification of the emulsified asphalt slow, and affects the early strength performance of the cold-recycling mixture. The competition of the matrix asphalt and the oil on the emulsifier molecules influences the emulsification of the oil, influences the fusion of the waste asphalt mixture and the oil, and is not beneficial to improving the early strength performance of the cold recycling mixture. In order to overcome the defect, the application provides the emulsified asphalt special for early-strength cold regeneration with regeneration capability and a preparation method thereof.

In a first aspect, the present application provides an emulsified asphalt special for early-strength cold recycling with recycling capability, which adopts the following technical scheme:

the special emulsified asphalt for early-strength cold regeneration with regeneration capability is prepared by mixing materials A, B and C, wherein the materials A comprise the following components in parts by weight: 98-102 parts of asphalt, 1-2 parts of first emulsifier and 40-50 parts of water; the material B is obtained by mixing oil emulsion and inorganic acid, and the oil emulsion comprises the following components in parts by weight: 10-40 parts of oil, 2-3 parts of a second emulsifier and 30-40 parts of water; the material C comprises the following components in parts by weight: 0.1-0.5 part of polycarboxylate, 0.1-1 part of lignosulfonate and 20-30 parts of water.

Through adopting above-mentioned technical scheme, this application uses different emulsifying agents to emulsify oil content and pitch material respectively, has obtained the A material that contains pitch microballon and the B material that contains oil content microballon, has reduced the influence that pitch caused the emulsification process of oil content. Meanwhile, the C material is additionally arranged in an emulsified asphalt system, and polycarboxylate and lignosulfonate are introduced. On the surface of asphalt microsphere, polycarboxylate and lignosulfonate are in competitive adsorption relationship with emulsifier. After the materials A, B and C are mixed, polycarboxylate, lignosulfonate and asphalt microspheres are adsorbed, so that the adsorption quantity of asphalt molecules to a second emulsifier on the surface of the oil component microspheres is reduced, the competition of asphalt to the second emulsifier is relieved, the oil component is fully emulsified, the fusion of the waste asphalt mixture and the oil component is promoted, and the early strength performance of the cold recycling mixture is improved.

The polycarboxylate and the lignosulfonate in the material C can be used as water reducing agents to reduce the water demand of cement besides improving the emulsification effect of oil, so that the emulsified asphalt can be prepared under the condition of relatively low water consumption. The reduction of water consumption accelerates demulsification in the emulsified asphalt system, and helps to improve early strength performance of the cold-recycling mixture.

Preferably, the pH of the material B is 1.5-1.8.

By adopting the technical scheme, the pH value of the material B is optimized, the fusion effect of the oil component and the waste asphalt mixture is good within the pH range of 1.5-1.8, and the early strength performance of the cold recycling mixture is improved.

Preferably, the mineral acid has a pKa of 1 to 4.

By adopting the technical scheme, when the pKa of the inorganic acid is less than 1, the thickness of the overall charge in the emulsified asphalt system is too large, which is not beneficial to demulsification of asphalt microspheres. When inorganic acid with pKa between 1 and 4 is used, the asphalt microsphere has relatively poor stability and is easier to break emulsion, so that the strength of the cold-recycling mixture is faster to develop and the early strength performance is better.

Preferably, the asphalt has an acid value of 4.2 to 4.4mgKOH/g.

By adopting the technical scheme, when the acid value of the asphalt material is in the range of 4.2-4.4mgKOH/g, the demulsification of the asphalt microspheres is easier, and the early strength performance of the cold-recycling mixture is improved.

Preferably, the asphalt material is obtained by mixing a matrix asphalt with an acid value of 2.7-4.0mgKOH/g with an organic acid.

By adopting the technical scheme, under the condition that natural asphalt with an acid value of 4.2-4.4mgKOH/g is difficult to obtain, after the matrix asphalt with a relatively low acid value is modified by the organic acid, the acid value is increased to be in the range of 4.2-4.4mgKOH/g, and the matrix asphalt can also replace the natural asphalt with the acid value mgKOH/g for use, so that the raw material source of the emulsified asphalt is widened, and the obtaining difficulty of the emulsified asphalt raw material is reduced.

Preferably, the organic acid is at least one of oleic acid, tartaric acid and benzoic acid.

By adopting the technical scheme, the oleic acid can be recovered from the waste water and the waste oil of the catering industry, the tartaric acid can be recovered from the grape waste, the benzoic acid can be recovered from the industrial waste water, the three organic acids can realize the acidification modification of asphalt, and a reasonable way for recycling the waste is provided.

Preferably, the component of the material C further comprises 1-5 parts by weight of styrene-butadiene latex.

By adopting the technical scheme, the styrene-butadiene latex can plug capillary holes left after cement hydration, so that the mechanical property of the cold-recycling mixture is improved, and the early strength of the cold-recycling mixture is improved.

Preferably, the first emulsifier and the second emulsifier are both cationic emulsifiers, and the component of the material C further comprises 1-5 parts by weight of carboxyl styrene-butadiene latex.

By adopting the technical scheme, when the first emulsifier and the second emulsifier are both cationic emulsifiers, the surfaces of the asphalt microspheres are positively charged. At this time, carboxyl groups on the surface of the carboxyl styrene-butadiene latex can be adsorbed on the surface of asphalt, and positive charges on the surface of asphalt microspheres are shielded, so that electrostatic repulsive force between the asphalt microspheres is reduced, aggregation of the asphalt microspheres is promoted, and the early strength effect of the cold-recycling mixture is improved.

Preferably, the component of the material C further comprises 0.6-1.0 parts by weight of triisopropanolamine.

By adopting the technical scheme, in the cold-recycling mixture, the emulsified asphalt can prevent hydration of tricalcium silicate phase, so that the strength development of silicate cement is slowed down. The triisopropanolamine can be complexed with the tetracalcium aluminoferrite in the silicate cement, so that the hydration rate of the tetracalcium aluminoferrite phase is accelerated, the strength development rate of the silicate cement is improved, and the early strength performance of the cold-recycling mixture is improved.

In a second aspect, the present application provides a method for preparing emulsified asphalt dedicated for early-strength cold recycling with recycling capability, which adopts the following technical scheme.

The preparation method of the emulsified asphalt special for early strength cold regeneration with regeneration capability comprises the following steps:

(1) Mixing a first emulsifier with water to obtain a first soap solution, and adding the first soap solution and asphalt into a colloid mill to mix to obtain a material A; mixing a second emulsifier with water to obtain a second soap solution, adding the second soap solution and oil with the temperature of 90-110 ℃ into a colloid mill, mixing to obtain an oil emulsion, and adding inorganic acid into the oil emulsion to adjust the pH value to obtain a material B;

(2) And mixing the material A and the material B, adding any material C into the obtained mixture, and stirring to obtain the early-strength cold-recycling special emulsified asphalt with the recycling capability.

Through adopting above-mentioned technical scheme, this application has prepared material A and material B respectively earlier, then mixes material A and material B with the C material, has obtained the special emulsified asphalt of early strength formula cold regeneration that possesses regeneration ability. Because the emulsification of the material A and the material B is carried out separately, and the material C introduces polycarboxylate and lignosulfonate, the possibility that oil and asphalt compete with each other for the emulsifier is reduced. Meanwhile, the introduction of polycarboxylate and lignosulfonate reduces the water demand of cement, so that emulsified asphalt can be prepared under relatively low water consumption, and demulsification can be performed more quickly, and early strength is realized.

In summary, the present application has the following beneficial effects:

1. according to the method, the oil and the asphalt are respectively emulsified and then mixed, and the polycarboxylate and the lignosulfonate are added, so that the influence of the asphalt on the emulsification of the oil is reduced, the fusion of the waste asphalt mixture and the oil is promoted, the regeneration effect of the waste asphalt mixture is improved, the water demand of cement is reduced due to the addition of the polycarboxylate and the lignosulfonate, and the demulsification is accelerated. Improving the early strength performance of the cold-recycling mixture.

2. The component of the preferable C material in the application also comprises carboxyl styrene-butadiene latex, and on the premise that the surfactant is a cationic surfactant, the carboxyl styrene-butadiene latex can be adsorbed on the surface of the asphalt microsphere through carboxyl to shield positive charges on the surface of the asphalt microsphere, so that electrostatic repulsion between the asphalt microspheres is reduced, aggregation of the asphalt microspheres is promoted, and the early strength effect of the cold-recycling mixture is improved.

Detailed Description

The following examples and comparative examples are provided to further illustrate the present application in detail, wherein the raw materials involved in the present application are all commercially available, and the regenerated oil is formed by mixing heavy naphthenic oil, aromatic oil, white oil, and furfural extract oil in a weight ratio of 1:1:1:1, oleic acid is recovered from restaurant wastewater and waste oil, tartaric acid is recovered from grape waste, and benzoic acid is recovered from industrial wastewater.

Examples

Examples 1 to 5

The following description will take example 1 as an example.

Example 1

In this example, the emulsified asphalt special for early strength cold recycling with recycling capability is prepared according to the following steps:

(1) Mixing 1kg of a first emulsifier with 40kg of water to obtain a first soap solution, and adding 98kg of asphalt material into a colloid mill to mix to obtain a material A; mixing 2kg of a second emulsifier with 30kg of water to obtain a second soap solution, adding 10kg of oil with the temperature of 100 ℃ into a colloid mill to mix to obtain an oil emulsion, and adding inorganic acid into the oil emulsion to adjust the pH to 2.0 to obtain a material B; in the step, inorganic acid is hydrochloric acid, asphalt material is natural matrix asphalt with an acid value of 4.0mgKOH/g, the first emulsifier is INDULIN W-5, and the second emulsifier is INDULIN SBT-50;

(2) Mixing the material A and the material B, adding the material C into the obtained mixture, and stirring to obtain the early-strength cold-recycling special emulsified asphalt with the recycling capability; in this step, the material C was prepared by mixing 0.1kg of sodium polycarboxylate, 0.1kg of sodium lignin sulfonate and 20kg of water.

As shown in Table 1, examples 1 to 5 were different in that the amounts of the partial materials of the A material, the B material and the C material were different.

TABLE 1

Examples 6 to 9

As shown in Table 2, examples 6-9 were different from example 3 in that the pH of the oil emulsion was adjusted using a mineral acid to obtain a B material having a different pH.

Table 2 pH of the material

Sample of	Example 3	Example 6	Example 7	Example 8	Example 9
						pH of the material B	2.0	1.8	1.6	1.5	1.4

Example 10

This example differs from example 7 in that polyphosphoric acid was used as the inorganic acid that adjusts the pH of the oil emulsion.

Examples 11 to 14

As shown in Table 3, the practice was conducted 11-14 different from example 7 in that the asphalt used was a natural base asphalt having a different acid value.

TABLE 3 Table 3

Sample of	Example 7	Example 11	Example 12	Example 13	Example 14
						Acid value/(mgKOH/g)	4.0	4.2	4.3	4.4	4.5

Examples 15 to 19

As shown in Table 4, examples 15-19 were different from example 12 in that asphalt was obtained by mixing natural base asphalt having a different initial acid value with an organic acid, preferably oleic acid, to an acid value of 4.3 mgKOH/g.

TABLE 4 initial acid number of Natural matrix asphalt before mixing with organic acid

Sample of	Example 15	Example 16	Example 17	Example 18	Example 19
						Initial acid value/(mgKOH/g)	4.0	3.7	3.4	3.0	2.7

Example 20

This example differs from example 19 in that tartaric acid is used as the organic acid for the preparation of the pitch.

Example 21

This example differs from example 19 in that benzoic acid is used as the organic acid for formulating the asphalt.

Example 22

This example differs from example 3 in that the composition of the C stock also comprises 0.5kg of styrene-butadiene latex.

As shown in Table 5, examples 22-26 differ in the amount of styrene-butadiene latex used.

TABLE 5 styrene-butadiene latex dosage

Sample of	Example 22	Example 23	Example 24	Example 25	Example 26
						Styrene-butadiene latex/kg	0.5	1	3	5	7

Example 27

This example differs from example 3 in that the composition of the C stock also comprises 0.5kg of carboxylated styrene-butadiene latex.

As shown in Table 6, examples 27 to 31 were different in the amount of the carboxylated styrene-butadiene latex.

TABLE 6

Sample of	Example 27	Example 28	Example 29	Example 30	Example 31
						Carboxylated styrene-butadiene latex/kg	0.5	1	3	5	7

Example 32

This example differs from example 3 in that the composition of the C stock also comprises 0.6kg triisopropanolamine.

As shown in Table 7, examples 32-36 differ in the amount of triisopropanolamine used.

TABLE 7

Sample of	Example 32	Example 33	Example 34	Example 35	Example 36
						Triisopropanolamine/kg	0.6	0.7	0.8	0.9	1.0

Comparative example

Comparative example 1

The comparative example provides emulsified asphalt which is prepared by mixing the following components: 100kg of matrix asphalt, 4kg of emulsifier, 165kg of water and 25kg of oil, wherein the matrix asphalt is natural matrix asphalt with an acid value of 4.0mgKOH/g, the oil is mineral white oil, and the model of the emulsifier is INDULIN SBT-50.

Comparative example 2

This comparative example differs from example 3 in that the components of the C batch do not include sodium polycarboxylate and sodium lignosulfonate.

Comparative example 3

The comparative example is different from example 3 in that the components of the materials A and B are directly mixed, and the mixture is stirred to obtain a composite emulsion, and then the composite emulsion is mixed with the material C to obtain emulsified asphalt.

Performance detection test method

Taking 3kg of emulsified asphalt of each example and comparative example, mixing 3kg of emulsified asphalt with 2kg of P.O42.5 Portland cement and 60kg of waste asphalt mixture, stirring to obtain cold recycled asphalt mixture, performing product making according to the test piece manufacturing method (compaction method) of T0702-2011 asphalt mixture, curing the test piece in a standard curing room with the temperature of 20+/-0.5 ℃ and the humidity of 55+/-2% for 24 hours, and then performing test according to the test procedure of JTG E20-2011 highway engineering asphalt and asphalt mixture

The Marshall stability of the test piece was measured, the ratio between the Marshall stability measured in each example and comparative example and the Marshall stability in comparative example 1 was calculated, and the results were recorded as relative stability, and the results are shown in Table 8.

TABLE 8

Sample of	Relative stability/%	Sample of	Relative stability/%
				Example 1	139.3	Example 21	139.9
Example 2	137.4	Example 22	136.4
				Example 3	135.6	Example 23	137.9
Example 4	134.5	Example 24	138.7
				Example 5	133.7	Example 25	139.1
Example 6	137.2	Example 26	139.2
				Example 7	138.6	Example 27	136.9
Example 8	137.8	Example 28	138.5
				Example 9	136.2	Example 29	140.8
Example 10	142.1	Example 30	141.3
				Example 11	139.3	Example 31	141.5
Example 12	140.2	Example 32	139.8
				Example 13	140.5	Example 33	141.2
Example 14	140.6	Example 34	142.6
				Example 15	140.3	Example 35	143.1
Example 16	140.3	Example 36	143.2
				Example 17	140.5	Comparative example 1	100.0
Example 18	140.4	Comparative example 2	112.6
				Example 19	140.3	Comparative example 3	107.5
Example 20	140.2	/	/

As can be seen from the combination of examples 1-5 and comparative example 1 and Table 8, the relative stability measured in examples 1-5 is greater than that in comparative example 1, which demonstrates that the oil is more fully emulsified by preparing materials A and B and adding polycarboxylate and lignosulfonate, respectively, which promotes the fusion of the waste asphalt mixture and the oil, and also reduces the water content of the emulsified asphalt by the water reducing effect of polycarboxylate and lignosulfonate, promotes the demulsification in the emulsified asphalt system, and improves the early strength performance of the cold-recycling mixture.

As can be seen from the combination of example 3 and comparative example 2 and the combination of table 8, the relative stability measured in example 3 is greater than that in comparative example 2, which indicates that when polycarboxylate and lignosulfonate are absent from the emulsified asphalt system, the asphalt molecules in the asphalt microspheres relatively easily adsorb the second emulsifier on the surface of the oil microspheres, thereby affecting the emulsification and dispersion effects of the oil, being unfavorable for the fusion of the waste asphalt mixture and the oil, and reducing the early strength performance of the cold-recycling mixture.

As can be seen from the combination of example 3 and comparative example 3 and table 8, the relative stability measured in example 3 is greater than that in comparative example 3, which means that the adsorption of asphalt to the emulsifier affects the emulsification of oil, and thus the emulsification and dispersion effects of oil, which is detrimental to the fusion of the waste asphalt mixture and oil, and reduces the early strength performance of the cold-recycling mixture, after the components of the materials a and B are directly mixed.

As can be seen from the combination of examples 3 and examples 6-9 and Table 8, examples 6-8 have a higher relative stability than examples 3 and 9, demonstrating that the oil and waste asphalt mixture has a better fusion effect when the pH of the B material is in the range of 1.5-1.8, which helps to improve the early strength properties of the cold-recycling mixture.

In combination with examples 10 and 7 and with Table 8, it can be seen that when hydrochloric acid is replaced with a relatively weak acid polyphosphoric acid, the overall charge thickness in the emulsified asphalt system is reduced, and thus the stability of the asphalt microspheres is relatively poor, and thus demulsification is easier, so that the strength development of the cold-recycling mixture is faster and the early strength performance is better.

As can be seen from the combination of examples 11 to 14 and example 7 and Table 8, the asphalt material has a higher relative stability when the acid value is in the range of 4.2 to 4.4mgKOH/g. When the acid value exceeds this range, further increase of the acid value is difficult to further improve the relative stability, and therefore the acid value is preferably 4.2 to 4.4mgKOH/g.

It can be seen from the combination of examples 15-19, example 12, and Table 8 that by the incorporation of oleic acid, a natural matrix asphalt having a relatively low acid number achieves properties approaching those of a high acid number natural matrix asphalt.

As can be seen from the combination of examples 19 to 21 and Table 8, the asphalt obtained after the acidification modification of low acid value asphalt with oleic acid, tartaric acid and benzoic acid can be used as a substitute for natural high acid value asphalt.

As can be seen from the combination of examples 22-26 and example 3 and the combination of Table 8, the styrene-butadiene latex can plug capillary holes left after cement hydration, thereby increasing the mechanical properties of the cold-recycling mixture and helping to improve the early strength of the cold-recycling mixture.

It can be seen from the combination of examples 22 to 26, examples 27 to 31 and example 3 and the combination of table 8 that the carboxylated styrene-butadiene latex can shield the positive charges on the surfaces of the asphalt microspheres through the carboxyl groups in addition to exerting the similar plugging effect as the styrene-butadiene latex, thereby reducing the electrostatic repulsive force between the asphalt microspheres, promoting the aggregation of the asphalt microspheres and further improving the early strength effect of the cold-recycling mixture.

By combining examples 32-36 and example 3 and combining Table 8, it can be seen that triisopropanolamine accelerates the hydration rate of the tetracalcium aluminoferrite phase, improves the strength development rate of the Portland cement and improves the early strength performance of the cold-recycled mixture by complexing with the tetracalcium aluminoferrite in the Portland cement.

The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims (10)

1. The early-strength type cold-recycling special emulsified asphalt with the recycling capability is characterized by being prepared by mixing materials A, B and C, wherein the materials A comprise the following components in parts by weight: 98-102 parts of asphalt, 1-2 parts of first emulsifier and 40-50 parts of water; the material B is obtained by mixing oil emulsion and inorganic acid, and the oil emulsion comprises the following components in parts by weight: 10-40 parts of oil, 2-3 parts of a second emulsifier and 30-40 parts of water; the material C comprises the following components in parts by weight: 0.1-0.5 part of polycarboxylate, 0.1-1 part of lignosulfonate and 20-30 parts of water;

the preparation method of the emulsified asphalt special for early strength cold regeneration with regeneration capability comprises the following steps:

(1) Mixing a first emulsifier with water to obtain a first soap solution, and adding the first soap solution and asphalt into a colloid mill to mix to obtain a material A; mixing a second emulsifier with water to obtain a second soap solution, adding the second soap solution and oil with the temperature of 90-110 ℃ into a colloid mill, mixing to obtain an oil emulsion, and adding inorganic acid into the oil emulsion to adjust the pH value to obtain a material B;

(2) And mixing the material A and the material B, adding the material C into the obtained mixture, and stirring to obtain the early-strength cold-recycling special emulsified asphalt with the recycling capability.

2. The emulsified asphalt for early strength cold recycling with recycling ability according to claim 1, wherein the pH of the B material is 1.5-1.8.

3. The emulsified asphalt for early strength cold recycling with recycling ability according to claim 1, wherein the pKa of the inorganic acid is 1-4.

4. The emulsified asphalt for early-strength cold recycling with recycling ability according to claim 2, wherein the acid value of the asphalt is 4.2-4.4mgKOH/g.

5. The emulsified asphalt for early strength cold recycling with recycling ability as set forth in claim 4, wherein the asphalt material is obtained by mixing a matrix asphalt having an acid value of 2.7-4.0mgKOH/g with an organic acid.

6. The emulsified asphalt with regeneration capacity specially for cold regeneration according to claim 5, wherein the organic acid is at least one of oleic acid, tartaric acid and benzoic acid.

7. The emulsified asphalt with regeneration capacity special for early strength cold regeneration according to claim 1, wherein the component of the material C further comprises 1-5 parts by weight of styrene-butadiene latex.

8. The emulsified asphalt special for early strength cold recycling with recycling capability according to claim 1, wherein the first emulsifier and the second emulsifier are both cationic emulsifiers, and the component of the material C further comprises 1-5 parts by weight of carboxylated styrene-butadiene latex.

9. The emulsified asphalt special for early strength cold recycling with recycling capability according to claim 1, wherein the component of the material C further comprises 0.6-1.0 parts by weight of triisopropanolamine.

10. The method for preparing the emulsified asphalt special for early-strength cold regeneration with regeneration capability according to any one of claims 1 to 9, which is characterized by comprising the following steps:

(1) Mixing a first emulsifier with water to obtain a first soap solution, and adding the first soap solution and asphalt into a colloid mill to mix to obtain a material A; mixing a second emulsifier with water to obtain a second soap solution, adding the second soap solution and oil with the temperature of 90-110 ℃ into a colloid mill, mixing to obtain an oil emulsion, and adding inorganic acid into the oil emulsion to adjust the pH value to obtain a material B;

(2) Mixing the material A and the material B, adding the material C according to any one of claims 1-9 into the obtained mixture, and stirring to obtain the emulsified asphalt special for early-strength cold regeneration with regeneration capability.