CN111593629A - Anti-freezing asphalt pavement structure and construction method thereof - Google Patents
Anti-freezing asphalt pavement structure and construction method thereof Download PDFInfo
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- CN111593629A CN111593629A CN202010434139.2A CN202010434139A CN111593629A CN 111593629 A CN111593629 A CN 111593629A CN 202010434139 A CN202010434139 A CN 202010434139A CN 111593629 A CN111593629 A CN 111593629A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/182—Aggregate or filler materials, except those according to E01C7/26
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/02—Concrete base for bituminous paving
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses an anti-freezing asphalt pavement structure, which belongs to the field of design buildings, and the low-temperature phase-change cement paste prepared by the method can absorb heat at high temperature and emit heat at low temperature, thereby effectively inhibiting the phenomenon of insufficient skid resistance of the pavement caused by icing of the asphalt pavement, and the specific scheme is as follows: comprises the following steps from the last time: the pavement comprises a pavement base layer, a slurry seal layer, a pavement lower surface layer, a pavement middle surface layer and a pavement upper surface layer; the pavement base layer is a cement-stabilized macadam base layer, the slurry seal layer is a mixture of emulsified asphalt and aggregates, the lower surface layer of the pavement is common asphalt concrete, and the middle surface layer and the upper surface layer of the pavement are made of asphalt concrete mixed with low-temperature phase-change cement slurry; the anti-freezing asphalt pavement structure provided by the invention improves the waterproof performance of asphalt concrete; anti ice asphalt pavement structure can effectively prevent the icy condition in road surface.
Description
Technical Field
The invention relates to the field of buildings, in particular to an anti-freezing asphalt pavement structure and a construction method thereof.
Background
The good and bad of the road surface skid resistance directly influences the driving safety of the automobile. And the climate in the southeast area of Yu of China to the southeast area of the Sichuan basin belongs to subtropical humid monsoon climate. In many mountains and hills in China, the altitude changes greatly, and the special topographic conditions make the area, even if it does not rain or snow, form dew, frost and ice on the asphalt pavement due to high air humidity, so-called dark ice (also called black ice) is not easy to be found by drivers, and the harm brought to the driving safety is even more than the snowing period.
The adhesion coefficient for dry asphalt concrete pavement was about 0.6, while the adhesion coefficient for snow pavement was 0.2 and the adhesion coefficient for ice pavement was 0.15, which was reduced to 1/3 and 1/4 for dry asphalt concrete pavement. Therefore, the automobile is easy to slip and deviate on the ice and snow road surface, the braking distance is obviously prolonged, the control stability and the safety of the automobile are seriously influenced, and the traffic accident rate is high.
Disclosure of Invention
In order to solve the technical problems, the invention provides a preparation method of tetradecane expanded graphite low-temperature phase-change cement mortar, and the finally produced low-temperature phase-change cement mortar has the advantages of phase-change temperature regulation, long service cycle, environmental protection, no toxicity and the like.
The technical purpose of the invention is realized by the following technical scheme:
a preparation method of tetradecane expanded graphite low-temperature phase-change cement mortar comprises the following components in percentage by mass: 100 parts of cement, 140-300 parts of sand, 30-60 parts of water and 10-30 parts of phase change material; the phase-change material takes expanded graphite as a carrier matrix and tetradecane as a phase-change substance.
As a preferable scheme, the method comprises the following steps:
s1: drying the expanded graphite;
s2: immersing the dried expanded graphite into tetradecane;
s3: mixing the solid-liquid mixture obtained in the step S2;
s4: carrying out suction filtration on the solid-liquid mixture obtained in the step S3;
s5: drying the solid phase obtained in the S4 to obtain a phase-change material;
s6: mixing the phase-change material, the cement, the sand and the water according to the corresponding mass ratio.
By adopting the scheme, fully dried expanded graphite is added into a container, and tetradecane is introduced, preferably the expanded graphite is completely submerged; and in the suction filtration process, pouring the mixed uniform mixture into a funnel, connecting a vacuum pump for suction filtration until no liquid drips from the bottom of the funnel, and repeatedly washing the beaker with the filtrate and carrying out suction filtration until no expanded graphite residue exists in the beaker.
As a preferable scheme, the mixing in the S3 process comprises the following steps: m1: placing a container containing the S2 solid-liquid mixture in a water bath kettle at 60 ℃;
m2: stirring: stirring at constant speed for 30min, and rotating speed of 160 rad/min;
m3: during the stirring process, the expanded graphite adsorbed on the wall of the vessel is scraped into the solid-liquid mixture.
By adopting the scheme, the expanded graphite on the wall of the container is scraped, so that the materials can be fully contacted to form the optimal proportion, and the materials are fully utilized;
as a preferable mode, in the S5 process, the solid phase is put into an oven and dried by blowing air at 80 ℃.
By adopting the scheme, in the drying process, the materials are taken out and weighed every half hour, and the surface drying state of the materials is observed; and (4) finishing the preparation of the composite phase change material when the sample is loose and granular until the mass loss rate of the phase change material is reduced.
As a preferred solution, the S6 process includes the steps of:
w1: mixing the phase change material with cement to form a uniform dry material;
w2: adding water to the dry material obtained in W1, and stirring;
w3: sand was added during stirring by W2.
As a preferable scheme, the grain diameter of the finished phase-change material is 0.3 mm-0.6 mm, and the bulk density is 0.298g/cm3。
As a preferred scheme, the phase-change cement slurry comprises the following components in percentage by mass: 100 parts of cement, 220-280 parts of sand, 45-55 parts of water and 15-25 parts of phase change material.
By adopting the technical scheme, the final finished product has better effect.
Preferably, the expanded graphite has a particle size of 50 mesh, a carbon content of 99% or more, and an expansion ratio of 400 times.
By adopting the technical scheme, the expandable graphite is placed in an oven, dried for two hours at 100 ℃, taken out and thinly spread in a crucible, the crucible is placed in a muffle furnace at 900 ℃ and calcined for 60 seconds, and taken out and cooled, so that the completely expanded expandable graphite is prepared.
Preferably, the cement is ordinary portland cement with a strength grade of 42.5.
As a preferred scheme, the sand adopts ISO standard sand.
An anti-freezing asphalt pavement structure comprises the low-temperature phase-change cement paste prepared by the method, and comprises the following components from the last time: the pavement comprises a pavement base layer, a slurry seal layer, a pavement lower surface layer, a pavement middle surface layer and a pavement upper surface layer; the base course of the pavement is a cement stabilized macadam base course, the slurry seal is a mixture of emulsified asphalt and aggregate, the lower surface course of the pavement is ordinary asphalt concrete, and the middle surface course and the upper surface course of the pavement are made of asphalt concrete mixed with low-temperature phase-change cement slurry.
As a preferable scheme, the middle layer of the pavement is made of modified asphalt concrete, and the upper layer of the pavement is made of asphalt concrete mixed with low-temperature phase-change cement paste.
As a preferable scheme, the asphalt concrete of the pavement upper layer uses macroporous asphalt concrete.
As a preferable scheme, the thickness of the road surface is designed according to the traffic volume and the local environment.
Preferably, the ratio of the phase change material to the cement mortar is determined according to a local temperature range.
A construction method of an anti-freezing asphalt pavement structure is used for the anti-freezing asphalt pavement structure and comprises the following steps:
x1: rolling the soil base;
x2: paving a pavement base layer on the ground after rolling;
x3: paving a slurry seal layer above the base course of the pavement;
x4: paving a lower pavement layer and a middle pavement layer above the slurry seal layer in sequence;
x5: paving asphalt concrete above the middle surface layer of the pavement;
x6: and paving low-temperature phase-change cement paste.
In the scheme, in the X6 process, the prepared low-temperature phase-change cement paste is uniformly paved on macroporous asphalt concrete and is poured by a cement grouting vehicle through a pouring machine plate.
As a preferable scheme, the method further comprises the following steps:
x7: after the step X6, removing the low-temperature phase-change cement paste separated from the pavement, and rolling;
x8: and preserving the paved road surface.
In conclusion, the invention has the following beneficial effects:
(1) the low-temperature phase change cement mortar produced by the preparation method of the tetradecane expanded graphite low-temperature phase change cement mortar provided by the invention has the advantages of phase change temperature regulation, long service cycle, environmental protection, no toxicity and the like;
(2) the low-temperature phase change cement mortar produced by the preparation method of the tetradecane expanded graphite low-temperature phase change cement mortar provided by the invention is suitable for paving the ground and the wall of civil buildings and commercial buildings, and adjusting the temperature of cement concrete pavements and the like;
(3) the low-temperature phase change cement slurry produced by the preparation method of the tetradecane expanded graphite low-temperature phase change cement slurry provided by the invention can achieve the effect of delaying ice condensation or snow melting and deicing, can prevent the ice condensation on the road surface, effectively solves the traffic safety problem of the ice-condensed road surface, avoids traffic accidents as much as possible, and improves the traffic capacity and the operation benefit of the road;
(4) the anti-freezing asphalt pavement structure provided by the invention improves the waterproof performance of asphalt concrete;
(5) the anti-freezing asphalt pavement structure provided by the invention can effectively prevent the pavement from being frozen;
(6) the construction method of the anti-freezing asphalt pavement structure provided by the invention has the advantages that the phase-change cement mortar is poured into the macroporous asphalt concrete, and the construction is simple and efficient.
Drawings
FIG. 1 is a schematic structural diagram of an anti-freezing asphalt pavement structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a pavement surface layer of an anti-ice-freezing asphalt pavement structure according to an embodiment of the present invention;
wherein: 1. a pavement base; 2. slurry sealing; 3. a sub-surface layer of a pavement; 4. a pavement middle layer; 5. a pavement upper layer; 6. aggregating; 7. asphalt; 8. low-temperature phase change cement slurry; 9. and (5) pouring into a machine plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
the tetradecane expanded graphite low-temperature phase change cement mortar is prepared by mixing a shape-stabilized composite phase change material, cement, fine aggregate and water, and the weight parts of the raw materials are as follows: 4.0% of phase change material, 28% of cement, 54% of fine aggregate and 14% of water. The fine aggregate adopts ISO standard sand.
The preparation method of the shaped composite phase change material comprises the steps of adding a certain mass of fully dried expanded graphite into a beaker, and pouring a phase change main material tetradecane, wherein the mass ratio of the tetradecane to the graphite is 100: 11. And (3) placing the beaker in a 60 ℃ water bath kettle, stirring at a constant speed of 30min and a rotating speed of 160rad/min, and scraping off the expanded graphite which is stirred and raised and is stuck on the wall of the beaker during the stirring so as to ensure the full contact and complete adsorption of the materials. And pouring the stirred uniform mixture into a funnel, connecting a vacuum pump for suction filtration until no liquid drips from the bottom of the funnel, repeatedly washing the beaker with the filtrate, and performing suction filtration until no expanded graphite residue exists in the beaker. And (3) putting the solid obtained by suction filtration into an oven for forced air drying at the temperature of 80 ℃, taking out the solid for weighing every half hour, and observing the surface drying state of the solid. And when the mass loss rate of the material is reduced and the sample is loose and granular, the preparation of the composite phase change material is considered to be finished.
The phase change temperature of the shape-stabilized composite phase change material is 4 ℃, and the phase change latent heat is 198.9J/g. The thermal characteristic parameters of the invention are all determined by a relaxation-resistant comprehensive thermal analyzer DSC214, and the same is applied below.
The preparation method of the tetradecane expanded graphite low-temperature phase-change cement mortar comprises the following steps:
1) the weight portions of the raw materials are as follows: 4.0% of phase change material, 28% of cement, 54% of fine aggregate and 14% of water, and preparing the material for later use;
2) and manually stirring and dispersing the cement and the shaped composite phase change material in a test basin, adding water, and adding sand in the process of adding water and stirring to obtain the tetradecane expanded graphite low-temperature phase change cement mortar.
Example 2:
the tetradecane expanded graphite low-temperature phase change cement mortar is prepared by mixing a shape-stabilized composite phase change material, cement, fine aggregate and water, and the weight parts of the raw materials are as follows: 4.50% of phase change material, 28% of cement, 53.5% of fine aggregate and 14% of water. The fine aggregate adopts ISO standard sand.
The preparation method of the shape-stabilized composite phase-change material comprises the steps of adding a certain mass of fully dried expanded graphite into a beaker, pouring a phase-change main material tetradecane, wherein the mass ratio of the tetradecane to the graphite is 100:11, placing the beaker into a 30 ℃ water bath kettle, stirring at a constant speed for 30min and a rotating speed of 160rad/min, and scraping the expanded graphite which is stirred and lifted and is stuck on the wall of the beaker during the stirring so as to ensure the full contact and complete adsorption of the materials. And pouring the stirred uniform mixture into a funnel, connecting a vacuum pump for suction filtration until no liquid drips from the bottom of the funnel, repeatedly washing the beaker with the filtrate, and performing suction filtration until no expanded graphite residue exists in the beaker. And (3) putting the solid obtained by suction filtration into an oven for forced air drying at the temperature of 80 ℃, taking out the solid for weighing every half hour, and observing the surface drying state of the solid. And when the mass loss rate of the material is reduced and the sample is loose and granular, the preparation of the composite phase change material is considered to be finished.
The phase change temperature of the shape-stabilized composite phase change material is 4.1 ℃, and the latent heat of phase change is 196.7J/g.
The preparation method of the tetradecane expanded graphite low-temperature phase-change cement mortar comprises the following steps:
1) the weight portions of the raw materials are as follows: 4.50% of phase change material, 28% of cement, 53.5% of fine aggregate and 14% of water, and preparing the material for later use;
2) manually stirring and dispersing the cement and the shaped composite phase change material in a test basin, adding water, and adding sand in the process of adding water and stirring to obtain the tetradecane expanded graphite low-temperature phase change cement mortar, wherein the related technical properties are shown in table 1.
Example 3:
the tetradecane expanded graphite low-temperature phase change cement mortar is prepared by mixing a shape-stabilized composite phase change material, cement, fine aggregate and water, and the weight parts of the raw materials are as follows: 5.40% of phase change material, 28% of cement, 52.6% of fine aggregate and 14% of water.
The fine aggregate adopts river sand of 0.3mm and 0.6mm, and each accounts for 50 percent.
The preparation method of the shape-stabilized composite phase-change material comprises the steps of adding a certain mass of fully dried expanded graphite into a beaker, pouring a phase-change main material tetradecane, wherein the mass ratio of the tetradecane to the graphite is 100:11, placing the beaker into a water bath kettle at 60 ℃, stirring at a constant speed for 30min and a rotating speed of 160rad/min, and scraping the expanded graphite which is stirred and lifted and is stuck on the wall of the beaker during the stirring so as to ensure the full contact and complete adsorption of the materials. And pouring the stirred uniform mixture into a funnel, connecting a vacuum pump for suction filtration until no liquid drips from the bottom of the funnel, repeatedly washing the beaker with the filtrate, and performing suction filtration until no expanded graphite residue exists in the beaker. And (3) putting the solid obtained by suction filtration into an oven for forced air drying at the temperature of 80 ℃, taking out the solid for weighing every half hour, and observing the surface drying state of the solid. And when the mass loss rate of the material is reduced and the sample is loose and granular, the preparation of the composite phase change material is considered to be finished.
The phase change temperature of the shape-stabilized composite phase change material is 4.3 ℃, and the latent heat of phase change is 200.8J/g.
The preparation method of the tetradecane expanded graphite low-temperature phase-change cement mortar comprises the following steps:
1) the weight portions of the raw materials are as follows: 5.40% of phase change material, 28% of cement, 52.6% of fine aggregate and 14% of water, and preparing the material for later use;
2) and manually stirring and dispersing the cement and the shaped composite phase change material in a test basin, adding water, and adding sand in the process of adding water and stirring to obtain the tetradecane expanded graphite low-temperature phase change cement mortar.
Example 4:
the tetradecane expanded graphite low-temperature phase change cement mortar is prepared by mixing a shape-stabilized composite phase change material, cement, fine aggregate and water, and the weight parts of the raw materials are as follows: 6.0% of phase change material, 28% of cement, 52% of fine aggregate and 14% of water. The fine aggregate adopts ISO standard sand.
The preparation method of the shape-stabilized composite phase-change material comprises the steps of adding a certain mass of fully dried expanded graphite into a beaker, pouring a phase-change main material tetradecane, wherein the mass ratio of the tetradecane to the graphite is 100:10, placing the beaker into a water bath kettle at 60 ℃, stirring at a constant speed for 30min and at a rotating speed of 160rad/min, and scraping the expanded graphite which is stirred and lifted and is stuck on the wall of the beaker during the stirring so as to ensure the full contact and complete adsorption of the materials. And pouring the stirred uniform mixture into a funnel, connecting a vacuum pump for suction filtration until no liquid drips from the bottom of the funnel, repeatedly washing the beaker with the filtrate, and performing suction filtration until no expanded graphite residue exists in the beaker. And (3) putting the solid obtained by suction filtration into an oven for forced air drying at the temperature of 80 ℃, taking out the solid for weighing every half hour, and observing the surface drying state of the solid. And when the mass loss rate of the material is reduced and the sample is loose and granular, the preparation of the composite phase change material is considered to be finished.
The phase change temperature of the shape-stabilized composite phase change material is 5.2 ℃, and the latent heat of phase change is 201.4J/g.
The preparation method of the tetradecane expanded graphite low-temperature phase-change cement mortar comprises the following steps:
1) the weight portions of the raw materials are as follows: 6.0% of phase change material, 28% of cement, 52% of fine aggregate and 14% of water, and preparing the material for later use;
2) manually stirring and dispersing the cement and the shaped composite phase change material in a test basin, adding water, and adding sand in the process of adding water and stirring to obtain the tetradecane expanded graphite low-temperature phase change cement mortar, wherein the related technical properties are shown in table 1.
| Example 1 | Example 2 | Example 3 | Example 4 | |
| Phase transition potential (J/g) | 198.9 | 196.7 | 200.8 | 201.4 |
| Compressive strength (MPa) | 25.2 | 18.2 | 28.6 | 19.1 |
| Flexural strength (MPa) | 5.5 | 4.5 | 6.7 | 4.9 |
TABLE 1
The compressive strength and the flexural strength of each example are shown in the table as standard 28d cure.
Example 5:
an anti-freezing asphalt 7 pavement structure comprises the low-temperature phase-change cement slurry 8 prepared by the method, and comprises the following components in part by weight: the pavement comprises a pavement base layer 1, a slurry seal layer 2, a pavement lower surface layer 3, a pavement middle surface layer 4 and a pavement upper surface layer 5; the pavement base layer 1 is a cement-stabilized macadam base layer, the slurry seal layer 2 is a mixture of emulsified asphalt 7 and aggregate 6, the pavement lower surface layer 3 is ordinary asphalt 7 concrete, and the pavement middle surface layer 4 and the pavement upper surface layer 5 are made of asphalt 7 concrete mixed with low-temperature phase-change cement paste 8.
In a preferred embodiment, the middle layer 4 of the pavement is made of modified asphalt 7 concrete, and the upper layer 5 of the pavement is made of asphalt 7 concrete mixed with low-temperature phase-change cement slurry 8.
As a preferred embodiment, the asphalt 7 concrete of the pavement upper surface layer 5 is macroporous asphalt 7 concrete.
As a preferred embodiment, the thickness of the road surface is designed according to the traffic volume and the local environment.
As a preferred embodiment, the ratio of the phase change material to the cement mortar is determined according to the local temperature range.
Example 6:
a construction method of an anti-freezing asphalt 7 pavement structure is used for the anti-freezing asphalt 7 pavement structure and comprises the following steps:
x1: rolling the soil base;
x2: paving a pavement base layer 1 on the ground after rolling;
x3: paving a slurry seal layer 2 above the pavement base layer 1;
x4: paving a pavement lower surface layer 3 and a pavement middle surface layer 4 above the slurry seal layer 2 in sequence;
x5: paving asphalt 7 concrete above the middle surface layer 4 of the pavement;
x6: and paving low-temperature phase change cement paste 8.
In the scheme, in the X6 process, prepared low-temperature phase-change cement slurry 8 is uniformly paved on macroporous asphalt 7 concrete and is poured by a cement grouting vehicle through a pouring machine plate 9.
As a preferred embodiment, the method further comprises the following steps:
x7: after the step X6, removing the low-temperature phase-change cement slurry 8 separated from the pavement, and rolling;
x8: and preserving the paved road surface.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides an anti-freezing bituminous pavement structure which characterized in that, includes low temperature phase transition grout (8), includes from last time by down: the pavement comprises a pavement base layer (1), a slurry seal layer (2), a pavement lower surface layer (3), a pavement middle surface layer (4) and a pavement upper surface layer (5); the pavement base layer (1) is a cement-stabilized macadam base layer, the slurry seal layer (2) is a mixture of emulsified asphalt (7) and aggregate (6), the pavement lower surface layer (3) is ordinary asphalt (7) concrete, and the pavement middle surface layer (4) and the pavement upper surface layer (5) are made of asphalt (7) concrete mixed with low-temperature phase-change cement slurry (8); the phase-change cement paste comprises the following components in percentage by mass: 100 parts of cement, 140-300 parts of sand, 30-60 parts of water and 10-30 parts of phase change material; the phase-change material takes expanded graphite as a carrier matrix and tetradecane as a phase-change substance.
2. The anti-freezing asphalt pavement structure according to claim 1, characterized in that the middle pavement layer (4) is made of modified asphalt (7) concrete, and the upper pavement layer (5) is made of asphalt (7) concrete mixed with low-temperature phase-change cement slurry (8).
3. The anti-freezing asphalt pavement structure according to claim 2, characterized in that the asphalt (7) concrete of the pavement upper layer (5) is macroporous asphalt (7) concrete.
4. An anti-ice-freezing asphalt pavement structure according to claim 3, wherein the pavement thickness is designed according to traffic volume and local environment.
5. The anti-ice-freezing asphalt pavement structure according to claim 4, wherein the ratio of the phase change material to the cement mortar is determined according to a local temperature range.
6. A construction method of an anti-freezing asphalt pavement structure based on the anti-freezing asphalt pavement structure of any one of claims 1 to 5, characterized by comprising the following steps:
x1: rolling the soil base;
x2: paving a pavement base layer (1) on the ground after rolling;
x3: paving a slurry seal layer (2) above the pavement base layer (1);
x4: paving a pavement lower surface layer (3) and a pavement middle surface layer (4) above the slurry seal layer (2) in sequence;
x5: paving asphalt (7) concrete above the middle surface layer (4) of the pavement;
x6: and paving low-temperature phase change cement paste (8).
7. An anti-ice-freezing asphalt pavement structure according to claim 6, further comprising the steps of:
x7: after the step X6, removing the low-temperature phase-change cement paste (8) separated from the pavement, and rolling;
x8: and preserving the paved road surface.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108415A (en) * | 2021-12-08 | 2022-03-01 | 武汉理工大学 | Double-layer phase-change temperature-adjusting asphalt pavement structure |
| CN114507032A (en) * | 2021-12-08 | 2022-05-17 | 四川省交通勘察设计研究院有限公司 | Anti-freezing agent and preparation method and application thereof |
| CN115012272A (en) * | 2022-06-29 | 2022-09-06 | 哈尔滨工业大学 | Gradient heat conduction bituminous pavement suitable for frozen soil area |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202227220U (en) * | 2011-09-07 | 2012-05-23 | 重庆中设工程设计有限公司 | Drainage type asphalt concrete road surface |
| CN102515650A (en) * | 2011-12-27 | 2012-06-27 | 武汉理工大学 | Phase change thermoregulation cement pitch composition concrete and preparation method thereof |
| CN103193432A (en) * | 2013-03-13 | 2013-07-10 | 浙江建设职业技术学院 | Antifreezing concrete |
| CN104650815A (en) * | 2015-02-06 | 2015-05-27 | 桂林电子科技大学 | Composite figuration phase change cold-storage material and preparation method thereof |
| CN204530380U (en) * | 2015-04-03 | 2015-08-05 | 天津城建设计院有限公司 | Antifreeze Self-leveling color asphalt mortar Steel Bridge Deck walkway paving structure |
-
2020
- 2020-05-21 CN CN202010434139.2A patent/CN111593629A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202227220U (en) * | 2011-09-07 | 2012-05-23 | 重庆中设工程设计有限公司 | Drainage type asphalt concrete road surface |
| CN102515650A (en) * | 2011-12-27 | 2012-06-27 | 武汉理工大学 | Phase change thermoregulation cement pitch composition concrete and preparation method thereof |
| CN103193432A (en) * | 2013-03-13 | 2013-07-10 | 浙江建设职业技术学院 | Antifreezing concrete |
| CN104650815A (en) * | 2015-02-06 | 2015-05-27 | 桂林电子科技大学 | Composite figuration phase change cold-storage material and preparation method thereof |
| CN204530380U (en) * | 2015-04-03 | 2015-08-05 | 天津城建设计院有限公司 | Antifreeze Self-leveling color asphalt mortar Steel Bridge Deck walkway paving structure |
Non-Patent Citations (2)
| Title |
|---|
| 杨旭: "《中国科技发展经典文库》", 30 April 2005, 中国档案出版社 * |
| 苟珊: "水泥路面抗凝冰低温相变材料开发与性能研究", 《中国学位论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108415A (en) * | 2021-12-08 | 2022-03-01 | 武汉理工大学 | Double-layer phase-change temperature-adjusting asphalt pavement structure |
| CN114507032A (en) * | 2021-12-08 | 2022-05-17 | 四川省交通勘察设计研究院有限公司 | Anti-freezing agent and preparation method and application thereof |
| CN115012272A (en) * | 2022-06-29 | 2022-09-06 | 哈尔滨工业大学 | Gradient heat conduction bituminous pavement suitable for frozen soil area |
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