CN102382414A - Resin modified asphalt and preparation method thereof - Google Patents

Abstract

The invention relates to resin modified asphalt and a preparation method of the resin modified asphalt, which belong to the technical field of construction. The resin modified asphalt includes following components, by weight, 10-15% of arene, 3-10% of modifier, 1-5% of reinforcing agent, 3-10% of fluxing agent, 30-50% of resin and 10-30% of heavy traffic paving asphalt. The method for preparation of the modified asphalt includes steps of firstly, heating the arene to 60-70 DEG C, secondly, adding the modifier into the arene and stirring the obtained liquid, and adding the reinforcing agent and the fluxing agent before heating the obtained mixed solution to 60-70 DEG C, and thirdly, heating the heavy traffic paving asphalt to 100-170 DEG C, adding the resin and the mixed solution obtained at the step two, stirring to form uniform mixture, cooling the mixture to the normal temperature and then resin modified asphalt is achieved. The resin modified asphalt far surpasses the national standard in terms of performance, and utilization range of emulsified asphalt is greatly expanded while utilization effect of the emulsified asphalt is greatly improved.

Description

Resin modified pitch and preparation method thereof

Technical field

The present invention relates to pitch of a kind of technical field of buildings and preparation method thereof, be specifically related to a kind of resin modified pitch and preparation method thereof.

Background technology

Highway pavement adopts pitch or cement as the road surface gelatinous material in a large number, and under effects such as sunlight, wind and water, these gelatinous materials can wear out; Simultaneously because material inherent characteristic; Cement is irresistible to expand with heat and contract with cold, the irresistible pressure big and that concentrate of pitch, and this greatly reduces the work-ing life of highway and has improved the routine maintenance cost; Especially steel bridge in use will stand the abominable tests of using such as heavy traffic, heavy-duty vehicle are many; Adopt plain asphalt or cement to lay the steel bridge bridge floor and be difficult to meet the demands, therefore, be necessary plain asphalt is done further improvement to satisfy actual needs.

Summary of the invention

First purpose of the present invention is to provide a kind of resin modified pitch, and its component and mass percent are: aromatic hydrocarbons 10-15%, properties-correcting agent 3-10%, toughener 1-5%, fusing assistant 3-10%, resin 30-50%, heavy traffic paving asphalt 10-30%.

Preferably, said properties-correcting agent is one or more the mixing among SEBS, SBR, SIS or the PE.

Preferably, said toughener is one or more the mixing in mercaptan, the thioether.

Preferably, said fusing assistant is a kind of or its mixing in calcium chloride, the sodium-chlor.

Preferably, said resin is one or more mixtures in C5, C9, the C5-C9 petroleum resin.

Preferably, in the step 2, the temperature of said heating is 65 ℃.

The invention still further relates to the aforementioned resin modified asphalt preparation method, comprise the steps:

1, aromatic hydrocarbons is heated to 60-70 ℃;

2, properties-correcting agent is joined in the aromatic hydrocarbons, stir liquid, add toughener, fusing assistant then, the gained mixing solutions is heated to 60-70 ℃;

3, heavy traffic paving asphalt is heated to 100-170 ℃, adds resin and step 2 gained mixing solutions, stir and form uniform mixture, be cooled to normal temperature, promptly get resin modified pitch.

The present invention has following beneficial effect: resin modified pitch of the present invention has good physicals: 5 ℃ of ductility＞25 centimetre, softening temperature＞70 ℃, recovery of elasticity＞75%; After aging, 5 ℃ of ductility＞30 centimetre, softening temperature＞70 degree, recovery of elasticity＞75%.The aromatic hydrocarbons that contains in the resin modified pitch of the present invention can form stable mixture with properties-correcting agent, resin and pitch, and resin group and pitch group are able to bridge joint simultaneously; Resin modified bituminous performance of the present invention is considerably beyond national standard, expanded the use range of emulsified bitumen greatly and improved the result of use of emulsified bitumen.

Embodiment

Below in conjunction with specific embodiment, the present invention is described further.Should be understood that following examples only are used to the present invention is described but not are used to limit scope of the present invention.As not having specified otherwise, the per-cent in following examples is weight percentage.

The mechanical means information of using in following examples is following:

The mechanical means information of using in following examples is following: colloidal mill is the JM-L50 model of Wenzhou, Zhejiang colloidal mill factory; Stirrer is Wujin, Changzhou laboratory stirrer of machine works from all directions; Temperature control system is that TM is used in the laboratory; Metering system is the Shanghai 9903-3 of a precision instrumentation company type;

Heavy traffic paving asphalt in following examples all meets JTG F40-2004 standard-required.

Embodiment 1

The resin modified bituminous component and the mass percent of present embodiment are: aromatic hydrocarbons 10%, and SEBS 3%, mercaptan 4%, calcium chloride 3%, C5 50%, heavy traffic paving asphalt 30%.

Said resin modified bituminous preparation method comprises the steps:

1, aromatic hydrocarbons is heated to 60 ℃;

2, SEBS is joined in the aromatic hydrocarbons, be stirred to liquid, add mercaptan, calcium chloride then, the gained mixing solutions is heated to 65 ℃;

3, heavy traffic paving asphalt is heated to 100 ℃, adds C5 resin and step 2 gained mixing solutions, stir and form uniform mixture, be cooled to normal temperature, promptly get resin modified pitch.

Embodiment 2

The resin modified bituminous component and the mass percent of present embodiment are: aromatic hydrocarbons 15%, and SIS 10%, thioether 5%, sodium-chlor 10%, C9 50%, heavy traffic paving asphalt 10%.

Said resin modified bituminous preparation method comprises the steps:

1, aromatic hydrocarbons is heated to 65 ℃;

2, SIS is joined in the aromatic hydrocarbons, be stirred to liquid, add thioether, sodium-chlor then, the gained mixing solutions is heated to 65 ℃;

3, heavy traffic paving asphalt is heated to 120 ℃, adds C9 resin and step 2 gained mixing solutions, stir and form uniform mixture, be cooled to normal temperature, promptly get resin modified pitch.

Embodiment 3

The resin modified bituminous component and the mass percent of present embodiment are: aromatic hydrocarbons 14%, and PE 5%, mercaptan 1%, sodium-chlor 9%, C5 45%, heavy traffic paving asphalt 26%.

Said resin modified bituminous preparation method comprises the steps:

1, aromatic hydrocarbons is heated to 70 ℃;

2, PE is joined in the aromatic hydrocarbons, be stirred to liquid, add mercaptan, sodium-chlor then, the gained mixing solutions is heated to 70 ℃;

3, heavy traffic paving asphalt is heated to 150 ℃, adds C5 resin and step 2 gained mixing solutions, stir and form uniform mixture, be cooled to normal temperature, promptly get resin modified pitch.

Embodiment 4

The resin modified bituminous component and the mass percent of present embodiment are: aromatic hydrocarbons 15%, properties-correcting agent 10%, toughener 5%, fusing assistant 10%, resin 30%, heavy traffic paving asphalt 30%;

Wherein, properties-correcting agent is that SBR and SIS are that mixing in 1: 1 gets by mass ratio;

Toughener is that mercaptan and thioether are that mixing in 1: 1 gets by mass ratio;

Fusing assistant is that calcium chloride and sodium-chlor are that mixing in 1: 1.5 gets by mass ratio;

Resin is that C5 and C9 are that mixing in 1: 3 gets by mass ratio.

Said resin modified bituminous preparation method comprises the steps:

1, aromatic hydrocarbons is heated to 60 ℃;

2, properties-correcting agent is joined in the aromatic hydrocarbons, be stirred to liquid, add toughener, fusing assistant then, the gained mixing solutions is heated to 60 ℃;

3, heavy traffic paving asphalt is heated to 170 ℃, adds resin and step 2 gained mixing solutions, stir and form uniform mixture, be cooled to normal temperature, promptly get resin modified pitch.

Embodiment 5

Test detects; By the People's Republic of China's industry standard---T0605-1993, T0606-2000, T0662-2000, T0616-1993 standard among highway engineering pitch and the asphalt experiment rules JTJ052-2000 detect; Detected result is seen table 1; Can know that by table 1 performance of star-like remodeling emulsified bitumen of the present invention is considerably beyond national standard, expand the use range of emulsified bitumen greatly and improved the result of use of emulsified bitumen.

Table 1

Test subject	5 ℃ of ductilities	Softening temperature	Recovery of elasticity	Adhesivity
					Embodiment 1	24 centimetres	54℃	77％	5 grades
Embodiment 2	25 centimetres	55℃	76％	5 grades
					Embodiment 3	25 centimetres	54℃	77％	5 grades
Embodiment 3	26 centimetres	55℃	78％	5 grades

Claims (7)

1. a resin modified pitch is characterized in that, its component and mass percent are: aromatic hydrocarbons 10-15%, properties-correcting agent 3-10%, toughener 1-5%, fusing assistant 3-10%, resin 30-50%, heavy traffic paving asphalt 10-30%.

2. resin modified pitch as claimed in claim 1 is characterized in that, said properties-correcting agent is one or more the mixing among SEBS, SBR, SIS or the PE.

3. resin modified pitch as claimed in claim 1 is characterized in that, said toughener is one or more the mixing in mercaptan, the thioether.

4. resin modified pitch as claimed in claim 1 is characterized in that, said fusing assistant is calcium chloride, sodium-chlor or its mixing.

5. resin modified pitch as claimed in claim 1 is characterized in that, said resin is one or more mixtures in C5, C9, the C5-C9 petroleum resin.

6. one kind prepares the described resin modified bituminous of claim 1 method, it is characterized in that, comprises the steps:

1, aromatic hydrocarbons is heated to 60-70 ℃;

2, properties-correcting agent is joined in the aromatic hydrocarbons, stir liquid, add toughener, fusing assistant then, the gained mixing solutions is heated to 60-70 ℃;

3, heavy traffic paving asphalt is heated to 100-170 ℃, adds resin and step 2 gained mixing solutions, stir and form uniform mixture, be cooled to normal temperature, promptly get resin modified pitch.

7. preparation method as claimed in claim 6 is characterized in that, in the step 2, the temperature of said heating is 65 ℃.