CN112574583A - High-modulus asphalt material with excellent durability and preparation method thereof - Google Patents
High-modulus asphalt material with excellent durability and preparation method thereof Download PDFInfo
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Abstract
A high modulus asphalt material with excellent durability and a preparation method thereof are disclosed, wherein the high modulus asphalt material mainly comprises the following components in parts by mass: 50-65 parts of low-grade asphalt, 15-25 parts of high-modulus additive, 5-10 parts of coarse aggregate, 5-10 parts of fine aggregate, 3-5 parts of mineral powder, 1-3 parts of antioxidant, 1-3 parts of anti-ultraviolet agent and 0.3-0.5 part of cross-linking agent; the high modulus additive mainly comprises the following components in parts by weight: styrene-butadiene-styrene block copolymer, high-density polyethylene, polyethylene PE, low-density polyethylene, organic silicon modified hydroxyl-terminated hyperbranched polyester resin, polypropylene and linear low-density polyethylene. The high-modulus asphalt material with excellent durability and the preparation method thereof have the advantages of reasonable formula setting, simple preparation process, excellent durability, improvement of the modulus of the asphalt material, improvement of the high-temperature deformation resistance of an asphalt pavement, improvement of the fatigue performance of the asphalt material and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of asphalt materials, and particularly relates to a high-modulus asphalt material with excellent durability and a preparation method thereof.
Background
With the continuous development of road construction in the world, asphalt becomes one of the most widely used road pavement materials in the world, and the advantages thereof are as follows: the asphalt pavement has better flatness, and the automobile runs stably and comfortably on the pavement; the asphalt pavement has certain plasticity and viscoelasticity, can bear enough vehicle load and also has good relaxation performance; the asphalt pavement and the automobile tire have better adhesive force; the asphalt pavement has higher damping and noise reduction effects; the asphalt pavement can be recycled.
In recent years, the road construction of China is rapidly developed and is already a world highway kingdom, and the highway of China is famous in the world and is in continuous improvement on the road construction requirement and higher on the asphalt performance along with the rapid development of the country. Along with the increasing of road traffic volume, the load pressure born by the road surface is also increased more and more, so that the rutting phenomenon can occur in a plurality of expressways too early, the road surface is deformed, and the service life of the road is shortened.
In addition, due to the composition and structure of asphalt, the asphalt has poor temperature sensitivity, so that the asphalt pavement is easy to soften at high temperature and harden and crack at low temperature. Asphalt is a high polymer material, the anti-aging effect is not ideal, when the asphalt is stored and constructed, the asphalt is aged by thermal oxidation under the combined action of high temperature and oxygen, and after the road surface is communicated with a vehicle, the asphalt is also aged by ultraviolet light of different degrees, and the durability of the asphalt material is greatly reduced along with slow oxidation reaction. Therefore, under the heavy-load traffic environment, in order to ensure that the asphalt pavement has better high-temperature deformation resistance and fatigue resistance, the service life of the asphalt pavement is prolonged. Therefore, it is necessary to develop a high modulus asphalt material with excellent durability and a preparation method thereof, which can improve the high temperature deformation resistance of the asphalt pavement, improve the fatigue performance of the asphalt material, prolong the service life of the pavement and improve the service quality of the pavement by increasing the modulus of the asphalt material and reducing the strain of the pavement under the repeated action of vehicle load.
Chinese patent application No. CN201310367629.5 discloses a rubber powder epoxy resin asphalt material and a preparation method and a use method thereof, wherein a rubber powder material is adopted, so that the unit price of the epoxy resin asphalt material can be reduced, the low-temperature flexibility of the epoxy resin asphalt material can be improved, the modulus of the asphalt material is not improved, the strain of a road surface under the repeated action of vehicle load is reduced, the high-temperature deformation resistance of the asphalt road surface is improved, the fatigue performance of the asphalt material is improved, and the service life of the road surface is prolonged.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide the high-modulus asphalt material with excellent durability and the preparation method thereof, the formula design is reasonable, the compatibility of all components is good, a good synergistic effect is achieved, the asphalt material has excellent durability, the modulus of the asphalt material is improved, the high-temperature deformation resistance of an asphalt pavement is improved, the fatigue performance of the asphalt material is improved, the service life of the pavement is prolonged, and the application prospect is wide.
The purpose of the invention is realized by the following technical scheme:
a high modulus bituminous material with excellent durability, which mainly comprises the following components in parts by mass: 50-65 parts of low-grade asphalt, 15-25 parts of high-modulus additive, 5-10 parts of coarse aggregate, 5-10 parts of fine aggregate, 3-5 parts of mineral powder, 1-3 parts of antioxidant, 1-3 parts of anti-ultraviolet agent and 0.3-0.5 part of cross-linking agent; the high modulus additive mainly comprises the following components in parts by weight: 15-18 parts of styrene-butadiene-styrene block copolymer, 10-16 parts of high-density polyethylene, 10-12 parts of polyethylene PE, 5-10 parts of low-density polyethylene, 5-10 parts of organosilicon modified hydroxyl-terminated hyperbranched polyester resin, 5-10 parts of polypropylene and 5-10 parts of linear low-density polyethylene.
Further, the high modulus asphalt material with excellent durability is obtained by mixing the low grade asphalt with No. 15 hard asphalt; the coarse aggregate and the fine aggregate are both limestone; the antioxidant is a mixture of Mg-Al and Irgafos 1010.
Further, the high modulus asphalt material with excellent durability is prepared by mixing one or more of the ultraviolet resistant agents UV531, UV326 and carbon black; the cross-linking agent is one or a mixture of methyl orthosilicate, aluminum isopropoxide and titanium acetylacetonate.
The high-modulus asphalt material with excellent durability has the advantages of reasonable formula design, good compatibility of each component, good synergistic effect, excellent durability, improvement of the modulus of the asphalt material, improvement of the high-temperature anti-deformation capability of an asphalt pavement, improvement of the fatigue performance of the asphalt material, prolongation of the service life of the pavement and wide application prospect.
The invention adopts No. 15 hard asphalt, the No. 15 hard asphalt is a high modulus asphalt matrix, and the high modulus additive is added into the No. 15 hard asphalt to further improve the modulus, and improve the water damage resistance, the high temperature resistance, the low temperature crack resistance and the pavement durability of the asphalt material.
Particularly, the organic silicon modified hydroxyl-terminated hyperbranched polyester resin is introduced into the high-modulus additive, and the flexible organic silicon chain segment is embedded into the hyperbranched polyester, so that the heat resistance, flexibility and cold and heat change resistance of the polyester can be improved, and the asphalt material can resist high and low temperatures when used as a road surface and cannot crack under the high and low temperature alternating condition; the coarse aggregate and the fine aggregate are limestone, so that the strength is high, the wear resistance and the corner angle are good, the coarse aggregate plays a skeleton supporting role in the composition of the asphalt material, the fine aggregate is mainly used for filling skeleton gaps of the coarse aggregate in the asphalt material, and the addition of the mineral powder obviously improves the adhesion and the water resistance of the No. 15 hard asphalt, the high-modulus additive, the coarse aggregate and the fine aggregate.
Through the compound modification of the anti-ultraviolet agent and the antioxidant, the synergistic effect is good, the photo-oxidative aging and the thermo-oxidative aging of the asphalt material can be improved simultaneously, and the asphalt material has more excellent anti-aging performance; the cross-linking agent can convert linear or slightly branched chain type macromolecules in the asphalt material into a three-dimensional network structure, so that the performances of the combination among the components of the asphalt material, such as strength, heat resistance, wear resistance, solvent resistance and the like, are improved.
Further, in the high modulus asphalt material with excellent durability, the average particle size of the coarse aggregate is 4-6 mm; the average grain diameter of the fine aggregate is 1-4 mm; the average grain diameter of the mineral powder is 0.15-0.30 mm.
The invention also relates to a preparation method of the high modulus asphalt material with excellent durability, which comprises the following steps:
(1) preparing styrene-butadiene-styrene block copolymer, high-density polyethylene, polyethylene PE, low-density polyethylene, organic silicon modified hydroxyl-terminated hyperbranched polyester resin, polypropylene and linear low-density polyethylene according to the formula, uniformly mixing the styrene-butadiene-styrene block copolymer, the high-density polyethylene, the polyethylene PE, the low-density polyethylene, the organic silicon modified hydroxyl-terminated hyperbranched polyester resin, the polypropylene and the linear low-density polyethylene, heating and melting the mixture, extruding the mixture by a screw extruder, cooling the mixture at normal temperature, and cutting the mixture into particles to prepare the high-modulus additive;
(2) preparing low-grade asphalt, high-modulus additive, coarse aggregate, fine aggregate, mineral powder, antioxidant, anti-ultraviolet agent and crosslinking agent according to the formula;
(3) uniformly mixing the coarse aggregate, the fine aggregate and the mineral powder to obtain mixed powder; adding the high-modulus additive into the mixed powder for heating and stirring, wherein the stirring temperature is 190-210 ℃, the stirring frequency is 1000-1500r/min, and the stirring time is 2-5min, so as to obtain a mixture; meanwhile, heating the low-grade asphalt, adding the mixture into the low-grade asphalt in the heating process, and shearing for 10-15min at the rotating speed of 400-600r/min by using a high-speed shearing machine to obtain an asphalt base material;
(4) keeping the temperature of the asphalt base material at 170-180 ℃, adding the antioxidant, the anti-ultraviolet agent and the cross-linking agent, and shearing and stirring for 30-50min in a high-speed shearing machine to obtain the high-modulus asphalt material.
Further, in the above method for preparing a high modulus asphalt material with excellent durability, the temperature for heating and melting in step (1) is 200-220 ℃; the heating temperature of the low-grade asphalt in the step (3) is 160-180 ℃.
Further, in the above method for preparing a high modulus asphalt material with excellent durability, after the antioxidant, the anti-ultraviolet agent and the cross-linking agent are added in the step (5), the rotating speed of the high speed shearing machine is 5000-.
Compared with the prior art, the invention has the following beneficial effects:
(1) the high-modulus asphalt material with excellent durability disclosed by the invention is reasonable in formula design, good in compatibility of each component, good in synergistic effect, excellent in durability, wide in application prospect, and the modulus of the asphalt material is improved, the high-temperature anti-deformation capability of an asphalt pavement is improved, the fatigue performance of the asphalt material is improved, and the service life of the pavement is prolonged;
(2) the preparation method of the high-modulus asphalt material with excellent durability, disclosed by the invention, has the advantages of reasonable arrangement of preparation steps, simple and controllable preparation steps, high flexibility, capability of being used for large-scale production, better economy and wide application prospect.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention are clearly and completely described in the embodiments with reference to specific experimental data, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following example provides a high modulus bituminous material with excellent durability, which consists essentially of, in parts by mass: 50-65 parts of low-grade asphalt, 15-25 parts of high-modulus additive, 5-10 parts of coarse aggregate, 5-10 parts of fine aggregate, 3-5 parts of mineral powder, 1-3 parts of antioxidant, 1-3 parts of anti-ultraviolet agent and 0.3-0.5 part of cross-linking agent; the high modulus additive mainly comprises the following components in parts by weight: 15-18 parts of styrene-butadiene-styrene block copolymer, 10-16 parts of high-density polyethylene, 10-12 parts of polyethylene PE, 5-10 parts of low-density polyethylene, 5-10 parts of organosilicon modified hydroxyl-terminated hyperbranched polyester resin, 5-10 parts of polypropylene and 5-10 parts of linear low-density polyethylene.
Further, the low-grade asphalt is No. 15 hard asphalt; the coarse aggregate and the fine aggregate are both limestone; the antioxidant is a mixture of Mg-Al and Irgafos 1010.
Further, one or a mixture of more of the ultraviolet resisting agents UV531, UV326 and carbon black; the cross-linking agent is one or a mixture of methyl orthosilicate, aluminum isopropoxide and titanium acetylacetonate.
Further, the average particle size of the coarse aggregate is 4-6 mm; the average grain diameter of the fine aggregate is 1-4 mm; the average grain diameter of the mineral powder is 0.15-0.30 mm.
Example 1
The high modulus asphalt material with excellent durability comprises the following steps:
(1) the high modulus additive mainly comprises the following components in parts by weight: preparing 18 parts of styrene-butadiene-styrene block copolymer, 12 parts of high-density polyethylene, 10 parts of polyethylene PE, 8 parts of low-density polyethylene, 6 parts of organic silicon modified hydroxyl-terminated hyperbranched polyester resin, 6 parts of polypropylene and 6 parts of linear low-density polyethylene according to the formula, uniformly mixing the styrene-butadiene-styrene block copolymer, the high-density polyethylene, the polyethylene PE, the low-density polyethylene, the organic silicon modified hydroxyl-terminated hyperbranched polyester resin, the polypropylene and the linear low-density polyethylene, heating and melting at the temperature of 200 ℃, extruding by a screw extruder after heating and melting, cooling at normal temperature, cutting into granules and preparing the high-modulus additive;
(2) preparing No. 15 hard asphalt, high-modulus additives, coarse aggregates, fine aggregates, mineral powder, a mixture of Mg-Al and Irgafos 1010, a mixture of UV326 and carbon black, and methyl orthosilicate according to the formula;
(3) uniformly mixing the coarse aggregate, the fine aggregate and the mineral powder to obtain mixed powder; adding the high-modulus additive into the mixed powder, heating and stirring, wherein the stirring temperature is 210 ℃, the stirring frequency is 1200r/min, and the stirring time is 5min to obtain a mixture; meanwhile, heating the No. 15 hard asphalt at the temperature of 170 ℃, adding the mixture into the No. 15 hard asphalt during the heating process, and shearing the mixture for 15min at the rotating speed of 500r/min by using a high-speed shearing machine to obtain an asphalt base material;
(4) keeping the temperature of the asphalt base material at 170 ℃, adding a mixture of Mg-Al and Irgafos 1010, a mixture of UV326 and carbon black, and methyl orthosilicate, and shearing and stirring for 45min in a high-speed shearing machine to obtain a high-modulus asphalt material, wherein the rotating speed of the high-speed shearing machine is 5000 r/min.
Example 2
(1) The high modulus additive mainly comprises the following components in parts by weight: preparing 15 parts of styrene-butadiene-styrene block copolymer, 10 parts of high-density polyethylene, 12 parts of polyethylene PE, 10 parts of low-density polyethylene, 6 parts of organic silicon modified hydroxyl-terminated hyperbranched polyester resin, 8 parts of polypropylene and 5 parts of linear low-density polyethylene according to the formula, uniformly mixing the styrene-butadiene-styrene block copolymer, the high-density polyethylene, the polyethylene PE, the low-density polyethylene, the organic silicon modified hydroxyl-terminated hyperbranched polyester resin, the polypropylene and the linear low-density polyethylene, heating and melting at the temperature of 210 ℃, extruding by a screw extruder after heating and melting, cooling at normal temperature, cutting into granules and preparing the high-modulus additive;
(2) preparing a mixture of No. 15 hard asphalt, a high-modulus additive, coarse aggregate, fine aggregate, mineral powder, Mg-Al and Irgafos 1010, a mixture of UV531, methyl orthosilicate and aluminum isopropoxide according to the formula;
(3) uniformly mixing the coarse aggregate, the fine aggregate and the mineral powder to obtain mixed powder; adding the high-modulus additive into the mixed powder, heating and stirring, wherein the stirring temperature is 210 ℃, the stirring frequency is 1200r/min, and the stirring time is 3min to obtain a mixture; meanwhile, heating the No. 15 hard asphalt at 180 ℃, adding the mixture into the No. 15 hard asphalt during heating, and shearing for 10min at a rotating speed of 600r/min by using a high-speed shearing machine to obtain an asphalt base material;
(4) keeping the temperature of the asphalt base material at 180 ℃, adding a mixture of Mg-Al and Irgafos 1010, a mixture of UV531, methyl orthosilicate and aluminum isopropoxide, and shearing and stirring for 30min in a high-speed shearing machine to obtain a high-modulus asphalt material, wherein the rotating speed of the high-speed shearing machine is 6000 r/min.
Example 3
(1) The high modulus additive mainly comprises the following components in parts by weight: 16 parts of styrene-butadiene-styrene block copolymer, 12 parts of high-density polyethylene, 12 parts of polyethylene PE, 8 parts of low-density polyethylene, 10 parts of organic silicon modified hydroxyl-terminated hyperbranched polyester resin, 6 parts of polypropylene and 5 parts of linear low-density polyethylene, wherein the styrene-butadiene-styrene block copolymer, the high-density polyethylene, the polyethylene PE, the low-density polyethylene, the organic silicon modified hydroxyl-terminated hyperbranched polyester resin, the polypropylene and the linear low-density polyethylene are uniformly mixed, heated and melted at the temperature of 210 ℃, extruded by a screw extruder after being heated and melted, cooled at normal temperature and cut into granules to prepare the high-modulus additive;
(2) preparing the mixture of No. 15 hard asphalt, high-modulus additive, coarse aggregate, fine aggregate, mineral powder, Mg-Al and Irgafos 1010, UV531, carbon black mixture, aluminum isopropoxide and titanium acetylacetonate according to the formula;
(3) uniformly mixing the coarse aggregate, the fine aggregate and the mineral powder to obtain mixed powder; adding the high-modulus additive into the mixed powder, heating and stirring at 200 ℃, with the stirring frequency of 1500r/min and the stirring time of 4min to obtain a mixture; meanwhile, heating the No. 15 hard asphalt at 175 ℃, adding the mixture into the No. 15 hard asphalt during heating, and shearing for 15min at a rotating speed of 400r/min by using a high-speed shearing machine to obtain an asphalt base material;
(4) keeping the temperature of the asphalt base material at 175 ℃, adding a mixture of Mg-Al and Irgafos 1010, a mixture of UV531 and carbon black, a mixture of aluminum isopropoxide and titanium acetylacetonate, and shearing and stirring for 40min by a high-speed shearing machine to obtain a high-modulus asphalt material, wherein the rotating speed of the high-speed shearing machine is 5500 r/min.
Example 4
(1) The high modulus additive mainly comprises the following components in parts by weight: preparing 18 parts of styrene-butadiene-styrene block copolymer, 10 parts of high-density polyethylene, 10 parts of polyethylene PE, 8 parts of low-density polyethylene, 8 parts of organic silicon modified hydroxyl-terminated hyperbranched polyester resin, 6 parts of polypropylene and 5 parts of linear low-density polyethylene according to the formula, uniformly mixing the styrene-butadiene-styrene block copolymer, the high-density polyethylene, the polyethylene PE, the low-density polyethylene, the organic silicon modified hydroxyl-terminated hyperbranched polyester resin, the polypropylene and the linear low-density polyethylene, heating and melting at the temperature of 215 ℃, extruding by a screw extruder after heating and melting, cooling at normal temperature, cutting into granules and preparing the high-modulus additive;
(2) preparing No. 15 hard asphalt, high-modulus additive, coarse aggregate, fine aggregate, mineral powder, a mixture of Mg-Al and Irgafos 1010, one or more of UV326 and carbon black, and methyl orthosilicate according to the formula;
(3) uniformly mixing the coarse aggregate, the fine aggregate and the mineral powder to obtain mixed powder; adding the high-modulus additive into the mixed powder, heating and stirring at 200 ℃, with the stirring frequency of 1500r/min and the stirring time of 3min to obtain a mixture; meanwhile, heating the No. 15 hard asphalt at 180 ℃, adding the mixture into the No. 15 hard asphalt during heating, and shearing the mixture for 10-15min at a rotating speed of 600r/min by using a high-speed shearing machine to obtain an asphalt base material;
(4) keeping the temperature of the asphalt base stock at 1180 ℃, adding a mixture of Mg-Al and Irgafos 1010, one or more of UV326 and carbon black, and methyl orthosilicate, and shearing and stirring for 45min by a high-speed shearing machine to obtain a high-modulus asphalt material, wherein the rotating speed of the high-speed shearing machine is 5000 r/min.
Example 5
(1) The high modulus additive mainly comprises the following components in parts by weight: preparing materials according to the formula, namely, uniformly mixing the styrene-butadiene-styrene block copolymer, the high-density polyethylene, the polyethylene PE, the low-density polyethylene, the organic silicon modified hydroxyl-terminated hyperbranched polyester resin, the polypropylene and the linear low-density polyethylene, heating and melting at the temperature of 210 ℃, extruding the mixture by a screw extruder after heating and melting, cooling at normal temperature, and cutting into granules to obtain the high-modulus additive;
(2) preparing the mixture of No. 15 hard asphalt, high modulus additive, coarse aggregate, fine aggregate, mineral powder, Mg-Al and Irgafos 1010, the mixture of UV531 and UV326, aluminum isopropoxide and titanium acetylacetonate according to the formula;
(3) uniformly mixing the coarse aggregate, the fine aggregate and the mineral powder to obtain mixed powder; adding the high-modulus additive into the mixed powder, heating and stirring at 210 ℃, with the stirring frequency of 1200r/min and the stirring time of 4min to obtain a mixture; meanwhile, heating the No. 15 hard asphalt at 175 ℃, adding the mixture into the No. 15 hard asphalt during heating, and shearing for 15min at a rotating speed of 500r/min by using a high-speed shearing machine to obtain an asphalt base material;
(4) keeping the temperature of the asphalt base stock at 175 ℃, adding a mixture of Mg-Al and Irgafos 1010, a mixture of UV531 and UV326, aluminum isopropoxide and titanium acetylacetonate, and shearing and stirring for 45min by a high-speed shearing machine to obtain a high-modulus asphalt material, wherein the rotating speed of the high-speed shearing machine is 5000 r/min.
Effect verification
The high modulus bituminous materials obtained in the above examples 1, 2, 3, 4, 5 were compared with hard bitumen No. 15 (control).
The indexes are as follows, and the test results are shown in table 1.
(1) Penetration degree: according to the asphalt penetration test (T0604-. The thickness and the hardness degree of the asphalt are represented by the depth of the standard needle vertically penetrating into the asphalt within 5s at 25 ℃, and the unit is 0.1 mm;
(2) ductility: according to the asphalt ductility test (T0605-2011) in the Experimental Specification for asphalt and asphalt mixtures for road engineering (JTG E20-2011). The ductility was measured at 10 ℃ and 5 cm/min.
(3) Softening point: according to the asphalt ring-and-ball softening point test (T0606-.
TABLE 1 sample Performance test results
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Control sample | |
| Penetration degree | 17.0 | 16.9 | 17.3 | 17.2 | 17.6 | 15.2 |
| Ductility/cm | Brittle fracture | Brittle fracture | Brittle fracture | Brittle fracture | Brittle fracture | Brittle fracture |
| Softening point/. degree.C | 67.01 | 67.32 | 66.97 | 67.32 | 67.51 | 64.25 |
In addition, rutting is a manifestation of the damage of the asphalt pavement, and is the most prominent problem in three damage modes (rutting, water damage and low-temperature cracking) of the expressway, and the durability of the invention is tested by adopting a French rutting test, and the test result is shown in Table 2.
The large-scale French rutting test is a test method for measuring the rutting depth of an asphalt mixture under the action of repeated load of a pneumatic tire, measures the high-temperature rutting resistance of the asphalt mixture through the rutting deformation rate after certain rolling times, is a simulation test, can well simulate the actual condition of a vehicle running on an asphalt pavement, and can well reflect the whole process of forming real rutting on the road in the test process. The French rutting test method is characterized in that the operation of equipment is stopped after a test piece is subjected to specified load cycle times, and the rutting deformation rate is obtained according to 15 deformation values and the thickness of the test piece by calculating proportional rutting depths of a series of measurement values of the test piece.
(1) Test piece size: preparing the high modulus asphalt material obtained in the above examples 1, 2, 3, 4 and 5 and No. 15 hard asphalt (comparison sample) into a 500mm × 180mm × 100mm plate-shaped test piece compacted and formed by a large rut compactor, and curing the test piece for more than 48 hours in a room temperature environment after the forming is finished, so that the test piece can be used for a test;
(2) the test conditions are as follows: the formed high modulus asphalt material obtained in the above examples 1, 2, 3, 4, 5 and the parallelepiped test piece of the hard asphalt 15 (comparison sample) are pre-rolled for 1000 times in a large rut wheel rutting tester incubator (temperature is kept at 15 ℃ to 25 ℃) under the wheel load of one direction with the frequency of 1Hz, the load of 5KN and the pressure of a pneumatic tire of 600 +/-30 KPa, then the incubator temperature is set to be 60 ℃ required by the test for heating, the test is maintained for 12 to 16 hours in the 60 ℃ environment required by the test, and finally the test is carried out.
(3) Evaluation indexes of the wheel tracking test are as follows: and the rutting deformation rate is that when the accumulated number of times of rolling is 1000 times, 3000 times, 10000 times and 30000 times, the rutting depth of 15 measuring points on each test piece is respectively measured and recorded, except the last measurement, after the measurement and recording of each time are finished, the constant temperature box is closed, the temperature in the box is recovered to the test temperature (within the range of +/-2 ℃), rolling can be continuously carried out, and when the set total rolling times are all finished or the average rutting depth measured in the test exceeds 18mm, the test is finished.
TABLE 1 sample Performance test results
| Deformation Rate (%) of number of passes of Rolling (twice) | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Control sample |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1000 | 1.98 | 2.01 | 2.06 | 1.97 | 2.10 | 5.01 |
| 3000 | 2.56 | 2.61 | 2.54 | 2.51 | 2.60 | 5.54 |
| 10000 | 3.01 | 3.04 | 3.10 | 3.09 | 3.12 | 6.23 |
| 30000 | 3.56 | 3.60 | 3.57 | 3.59 | 3.61 | 7.02 |
In addition, when the high modulus asphalt materials obtained in the above examples 1, 2, 3, 4 and 5 are constructed, compared with No. 15 hard asphalt (comparison sample), the construction temperature is reduced by more than 25 ℃, and the energy consumption is reduced by more than 20%; the consumption of the petroleum asphalt is reduced by more than 10 percent; the dynamic stability of the material is more than 5000 times; the low-temperature performance of the material is improved by more than 30 percent; the water damage resistance of the material is improved by more than 30 percent; the durability of the material is comprehensively improved by more than 25 percent.
The invention has many applications, and the above description is only a preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (7)
1. A high modulus bituminous material with excellent durability is characterized in that the high modulus bituminous material mainly comprises the following components in parts by weight: 50-65 parts of low-grade asphalt, 15-25 parts of high-modulus additive, 5-10 parts of coarse aggregate, 5-10 parts of fine aggregate, 3-5 parts of mineral powder, 1-3 parts of antioxidant, 1-3 parts of anti-ultraviolet agent and 0.3-0.5 part of cross-linking agent; the high modulus additive mainly comprises the following components in parts by weight: 15-18 parts of styrene-butadiene-styrene block copolymer, 10-16 parts of high-density polyethylene, 10-12 parts of polyethylene PE, 5-10 parts of low-density polyethylene, 5-10 parts of organosilicon modified hydroxyl-terminated hyperbranched polyester resin, 5-10 parts of polypropylene and 5-10 parts of linear low-density polyethylene.
2. The high modulus bituminous material with excellent durability according to claim 1, characterized in that said low grade bitumen is number 15 hard bitumen; the coarse aggregate and the fine aggregate are both limestone; the antioxidant is a mixture of Mg-Al and Irgafos 1010.
3. The high modulus bituminous material with excellent durability according to claim 1, characterized in that said anti-UV agents UV531, UV326, carbon black or a mixture of several of them; the cross-linking agent is one or a mixture of methyl orthosilicate, aluminum isopropoxide and titanium acetylacetonate.
4. The high modulus bituminous material with excellent durability according to claim 1, characterized in that said coarse aggregate has an average particle size of 4-6 mm; the average grain diameter of the fine aggregate is 1-4 mm; the average grain diameter of the mineral powder is 0.15-0.30 mm.
5. The high modulus bituminous material with excellent durability according to any of claims 1 to 4, characterized by comprising the following steps:
(1) preparing styrene-butadiene-styrene block copolymer, high-density polyethylene, polyethylene PE, low-density polyethylene, organic silicon modified hydroxyl-terminated hyperbranched polyester resin, polypropylene and linear low-density polyethylene according to the formula, uniformly mixing the styrene-butadiene-styrene block copolymer, the high-density polyethylene, the polyethylene PE, the low-density polyethylene, the organic silicon modified hydroxyl-terminated hyperbranched polyester resin, the polypropylene and the linear low-density polyethylene, heating and melting the mixture, extruding the mixture by a screw extruder, cooling the mixture at normal temperature, and cutting the mixture into particles to prepare the high-modulus additive;
(2) preparing low-grade asphalt, high-modulus additive, coarse aggregate, fine aggregate, mineral powder, antioxidant, anti-ultraviolet agent and crosslinking agent according to the formula;
(3) uniformly mixing the coarse aggregate, the fine aggregate and the mineral powder to obtain mixed powder; adding the high-modulus additive into the mixed powder for heating and stirring, wherein the stirring temperature is 190-210 ℃, the stirring frequency is 1000-1500r/min, and the stirring time is 2-5min, so as to obtain a mixture; meanwhile, heating the low-grade asphalt, adding the mixture into the low-grade asphalt in the heating process, and shearing for 10-15min at the rotating speed of 400-600r/min by using a high-speed shearing machine to obtain an asphalt base material;
(4) keeping the temperature of the asphalt base material at 170-180 ℃, adding the antioxidant, the anti-ultraviolet agent and the cross-linking agent, and shearing and stirring for 30-50min in a high-speed shearing machine to obtain the high-modulus asphalt material.
6. The method for preparing a high modulus bituminous material with excellent durability as claimed in claim 5, wherein the temperature of the heating and melting in step (1) is 200-220 ℃; the heating temperature of the low-grade asphalt in the step (3) is 160-180 ℃.
7. The method for preparing high modulus asphalt material with excellent durability as claimed in claim 5, wherein the rotation speed of the high speed shearing machine after adding antioxidant, anti-UV agent, and cross-linking agent in step (5) is 5000-.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751678A (en) * | 2022-05-09 | 2022-07-15 | 广西北投交通养护科技集团有限公司 | High-performance low-noise asphalt pavement maintenance material and preparation method thereof |
| CN116790129A (en) * | 2023-08-25 | 2023-09-22 | 鄂尔多斯市路泰新材料科技发展有限公司 | High-viscosity modified asphalt and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773006A (en) * | 2012-10-17 | 2014-05-07 | 上海市政工程设计研究总院（集团）有限公司 | High-modulus bituminous mixture additive and preparation method thereof |
| CN109233313A (en) * | 2018-09-26 | 2019-01-18 | 上海仁聚新材料科技有限公司 | A kind of high-modulus asphalt modifying agent, high-modulus composite modified asphalt, asphalt and preparation method thereof |
| CN109971194A (en) * | 2019-04-17 | 2019-07-05 | 许昌金欧特沥青股份有限公司 | A kind of high-modulus rubber asphalt and preparation method thereof |
| CN110357495A (en) * | 2019-06-24 | 2019-10-22 | 中国路桥工程有限责任公司 | High Modulus Asphalt Mixture and preparation method thereof |
-
2020
- 2020-12-21 CN CN202011520507.1A patent/CN112574583A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103773006A (en) * | 2012-10-17 | 2014-05-07 | 上海市政工程设计研究总院（集团）有限公司 | High-modulus bituminous mixture additive and preparation method thereof |
| CN109233313A (en) * | 2018-09-26 | 2019-01-18 | 上海仁聚新材料科技有限公司 | A kind of high-modulus asphalt modifying agent, high-modulus composite modified asphalt, asphalt and preparation method thereof |
| CN109971194A (en) * | 2019-04-17 | 2019-07-05 | 许昌金欧特沥青股份有限公司 | A kind of high-modulus rubber asphalt and preparation method thereof |
| CN110357495A (en) * | 2019-06-24 | 2019-10-22 | 中国路桥工程有限责任公司 | High Modulus Asphalt Mixture and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751678A (en) * | 2022-05-09 | 2022-07-15 | 广西北投交通养护科技集团有限公司 | High-performance low-noise asphalt pavement maintenance material and preparation method thereof |
| CN116790129A (en) * | 2023-08-25 | 2023-09-22 | 鄂尔多斯市路泰新材料科技发展有限公司 | High-viscosity modified asphalt and preparation method thereof |
| CN116790129B (en) * | 2023-08-25 | 2023-11-28 | 鄂尔多斯市路泰新材料科技发展有限公司 | High-viscosity modified asphalt and preparation method thereof |
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