CN217651540U - Highway structure based on building rubbish recycled material - Google Patents
Highway structure based on building rubbish recycled material Download PDFInfo
- Publication number
- CN217651540U CN217651540U CN202221022994.3U CN202221022994U CN217651540U CN 217651540 U CN217651540 U CN 217651540U CN 202221022994 U CN202221022994 U CN 202221022994U CN 217651540 U CN217651540 U CN 217651540U
- Authority
- CN
- China
- Prior art keywords
- construction waste
- layer
- cement
- highway structure
- highway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model belongs to the technical field of highway pavement, and relates to a highway structure based on construction waste recycled materials, which comprises a roadbed, a subbase layer and a surface layer which are piled up in sequence from bottom to top; the subbase layer is a cement-stabilized construction waste regeneration material layer; the base layer is a cement-stabilized construction waste regeneration material layer. The utility model discloses a highway structure, intensity is high, the durability is good, stability is good, very big extension construction waste's application range increases the use amount, increases the utilization ratio.
Description
Technical Field
The utility model belongs to the technical field of the highway road surface, a highway structure based on building rubbish recycled material is related to.
Background
Along with the acceleration of the industrialization and urbanization processes, the construction industry is rapidly developed, the quantity of the Chinese construction waste is increased more than 1/3 of the total quantity of the municipal waste along with the increase of the quantity of the generated construction waste. The existing building garbage is mostly buried, and if the existing building garbage is not timely treated and utilized, adverse effects are certainly brought to the society, the environment and resources. In order to reduce environmental pollution and release land occupied by building garbage accumulation, the building garbage needs to be comprehensively utilized.
Through analysis, the waste sintered clay brick accounts for 70-75%, the concrete and mortar account for 20-25%, and other lightweight impurities such as wood floors, wood wall skirts, gypsum plasterboards, wall coverings and the like account for 1-5%; therefore, although it is proposed to use construction waste in a highway, and thus to realize resource utilization of construction waste, there are the following problems: (1) Because the construction waste is mostly demolished objects of a brick-concrete structure house, the composition is complex, and when the construction waste is used in projects with higher requirements such as concrete, pavement base course and the like, the utilization rate of the construction waste is low, and the application range is small; (2) The existing construction waste is generally used in a highway base section, the construction waste is mainly processed into coarse aggregate to replace 20-30% of natural crushed stone coarse aggregate for use, the use range and the use quantity are small, the purpose of large-scale use is not achieved, and the application of the construction waste is limited to a certain extent; (3) Because the building waste contains more bricks and mortar blocks (which can reach 40-80%), the materials have low strength and high crushing value (30-50%), the base layer strength is easy to reduce, early damage occurs, the durability is reduced, and the technical requirements of the strength, the rigidity, the stability and the like of the highway, especially the technical requirements of high-grade highways, can not be met; (4) The construction waste contains more soft particles such as cement paste and the like, and is easy to crush, so that the construction waste is easy to crack, and the use of the construction waste in high-altitude highways is greatly influenced.
SUMMERY OF THE UTILITY MODEL
To the technical problem that above-mentioned building rubbish utilization exists, the utility model provides a highway structure based on building rubbish recycled material, intensity is high, the durability is good, stability is good, satisfies high highway's technical requirement, greatly expands building rubbish's application range, increases operation rate.
In order to realize the purpose, the utility model discloses a technical scheme is:
a highway structure based on construction waste recycled materials comprises a roadbed, a subbase, a base layer and a surface layer which are sequentially piled up from bottom to top; the subbase layer is a cement-stabilized construction waste regeneration material layer.
Further, the base layer is a cement-stabilized construction waste regeneration material layer.
Further, the roadbed comprises embankments and road beds which are piled up from bottom to top; the road bed is in contact with the subbottom layer; the road bed is a construction waste regeneration material layer doped with cement.
Furthermore, the embankment is a graded construction waste regeneration material layer.
Further, the thickness of the underlayer is 20cm.
Further, the thickness of the base layer is 20-38cm.
Further, the thickness of the surface layer is 15-20cm.
The utility model has the advantages that:
1. the utility model provides a highway structure all contains the building rubbish reclaimed materials in its road bed, subbase, the basic unit, and the application range of very big extension building rubbish like this increases the use amount thereby improves building rubbish's utilization ratio, reduces the restriction factor when current building rubbish uses.
2. The utility model discloses in, the subbase is the graded construction waste regeneration bed of material of doping cement, and the cement doping volume is 3.5-6% in the subbase. The base layer is a cement-doped graded construction waste regeneration material layer, and the doping amount of cement in the base layer is 3.5-6%. The subbase layer and the base layer are doped with a small amount of cement, so that the strength of the highway structure is enhanced, the highway is stable, the durability is good, and the construction technical requirements specified for the highway are met, thereby expanding the application performance of the construction waste and improving the utilization rate.
3. The utility model discloses an among the highway structure, carry out the gradation to the building rubbish who utilizes for the bulk density of building rubbish reworked material is not less than 1100kg/m 3 The porosity of the construction waste recycled material is reduced, the recycled material is dense when stacked between road layers, is not easy to damage and sink, has good stability and high strength, and ensures the smoothness of the surface layer.
Drawings
Fig. 1 is a schematic structural view of a highway provided by the present invention;
wherein:
1-roadbed; 2-underlayment; 3-a base layer; 4-surface course.
Detailed Description
The present invention will now be described in detail with reference to the drawings and examples.
Examples
Referring to fig. 1, the highway structure based on construction waste recycled materials provided by the embodiment comprises a roadbed 1, a sub-base layer 2, a base layer 3 and a surface layer 4 which are stacked from bottom to top.
In this embodiment, the sub-base layer 2 is a cement-stabilized construction waste regeneration layer, the sub-base layer 2 is a layered structure formed by mixing a construction waste regeneration material and cement, and the doping mass of the cement accounts for 3.5%.
In this embodiment, the base layer 3 is a cement-stabilized construction waste regeneration layer. The base layer 3 is a laminated structure formed by mixing construction waste reclaimed materials and cement, and the doping mass of the cement accounts for 3.5%.
In the present embodiment, the roadbed 1 includes embankments and beds which are stacked from below to above; the road bed is contacted with the subbase layer 2; the embankment is a construction waste regeneration material layer; the road bed is a construction waste regeneration material layer doped with 1.5 percent (mass ratio) of cement.
In this example, 42.5 ordinary portland cement was used as the cement.
In this embodiment, the thickness of the underlayer 2 is 20cm, and the thickness of the base layer 3 is 20cm; the thickness of the face layer 4 was 15cm.
In this embodiment, the construction waste recycled material is formed by recycling construction waste. This is because the components of construction waste are complicated, and in order to improve the utilization thereof, it is necessary to regenerate the construction waste, and the regenerated construction waste is affected in particle size and density, and therefore, the regenerated construction waste is further graded to obtain a graded construction waste reclaimed material.
In the embodiment, the cement-stabilized construction waste recycled material is a layered structure formed by mixing graded construction waste recycled materials and cement, and the roadbed can meet the requirement by adding 1.5% (mass ratio) of cement into the directly recycled construction waste; the materials of the subbase layer 2 and the base layer 3 are cement doped in the recycled materials of the construction waste, thereby meeting the construction requirements.
In this embodiment, the building rubbish reclaimed materials include brick and tile aggregate, mortar and concrete piece, and the proportion of brick and tile class material among the building rubbish reclaimed materials all can have great influence to the bulk density of reclaimed materials to influence the crushing value of building rubbish reclaimed materials, produce the influence to the intensity on road surface. Therefore, the present example is to examine the crushing values of the construction waste recycled materials with different mass fractions, and the results are shown in table 1. The crush value is determined using existing measurement methods.
TABLE 1 crushing values of construction waste recyclables of different mass fractions
| Tile type (%) | Mortars (%) | Concrete type (%) | Crush value (%) |
| 5 | 0 | 95 | 24.7 |
| 10 | 0 | 90 | 27.3 |
| 20 | 0 | 80 | 27.2 |
| 30 | 20 | 50 | 35.7 |
| 40 | 30 | 30 | 44.5 |
| 50 | 30 | 20 | 44.8 |
| 60 | 30 | 10 | 45.9 |
| 70 | 20 | 10 | 45.1 |
| 80 | 20 | 0 | 47.4 |
| 90 | 10 | 0 | 47.1 |
| 100 | 0 | 0 | 46.2 |
As can be seen from table 1, the crushing value of the construction waste recycled material decreases with the increase of the concrete block content in the recycled material, and when the content of the brick and tile is more than 30%, the rate of decrease of the crushing value of the construction waste recycled material rapidly increases, and the crushing value of the crushed stone or gravel in the cement-stabilized soil is required according to the technical code of highway pavement base construction: the crushing value of the expressway or the first-level highway is not more than 30 percent, so the content of brick and tile in the construction waste recycled material is below 20 percent.
Furthermore, according to the screening result of the construction waste recycled material, the composition of the aggregate in the cement stabilized macadam mixture, the specification requirements on the aggregate in the specification of the highway asphalt pavement construction technical specification and the technical requirements on the particle composition of the construction waste recycled material, see table 2.
TABLE 2 granular composition of construction waste recycled material
According to the above requirements, the obtained building garbage reclaimed material has the bulk density of not less than 1100kg/m 3 The construction method meets the value specified by the technical requirement of highway construction, at the moment, the porosity of the construction waste recycled material is reduced, the recycled material is dense when being stacked between road layers, is not easy to damage and collapse, has good stability and high strength, and ensures the smoothness of the surface layer.
Example 2
Unlike example 1, in this example, the added mass ratio of cement in the cement-stabilized construction waste reclaimed material in each of the sub base layer 2 and the base layer 3 was 4.0%.
Example 3
Unlike example 1, in this example, the added mass ratio of cement in the cement-stabilized construction waste reclaimed material in each of the sub base layer 2 and the base layer 3 was 4.5%.
Example 4
Unlike example 1, in this example, the added mass ratio of cement in the cement-stabilized construction waste reclaimed material in the sub base layer 2 and the base layer 3 was 5.0%.
Example 5
Unlike example 1, in this example, the added mass ratio of cement in the cement-stabilized construction waste reclaimed material in each of the sub base layer 2 and the base layer 3 was 6.0%.
In the implementation, when the cement-stabilized construction waste recycled material layer is manufactured, the cement mixing proportion is provided according to the embodiment 1 to the embodiment 5, and the construction waste recycled material and the cement are mixed and then formed into a laminated structure through molding.
As the forming method comprises vibration compaction and heavy compaction, the two modes are considered.
In implementation, the cement mixing mass ratio is provided according to the embodiments 1 to 5, test blocks are obtained by adopting vibration compaction and heavy compaction methods respectively, and the unconfined compressive strength of 7 days is measured; see tables 2 and 3 for results.
TABLE 2 compressive strengths of different cement dosages (compaction by vibration)
TABLE 3 compressive Strength for different Cement dosages (heavy compaction)
As can be seen from tables 2 and 3, when the forming modes are different, the changes of the compressive strength and the splitting strength are increased along with the increase of the cement dosage, and when the cement dosage is 6%, the compressive strength of the test piece formed by the vibration compaction method can reach 9.2MPa, and the compressive strength of the test piece formed by the heavy compaction method can also reach 6.2MPa, which can meet the requirement of the highway strength specified in JTG-T-F20-2015-highway pavement base course construction technical rules.
In the above embodiment, the optimal thickness values of the base layer 3 and the surface layer 4 are given, the maximum thickness of the base layer 3 is not more than 38cm, and the maximum thickness of the surface layer 4 is not more than 20cm.
In summary, in the embodiment, the construction waste filler is regenerated and graded to obtain the construction waste recycled material, and the graded construction waste recycled material is mixed with cement and compacted to form the base layer and the sub-base layer; the regenerated construction waste and cement are mixed to serve as a roadbed of the roadbed, the regenerated construction waste serves as a embankment of the roadbed, a formed pavement structure meets the strength requirement of the expressway, the durability is good, the performance is stable, the utilization rate of the construction waste is improved, the waste resources are recycled, waste materials are changed into valuable materials, and the highway has good market value.
Claims (7)
1. A highway structure based on construction waste recycled materials is characterized by comprising a roadbed (1), a subbase (2), a base layer (3) and a surface layer (4) which are piled up from bottom to top in sequence; the subbase layer (2) is a cement-stabilized construction waste regeneration layer.
2. The construction waste reclamation material-based highway structure according to claim 1, wherein said base course (3) is a cement-stabilized construction waste reclamation layer.
3. The construction waste reclamation material-based highway structure according to claim 2, wherein the roadbed (1) comprises embankments and beds which are stacked from the bottom up; the road bed is in contact with the sub-base layer (2); the road bed is a construction waste regeneration material layer doped with cement.
4. The construction waste recycled material-based highway structure according to claim 3, wherein the embankment is a construction waste recycled material layer.
5. The construction waste reclamation material-based highway structure according to any one of claims 1-4, wherein the thickness of said sub-base layer (2) is 20cm.
6. The highway structure according to claim 5 wherein said base course (3) has a thickness ranging from 20 to 38cm.
7. The construction waste recycling material-based highway structure according to claim 6 wherein said facing layer (4) has a thickness of 15-20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221022994.3U CN217651540U (en) | 2022-04-29 | 2022-04-29 | Highway structure based on building rubbish recycled material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221022994.3U CN217651540U (en) | 2022-04-29 | 2022-04-29 | Highway structure based on building rubbish recycled material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217651540U true CN217651540U (en) | 2022-10-25 |
Family
ID=83664967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221022994.3U Active CN217651540U (en) | 2022-04-29 | 2022-04-29 | Highway structure based on building rubbish recycled material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217651540U (en) |
-
2022
- 2022-04-29 CN CN202221022994.3U patent/CN217651540U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103319121B (en) | Fluidic backfill material produced by building garbage fines and construction method | |
| CN101143774A (en) | Environmental protection energy-saving concrete brick | |
| CN108275936B (en) | Reclaimed sand powder green concrete and preparation method thereof | |
| CN106830777A (en) | Regeneration fill concrete and its application prepared by consumer waste incineration residue | |
| CN109111155B (en) | Pervious concrete system prepared from construction waste and preparation method thereof | |
| Sharma | Utilization of fly ash and waste ceramic in improving characteristics of clayey soil: a laboratory study | |
| CN104711974A (en) | Steel tube recycled concrete composite bearing base pile and manufacturing method thereof | |
| Fatima et al. | Use of ceramic waste as filler in semi-dense bituminous concrete | |
| CN109180081A (en) | Modified cement stabilized road base mixture of compound additive and preparation method thereof | |
| CN101250044A (en) | Road subbase course material and method for preparing same | |
| CN111393065A (en) | Construction solid waste regeneration composite roadbed filler and preparation method thereof | |
| Mulyono | Properties of pervious concrete with various types and sizes of aggregate | |
| EP3307687B1 (en) | Lightweight fine ceramic particulates | |
| CN217651540U (en) | Highway structure based on building rubbish recycled material | |
| CN205313932U (en) | Sub -surface structure | |
| Tran et al. | In-situ fine basalt soil reinforced by cement combined with additive dz33 to construct rural roads in gia lai province, vietnam | |
| CN114195439A (en) | Design method for mix proportion of high-doping-amount construction waste cement stabilized macadam | |
| CN114790087A (en) | Semi-rigid base layer raw material proportion design method for cement-stabilized steel slag | |
| CN205134120U (en) | Super thick cement stabilized macadam base | |
| CN212611780U (en) | Highway road surface structure that waste residue utilized | |
| Sarker | Use of Non-conventional Materials for the Construction of Low-volume Roads | |
| CN101250046A (en) | Foundation material and method for preparing same | |
| Hongjun et al. | Base Performances of Cement-Stabilized Magnesium Slag-Aeolian Sand Mixture. | |
| Gupta et al. | A study on the optimum moisture content and maximum dry density of sandy and clayey soil stabilized by copper tailings | |
| CN211522713U (en) | Road structure based on cement fly ash stabilizes full regeneration brick and mixes aggregate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |