CN110965425A - Asphalt concrete pavement construction method - Google Patents
Asphalt concrete pavement construction method Download PDFInfo
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- CN110965425A CN110965425A CN201911343471.1A CN201911343471A CN110965425A CN 110965425 A CN110965425 A CN 110965425A CN 201911343471 A CN201911343471 A CN 201911343471A CN 110965425 A CN110965425 A CN 110965425A
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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
- 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
Abstract
The invention relates to the technical field of pavement construction, in particular to a method for constructing an asphalt concrete pavement, which comprises the following steps: s1, digging a groove; s2, laying a base layer; s3, laying a cushion layer; s4, backfilling soil with the thickness of 3-5mm and compacting to form a transition layer; s5, paving a first asphalt surface layer; s6, laying a second asphalt surface layer; s7, pouring a concrete surface layer; the concrete surface layer is formed by pouring antifreeze concrete slurry; the antifreeze concrete slurry comprises the following components in parts by weight: 100 parts of Portland cement; 200 portions and 250 portions of talcum powder; 300 portions and 350 portions of powder filler; 10-12 parts of polyphenyl methylsiloxane; 3-5 parts of benzophenone dimethyl ketal; 90-110 parts of water. The invention has the advantages that the frost resistance of the concrete surface layer is stronger, the pavement is not easy to be damaged by freezing, the possibility of side turning of vehicles driving at high speed caused by pavement cracking is reduced, the pavement is safer and more reliable, and the pavement construction method has wider applicability.
Description
Technical Field
The invention relates to the technical field of pavement construction, in particular to a method for constructing an asphalt concrete pavement.
Background
At present, along with the increasing popularization of vehicles, the demand on roads is also increased, and the requirement on the quality of the roads is also increased.
When the existing asphalt concrete pavement is constructed, an asphalt surface layer is usually paved firstly, and then concrete slurry is poured, so that a concrete structure is combined with an asphalt structure, the asphalt concrete pavement has better elasticity, the driving comfort level is improved, meanwhile, the pavement is smooth and flat, and is suitable for high-speed driving, and the asphalt concrete pavement is suitable for high-grade highways.
The above prior art solutions have the following drawbacks: since the concrete structure is easily frozen at low temperature, when the asphalt concrete road is used for high-grade highways such as expressways, once frozen cracks occur in cold regions, the road surface is uneven, so that vehicles running at high speed are easily turned over, serious traffic accidents are easily caused, and therefore, the improvement space is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the asphalt concrete pavement construction method which has the effect that the pavement is not easy to frost crack.
The above object of the present invention is achieved by the following technical solutions:
a construction method of an asphalt concrete pavement comprises the following steps:
s1, digging a groove;
s2, laying a base layer;
s3, laying a cushion layer;
s4, backfilling soil with the thickness of 3-5mm and compacting to form a transition layer;
s5, paving a first asphalt surface layer;
s6, laying a second asphalt surface layer;
s7, pouring a concrete surface layer;
the concrete surface layer is formed by pouring antifreeze concrete slurry;
the antifreeze concrete slurry comprises the following components in parts by weight:
100 parts of Portland cement;
200 portions and 250 portions of talcum powder;
300 portions and 350 portions of powder filler;
10-12 parts of polyphenyl methylsiloxane;
3-5 parts of benzophenone dimethyl ketal;
90-110 parts of water.
By adopting the technical scheme, the concrete surface layer is formed by pouring the anti-freezing concrete grout, so that the anti-freezing capacity of the concrete surface layer is stronger, the anti-freezing cracking capacity of the concrete surface layer is stronger, the pavement is not easy to be damaged by freezing, the possibility of side turning of a vehicle driving at a high speed due to pavement cracking is reduced, the pavement is safer and more reliable, and the applicability of the pavement construction method is wider;
the soil is backfilled to form a transition layer, so that the elasticity of the pavement is further improved, and the vibration impact is buffered by using a filter layer, so that the pavement is more comfortable;
the polyphenyl methylsiloxane and the benzophenone dimethyl ketal are added into the antifreeze concrete slurry and are matched according to a specific proportion, so that the antifreeze performance of a concrete structure prepared from the antifreeze concrete slurry is effectively improved, and the concrete structure is not easy to freeze;
by adding the talcum powder into the antifreeze concrete slurry, the lubrication degree of the antifreeze concrete slurry is effectively improved, so that the antifreeze concrete slurry is easy to flow, and can fully permeate into an asphalt structure, and the concrete structure and the asphalt structure are better combined;
the anti-freezing concrete slurry is free of coarse aggregates and fine aggregates and is filled with powder, so that the anti-freezing concrete is easy to permeate into the asphalt structure, and the concrete structure is better combined with the asphalt structure.
The present invention in a preferred example may be further configured to: the powder filler comprises the following components in percentage by mass:
granite powder: basalt powder: zircon powder: dolomite powder: calcite powder 1: 2: 1: 0.5: 0.5.
by adopting the technical scheme, the powder filler is composed of granite powder, basalt powder, zircon powder, dolomite powder and calcite powder in a specific proportion, so that the compressive strength of the concrete structure prepared from the antifreeze concrete slurry is higher, the bearing capacity of the pavement is increased, the pavement is not easy to be rolled and damaged by vehicles with large bearing capacity, and the structural stability of the pavement is improved.
The present invention in a preferred example may be further configured to: the antifreeze concrete slurry also comprises the following components in parts by weight:
3-5 parts of adamantanone.
By adopting the technical scheme, the adamantine ketone, the polyphenyl methyl siloxane and the benzophenone dimethyl ketal are just added into the antifreeze concrete slurry to be matched, so that the antifreeze capacity of the modified antifreeze concrete slurry is better, and the prepared concrete structure has better antifreeze performance.
The present invention in a preferred example may be further configured to: the antifreeze concrete slurry also comprises the following components in parts by weight:
10-12 parts of glass fiber.
By adopting the technical scheme, the glass fiber is added into the antifreeze concrete slurry, so that the cracking resistance of a concrete structure prepared from the antifreeze concrete slurry at normal temperature is effectively improved, the pavement is not easy to crack, and the structural stability of the pavement is improved.
The present invention in a preferred example may be further configured to: the antifreeze concrete slurry also comprises the following components in parts by weight:
3-5 parts of pineapple leaf fiber.
Through adopting above-mentioned technical scheme, through adding pineapple leaf fibre in the frost resistant concrete thick liquid, effectively improve the compressive capacity of the concrete structure of frost resistant concrete thick liquid preparation for the road surface is difficult to be rolled deformation, improves the structural stability on road surface.
The present invention in a preferred example may be further configured to: the antifreeze concrete slurry also comprises the following components in parts by weight:
10-15 parts of hollow glass beads.
By adopting the technical scheme, the hollow glass beads are added into the antifreeze concrete slurry, and the concrete surface layer has certain elasticity through the micro elastic deformation of the hollow glass beads in the concrete surface layer, so that the driving comfort of the road surface is further improved.
The present invention in a preferred example may be further configured to: the preparation method of the antifreeze concrete slurry comprises the following steps:
s01, mixing portland cement and water, and uniformly stirring to form cement slurry;
s02, adding talcum powder into the cement slurry, and uniformly stirring to form a primary mixture;
s03, adding polyphenyl methylsiloxane and benzophenone dimethyl ketal into the primary mixture, and uniformly stirring to form a premix;
s04, adding powder filler into the premix, and uniformly stirring to form the antifreeze concrete slurry.
Through adopting above-mentioned technical scheme, through adding the talcum powder in the cement thick liquid for the cement thick liquid is more lubricated, then when adding the remaining material again, the remaining material will be more easily dispersed, make the efficiency of stirring can improve, through adding polyphenyl methyl siloxane earlier, benzophenone dimethyl ketal and stirring evenly after adding the powder filler, guarantee polyphenyl methyl siloxane, benzophenone dimethyl ketal dispersion even, thereby guarantee the effect of modified freeze proof concrete thick liquid anti-freezing performance, make freeze proof concrete thick liquid quality preferred.
The present invention in a preferred example may be further configured to: in the step S03, adamantanone, glass fiber, pineapple leaf fiber and hollow glass beads are also added.
By adopting the technical scheme, the concrete structure prepared from the prepared anti-freezing concrete slurry has better anti-freezing performance, anti-cracking performance, cracking performance and better quality.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the concrete surface layer is formed by pouring the anti-freezing concrete grout, so that the anti-freezing capacity of the concrete surface layer is stronger, the anti-freezing cracking capacity of the concrete surface layer is stronger, the pavement is not easy to be damaged by freezing, the possibility of side turning of vehicles driving at high speed due to pavement cracking is reduced, the pavement is safer and more reliable, and the pavement construction method has wider applicability;
2. the soil is backfilled to form a transition layer, so that the elasticity of the pavement is further improved, and the vibration impact is buffered by using a filter layer, so that the pavement is more comfortable;
3. the polyphenyl methyl siloxane, the benzophenone dimethyl ketal and the adamantanone are added into the antifreeze concrete slurry and are matched according to a specific proportion, so that the antifreeze performance of a concrete structure prepared from the antifreeze concrete slurry is effectively improved, and the concrete structure is not easy to freeze.
Drawings
FIG. 1 is a schematic flow diagram of a freeze resistant concrete slurry according to the present invention;
FIG. 2 is a schematic flow chart of the asphalt concrete pavement construction method of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the following examples and comparative examples:
the portland cement is 425 portland cement sold by Runhyi building materials Co., Ltd, of Fushan city;
the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent sold by Zhengzhou beer chemical product limited company;
talcum powder sold by honest fine-mesh stone powder factories in talcum powder marine cities;
the polyphenyl methyl siloxane is polyphenyl methyl siloxane sold by Anhui Aiyuta silicone oil company Limited;
the benzophenone dimethyl ketal is the benzophenone dimethyl ketal sold by Jinjinle chemical company Limited;
the granite powder is wear-resistant granite powder sold by Xin Lei mineral powder processing factories in Tang county;
the basalt powder is sold by mineral processing factories of Zhang county Zetong;
the zircon powder is the zircon powder sold by Zhanteng mineral processing factories in Lingshou county;
the dolomite powder is the dolomite powder sold by Lingshou county Xin Tuo mineral processing Co., Ltd;
the calcite powder is sold by Shengfei mineral product processing factories in Lingshou county;
the adamantanone is adamantanone sold by the Tiaoao chemical industry Co., Ltd, Guangzhou;
the glass fiber is sold by the science and technology new material company of Xuanying county Xuanye;
the pineapple leaf fiber is sold by Chongqing Dongyi grass cloth Co., Ltd;
the hollow glass beads are sold by glass bead Limited of Haiyu, Yongqing county.
Example 1
Referring to fig. 1, the invention discloses a frost-resistant concrete slurry, which is prepared by the following steps:
s01, adding 100kg of Portland cement, 90kg of water and 11kg of water reducing agent into a stirring kettle, stirring at the rotating speed of 80r/min for 3min to form cement slurry.
S02, adding 200kg of talcum powder into the cement slurry, stirring at the rotating speed of 60r/min for 5min to form a primary mixture.
S03, adding 10kg of polyphenyl methyl siloxane and 3kg of benzophenone dimethyl ketal into the primary mixture, rotating at 60r/min, and stirring for 6min to form a premix.
S04, adding 300kg of powder filler into the premix, stirring for 10min at the rotating speed of 45r/min to form the antifreeze concrete slurry, and continuously stirring at the rotating speed of 20r/min until the use is finished.
The powder filler is composed of the following raw materials in mass ratio:
granite powder: basalt powder: zircon powder: dolomite powder: calcite powder 1: 2: 1: 0.5: 0.5.
example 2
Referring to fig. 1, the invention discloses a frost-resistant concrete slurry, which is prepared by the following steps:
s01, adding 100kg of Portland cement, 100kg of water and 10kg of water reducing agent into a stirring kettle, stirring at the rotating speed of 80r/min for 3min to form cement slurry.
S02, adding 225kg of talcum powder into the cement slurry, stirring at the rotating speed of 60r/min for 5min to form a primary mixture.
S03, adding 11kg of polyphenyl methyl siloxane and 4kg of benzophenone dimethyl ketal into the primary mixture, rotating at 60r/min, and stirring for 6min to form a premix.
And S04, adding 325kg of powder filler into the premix, stirring for 10min at the rotating speed of 45r/min to form antifreeze concrete slurry, and continuously stirring at the rotating speed of 20r/min until the use is finished.
The powder filler is composed of the following raw materials in mass ratio:
granite powder: basalt powder: zircon powder: dolomite powder: calcite powder 1: 2: 1: 0.5: 0.5.
example 3
Referring to fig. 1, the invention discloses a frost-resistant concrete slurry, which is prepared by the following steps:
s01, adding 100kg of Portland cement, 110kg of water and 9kg of water reducing agent into a stirring kettle, stirring at the rotating speed of 80r/min for 3min to form cement slurry.
S02, adding 250kg of talcum powder into the cement slurry, stirring at the rotating speed of 60r/min for 5min to form a primary mixture.
S03, adding 12kg of polyphenyl methyl siloxane and 5kg of benzophenone dimethyl ketal into the primary mixture, rotating at 60r/min, and stirring for 6min to form a premix.
S04, adding 350kg of powder filler into the premix, stirring for 10min at the rotating speed of 45r/min to form antifreeze concrete slurry at the rotating speed of 20r/min, and continuously stirring until the use is finished.
The powder filler is composed of the following raw materials in mass ratio:
granite powder: basalt powder: zircon powder: dolomite powder: calcite powder 1: 2: 1: 0.5: 0.5.
example 4
Referring to fig. 1, the invention discloses a frost-resistant concrete slurry, which is prepared by the following steps:
s01, adding 100kg of Portland cement, 100kg of water and 10kg of water reducing agent into a stirring kettle, stirring at the rotating speed of 80r/min for 3min to form cement slurry.
S02, adding 220kg of talcum powder into the cement slurry, stirring at the rotating speed of 60r/min for 5min to form a primary mixture.
S03, adding 11kg of polyphenyl methyl siloxane and 3kg of benzophenone dimethyl ketal into the primary mixture, rotating at 60r/min, and stirring for 6min to form a premix.
S04, adding 340kg of powder filler into the premix, stirring for 10min at the rotating speed of 45r/min to form antifreeze concrete slurry at the rotating speed of 20r/min, and continuously stirring until the use is finished.
The powder filler is composed of the following raw materials in mass ratio:
granite powder: basalt powder: zircon powder: dolomite powder: calcite powder 1: 2: 1: 0.5: 0.5.
example 5
The difference from example 4 is that:
in step S03, 3kg of adamantanone was also added.
Example 6
The difference from example 4 is that:
in step S03, 4kg of adamantanone was also added.
Example 7
The difference from example 4 is that:
in step S03, 5kg of adamantanone was also added.
Example 8
The difference from example 4 is that:
in step S03, 3.5kg of adamantanone was also added.
Example 9
The difference from example 4 is that:
in step S03, 10kg of glass fiber was added.
The glass fiber length was 5 mm.
Example 10
The difference from example 4 is that:
11kg of glass fiber was also added in step S03.
The glass fiber length was 5 mm.
Example 11
The difference from example 4 is that:
in step S03, 12kg of glass fiber was also added.
The glass fiber length was 5 mm.
Example 12
The difference from example 4 is that:
11.5kg of glass fiber was also added in step S03.
The glass fiber length was 5 mm.
Example 13
The difference from example 4 is that:
in step S03, 3kg of pineapple leaf fiber is also added.
The length of the pineapple leaf fiber is 2 mm.
Example 14
The difference from example 4 is that:
in step S03, 4kg of pineapple leaf fiber is also added.
The length of the pineapple leaf fiber is 2 mm.
Example 15
The difference from example 4 is that:
5kg of pineapple leaf fiber is also added in the step S03.
The length of the pineapple leaf fiber is 2 mm.
Example 16
The difference from example 4 is that:
in step S03, 4.5kg of pineapple leaf fiber is also added.
The length of the pineapple leaf fiber is 2 mm.
Example 17
The difference from example 4 is that:
in step S03, 10kg of hollow glass beads were also added.
Example 18
The difference from example 4 is that:
in step S03, 12.5kg of hollow glass beads were also added.
Example 19
The difference from example 4 is that:
in step S03, 15kg of hollow glass beads were also added.
Example 20
The difference from example 4 is that:
13kg of hollow glass beads were also added in step S03.
Example 21
The difference from example 4 is that:
in step S03, 3kg of adamantanone, 10kg of glass fiber, 3kg of pineapple leaf fiber and 10kg of hollow glass bead are added.
The glass fiber length was 5 mm.
The length of the pineapple leaf fiber is 2 mm.
Example 22
The difference from example 4 is that:
in step S03, 4kg of adamantanone, 11kg of glass fiber, 4kg of pineapple leaf fiber and 12.5kg of hollow glass microsphere are added.
The glass fiber length was 5 mm.
The length of the pineapple leaf fiber is 2 mm.
Example 23
The difference from example 4 is that:
in step S03, 5kg of adamantanone, 12kg of glass fiber, 5kg of pineapple leaf fiber and 15kg of hollow glass bead are added.
The glass fiber length was 5 mm.
The length of the pineapple leaf fiber is 2 mm.
Example 24
The difference from example 4 is that:
3.5kg of adamantanone, 11.5kg of glass fiber, 4.5kg of pineapple leaf fiber and 13kg of hollow glass microsphere are also added in the step S03.
The glass fiber length was 5 mm.
The length of the pineapple leaf fiber is 2 mm.
Example 25
Referring to fig. 2, the asphalt concrete pavement construction method disclosed by the invention comprises the following steps:
s1, digging a groove, which comprises the following steps:
and digging a groove according to a design drawing.
S2, laying a base layer, specifically comprising the following steps:
compacting the bottom of the groove by a road roller, and then paving a layer of stone with the grain diameter of 35 +/-1 cm on the bottom of the groove to form a base layer.
S3, paving a cushion layer, which specifically comprises the following steps:
and paving broken stones with the particle size of 3cm +/-1 cm on the base layer to form a cushion layer, wherein the thickness of the cushion layer is 8 cm.
S4, backfilling thick soil and compacting to form a transition layer, wherein the steps are as follows:
and backfilling 4 +/-1 cm of soil on the cushion layer, and compacting the soil by a press machine to form a transition layer.
S5, paving a first asphalt surface layer, which specifically comprises the following steps:
and paving an asphalt mixture on the transition layer, compacting by a road roller to form a first asphalt surface layer, wherein the thickness of the first asphalt surface layer is 8 mm.
S6, laying a second asphalt surface layer, which comprises the following specific steps:
paving the asphalt mixture on the first asphalt surface layer, compacting by a road roller to form a second asphalt surface layer, wherein the thickness of the second asphalt surface layer is 7 mm.
S7, pouring a concrete surface layer, which comprises the following specific steps:
and pouring antifreeze concrete slurry on the second asphalt surface layer to form a concrete surface layer, wherein the thickness of the concrete surface layer is 5 mm.
In this example, the antifreeze concrete slurry of example 24 was used.
In other embodiments, the antifreeze concrete slurries of examples 1-23 can also be used
The implementation principle of the embodiment is as follows: by adopting the anti-freezing concrete slurry to pour the concrete surface layer, the concrete surface layer has better anti-freezing performance, the concrete surface layer is not easy to freeze and crack, the applicability of the concrete surface layer in cold areas is improved, and the applicability of the construction method of the asphalt concrete pavement is wider.
The elasticity of the pavement is further increased by backfilling soil and compacting to form a transition layer, so that
Comparative example 1
The difference from example 4 is that:
in step S03, no polyphenylmethylsiloxane is added.
Comparative example 2
The difference from example 4 is that:
in step S03, benzophenone dimethyl ketal was not added.
Comparative example 3
The difference from example 4 is that:
in step S03, neither polyphenylmethylsiloxane nor benzophenone dimethyl ketal was added.
Comparative example 4
The difference from example 4 is that:
the powder filler is composed of the following raw materials in mass ratio:
granite powder: basalt powder: zircon powder: dolomite powder: calcite powder 1: 1: 1: 1: 1.
experiment 1
The crack index of the samples prepared from the antifreeze concrete slurries of examples 1 to 24 and comparative examples 1 to 4 was tested according to GB/T29417-2012 test method for the drying shrinkage cracking performance of cement mortar and concrete.
Experiment 2
The samples prepared from the antifreeze concrete slurries of examples 1 to 24 and comparative examples 1 to 4 were tested for their 7d compressive strength (MPa) and 28d compressive strength (MPa) according to the compressive strength test in GB/T50081-2002 Standard test methods for mechanical Properties of ordinary concrete.
Experiment 3
The samples prepared from the antifreeze concrete slurries of examples 1 to 24 and comparative examples 1 to 4 were tested for their antifreeze rating according to the water penetration resistance test in GB/T50082-2009 Standard test methods for testing the Long-term Performance and durability of ordinary concrete.
The specific experimental data are shown in Table 1
TABLE 1
According to the comparison of the data of comparative examples 1-3 and example 4 in table 1, the polyphenyl methyl siloxane and the benzophenone dimethyl ketal which are independently added into the antifreeze concrete slurry have no obvious influence on the performance of the sample prepared from the antifreeze concrete slurry, and the polyphenyl methyl siloxane and the benzophenone dimethyl ketal which are added into the antifreeze concrete slurry according to a specific proportion can effectively improve the antifreeze performance of the sample prepared from the antifreeze concrete slurry, so that the sample is not easy to frost crack, the prepared pavement is stable and not easy to frost crack in a cold area, and the applicability of the asphalt concrete pavement construction method is wider.
According to comparison of data of comparative example 4 and example 4 in table 1, granite powder, basalt powder, zircon powder, dolomite powder and calcite powder are added into the antifreeze concrete slurry according to a specific proportion, so that the compressive strength of a sample prepared from the antifreeze concrete slurry is effectively improved, the prepared pavement has strong compressive strength and is not easy to damage due to compression, and the structural stability of the pavement is improved.
According to comparison of data of examples 5-8 and example 4 in table 1, the addition of adamantanone, polyphenyl methylsiloxane and benzophenone dimethyl ketal in a specific ratio in the antifreeze concrete slurry further improves the antifreeze performance of the antifreeze concrete slurry, so that a sample prepared from the antifreeze concrete slurry is less prone to frost cracking, and the applicability of the pavement construction method is improved.
According to comparison of data of examples 9-12 and example 4 in table 1, the glass fiber is added into the antifreeze concrete slurry, so that the crack resistance of a sample prepared from the antifreeze concrete slurry is effectively improved, a pavement prepared from the antifreeze concrete slurry is not easy to crack due to stress, and the structural stability of the pavement is improved.
According to the comparison of the data of the examples 13-16 and the example 4 in the table 1, the pineapple leaf fiber is added into the antifreeze concrete slurry, which is helpful for improving the compressive strength of the sample of the antifreeze concrete slurry, so that the pavement prepared from the antifreeze concrete slurry is not easy to damage due to stress, and the structural stability of the pavement is improved.
As can be seen from a comparison of the data in Table 1 for examples 17-20 with example 4, the addition of hollow glass microspheres to the antifreeze concrete slurry did not significantly adversely affect the physical properties of the samples prepared from the antifreeze concrete slurry.
According to the data of the examples 21 to 24 in the table 1, the samples prepared from the antifreeze concrete slurry have better flowability, better antifreeze performance, better crack resistance and better compression resistance, and better quality.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A construction method of an asphalt concrete pavement is characterized by comprising the following steps: the method comprises the following steps:
s1, digging a groove;
s2, laying a base layer;
s3, laying a cushion layer;
s4, backfilling soil with the thickness of 3-5mm and compacting to form a transition layer;
s5, paving a first asphalt surface layer;
s6, laying a second asphalt surface layer;
s7, pouring a concrete surface layer;
the concrete surface layer is formed by pouring antifreeze concrete slurry;
the antifreeze concrete slurry comprises the following components in parts by weight:
100 parts of Portland cement;
200 portions and 250 portions of talcum powder;
300 portions and 350 portions of powder filler;
10-12 parts of polyphenyl methylsiloxane;
3-5 parts of benzophenone dimethyl ketal;
90-110 parts of water.
2. The asphalt concrete pavement construction method according to claim 1, characterized in that: the powder filler comprises the following components in percentage by mass:
granite powder: basalt powder: zircon powder: dolomite powder: calcite powder = 1: 2: 1: 0.5: 0.5.
3. the asphalt concrete pavement construction method according to claim 1, characterized in that: the antifreeze concrete slurry also comprises the following components in parts by weight:
3-5 parts of adamantanone.
4. The asphalt concrete pavement construction method according to claim 1, characterized in that: the antifreeze concrete slurry also comprises the following components in parts by weight:
10-12 parts of glass fiber.
5. The asphalt concrete pavement construction method according to claim 1, characterized in that: the antifreeze concrete slurry also comprises the following components in parts by weight:
3-5 parts of pineapple leaf fiber.
6. The asphalt concrete pavement construction method according to claim 1, characterized in that: the antifreeze concrete slurry also comprises the following components in parts by weight:
10-15 parts of hollow glass beads.
7. The asphalt concrete pavement construction method according to claim 1, characterized in that: the preparation method of the antifreeze concrete slurry comprises the following steps:
s01, mixing portland cement and water, and uniformly stirring to form cement slurry;
s02, adding talcum powder into the cement slurry, and uniformly stirring to form a primary mixture;
s03, adding polyphenyl methylsiloxane and benzophenone dimethyl ketal into the primary mixture, and uniformly stirring to form a premix;
s04, adding powder filler into the premix, and uniformly stirring to form the antifreeze concrete slurry.
8. A method of constructing an asphalt pavement according to claim 7, wherein: in the step S03, adamantanone, glass fiber, pineapple leaf fiber and hollow glass beads are also added.
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| CN112030660A (en) * | 2020-09-19 | 2020-12-04 | 王荃 | Construction method of anti-freezing pavement |
| CN112521762A (en) * | 2020-12-03 | 2021-03-19 | 安徽力聚投资集团有限公司 | Anti-freezing asphalt pavement material and preparation method thereof |
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| CN110965425B (en) | 2021-06-01 |
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