阅读说明：本技术 一种高模量沥青胶结料及其制备方法和应用 (A kind of high-modulus asphalt cementitious matter and its preparation method and application ) 是由 梁明 辛雪 姚占勇 蒋红光 张吉哲 于 2019-08-02 设计创作，主要内容包括：本发明涉及一种高模量沥青胶结料及其制备方法和应用,括脱油硬质沥青、渣蜡、废旧橡塑合金改性剂、SBS改性剂和稳定剂。废旧橡塑合金改性剂由废旧胶粉和废旧塑料组成。硬质沥青60-90份、渣蜡20-40份、废旧橡塑合金改性剂10-30份、SBS改性剂1-5份和稳定剂0.2-2.0份；用于沥青路面中下面层以防止高温车辙和低温开裂。提高了炼油过程副产品及废旧物的利用价值,具有较大的经济优势和重要现实意义。(The present invention relates to a kind of high-modulus asphalt cementitious matters and its preparation method and application, include de-oiling hard grades of bitumen, slag wax, the agent of waste and old rubber alloy modification, SBS modifier and stabilizer.Waste and old rubber alloy modification agent is made of waste rubber powder and waste plastic.60-90 parts of hard grades of bitumen, 20-40 parts of slag wax, 10-30 parts of waste and old rubber alloy modification agent, 1-5 parts of SBS modifier and 0.2-2.0 parts of stabilizer；For cutting optimal in bituminous pavement to prevent hot car rut and cold cracking.The utility value of oil refining process byproduct and junk is improved, there is biggish economic advantages and important realistic meaning.)

1. a kind of high-modulus asphalt cementitious matter, it is characterised in that: including de-oiling hard grades of bitumen, slag wax, waste and old rubber alloy modification Agent, SBS modifier and stabilizer.

2. high-modulus asphalt cementitious matter according to claim 1, it is characterised in that: waste and old rubber alloy modification agent is by waste and old Rubber powder and waste plastic composition.

3. high-modulus asphalt cementitious matter according to claim 1, it is characterised in that: the de-oiling hard grades of bitumen including mass parts 60-90 parts, 20-40 parts of slag wax, 10-30 parts of waste and old rubber alloy modification agent, 1-5 parts of SBS modifier and stabilizer 0.2-2.0 Part；

Preferably, de-oiling hard grades of bitumen 65-75 parts, 25-35 parts of slag wax, 15-25 parts of waste and old rubber alloy modification agent, SBS modification 4-5 parts and stabilizer 0.5-1.0 parts of agent.

4. high-modulus asphalt cementitious matter according to claim 1 or 3, it is characterised in that: the agent of waste and old rubber alloy modification by Waste rubber powder and waste plastic composition, waste rubber powder: the mass ratio of waste plastic is 3:7-7:3；

Preferably, waste rubber powder: the mass ratio of waste plastic is 3:4-4:3；

Preferably, waste rubber powder mesh number is -110 mesh of 20 mesh.

5. high-modulus asphalt cementitious matter according to claim 1, it is characterised in that: de-oiling hard grades of bitumen is propane de-oiling drip The combination of one or more of blueness, butane de-oiled asphalt and pentane de-oiled asphalt.

6. high-modulus asphalt cementitious matter according to claim 1, it is characterised in that: saturation point and virtue in de-oiling hard grades of bitumen Perfume (or spice) point content answers > 20%.

7. high-modulus asphalt cementitious matter according to claim 1, it is characterised in that: slag wax is to refer to that fusing point is 90 DEG C -110 DEG C, the liquid wax containing solid impurities such as the catalyst that partial size is 20-200um.

8. high-modulus asphalt cementitious matter according to claim 1, it is characterised in that: waste plastic is to recycle and be crushed The waste plastic packaging bag of screening, main component are polyethylene.

9. a kind of preparation method of high-modulus asphalt cementitious matter, it is characterised in that: specific steps are as follows:

Waste rubber powder and waste plastic are mixed, extrusion processing is carried out, is granulated, is dried to obtain waste and old rubber alloy modification agent Grain；

Slag wax is added after the heating of de-oiling hard grades of bitumen, obtains mixture A, mixture A sequentially adds SBS under heating conditions and changes Property agent, waste and old rubber alloy modification agent particle, stabilizer obtain high-modulus asphalt cementitious matter；

Preferably, the temperature that waste rubber powder and waste plastic carry out squeezing out processing after mixing is 160-220 DEG C；Further preferably 180-220℃；

Preferably, the method for squeezing out processing is carried out after waste rubber powder and waste plastic mixing are as follows: after mixture squeezes out, into cooling It is straightened, is granulated in water, circulation obtains squeezing out the material after processing three times；

Preferably, it is mixed after de-oiling hard grades of bitumen is heated to 140-160 DEG C with slag wax.Heating de-oiling hard grades of bitumen makes de-oiling hard Pitch has good mobility；

Preferably, the temperature of mixture A heating is 150-180 DEG C.

10. application of any high-modulus asphalt cementitious matter of claim 1-8 in pavement structure.

Technical field

The invention belongs to field of engineering technology and technical field of petrochemical industry, and in particular to a kind of high-modulus asphalt cementitious matter And its preparation method and application.

Background technique

Disclosing the information of the background technology part, it is only intended to increase understanding of the overall background of the invention, without certainty It is considered as recognizing or implying in any form that information composition has become existing skill well known to persons skilled in the art Art.

" standard specification for construction and acceptance of highway asphalt pavement " shows that serious vehicle occur in south China, the north even the Northeast Rut is mainly since the Asphalt Penetration of selection is bigger than normal, caused by modulus is low.In recent years, in asphalt pavement structure design below Layer gradually begins to use high-modulus asphalt, to increase the ability of bituminous pavement track resistant to high temperatures and resistance to deformation.High-modulus asphalt Generate when by fixed stress load needs stress to be loaded big when should become smaller or generate fixed strain, thus pitch is with anti- The strong feature of deformability；And high-modulus asphalt and gather materials and have good adhesive property, it can effectively improve semi-rigid or flexible The whole load-bearing capacity on road surface, suitable for the pavement structure under the conditions of warm area or Heavy Traffic.Therefore, high-modulus asphalt It develops and has great importance with application for the generating period for improving road surface entirety rutting resistance, reducing pavement disease.

As one of mink cell focus process refining process process, solvent deasphalting techniques are with the weight such as decompression residuum Matter oil is raw material, is extracted using light hydrocarbons such as C3, C4 as solvent, obtains extract (deasphalted oil) and extract remainder (de-oiled asphalt).The resin and asphalt content wherein contained in de-oiled asphalt is up to 70%, and asphalt content is close to 20%.It is de- The component feature of oily hard grades of bitumen determines its softening point and viscosity with higher, but low temperature extensibility, elastic recovery, Toughness is very poor, cannot be used directly in road engineering.

Modifying agent currently used for asphalt modification be broadly divided into thermoplastic elastomer (TPE) class (such as SBS), rubber (such as SBR), Resinae (such as EVA, PE).In recent years, shoddy is also gradually available in the modification of pitch, to improve the cryogenic property of pitch, But due to poor with the compatibility of pitch, its use in pitch is greatly constrained.

Has more patent report in terms of to high-modulus asphalt and hard grades of bitumen performance improvement.Such as patent CN104650602A discloses a kind of advanced road hard grades of bitumen and preparation method thereof, utilizes de-oiled asphalt, plug slurry oil, takes out The polymer modifiers such as fuel-displaced and SBS, SBR preparation needle penetration is the advanced road hard petroleum within the scope of 10-60 1/10mm Pitch.Patent CN108384253A with after paraffinic base crude oil decompression residuum hard de-oiled asphalt, plug remaining catalytic slurry, change Property agent be raw material, by carry out under certain condition simply reconcile be made building asphalt.Patent CN105400220A is related to using In a kind of high-performance bituminous cements of asphalt road surface construction, specifically a kind of high-modulus for rubber-asphalt mixture Rubber asphalt and preparation method thereof.The material composition group of the high-modulus rubber asphalt are as follows: by road waste rubber tyre powder and agricultural waste and old Plastic film is spiked into No. 70 matrix pitches, bitumen, in aromatic naphtha, improves high-modulus rubber asphalt to a certain extent Pavement performance.Patent CN103102708A is by adding SBS and high-modulus asphalt modifying agent in matrix pitch to prepare Gao Mo Measure pitch.SBS by being spiked into the mixture of high grade pitch and low grade pitch to prepare by patent CN103834184A High-modulus asphalt.The inventors discovered that the above patent or by using de-oiled asphalt as raw material add rich in fragrance point component and Polymer modifiers is prepared for high-modulus asphalt by adding the method for polymer modifiers using matrix pitch as raw material, But it need from raw material cost performance, high temperature performance etc. further perfect.

Summary of the invention

For above-mentioned problems of the prior art, it is an object of the present invention to provide a kind of high-modulus asphalt is cementing Material and its preparation method and application.The present invention is basic component with de-oiling hard grades of bitumen (DOA), and it is abundant to mix linear paraffin component again Slag wax, and efficiently use waste old and waste plastic prepares high-modulus asphalt cementitious matter.This high-modulus asphalt cementitious matter Modulus and intensity and excellent high temperature performance, modest viscosity with higher, can be used in bituminous pavement cutting optimal with Prevent high temperature track and cold cracking.High-modulus asphalt cementitious matter provided by the invention simultaneously and preparation method thereof, sufficiently benefit Prepare high-modulus asphalt with DOA, waste rubber powder, waste plastic and slag wax are raw material, improve oil refining process byproduct and The utility value of junk realizes the dual mesh of DOA, the effective use of junk and production high added value high-modulus asphalt , there is biggish economic advantages and important realistic meaning.

In order to solve the above technical problems, the technical solution of the present invention is as follows:

In a first aspect, a kind of high-modulus asphalt cementitious matter, including de-oiling hard grades of bitumen (DOA), slag wax, waste and old rubber alloy Modifying agent, SBS modifier and stabilizer.

High-modulus asphalt cementitious matter modulus with higher and intensity and excellent high temperature performance, modest viscosity can With for cutting optimal in bituminous pavement to prevent hot car rut and cold cracking.Bituminous cements of the invention is with higher dynamic State modulus of shearing, that is to say, that there is enough resistance capacity to deformation under shear stress.The present invention utilizes de-oiling hard grades of bitumen (DOA) with slag wax, the agent of waste and old rubber alloy modification, SBS modifier and stabilizer compounded technology be prepared a kind of intensity it is high, The bituminous cements that softening point is high, dynamic shear modulus is high.Existing anti-rutting asphalt cementitious matter is all by ordinary road The anti-rut agent of PE class is added in pitch to improve rutting resistance, this height for improving plain asphalt only by additive Warm nature can be limited, and road surface is caused track or slight crack occur.The present invention makes full use of DOA excellent on the basis of existing technology High-temperature behavior and rubber and plastic alloy advantage, DOA can significantly improve the high-temperature behavior of pitch as the matrix of bituminous cements And anti-shear ability.

In some embodiments, the agent of waste and old rubber alloy modification is made of waste rubber powder and waste plastic.

Waste and old rubber alloy modification agent of the present invention can give full play to waste rubber powder and waste plastic respectively for The improvement result of pitch cryogenic property and high-temperature behavior；Using the characteristics of solubility parameter is closer between rubber powder and plastics, The two is subjected to melt blending using certain technology mode, by spreading in advance, osmosis, improves waste rubber powder and pitch Modified high-temperature behavior is insufficient, while improving the compatibility of waste plastic and pitch, is mutually improved in the way of mutual supplement with each other's advantages Using effective modifying agent as DOA.

In some embodiments, high-modulus asphalt cementitious matter, 60-90 parts of de-oiling hard grades of bitumen (DOA) including mass parts, 20-40 parts of slag wax, 10-30 parts of waste and old rubber alloy modification agent, 1-5 parts of SBS modifier and 0.2-2.0 parts of stabilizer；Preferably 65-75 parts of de-oiling hard grades of bitumen, 25-35 parts of slag wax, 15-25 parts of waste and old rubber alloy modification agent, 4-5 parts of SBS modifier and steady Determine 0.5-1.0 parts of agent.

Waste and old rubber alloy preferably can improve and improve as modifying agent, SBS modifier within the scope of aforementioned proportion The high and low temperature resistance of matrix components de-oiling hard grades of bitumen.

In some embodiments, waste rubber powder: the mass ratio of waste plastic is 3:7-7:3；Preferably 3:4-4:3 is above-mentioned The performance characteristics of waste rubber powder and waste plastic can be integrated in range, any go beyond the scope influences bulk modified dose of property Energy.

In some embodiments, waste rubber powder mesh number is -110 mesh of 20 mesh, preferably 20 mesh, 30 mesh, 40 mesh, 50 mesh, 60 Mesh, 70 mesh, 80 mesh, 90 mesh, 100 mesh, 110 mesh.

In some embodiments, de-oiling hard grades of bitumen (DOA) is propane de-oiled asphalt, butane de-oiled asphalt and pentane de-oiling The combination of one or more of pitch.

Preferably, saturation point and fragrance point content answer > 20% in de-oiling hard grades of bitumen (DOA).

In some embodiments, slag wax is to refer to that fusing point is 90 DEG C -110 DEG C, the catalyst for being 20-200um containing partial size The liquid wax of equal solid impurities.

The present invention selects higher melting-point slag wax, mixes with basic components de-oiling hard grades of bitumen, with de-oiling hard grades of bitumen group The compatibility divided is more preferable, keeps the binding force of de-oiling hard grades of bitumen stronger, high temperature performance is more preferable.

In some embodiments, waste plastic is the waste plastic packaging bag for recycling and being crushed screening, main component For polyethylene.

In some embodiments, SBS modifier molecular structure is linear or star-like, and it is 20/80-50/ that block ratio, which is to S/B, 50, molecular weight 70000-230000.

In some embodiments, stabilizer is sulfur type structure, preferably one of elemental sulfur, S40, S60 or S90 or more Kind.

Second aspect, a kind of preparation method of high-modulus asphalt cementitious matter, specific steps are as follows:

Waste rubber powder and waste plastic are mixed, extrusion processing is carried out, is granulated, is dried to obtain waste and old rubber alloy modification agent Particle；

Slag wax is added after the heating of de-oiling hard grades of bitumen, obtains mixture A, mixture A is sequentially added under heating conditions SBS modifier, waste and old rubber alloy modification agent particle, stabilizer obtain high-modulus asphalt cementitious matter.

In some embodiments, the temperature that waste rubber powder and waste plastic carry out squeezing out processing after mixing is 160-220 DEG C； Preferably 180-220 DEG C.

Existing waste plastic material squeeze out, and are high temperature, the process entirely squeezed out in the application by the temperature setting of head In be higher than extrusion temperature in the prior art, keep waste rubber powder and waste plastic warm by the temperature setting of extruder More preferably, uniform and stable modifying agent is formed.

In some embodiments, the method for squeezing out processing is carried out after waste rubber powder and waste plastic mixing are as follows: mixture squeezes It after out, into being straightened in cooling water, is granulated, circulation obtains squeezing out the material after processing three times.

In some embodiments, it is mixed after de-oiling hard grades of bitumen is heated to 140-160 DEG C with slag wax.Heat the drip of de-oiling hard Blueness makes de-oiling hard grades of bitumen have good mobility.

In some embodiments, the temperature of mixture A heating is 150-180 DEG C.

A kind of above-mentioned high-modulus asphalt cementitious matter surface layer, the application in asphalt surface course Rut resistance layer in bituminous pavement.

Beneficial effects of the present invention:

(1) high-modulus asphalt cementitious matter provided by the invention, modulus and intensity with higher and excellent high/low temperature Performance, modest viscosity can be used in bituminous pavement cutting optimal to prevent hot car rut and cold cracking.

(2) high-modulus asphalt cementitious matter provided by the invention takes full advantage of DOA, waste rubber powder, waste plastic and slag wax For raw material, used recycling polymer is from a wealth of sources, cheap, improves the utilization of oil refining process byproduct and junk Value realizes the dual purpose of DOA, the effective use of junk and production high added value high-modulus asphalt, has biggish Economic advantages and important realistic meaning.

(3) waste and old rubber alloy modification agent of the present invention can give full play to waste rubber powder and waste plastic is right respectively In the improvement result of pitch cryogenic property and high-temperature behavior, by spreading in advance, osmosis, improves waste rubber powder and change with pitch Property after high-temperature behavior it is insufficient, while improving the compatibility of waste plastic and pitch, mutually improved in the way of mutual supplement with each other's advantages with Effective modifying agent as DOA.

Specific embodiment

It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention The identical meanings of understanding.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.Below with reference to embodiment to this hair Bright further explanation