CN115677309A - Composite roadbed material prepared from construction waste and preparation method thereof - Google Patents
Composite roadbed material prepared from construction waste and preparation method thereof Download PDFInfo
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- CN115677309A CN115677309A CN202211434366.0A CN202211434366A CN115677309A CN 115677309 A CN115677309 A CN 115677309A CN 202211434366 A CN202211434366 A CN 202211434366A CN 115677309 A CN115677309 A CN 115677309A
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- 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 discloses a composite roadbed material prepared from construction waste and a preparation method thereof, wherein the composite roadbed material is prepared from the following raw materials: the building waste aggregate comprises building waste fine aggregate, building waste coarse aggregate, building waste powder, waste lime powder, pumicite particles, slag powder, glass fiber, desulfurized gypsum and water. The invention utilizes the crushed construction waste as the roadbed raw material, saves the environmental cost and the labor cost when the construction waste is treated, has low cost when being used as the renewable road building raw material, and reduces the using amount of soil and stones. Building garbage fine aggregate, building garbage coarse aggregate and building garbage powder are added, crushed fine materials generated in the crushing process of the building garbage are effectively utilized, the utilization rate of the building garbage is greatly improved, and building garbage aggregates with different particle sizes are mixed for use, so that gaps among raw materials are reduced, and the integral compactness is improved; waste lime powder and desulfurized gypsum are added to serve as adhesives of the roadbed material, so that the integrity of the roadbed material is improved, and cracking and other conditions are prevented.
Description
Technical Field
The invention relates to the technical field of construction waste treatment, in particular to a composite roadbed material prepared from construction waste and a preparation method thereof.
Background
In the modern construction process of cities, a large amount of construction waste is generated, the construction waste mainly comprises waste concrete, waste mortar, waste masonry, waste wood and the like, most of the construction waste is not treated at all and is transported to the outsides or the peripheries of the cities for simple landfill or open stockpiling, and the treatment method not only needs to occupy a large amount of land, but also damages the soil structure and causes surface settlement; in addition, the construction waste contains harmful heavy metal elements and high molecular polymers, which can cause serious environmental pollution and directly harm the lives of surrounding residents, so that the construction waste needs to be subjected to resource treatment, and the recyclable part is recycled. The kilometer mileage of China is continuously increased, a large amount of building materials are needed when roads are built, and if the building materials are treated and then applied to the road construction, the method is a good method for killing two birds with one stone.
The natural roadbed materials adopted in roadbed engineering are massively exploited and applied, so that a large amount of mountains and vegetation are destroyed, water and soil are lost, a large amount of resources are wasted, a large amount of greenhouse gases are released, the greenhouse effect is aggravated, the natural road building materials are gradually in shortage, the road building cost is increased year by year, and the contradiction between insufficient engineering investment and continuous rising of the cost is aggravated, so that the composite roadbed material prepared by the construction waste with low cost and performance which is not output to the natural materials and the preparation method thereof are provided.
Disclosure of Invention
The invention aims to overcome the existing defects and provides a composite roadbed material prepared from construction waste and a preparation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme: a composite roadbed material prepared from construction waste comprises the following raw materials: the building waste aggregate comprises building waste fine aggregate, building waste coarse aggregate, building waste powder, waste lime powder, pumicite particles, slag powder, glass fiber, desulfurized gypsum and water.
Furthermore, the particle size of the construction waste fine aggregate is 6-12mm, the particle size of the construction waste coarse aggregate is 20-40mm, and the particle size of the construction waste powder is 1-3mm.
Furthermore, the particle size of the waste lime powder is 5-8mm.
Furthermore, the grain diameter of the slag powder is 8-13mm.
Further, the composite roadbed material prepared from the construction waste comprises the following raw materials in parts by weight: 22-28 parts of construction waste fine aggregate, 35-46 parts of construction waste coarse aggregate, 13-18 parts of construction waste powder, 10-14 parts of waste lime powder, 7-10 parts of pumicite particles, 8-12 parts of slag powder, 3-6 parts of glass fiber, 3-7 parts of desulfurized gypsum and 8-12 parts of water.
Further, the composite roadbed material prepared from the construction waste comprises the following raw materials in parts by weight: 22 parts of construction waste fine aggregate, 43 parts of construction waste coarse aggregate, 14 parts of construction waste powder, 14 parts of waste lime powder, 8 parts of pumice particles, 12 parts of slag powder, 4 parts of glass fiber, 7 parts of desulfurized gypsum and 11 parts of water.
Further, the composite roadbed material prepared from the construction waste comprises the following raw materials in parts by weight: 25 parts of construction waste fine aggregate, 40 parts of construction waste coarse aggregate, 15 parts of construction waste powder, 12 parts of waste lime powder, 9 parts of pumice volcanic particles, 10 parts of slag powder, 5 parts of glass fiber, 6 parts of desulfurized gypsum and 10 parts of water.
Further, the composite roadbed material prepared from the construction waste comprises the following raw materials in parts by weight: 27 parts of construction waste fine aggregate, 38 parts of construction waste coarse aggregate, 17 parts of construction waste powder, 11 parts of waste lime powder, 10 parts of pumice volcanic particles, 8 parts of slag powder, 6 parts of glass fiber, 4 parts of desulfurized gypsum and 9 parts of water.
A preparation method of a composite roadbed material prepared from construction waste comprises the steps of adding water into construction waste fine aggregate, construction waste coarse aggregate, construction waste powder, waste lime powder, pumicite particles, slag powder, glass fiber and desulfurized gypsum, uniformly stirring, and then paving.
Compared with the prior art, the invention has the beneficial effects that: the composite roadbed material prepared from the construction waste and the preparation method thereof have the following advantages:
1. the construction waste is crushed and then is reused as a roadbed raw material, so that the environmental cost and the labor cost in the construction waste treatment are saved, and the construction waste is used as a renewable road building raw material, so that the cost is low, and the use amount of soil and stones is reduced.
2. The construction waste fine aggregate, the construction waste coarse aggregate and the construction waste powder are added, the crushed fine materials generated in the construction waste crushing process are effectively utilized, the utilization rate of the construction waste is greatly improved, and the construction waste aggregates with different particle sizes are mixed for use, so that the gaps among the raw materials are reduced, and the overall compactness is improved; waste lime powder and desulfurized gypsum are added to serve as adhesives of the roadbed material, so that the integrity of the roadbed material is improved, and cracking and other conditions are prevented.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The invention provides the following technical scheme:
a composite roadbed material prepared from construction waste comprises the following raw materials: the building waste aggregate comprises building waste fine aggregate, building waste coarse aggregate, building waste powder, waste lime powder, pumicite particles, slag powder, glass fiber, desulfurized gypsum and water.
Wherein the grain diameter of the slag powder is 8-13mm, the grain diameter of the construction waste fine aggregate is 6-12mm, the grain diameter of the construction waste coarse aggregate is 20-40mm, the grain diameters of the construction waste powder are 1-3mm, and the grain diameter of the waste lime powder is 5-8mm.
Example 1:
a composite roadbed material prepared from construction waste comprises the following raw materials in parts by weight: 22 parts of construction waste fine aggregate, 43 parts of construction waste coarse aggregate, 14 parts of construction waste powder, 14 parts of waste lime powder, 8 parts of pumicite particles, 12 parts of slag powder, 4 parts of glass fiber, 7 parts of desulfurized gypsum and 11 parts of water.
The preparation method of the composite roadbed material prepared from the construction waste in the embodiment 1 comprises the steps of adding water into construction waste fine aggregate, construction waste coarse aggregate, construction waste powder, waste lime powder, pumice particles, slag powder, glass fiber and desulfurized gypsum, stirring uniformly, and paving.
Example 2:
a composite roadbed material prepared from construction waste comprises the following raw materials in parts by weight: 25 parts of construction waste fine aggregate, 40 parts of construction waste coarse aggregate, 15 parts of construction waste powder, 12 parts of waste lime powder, 9 parts of pumicite particles, 10 parts of slag powder, 5 parts of glass fiber, 6 parts of desulfurized gypsum and 10 parts of water.
The preparation method of the composite roadbed material prepared from the construction waste in the embodiment 2 is characterized in that during construction, the construction waste fine aggregate, the construction waste coarse aggregate, the construction waste powder, the waste lime powder, the pumicite particles, the slag powder, the glass fiber and the desulfurized gypsum are added with water and uniformly stirred, and then the mixture is laid.
Example 3:
a composite roadbed material prepared from construction waste comprises the following raw materials in parts by weight: 27 parts of construction waste fine aggregate, 38 parts of construction waste coarse aggregate, 17 parts of construction waste powder, 11 parts of waste lime powder, 10 parts of pumice volcanic particles, 8 parts of slag powder, 6 parts of glass fiber, 4 parts of desulfurized gypsum and 9 parts of water.
The method for preparing a composite roadbed material from construction waste in the embodiment 3 includes adding water into construction waste fine aggregate, construction waste coarse aggregate, construction waste powder, waste lime powder, pumicite particles, slag powder, glass fiber and desulfurized gypsum, stirring uniformly, and paving.
Comparative example 1
A composite roadbed material prepared from construction waste comprises the following raw materials in parts by weight: 25 parts of common stone, 40 parts of construction waste coarse aggregate, 15 parts of construction waste powder, 12 parts of waste lime powder, 9 parts of pumice volcanic particles, 10 parts of slag powder, 5 parts of glass fiber, 6 parts of desulfurized gypsum and 10 parts of water.
Compared with the example 2, the comparative example 1 does not contain the construction waste fine aggregate, replaces the common stones, and does not change other components.
Comparative example 2
A composite roadbed material prepared from construction waste comprises the following raw materials in parts by weight: 25 parts of construction waste fine aggregate, 40 parts of construction waste coarse aggregate, 15 parts of construction waste powder, 12 parts of waste lime powder, 9 parts of pumicite particles, 10 parts of slag powder, 5 parts of glass fiber, 6 parts of desulfurized gypsum and 10 parts of water.
Compared with the example 2, the concrete does not contain the building waste coarse aggregate, the substitute is common stone, and other components are unchanged.
Test examples
The composite roadbed materials prepared in the embodiments 1-3 and the comparative examples 1-2 are paved on the upper part of a soil roadbed, compacted and molded by a road roller, covered and maintained by a coating process, and then performance is measured, the three-day compressive strength is detected according to the standard JTGE51-2009 test procedure for stabilizing materials of inorganic binding materials of highway engineering, the degree of compaction and unconfined compressive strength are detected by the standard JTGF80/1-2004, and the test results are shown in the table 1.
| Test item | Compressive strength (3 days) | Unconfined compressive strength | Degree of compaction |
| Example 1 | 6.7MPa | 10.6MPa | 96％ |
| Example 2 | 7.1MPa | 13.1MPa | 98％ |
| Example 3 | 6.5MPa | 11.4MPa | 97％ |
| Comparative example 1 | 6.2MPa | 9.5MPa | 91％ |
| Comparative example 2 | 6.3MPa | 8.9MPa | 93％ |
TABLE 1
The test result shows that: the composite roadbed material prepared by the invention does not belong to other roadbed materials in performance indexes, and is even superior to other materials.
The invention adopts the construction waste as the main material to process and prepare the composite roadbed material, thereby reducing the exploitation of natural resources and saving energy; and the urban construction waste can be treated in a harmless and recycling manner, so that the pressure of the traditional treatment method of the construction waste on the environment is reduced, and the aims of changing waste into valuable and protecting the environment are fulfilled.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The composite roadbed material prepared from the construction waste is characterized by comprising the following raw materials: the building waste aggregate comprises building waste fine aggregate, building waste coarse aggregate, building waste powder, waste lime powder, pumice particles, slag powder, glass fiber, desulfurized gypsum and water.
2. The composite roadbed material prepared from the construction waste, according to claim 1, wherein the composite roadbed material is characterized in that: the particle size of the construction waste fine aggregate is 6-12mm, the particle size of the construction waste coarse aggregate is 20-40mm, and the particle size of the construction waste powder is 1-3mm.
3. The composite roadbed material prepared from the construction waste, according to claim 1, wherein the composite roadbed material is characterized in that: the particle size of the waste lime powder is 5-8mm.
4. The composite roadbed material prepared from the construction waste, according to claim 1, is characterized in that: the grain diameter of the slag powder is 8-13mm.
5. The composite roadbed material prepared from the construction waste as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 22-28 parts of construction waste fine aggregate, 35-46 parts of construction waste coarse aggregate, 13-18 parts of construction waste powder, 10-14 parts of waste lime powder, 7-10 parts of pumicite particles, 8-12 parts of slag powder, 3-6 parts of glass fiber, 3-7 parts of desulfurized gypsum and 8-12 parts of water.
6. The composite roadbed material prepared from the construction waste as claimed in claim 5, which is characterized by comprising the following raw materials in parts by weight: 22 parts of construction waste fine aggregate, 43 parts of construction waste coarse aggregate, 14 parts of construction waste powder, 14 parts of waste lime powder, 8 parts of pumicite particles, 12 parts of slag powder, 4 parts of glass fiber, 7 parts of desulfurized gypsum and 11 parts of water.
7. The composite roadbed material prepared from the construction waste as claimed in claim 5, which is characterized by comprising the following raw materials in parts by weight: 25 parts of construction waste fine aggregate, 40 parts of construction waste coarse aggregate, 15 parts of construction waste powder, 12 parts of waste lime powder, 9 parts of pumicite particles, 10 parts of slag powder, 5 parts of glass fiber, 6 parts of desulfurized gypsum and 10 parts of water.
8. The composite roadbed material prepared from the construction waste as claimed in claim 5, which is characterized by comprising the following raw materials in parts by weight: 27 parts of construction waste fine aggregate, 38 parts of construction waste coarse aggregate, 17 parts of construction waste powder, 11 parts of waste lime powder, 10 parts of pumicite particles, 8 parts of slag powder, 6 parts of glass fiber, 4 parts of desulfurized gypsum and 9 parts of water.
9. The method for preparing a composite roadbed material prepared from construction wastes according to any one of claims 1 to 8, wherein the method comprises the following steps: during construction, the construction waste fine aggregate, the construction waste coarse aggregate, the construction waste powder, the waste lime powder, the pumicite particles, the slag powder, the glass fiber and the desulfurization gypsum are added with water and stirred uniformly, and then the mixture is laid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211434366.0A CN115677309A (en) | 2022-11-16 | 2022-11-16 | Composite roadbed material prepared from construction waste and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211434366.0A CN115677309A (en) | 2022-11-16 | 2022-11-16 | Composite roadbed material prepared from construction waste and preparation method thereof |
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| CN115677309A true CN115677309A (en) | 2023-02-03 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117362A (en) * | 2018-01-05 | 2018-06-05 | 湖南云中再生科技股份有限公司 | A kind of building waste road surface base layer material and preparation method thereof |
| CN109252431A (en) * | 2018-10-30 | 2019-01-22 | 浙江中南建设集团有限公司 | Inorganic combination containing building waste stablizes mixture and makees roadbed bed course and preparation method thereof |
| CN109942265A (en) * | 2019-01-30 | 2019-06-28 | 北京首钢资源综合利用科技开发有限公司 | A kind of roadbed material and its application using building waste processing product |
| CN112110705A (en) * | 2020-08-25 | 2020-12-22 | 上海市政工程设计研究总院（集团）有限公司 | Self-repairing semi-rigid base material for recycling construction waste |
| CN114507053A (en) * | 2021-12-29 | 2022-05-17 | 武汉大学(肇庆)资源与环境技术研究院 | Cement-free roadbed material and preparation method thereof |
| CN115073090A (en) * | 2022-06-16 | 2022-09-20 | 山东省交通科学研究院 | Anti-shrinkage construction waste stable road base material and application thereof |
-
2022
- 2022-11-16 CN CN202211434366.0A patent/CN115677309A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117362A (en) * | 2018-01-05 | 2018-06-05 | 湖南云中再生科技股份有限公司 | A kind of building waste road surface base layer material and preparation method thereof |
| CN109252431A (en) * | 2018-10-30 | 2019-01-22 | 浙江中南建设集团有限公司 | Inorganic combination containing building waste stablizes mixture and makees roadbed bed course and preparation method thereof |
| CN109942265A (en) * | 2019-01-30 | 2019-06-28 | 北京首钢资源综合利用科技开发有限公司 | A kind of roadbed material and its application using building waste processing product |
| CN112110705A (en) * | 2020-08-25 | 2020-12-22 | 上海市政工程设计研究总院（集团）有限公司 | Self-repairing semi-rigid base material for recycling construction waste |
| CN114507053A (en) * | 2021-12-29 | 2022-05-17 | 武汉大学(肇庆)资源与环境技术研究院 | Cement-free roadbed material and preparation method thereof |
| CN115073090A (en) * | 2022-06-16 | 2022-09-20 | 山东省交通科学研究院 | Anti-shrinkage construction waste stable road base material and application thereof |
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