CN116283080A - Cement stabilizing layer rapid repair material and preparation method and application thereof - Google Patents
Cement stabilizing layer rapid repair material and preparation method and application thereof Download PDFInfo
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- CN116283080A CN116283080A CN202310076978.5A CN202310076978A CN116283080A CN 116283080 A CN116283080 A CN 116283080A CN 202310076978 A CN202310076978 A CN 202310076978A CN 116283080 A CN116283080 A CN 116283080A
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- 239000000463 material Substances 0.000 title claims abstract description 103
- 239000004568 cement Substances 0.000 title claims abstract description 35
- 230000008439 repair process Effects 0.000 title claims abstract description 35
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 19
- 239000011230 binding agent Substances 0.000 claims description 9
- 230000036541 health Effects 0.000 claims description 8
- 238000010998 test method Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000007781 pre-processing Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 7
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 238000009411 base construction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004575 stone Substances 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
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
-
- 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
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides a cement stabilizing layer rapid repair material, a preparation method and application thereof. The road base reclaimed material and the rapid repair are combined, and the CGM high-strength shrinkage-free grouting material is used for replacing cement. Firstly, preprocessing the road base garbage to form road base reclaimed materials, and ensuring that the road base reclaimed materials reach the standard in grading; and adding CGM high-strength non-shrinkage grouting material and water to perform an unconfined compressive strength test and a dry shrinkage test of the cement stabilizing layer rapid repair material, and optimizing the mixing ratio according to the measurement result. Compared with the traditional repairing material, the repairing material has the advantages of environmental protection, high strength, quick traffic and the like.
Description
Technical Field
The invention relates to the technical field of highway engineering materials, in particular to a cement stabilizing layer rapid repair material and a preparation method and application thereof.
Background
The disclosure of this background section is only intended to increase the understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
With the rapid development of urban traffic, raw materials required by capital construction are gradually exhausted, and shortage of other raw materials such as sand and stone is a major difficulty in restricting the development of industry. At present, research and practical application of single recycling of waste building concrete and waste road asphalt concrete have been developed, and good economic and environmental benefits are obtained.
The damage of the road base is mainly caused by roadbed subsidence and binding material failure, and the original coarse and fine aggregates of the road base can still be utilized, so that the road base is feasible to be utilized after being crushed.
The cement stabilized base is a semi-rigid base structural type, has good mechanical properties and overall bearing capacity, and is widely applied to road base pavement.
However, there has been little research into the use of road base regrind for road repair. With the increasing amount of vehicles held, the road traffic in many cities has tended to saturate; this requires rapid road repair, minimizing the impact on citizens.
Disclosure of Invention
In order to solve the defects in the prior art, the invention combines the road base reclaimed material and the rapid repair, uses CGM high-strength shrinkage-free grouting material to replace cement, and provides a rapid repair material for a cement stabilizing layer, and a preparation method and application thereof. Compared with the traditional repairing material, the repairing material has the advantages of environmental protection, high strength, quick traffic and the like.
In a first aspect of the present invention, there is provided a method for preparing a rapid repair material for a cement stabilized layer, comprising the steps of pre-treating road base garbage to form a road base reclaimed material, and ensuring that the road base reclaimed material grading reaches the standard; adding CGM high-strength non-shrinkage grouting material and water, performing an unconfined compressive strength test and a dry shrinkage test of the cement stabilizing layer rapid repair material, and optimizing the mixing ratio according to the measurement result;
the optimized mixing ratio is the mass ratio, and the road base reclaimed material is as follows: CGM high-strength non-shrink grouting material: water = 1:0.2-0.3:0.12.
in a second aspect of the present invention, a rapid repair material for a cement stabilized layer is provided, and the rapid repair material is prepared according to the preparation method described above.
In a third aspect of the invention, the application of the cement stabilized layer rapid repair material in rapid road repair is provided.
The invention has the beneficial effects that:
the invention creatively combines the road base reclaimed material and the rapid repair, uses CGM high-strength shrinkage-free grouting material to replace cement, and provides a rapid repair material for a cement stabilizing layer, and a preparation method and application thereof. Compared with the traditional repairing material, the repairing material has the advantages of environmental protection, high strength, quick traffic and the like. So as to fully utilize the waste materials of the road base and realize the rapid repair of the road water stabilization layer.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 shows the unconfined compressive strength test of the rapid subgrade repair materials 1d, 2d, 3d of example 1 of the present invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In an exemplary embodiment of the present invention, a method for preparing a rapid repair material for a cement stabilized layer is provided, in which road base garbage is first pre-treated to form a road base reclaimed material, and the road base reclaimed material is ensured to reach the standard in gradation; adding CGM high-strength non-shrinkage grouting material and water, performing an unconfined compressive strength test and a dry shrinkage test of the cement stabilizing layer rapid repair material, and optimizing the mixing ratio according to the measurement result;
the optimized mixing ratio is the mass ratio, and the road base reclaimed material is as follows: CGM high-strength non-shrink grouting material: water = 1:0.2-0.3:0.12.
in some examples of this embodiment, the optimized blend ratio is a road base reclaimed material: CGM high-strength non-shrink grouting material: water = 1:0.2:0.12 or 1:0.3:0.12.
in some examples of this embodiment, the pretreatment is a crushing treatment of the road base waste to remove asphalt, soil, leaves, etc. impurities and form a road base reclaimed material.
In some examples of this embodiment, the roadway base waste is in an absolute dry state;
further, if road base refuse in an absolute dry state is not used, it is necessary to measure the water content of the road base reclaimed material; the water content measuring method is a drying method, a sand bath method or an alcohol method.
In some examples of this embodiment, the road base reclaimed material grading meets the DB37/T3577-2019 cement stabilized macadam base construction specification;
further, if the grading does not reach the standard, coarse and fine aggregates are added for blending, so that the grading is ensured to be in accordance with the construction technical specification of the DB37/T3577-2019 cement stabilized macadam base.
In some examples of this embodiment, the CGM high strength non-shrink grouting material is added in an amount of 20% -30% of the road base reclaimed material; the addition amount of water is 8-12% of the road base reclaimed material;
preferably, the water is added in an amount of 10%.
In some examples of this embodiment, standard health care is adopted after the CGM high-strength non-shrinkage grouting material and water are added, the humidity is not less than 95%, and the temperature is maintained at 2022 ℃.
In some examples of this embodiment, the unconfined compressive strength test and the dry shrinkage test are performed at standard health 1d, 2d, 3d in accordance with the specifications of the JTG E51-2009 highway engineering inorganic binder stabilization materials test protocol;
further, manufacturing a cylindrical test piece with the diameter of 150mm and the height of 150mm according to the specification of a test procedure of a JTG E51-2009 highway engineering inorganic binder stabilizing material, wherein the manufactured test piece adopts standard health maintenance, the humidity is more than or equal to 95%, and the temperature is maintained at 2022 ℃; performing an unconfined compressive strength test, performing a compressive test by using a press, and recording the maximum pressure when the test piece is damaged;
further, manufacturing a test piece according to the specification of the JTG E51-2009 road engineering inorganic binder stable material test procedure; the test piece is placed in a drying chamber, the temperature is 20 ℃ and 21 ℃, the relative humidity is 60 percent and 25 percent, and an automatic temperature and humidity recorder is arranged in the chamber and used for recording the temperature and humidity changes.
In another exemplary embodiment of the present invention, a rapid repair material for a cement stabilized layer is provided, and is prepared by the above preparation method.
In another exemplary embodiment of the present invention, there is provided the use of the cement stabilized layer rapid repair material described above in rapid road repair.
In order to enable those skilled in the art to more clearly understand the technical scheme of the present invention, the technical scheme of the present invention will be described in detail with reference to specific embodiments.
Example 1
In order to record water consumption conveniently and reduce test errors, the road base garbage pointed by the embodiment is in an absolute dry state, and the water content of the road base garbage is measured in practical application so as to optimize the mixing ratio.
And carrying out unconfined compressive strength experiments and dry shrinkage deformation experiments of 1d, 2d and 3d on the mixture to verify the performance of the mixture. The embodiment adopts CGM high-strength non-shrinkage grouting material, and the addition amount is about 20% -30% of the road base reclaimed material; the water addition amount is about 10% of the road base reclaimed material, the compact skeleton mineral aggregate structure is selected in the test, and the test age is 1d, 2d and 3d.
The method specifically comprises the following steps:
(1) The road base garbage comes from a certain road section, is crushed, and is removed with asphalt, soil, leaves and other impurities to form the road base reclaimed material
(2) The road base reclaimed materials are screened, the grading condition is checked, if the grading is not up to the standard, coarse and fine aggregates can be added for blending, and the good grading is ensured
According to the different mineral aggregate grading, the mixture is divided into three structural types of suspension compaction, skeleton compaction and skeleton clearance. The skeleton compact structure has the advantages of compact suspension structure and skeleton gap structure, and has good mechanical property, shrinkage resistance and scour resistance. Therefore, the experiment selects a skeleton compact structure. According to the grading requirements of cement stabilized macadam foundation construction technical Specification (DB 37/T3577-2019), the grading condition of the road foundation reclaimed materials is detected, if the grading is not up to the standard, coarse and fine aggregates can be added for blending, and the grading is ensured to be good. The grading conditions of the crushed road base garbage are shown in table 1, and the grading is good, so that extra coarse and fine aggregates are not required to be added.
TABLE 1 road base refuse grading calculation table after crushing
(3) Measuring the water content of the road base reclaimed material after the gradation is adjusted
The water content will determine the water consumption of the final mixture, and the water consumption will directly affect the performance of the mixture. According to the regulations of the test procedure of inorganic binder stabilization materials for highway engineering (JTG E51-2009), the measurement of the water content is carried out by a drying method, a sand bath method and an alcohol method, and the materials are selected according to engineering requirements. Because the road base waste employed in this example is in an absolute dry condition, no measurement is required here.
(4) Mix design
The embodiment adopts CGM high-strength non-shrinkage grouting material, and the addition amount is about 20% -30% of the road base reclaimed material; the water addition amount is about 10% of the road base reclaimed material, the compact skeleton mineral aggregate structure is selected in the test, and the test age is 1d, 2d and 3d.
The temperature is maintained at 20+ -2deg.C by standard health maintenance, i.e. humidity is 95% or more.
The embodiment designs 2 combination ratios and adopts mass ratio.
Scheme one: road base reclaimed material (in a dry state): CGM high-strength non-shrink grouting material: water = 1:0.3:0.12;
scheme II: road base reclaimed material (in a dry state): CGM high-strength non-shrink grouting material: water = 1:0.2:0.12.
(5) 1d, 2d, 3d unconfined compressive Strength test
The test was performed according to the rules of the test procedure for inorganic binder stabilization materials for highway engineering (JTG E51-2009), and the unconfined compressive strengths of 1d, 2d and 3d of each scheme were determined. The compression test was performed with a press and the maximum pressure at which the test piece was broken was recorded.
And (3) manufacturing a cylindrical test piece with the diameter of 150mm and the height of 150mm according to the specification, performing an unconfined compressive strength test, and maintaining the test piece at 20+/-2 ℃ by adopting standard health maintenance, namely, humidity being more than or equal to 95%. The results after processing the data by specification are shown in tables 2 and 3.
TABLE 2 protocol one Strength test results
Table 3 protocol two strength test results
The strength of the test piece is continuously improved along with the increase of the age; with the increase of the mixing amount of the CGM high-strength non-shrinkage grouting material, the strength of the test piece is continuously increased. The unconfined compressive strength of the two schemes 1d reaches more than 2Mpa, and the requirements of medium and light traffic on the strength of the base layer are basically met.
(6) 1d, 2d, 3d dry shrinkage test
Test pieces were prepared according to the rules of the highway engineering inorganic binder stabilization materials test procedure (JTG E51-2009). The product is placed in a drying chamber, the temperature of the drying chamber is controlled to be 20+/-1 ℃, and the relative humidity is controlled to be 60+/-5%. An automatic recorder for temperature and humidity is arranged in the room to record the change of temperature and humidity. Through detection, the first scheme and the second scheme hardly have shrinkage deformation, and meet the standard requirements.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The preparation method of the rapid repairing material for the cement stabilized layer is characterized in that the road base garbage is pretreated to form road base reclaimed materials, and the road base reclaimed materials are ensured to reach the standard in grading; adding CGM high-strength non-shrinkage grouting material and water, performing an unconfined compressive strength test and a dry shrinkage test of the cement stabilizing layer rapid repair material, and optimizing the mixing ratio according to the measurement result;
the optimized mixing ratio is the mass ratio, and the road base reclaimed material is as follows: CGM high-strength non-shrink grouting material: water = 1:0.2-0.3:0.12.
2. the method for preparing a rapid repair material for a cement stabilized layer according to claim 1, wherein the optimized blending ratio is a road base reclaimed material: CGM high-strength non-shrink grouting material: water = 1:0.2:0.12 or 1:0.3:0.12.
3. the method for preparing a rapid repairing material for a cement stabilized layer according to claim 1, wherein the pretreatment is to crush road base garbage and remove impurities such as asphalt, soil, leaves and the like to form road base reclaimed materials.
4. The method for preparing a rapid repair material for a cement stabilized layer according to claim 1, wherein the road base waste is in an absolute dry state;
further, if road base refuse in an absolute dry state is not used, it is necessary to measure the water content of the road base reclaimed material; the water content measuring method is a drying method, a sand bath method or an alcohol method.
5. The method for preparing the rapid repair material for the cement stabilized layer according to claim 1, wherein the road base reclaimed material grading reaches the standard of meeting the construction technical specification of a DB37/T3577-2019 cement stabilized macadam base;
further, if the grading does not reach the standard, coarse and fine aggregates are added for blending, so that the grading is ensured to be in accordance with the construction technical specification of the DB37/T3577-2019 cement stabilized macadam base.
6. The method for preparing a rapid repair material for a cement stabilized layer according to claim 1, wherein the addition amount of the CGM high-strength non-shrinkage grouting material is 20% -30% of the road base reclaimed material; the addition amount of water is 8-12% of the road base reclaimed material;
preferably, the water is added in an amount of 10%.
7. The method for preparing a rapid repair material for a cement stabilized layer according to claim 6, wherein after the CGM high-strength non-shrinkage grouting material and water are added, standard health maintenance is adopted, the humidity is more than or equal to 95%, and the temperature is maintained at 2022 ℃.
8. The method for preparing a rapid repair material for a cement stabilized layer according to claim 1, wherein the unconfined compressive strength test and the dry shrinkage test are carried out according to the specification of the test procedure of the inorganic binder stabilizing material for highway engineering JTG E51-2009 under the conditions of standard health maintenance of 1d, 2d and 3 d;
further, manufacturing a cylindrical test piece with the diameter of 150mm and the height of 150mm according to the specification of a test procedure of a JTG E51-2009 highway engineering inorganic binder stabilizing material, wherein the manufactured test piece adopts standard health maintenance, the humidity is more than or equal to 95%, and the temperature is maintained at 2022 ℃; performing an unconfined compressive strength test, performing a compressive test by using a press, and recording the maximum pressure when the test piece is damaged;
further, manufacturing a test piece according to the specification of the JTG E51-2009 road engineering inorganic binder stable material test procedure; the test piece is placed in a drying chamber, the temperature is 20 ℃ and 21 ℃, the relative humidity is 60 percent and 25 percent, and an automatic temperature and humidity recorder is arranged in the chamber and used for recording the temperature and humidity changes.
9. A rapid repair material for a cement stabilized layer, which is prepared by the method of claims 1-8.
10. The use of a cement stabilized layer rapid repair material as defined in claim 9 in rapid road repair.
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CN102261034A (en) * | 2011-06-22 | 2011-11-30 | 张学 | Construction process for repairing concrete ground |
CN104276803A (en) * | 2014-09-20 | 2015-01-14 | 山西三江工程检测有限公司 | Shrinkage-free high-strength pouring mortar material and preparation method thereof |
CN105084820A (en) * | 2015-08-10 | 2015-11-25 | 湖北益通建设股份有限公司 | Method for preparing cement-stabilized macadam material through waste concrete |
CN107265892A (en) * | 2017-06-22 | 2017-10-20 | 东南大学 | It is a kind of that the cement concrete pavement of damage is regenerated to the method to form roadbase |
CN108863190A (en) * | 2018-08-08 | 2018-11-23 | 上海市建筑科学研究院 | A kind of semi-rigid Asphalt Pavement Base patching material semi-flexible |
JP2021063333A (en) * | 2019-10-10 | 2021-04-22 | 日鉄テックスエンジ株式会社 | Repairing method of concrete structure used in high temperature region |
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2023
- 2023-01-29 CN CN202310076978.5A patent/CN116283080A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102261034A (en) * | 2011-06-22 | 2011-11-30 | 张学 | Construction process for repairing concrete ground |
CN104276803A (en) * | 2014-09-20 | 2015-01-14 | 山西三江工程检测有限公司 | Shrinkage-free high-strength pouring mortar material and preparation method thereof |
CN105084820A (en) * | 2015-08-10 | 2015-11-25 | 湖北益通建设股份有限公司 | Method for preparing cement-stabilized macadam material through waste concrete |
CN107265892A (en) * | 2017-06-22 | 2017-10-20 | 东南大学 | It is a kind of that the cement concrete pavement of damage is regenerated to the method to form roadbase |
CN108863190A (en) * | 2018-08-08 | 2018-11-23 | 上海市建筑科学研究院 | A kind of semi-rigid Asphalt Pavement Base patching material semi-flexible |
JP2021063333A (en) * | 2019-10-10 | 2021-04-22 | 日鉄テックスエンジ株式会社 | Repairing method of concrete structure used in high temperature region |
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