CN113501689A - Large-particle-size cement stabilized macadam and method thereof - Google Patents
Large-particle-size cement stabilized macadam and method thereof Download PDFInfo
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- CN113501689A CN113501689A CN202110656752.3A CN202110656752A CN113501689A CN 113501689 A CN113501689 A CN 113501689A CN 202110656752 A CN202110656752 A CN 202110656752A CN 113501689 A CN113501689 A CN 113501689A
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- 239000004568 cement Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000004575 stone Substances 0.000 claims abstract description 51
- 239000002245 particle Substances 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 239000012615 aggregate Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000003203 everyday effect Effects 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 238000005056 compaction Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003805 vibration mixing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009411 base construction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/48—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected by vibrations
-
- 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
- E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
-
- 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
- E01C3/04—Foundations produced by soil stabilisation
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a large-particle size cement stabilized macadam and a method thereof, wherein the large-particle size cement stabilized macadam comprises the following components in parts by weight: 25-35 parts of first crushed stone; 20-30 parts of second crushed stone; 15-25 parts of third crushed stone; 20-30 parts of stone chips; 1-8 parts of cement; 1-8 parts of water, wherein the particle size of the first crushed stone is 19-37.5mm, the particle size of the second crushed stone is 9.6-19mm, and the particle size of the third crushed stone is 4.75-9.5 mm; the method comprises the steps of S1, preparing raw materials of broken stone, stone chips, cement and water; s2, mixing the mixture; before formal mixing, firstly debugging mixing equipment for trial mixing to ensure that the particle composition and the water content of the mixture meet the specified requirements; checking the moisture content of the aggregate before mixing every day, calculating the construction mix proportion of the day, classifying and placing the various materials prepared in the step S1 into various bins according to the mix proportion, and controlling the mix proportion of the various materials through the bins; firstly, mixing coarse aggregates, fine aggregates, cement and water in all the bins in proportion in a mixing bin; s3, vibrating and molding the vibrating and stirring cylinder, and finally discharging through a conveying belt; the invention provides a cement stabilized macadam with low cost, high strength, crack resistance and freeze resistance and a method.
Description
Technical Field
The invention relates to the technical field of cement stabilized macadam, in particular to large-particle size cement stabilized macadam and a method thereof.
Background
With the continuous development of economic construction in China, the traffic bearing capacity of urban roads in China is continuously increased, vehicles passing through the roads are increased day by day, and the requirements on the construction quality and the bearing capacity of the roads are also continuously improved. Meanwhile, various requirements on the road service performance are gradually improved, and cement stabilized macadam is usually selected as a main construction method of the project in the process of road base construction.
The cement stabilized macadam takes graded macadam as aggregate, adopts a certain amount of cementing materials and enough mortar volume to fill the gap of the aggregate, and is paved and compacted according to the embedding and extruding principle. The compactness of the mortar is close to the compactness, the strength mainly depends on the embedding, extruding and locking principles among the gravels, and simultaneously, the mortar has enough volume to fill the gaps of the aggregate. Its initial strength is high, and its strength can be quickly increased with age, and can be quickly formed into plate body, so that it has high strength, and good impermeability and frost resistance.
At present, the national standard of road structure layers in highway specifications is correspondingly improved and enhanced, but the maximum grain size of the cement stabilized macadam aggregate is still limited not to exceed 31.5 mm.
In conclusion, the prior art also lacks a cement stabilized macadam which has low cost, high strength, crack resistance and freezing resistance and a method thereof.
Disclosure of Invention
The invention provides a cement stabilized macadam with low cost, high strength, crack resistance and freeze resistance and a method.
To achieve the purpose, the invention provides the following technical scheme:
the invention provides a large-particle size cement stabilized macadam in a first aspect, which comprises the following components in parts by weight:
wherein the grain diameter of the first crushed stone is 19-37.5mm, the grain diameter of the second crushed stone is 9.6-19mm, and the grain diameter of the third crushed stone is 4.75-9.5 mm.
Preferably, the large-particle size cement stabilized macadam comprises the following components in parts by weight:
wherein the grain diameter of the first crushed stone is 19-37.5mm, the grain diameter of the second crushed stone is 9.6-19mm, and the grain diameter of the third crushed stone is 4.75-9.5 mm.
Preferably, the cement is Pfo 42.5 cement.
Preferably, the apparent density of the stone chips is not less than 2.6t/m3The sand equivalent is not less than 55%.
In a second aspect of the invention, a preparation method of a large-particle size cement stabilized macadam is provided, which comprises the following steps:
s1, preparing raw materials of broken stone, stone chips, cement and water;
s2, mixing the mixture; before formal mixing, firstly debugging mixing equipment for trial mixing to ensure that the particle composition and the water content of the mixture meet the specified requirements; checking the moisture content of the aggregate before mixing every day, calculating the construction mix proportion of the day, classifying and placing the various materials prepared in the step S1 into various bins according to the mix proportion, and controlling the mix proportion of the various materials through the bins; firstly, mixing coarse aggregates, fine aggregates, cement and water in all the bins in proportion in a mixing bin;
and S3, vibrating and molding the vibrating and stirring cylinder, and finally discharging through a conveying belt.
Preferably, the vibration molding time of step S3 is 30-50S. The materials are better mixed after being vibrated by the vibration mixing cylinder, and the paving and rolling effects are better in the later use process.
Preferably, the large-particle size cement stabilized macadam comprises the following components in parts by weight:
wherein the grain diameter of the first crushed stone is 19-37.5mm, the grain diameter of the second crushed stone is 9.6-19mm, and the grain diameter of the third crushed stone is 4.75-9.5 mm.
Preferably, the large-particle size cement stabilized macadam comprises the following components in parts by weight:
wherein the grain diameter of the first crushed stone is 19-37.5mm, the grain diameter of the second crushed stone is 9.6-19mm, and the grain diameter of the third crushed stone is 4.75-9.5 mm.
Preferably, the cement is Pfo 42.5 cement.
Preferably, the apparent density of the stone chips is not less than 2.6t/m3The sand equivalent is not less than 55%.
In a third aspect of the present invention, there is provided a method for road construction using large-particle size cement stabilized macadam, comprising the steps of:
s1, performing static pressure for the first time, wherein the rubber-tyred roller is in front, the vibratory roller is subjected to static pressure for the second time, the static pressure overlap is 1/2 steel wheel width, and the speed is 1.5-1.7 km/h;
s2, carrying out weak vibration for the 2 nd pass, and adopting a 22t vibratory roller, wherein the overlapping amount is 1/2 vibratory roller width, and the speed is 1.8-2.2 km/h;
s3, carrying out 3-5 times of strong vibration, and carrying out vibration rolling by adopting a 22t vibration roller, wherein the overlapping amount is 1/2 of vibration rolling width, and the speed is 1.8-2.2 km/h;
s4, detecting the compaction degree after the third strong vibration pass, and if the compaction degree is unqualified, detecting the compaction degree once every rolling pass until the compaction degree meets the design requirement;
s5, adopting a 22t vibration roller for the 6 th weak vibration, wherein the overlapping amount is 1/2 vibration roller width, and the speed is 1.8-2.2 km/h;
and S6, collecting light for the 7 th time, and adopting a rubber-tyred roller to perform static pressure surface collection at the speed of 1.5-1.7 km/h.
Preferably, the large-particle size cement stabilized macadam comprises the following components in parts by weight:
wherein the grain diameter of the first crushed stone is 19-37.5mm, the grain diameter of the second crushed stone is 9.6-19mm, and the grain diameter of the third crushed stone is 4.75-9.5 mm.
Preferably, the large-particle size cement stabilized macadam comprises the following components in parts by weight:
wherein the grain diameter of the first crushed stone is 19-37.5mm, the grain diameter of the second crushed stone is 9.6-19mm, and the grain diameter of the third crushed stone is 4.75-9.5 mm.
Preferably, the cement is Pfo 42.5 cement.
Preferably, the apparent density of the stone chips is not less than 2.6t/m3The sand equivalent is not less than 55%.
Compared with the prior art, the invention has the beneficial effects and remarkable progresses that: the first crushed stone with larger particle size is 19-37.5mm (exceeding 31.5mm of the national standard), the compressive strength of the finished cement stabilized crushed stone is basically consistent with that of C15 concrete, but the cost is lower; compared with the conventional cement stabilized macadam, the cement stabilized macadam has the advantages of larger aggregate particle size, stronger antifreezing performance and more stable structure, can effectively prevent water from flowing into a roadbed, and prolongs the service life of the roadbed. In addition, the cement stabilized macadam is formed by adding the vibration mixing cylinder in the production process, the compaction effect is enhanced, in addition, the grain size of the coarse aggregate in the cement stabilized macadam is increased, the strength is enhanced, the compressive strength, the crack resistance and the anti-freezing performance of a road pavement structure layer can be greatly improved, the structure is stable, water can be effectively prevented from flowing into a roadbed, and the service life of the roadbed is prolonged.
Drawings
To more clearly illustrate the technical solution of the present invention, the drawings required for the embodiment of the present invention will be briefly described below.
It should be apparent that the drawings in the following description are only drawings of some embodiments of the invention, and that other drawings can be obtained by those skilled in the art without inventive exercise, and the other drawings also belong to the drawings required by the embodiments of the invention.
Fig. 1 is a flow chart of preparation and construction of a large-particle size cement stabilized macadam according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions, advantageous effects and significant progress of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings provided in the embodiments of the present invention.
It is to be understood that all of the described embodiments are merely some, and not all, embodiments of the invention; 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.
It should be further noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
The technical means of the present invention will be described in detail below with specific examples.
Example 1
The cement stabilized macadam with the particle size of the embodiment 1 comprises the following raw materials in parts by weight:
wherein the grain size of the first crushed stone is 25mm, the grain size of the second crushed stone is 15mm, and the grain size of the third crushed stone is 7 mm.
Example 2
The cement stabilized macadam with the particle size of the embodiment 2 comprises the following raw materials in parts by weight:
wherein the grain diameter of the first crushed stone is 19mm, the grain diameter of the second crushed stone is 9.6mm, and the grain diameter of the third crushed stone is 4.75 mm.
Example 3
The cement stabilized macadam with the particle size of the embodiment 3 comprises the following raw materials in parts by weight:
wherein the grain diameter of the first crushed stone is 37.5mm, the grain diameter of the second crushed stone is 19mm, and the grain diameter of the third crushed stone is 9.5 mm.
Example 4
As shown in fig. 1, a flow chart of preparation and construction of a large-particle size cement stabilized macadam is shown, which comprises the following steps:
s1, selecting raw materials;
s2, designing the mixing ratio;
s3, mixing the mixture;
s4, spreading and rolling;
and S5, maintaining and detecting.
In this example, the raw material grade mixing ratio of step S1 and step S2 were designed and selected from the raw materials and the mixing ratio of the cement stabilized macadam with the particle size of examples 1-3.
In this embodiment, step S3 specifically includes: before formal mixing, firstly debugging mixing equipment for trial mixing to ensure that the particle composition and the water content of the mixture meet the specified requirements; and (4) checking the moisture content of the aggregate before mixing every day, and calculating the construction mix proportion of the day. The selected materials are classified and placed into various bins according to the mixing proportion, and the mixing proportion of the materials is controlled through the bins; the coarse aggregate, the fine aggregate, the cement and the water in the bins are mixed in the mixing bin according to a proportion, then enter the vibration mixing cylinder for vibration molding for 30s, and finally are discharged through a transmission belt.
In this embodiment, step S4 specifically includes: after discharging, timely detecting various parameters of the mixture, and making a test block; and after no problem, the concrete is conveyed to a construction site for spreading and rolling forming. The designed paving thickness of a construction site is 18cm, the loose paving coefficient is 1.3, and the on-site loose paving thickness is 23.4 cm. Static pressure of 1 st time, the rubber-tyred roller is in front, the vibratory roller is in each static pressure of the rear time, the static pressure overlap is 1/2 steel wheel width, and the speed is 1.5-1.7 km/h; weak vibration of 2 nd pass, adopting a 22t vibratory roller, wherein the overlapping amount is 1/2 vibratory roller width, and the speed is 1.8-2.2 km/h; carrying out strong vibration for 3-5 times, carrying out vibration rolling by adopting a 22t vibration roller, wherein the overlapping amount is 1/2 vibration rolling width, the speed is 1.8-2.2km/h, detecting the compaction degree after the strong vibration for the third time, and detecting the compaction degree once every time of rolling if the compaction degree is unqualified until the compaction degree reaches the design requirement; adopting a 22t vibratory roller for weak vibration of the 6 th time, wherein the overlapping amount is 1/2 vibratory roller width, and the speed is 1.8-2.2 km/h; and 7, light collection, construction method: and (3) adopting a rubber-tyred road roller to perform static pressure surface rolling at the speed of 1.5-1.7 km/h.
In this embodiment, step S5 specifically includes: after vibration molding, the covering health-preserving cloth is adopted for moisture preservation and health preservation in time, the traffic is closed during the health preservation, and cement-stabilized macadam can not pass any vehicle except for a sprinkler. Generally, a core drilling machine can be used for taking out a complete core sample after 3 to 7 days, and a crushing test can be carried out after the core sample is cut to detect the strength of the water-stable macadam.
The road pavement structure layer of the finally prepared cement stabilized macadam has the advantages of compressive strength, crack resistance, freezing resistance and stable structure, can effectively prevent water from flowing into a roadbed, and prolongs the service life of the roadbed.
During the description of the above description:
the description of the terms "this embodiment," "an embodiment of the invention," "as shown at … …," "further improved technical solution," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention; in this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example, and the particular features, structures, materials, or characteristics described, etc., may be combined or brought together in any suitable manner in any one or more embodiments or examples; furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that:
the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same;
although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made, and equivalents may be substituted for elements thereof without departing from the scope of the embodiments of the present invention.
Claims (7)
1. The large-particle size cement stabilized macadam is characterized by comprising the following components in parts by weight:
wherein the grain diameter of the first crushed stone is 19-37.5mm, the grain diameter of the second crushed stone is 9.6-19mm, and the grain diameter of the third crushed stone is 4.75-9.5 mm.
2. The large-particle size cement stabilized macadam of claim 1, comprising the following components in parts by weight:
wherein the grain diameter of the first crushed stone is 19-37.5mm, the grain diameter of the second crushed stone is 9.6-19mm, and the grain diameter of the third crushed stone is 4.75-9.5 mm.
3. A large particle size cement stabilized macadam according to claim 1 or claim 2, wherein the cement is o 42.5 cement.
4. A large particle size cement stabilized macadam according to claim 1 or claim 2 in which the apparent density of the said ballast is not less than 2.6t/m3The sand equivalent is not less than 55%.
5. The preparation method of the large-particle size cement stabilized macadam is characterized by comprising the following steps of:
s1, preparing raw materials of broken stone, stone chips, cement and water according to any one of claims 1 to 4;
s2, mixing the mixture; before formal mixing, firstly debugging mixing equipment for trial mixing to ensure that the particle composition and the water content of the mixture meet the specified requirements; checking the moisture content of the aggregate before mixing every day, calculating the construction mix proportion of the day, classifying and placing the various materials prepared in the step S1 into various bins according to the mix proportion, and controlling the mix proportion of the various materials through the bins; firstly, mixing coarse aggregates, fine aggregates, cement and water in all the bins in proportion in a mixing bin;
and S3, vibrating and molding the vibrating and stirring cylinder, and finally discharging through a conveying belt.
6. The method for preparing cement stabilized macadam having a large particle size according to claim 5, wherein the vibromolding time of step S3 is 30-50S.
7. A method of road construction using the large particle size cement stabilized macadam of any one of claims 1 to 4, comprising the steps of:
s1, performing static pressure for the first time, wherein the rubber-tyred roller is in front, the vibratory roller is subjected to static pressure for the second time, the static pressure overlap is 1/2 steel wheel width, and the speed is 1.5-1.7 km/h;
s2, carrying out weak vibration for the 2 nd pass, and adopting a 22t vibratory roller, wherein the overlapping amount is 1/2 vibratory roller width, and the speed is 1.8-2.2 km/h;
s3, carrying out 3-5 times of strong vibration, and carrying out vibration rolling by adopting a 22t vibration roller, wherein the overlapping amount is 1/2 of vibration rolling width, and the speed is 1.8-2.2 km/h;
s4, detecting the compaction degree after the third strong vibration pass, and if the compaction degree is unqualified, detecting the compaction degree once every rolling pass until the compaction degree meets the design requirement;
s5, carrying out weak vibration for the 6 th time, and adopting a 22t vibratory roller, wherein the overlapping amount is 1/2 vibratory roller width, and the speed is 1.8-2.2 km/h;
and S6, collecting light for the 7 th time, and adopting a rubber-tyred roller to perform static pressure surface collection at the speed of 1.5-1.7 km/h.
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| CN202110656752.3A CN113501689A (en) | 2021-06-11 | 2021-06-11 | Large-particle-size cement stabilized macadam and method thereof |
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| CN202110656752.3A CN113501689A (en) | 2021-06-11 | 2021-06-11 | Large-particle-size cement stabilized macadam and method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131753A (en) * | 2021-12-06 | 2022-03-04 | 湖南科技大学 | Utilize road bed construction equipment of gangue compounding |
| CN115368046A (en) * | 2022-03-15 | 2022-11-22 | 长安大学 | Large-particle-size CTB-50 cement stabilized macadam grading design method |
-
2021
- 2021-06-11 CN CN202110656752.3A patent/CN113501689A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131753A (en) * | 2021-12-06 | 2022-03-04 | 湖南科技大学 | Utilize road bed construction equipment of gangue compounding |
| CN115368046A (en) * | 2022-03-15 | 2022-11-22 | 长安大学 | Large-particle-size CTB-50 cement stabilized macadam grading design method |
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