CN112341112A - Stabilized soil using construction waste as raw material and preparation method and application thereof - Google Patents
Stabilized soil using construction waste as raw material and preparation method and application thereof Download PDFInfo
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- CN112341112A CN112341112A CN202011213035.5A CN202011213035A CN112341112A CN 112341112 A CN112341112 A CN 112341112A CN 202011213035 A CN202011213035 A CN 202011213035A CN 112341112 A CN112341112 A CN 112341112A
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- construction waste
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- curing agent
- recycled aggregate
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/12—Hydraulic lime
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
Abstract
The invention belongs to the technical field of construction waste recycling, and particularly relates to stabilized soil taking construction waste as a raw material, and a preparation method and application thereof, wherein the stabilized soil comprises the following components in parts by weight: 55-75 parts; building garbage recycled aggregate: 17-37 parts; cement: 2-4 parts; lime: 4-6 parts; curing agent: 0.016-0.02 part. The unconfined compressive strength of the stabilized soil provided by the invention is 2.8-4.7MPa in 7 days, and the strength is high; the modulus of resilience is 26.88-38.21MPa, the stability is good, and the deflection of the roadbed can be obviously reduced.
Description
Technical Field
The invention belongs to the technical field of construction waste recycling, and particularly relates to stabilized soil taking construction waste as a raw material, and a preparation method and application thereof.
Background
The construction waste refers to the general name of dregs, waste concrete, waste bricks and stones and other wastes generated in the production activities of the construction industry such as demolition, construction, decoration and repair. The construction waste residue soil refers to waste soil, waste materials and other wastes generated in the process of building, rebuilding, expanding and dismantling various buildings, structures, pipe networks and residential decoration house decoration in construction units and construction units, the construction waste residue soil generated and discharged by construction only exceeds 1 hundred million tons every year in China, and the quantity of the construction residue soil generated by building decoration, removal and building material industry reaches hundreds of million tons. The construction waste recycled aggregate refers to recycled aggregate prepared by crushing and screening waste concrete, waste bricks and tiles and the like, and has low strength and high water absorption compared with natural aggregate, so that the construction waste recycled aggregate is difficult to recycle, the utilization rate is low, particularly, a proper recycling way is not found for muck.
Disclosure of Invention
In order to solve the problems, the invention provides stabilized soil taking construction waste as a raw material, and a preparation method and application thereof, so that resource utilization can be realized, and the stabilized soil serving as a road subgrade filler is ensured to have good compressive strength and stability.
On one hand, the embodiment of the invention provides stabilized soil taking construction waste residue soil as a raw material, which comprises the following components in parts by weight,
building garbage residue soil: 55-75 parts;
building garbage recycled aggregate: 17-37 parts;
cement: 2-4 parts;
lime: 4-6 parts;
curing agent: 0.016-0.02 part.
Further, the particle size of the construction waste residue soil is 0-4.75mm, wherein the mass fraction of the construction waste residue soil with the particle size of 0-0.6 mm is 50-70%, and the mass fraction of the construction waste residue soil with the particle size of more than 0.6mm and less than or equal to 4.75mm is 30-50%; the mass fraction of organic matters in the construction waste residue soil is 0-8%.
Further, the particle size of the construction waste recycled aggregate is 4.57-25mm, wherein the mass fraction of the construction waste recycled aggregate with the particle size of 4.75-10 mm is 25-40%, and the value fraction of the construction waste recycled aggregate with the particle size of more than 10mm and less than or equal to 25mm is 60-75%; the crushing value of the construction waste recycled aggregate is 25-40%.
Further, the cement is silicate cement, and the strength of the cement is 32.5-42.5 MPa.
Furthermore, in the lime, the mass fraction of the lime with the particle size larger than 45 μm is 7-15%, and the sum of the mass fractions of calcium and magnesium in the lime is 70-95%.
Furthermore, the solid content of the curing agent is 30-55%, and the pH value of the curing agent is 8-9.
Further, the curing agent is a composite ionic curing agent.
Further, the composite ionic curing agent is liquid or powder.
In another aspect, an embodiment of the present invention provides a method for preparing stabilized soil using construction waste as a raw material, where the method includes,
mixing the raw materials, and adding a curing agent to obtain stabilized soil; the raw materials comprise the following components in parts by weight: building garbage residue soil: 55-75 parts; building garbage recycled aggregate: 17-37 parts; cement: 2-4 parts; lime: 4-6 parts; curing agent: 0.016-0.02 part.
On the other hand, the embodiment of the invention also provides the application of the stabilized soil taking the construction waste as the raw material, and the stabilized soil is used as the road subgrade filler to be applied to the road base layer and the road subbase layer.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the invention provides a stable soil body taking construction waste residue soil as a raw material, and a preparation method and application thereof, wherein the stable soil comprises the following components in parts by weight: 55-75 parts; building garbage recycled aggregate: 17-37 parts; cement: 2-4 parts; lime: 4-6 parts; curing agent: 0.016-0.02 part. The environment-friendly stabilized soil prepared by the formula disclosed by the invention is suitable for road bed fillers, is jointly cured by cement, lime and a curing agent, is supported by construction waste recycled aggregates, has the characteristics of high strength, good uniformity and good stability, can greatly absorb construction muck, and realizes resource utilization of the muck.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly apparent therefrom. It will be understood by those skilled in the art that these specific embodiments and examples are for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, 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. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
In order to solve the technical problems, the embodiment of the invention provides the following general ideas:
on one hand, the embodiment of the invention provides stabilized soil taking construction waste as a raw material, which comprises the following components in parts by weight,
building garbage residue soil: 55-75 parts;
building garbage recycled aggregate: 17-37 parts;
cement: 2-4 parts;
lime: 4-6 parts;
curing agent: 0.016-0.02 part.
The functions of the components in the invention are as follows:
building garbage recycled aggregate: the construction waste recycled aggregate plays the roles of supporting and skeleton, can inhibit shrinkage and improve volume stability. If the weight part of the construction waste recycled aggregate is too small, the construction waste recycled aggregate cannot effectively play a supporting role, and the improvement degree of the strength of the stabilized soil is limited.
Cement: the cement reacts with water to generate hydrated calcium silicate and hydrated calcium sulfoaluminate gel, which plays a role in cementing soil, generates crystals such as calcium hydroxide, ettringite and the like, and compactly fills soil, so that the solidified soil has higher compactness, thereby improving the strength of the solidified soil.
Lime: the calcium hydroxide is combined with active substances in soil, such as silicon dioxide, aluminum oxide, ferric oxide and the like, to generate gel such as calcium silicate, calcium aluminate, calcium ferrite and the like, so that the soil is cemented, and the solidified soil has higher strength.
Curing agent: the curing agent can stimulate the activity of the muck to generate a gel with active substances in the soil, such as silicon dioxide, calcium oxide and the like, the potential characteristics of the clay are exerted, the strength is increased, and meanwhile, the curing agent and cations in the muck perform ion exchange, so that the surface potential is reduced, the electric double layer is thinned, soil particles tend to agglomerate to generate a high-molecular net structure, and the strength of the whole stable soil body is improved.
As an implementation mode of the embodiment of the invention, the particle size of the construction waste residue soil is 0-4.75mm, wherein the mass fraction of the construction waste residue soil with the particle size of 0-0.6 mm is 50-70%, and the mass fraction of the construction waste residue soil with the particle size of more than 0.6mm and less than or equal to 4.75mm is 30-50%; the mass fraction of organic matters in the construction waste residue soil is 0-8%.
As an implementation mode of the embodiment of the invention, the construction waste recycled aggregate has a particle size of 4.57-25mm, wherein the mass fraction of the construction waste recycled aggregate with the particle size of 4.75-10 mm is 25-40%, and the value fraction of the construction waste recycled aggregate with the particle size of more than 10mm and less than or equal to 25mm is 75-60%; the crushing value of the construction waste recycled aggregate is 25-40%. The mutual lap joint of different grain compositions can make the whole body more compact, increase 4.57-25mm construction waste recycled aggregate and expand the grain range of the environment-friendly stable soil body from 0-4.75mm to 25mm, thereby effectively improving the integral strength.
As an implementation manner of the embodiment of the invention, the crushing value of the construction waste recycled aggregate is 25-40%.
The crushing value shows the mechanical properties of construction waste recycled aggregate, and the smaller the crushing value is, the better the recycled aggregate firmness is, and the higher the strength is, the better the supporting effect is after being used for stabilizing the soil body.
In one embodiment of the present invention, the cement is a portland cement, and the strength of the cement is 32.5 to 42.5 MPa. The portland cement is ordinary portland cement or portland cement.
In one embodiment of the invention, the mass fraction of lime with a particle size of more than 45 μm in the lime is 7-15%, and the mass fraction of available calcium and magnesium in the lime is 70-95%. The effective calcium and magnesium refers to calcium oxide and magnesium oxide which can react in lime, and the mass fraction of the effective calcium and magnesium refers to the total mass fraction of calcium elements and magnesium elements in the effective calcium and magnesium in the lime. The mass fraction of lime with a particle size of more than 45 μm is actually the fineness of lime, i.e. the mass fraction of the surplus lime of a square-hole sieve with a particle size of 45 μm.
As an implementation manner of the embodiment of the invention, the solid content in the curing agent is 30-55%, and the pH value of the curing agent is 8-9. The curing agent is completely dissolved in water, brownish black, and has no pungent odor. The addition form of the curing agent is external addition.
As an implementation manner of the embodiment of the present invention, the curing agent is a composite ionic curing agent, and may be a bessel curing agent in the united states, which may be a liquid or a powder and is easily soluble in water.
On the other hand, the embodiment of the invention provides a use method of the stabilized soil taking the construction waste residue soil as the raw material, which comprises the following steps,
mixing the raw materials, and adding a curing agent to obtain stabilized soil; the raw materials comprise the following components in parts by weight: building garbage residue soil: 55-75 parts; building garbage recycled aggregate: 17-37 parts; cement: 2-4 parts; lime: 4-6 parts; curing agent: 0.016-0.02 part.
In another aspect, an embodiment of the present invention provides an application of the stabilized soil using the construction waste residue soil as a raw material, and the stabilized soil is applied to a road base layer and a road subbase layer as a road subgrade filler.
The stabilized soil using the construction waste residue soil as a raw material and the use method thereof according to the present invention will be described in detail with reference to examples, comparative examples and experimental data.
Example 1
Example 1 provides stabilized soil using construction waste residue soil as a raw material, and a preparation method thereof, wherein the mass fractions of cement, lime, construction waste residue soil, construction waste recycled aggregate and curing agent in the stabilized soil are shown in table 1.
Wherein the content of the first and second substances,
the fineness of lime (45 μm square mesh screen residue) was 15%.
The particle size of the construction waste residue soil is 0-4.75mm, wherein the mass fraction of the construction waste residue soil with the particle size of 0-0.6 mm is 55%, and the mass fraction of the construction waste residue soil with the particle size of more than 0.6mm and less than or equal to 4.75mm is 42%; the mass fraction of organic matters in the construction waste residue soil is 3%.
The particle size of the construction waste recycled aggregate is 4.57-25mm, wherein the mass fraction of the construction waste recycled aggregate with the particle size of 4.75-10 mm is 30%, and the value fraction of the construction waste recycled aggregate with the particle size of more than 10mm and less than or equal to 25mm is 75%; the crushing value of the construction waste recycled aggregate is 35 percent.
The curing agent is a Bessel curing agent liquid composite ionic type, the solid content of the curing agent is 38%, and the pH value of the curing agent is 8.
And uniformly mixing the cement, the lime, the construction waste muck and the construction waste recycled aggregate, and adding a curing agent to obtain the stabilized soil.
Example 2
Example 2 provides stabilized soil using construction waste muck as a raw material, and a preparation method thereof, wherein the mass fractions of cement, lime, construction waste muck, construction waste recycled aggregate and a curing agent in the stabilized soil are shown in table 1.
Wherein the content of the first and second substances,
the fineness of lime (surplus of a square-hole sieve with the size of 45 mu m) is 7 percent.
The particle size of the construction waste residue soil is 0-4mm, wherein the mass fraction of the construction waste residue soil with the particle size of 0-0.6 mm is 60%, and the mass fraction of the construction waste residue soil with the particle size of more than 0.6mm and less than or equal to 4mm is 40%; the mass fraction of organic matters in the construction waste residue soil is 5%.
The particle size of the construction waste recycled aggregate is 6-25 mm, wherein the mass fraction of the construction waste recycled aggregate with the particle size of 6-10 mm is 35%, and the value fraction of the construction waste recycled aggregate with the particle size of more than 10mm and less than or equal to 25mm is 65%; the crushing value of the construction waste recycled aggregate is 35 percent.
The curing agent is a Bessel curing agent liquid composite ionic type, the solid content of the curing agent is 40%, and the pH value of the curing agent is 8.5.
And uniformly mixing the cement, the lime, the construction waste muck and the construction waste recycled aggregate, and adding a curing agent to obtain the stabilized soil.
Example 3
Example 3 provides stabilized soil using construction waste muck as a raw material, and a preparation method thereof, wherein the mass fractions of cement, lime, construction waste muck, construction waste recycled aggregate and curing agent in the stabilized soil are shown in table 1.
Wherein the content of the first and second substances,
the fineness of lime (surplus of a 45-micron square-hole sieve) is 13 percent.
The particle size of the construction waste residue soil is 0-4mm, wherein the mass fraction of the construction waste residue soil with the particle size of 0-0.6 mm is 65%, and the mass fraction of the construction waste residue soil with the particle size of more than 0.6mm and less than or equal to 4mm is 35%; the mass fraction of organic matters in the construction waste residue soil is 3%.
The particle size of the construction waste recycled aggregate is 6-20 mm, wherein the mass fraction of the construction waste recycled aggregate with the particle size of 6-10 mm is 38%, and the value fraction of the construction waste recycled aggregate with the particle size of more than 10mm and less than or equal to 20mm is 62%; the crushing value of the construction waste recycled aggregate is 35 percent.
The curing agent is a Bessel curing agent powder composite ion type, the solid content of the curing agent is 35 percent, and the pH value is 9.
And uniformly mixing the cement, the lime, the construction waste muck and the construction waste recycled aggregate, and adding a curing agent to obtain the stabilized soil.
Example 4
Example 4 provides stabilized soil using construction waste muck as a raw material, and a preparation method thereof, wherein the mass fractions of cement, lime, construction waste muck, construction waste recycled aggregate and a curing agent in the stabilized soil are shown in table 1.
Wherein the content of the first and second substances,
the fineness of lime (surplus of a square-hole sieve with the size of 45 mu m) is 10 percent.
The particle size of the construction waste residue soil is 0-4mm, wherein the mass fraction of the construction waste residue soil with the particle size of 0-0.6 mm is 55%, and the mass fraction of the construction waste residue soil with the particle size of more than 0.6mm and less than or equal to 4mm is 42%; the mass fraction of organic matters in the construction waste residue soil is 3%.
The particle size of the construction waste recycled aggregate is 4.57-25mm, wherein the mass fraction of the construction waste recycled aggregate with the particle size of 4.75-10 mm is 30%, and the value fraction of the construction waste recycled aggregate with the particle size of more than 10mm and less than or equal to 25mm is 75%; the crushing value of the construction waste recycled aggregate is 35 percent.
The curing agent is a Bessel curing agent powder composite ion type, the solid content of the curing agent is 45 percent, and the pH value is 9.
And uniformly mixing the cement, the lime, the construction waste muck and the construction waste recycled aggregate, and adding a curing agent to obtain the stabilized soil.
Example 5
Example 5 provides stabilized soil using construction waste muck as a raw material, wherein the mass fractions of cement, lime, construction waste muck, construction waste recycled aggregate and a curing agent in the stabilized soil are shown in table 1.
Wherein the content of the first and second substances,
the fineness of lime (surplus of a square-hole sieve with a size of 45 mu m) is 9 percent.
The particle size of the construction waste residue soil is 0-4mm, wherein the mass fraction of the construction waste residue soil with the particle size of 0-0.6 mm is 55%, and the mass fraction of the construction waste residue soil with the particle size of more than 0.6mm and less than or equal to 4mm is 42%; the mass fraction of organic matters in the construction waste residue soil is 3%.
The particle size of the construction waste recycled aggregate is 4.57-25mm, wherein the mass fraction of the construction waste recycled aggregate with the particle size of 4.75-10 mm is 30%, and the value fraction of the construction waste recycled aggregate with the particle size of more than 10mm and less than or equal to 25mm is 75%; the crushing value of the construction waste recycled aggregate is 35 percent.
The curing agent is a Bessel curing agent powder composite ion type, the solid content of the curing agent is 35 percent, and the pH value is 9.
And uniformly mixing the cement, the lime, the construction waste muck and the construction waste recycled aggregate, and adding a curing agent to obtain the stabilized soil.
Comparative example 1
Comparative example 1 provides stabilized soil using construction waste muck as a raw material and a preparation method thereof, wherein the mass fractions of cement, lime, construction waste muck and construction waste recycled aggregate in the stabilized soil are shown in table 1.
And uniformly mixing the cement, the lime, the construction waste residue soil and the construction waste recycled aggregate to obtain the stabilized soil.
Comparative example 2
Comparative example 2 provides stabilized soil using construction waste muck as a raw material and a preparation method thereof, wherein the mass fractions of lime, construction waste muck, construction waste recycled aggregate and curing agent in the stabilized soil are shown in table 1.
The curing agent is liquid composite ionic type, the solid content is 35 percent, and the pH value is 9.
And uniformly mixing the lime, the construction waste muck, the construction waste recycled aggregate and the curing agent to obtain the stabilized soil.
Comparative example 3
Comparative example 3 provides stabilized soil using construction waste muck as a raw material and a preparation method thereof, wherein the mass fractions of cement, construction waste muck, construction waste recycled aggregate and curing agent in the stabilized soil are shown in table 1.
The curing agent is liquid composite ionic type, the solid content is 35 percent, and the pH value is 9.
And uniformly mixing the cement, the construction waste residue soil and the construction waste recycled aggregate, and adding a curing agent to obtain the stabilized soil.
TABLE 1
| Serial number | Cement (%) | Lime (%) | Slag soil (%) | Construction waste recycled aggregate (%) | Curing agent (%) |
| Example 1 | 2 | 4 | 74 | 20 | 0.018 |
| Example 2 | 2 | 6 | 75 | 17 | 0.016 |
| Example 3 | 3 | 5 | 67 | 25 | 0.020 |
| Example 4 | 4 | 4 | 55 | 37 | 0.018 |
| Example 5 | 4 | 5 | 57 | 34 | 0.018 |
| Comparative example 1 | 4 | 4 | 75 | 17 | 0 |
| Comparative example 2 | 0 | 4 | 76 | 20 | 0.018 |
| Comparative example 3 | 4 | 0 | 61 | 35 | 0.018 |
TABLE 2
The stabilized soils prepared in examples 1 to 5 and comparative examples 1 to 3 were tested for moisture mass fraction, dry density, 7-day unconfined compressive strength and modulus of resilience, and the results are shown in Table 2. Wherein, the measuring method of unconfined compressive strength in 7 days is based on T0805-1994 in test Specification for inorganic binder stabilizing materials for road engineering (JTG E51-2009), and the higher the compressive strength is, the better the stabilized soil performance is; the measurement method of the rebound modulus is based on T0808-1994 in the test regulation of inorganic binder stabilized materials for highway engineering (JTG E51-2009), and the higher the rebound modulus is, the more stable the stabilized soil is, and the better the performance is.
As is apparent from the data in Table 2, the stabilized soils prepared in examples 1-5 had a water content of 11.8-13.2% by mass and a dry density of 1.47-1.78g/cm3The unconfined compressive strength is 2.8-4.7MPa in 7 days, and the strength is high; the modulus of resilience is 26.88-38.21MPa, the stability is good, and the deflection of the roadbed can be obviously reduced. Comparative examples 1 to 3 preparationThe stabilized soil has a water content of 12.7-13.4 wt% and a dry density of 1.35-1.50g/cm3The unconfined compressive strength of 7 days is 0.8-1.0MPa, and the modulus of resilience is 14.72-18.12 MPa.
The advantages of the invention include:
(1) the construction waste is urban solid waste with the largest production amount in China, the production amount of the construction waste in China exceeds 15 hundred million tons per year, the production amount of the construction waste in Beijing city in 2018 is up to 1.83 hundred million tons, the construction waste becomes a main cause of the waste surrounding city, serious environmental and social problems are caused, and the overall recycling rate is less than 5%. The environment-friendly and stable soil body prepared by doping the construction waste recycled aggregate can greatly absorb the construction waste, and has better environmental benefit.
(2) The construction waste residue generated and discharged by construction only in China per year exceeds 1 hundred million tons, and the quantity of the construction waste residue generated by building decoration, removal and building material industry reaches hundreds of millions of tons, so that great potential safety hazards exist in a disposal mode of open-air stockpiling or simple landfill, and a proper resource approach is found for the waste residue by preparing an environment-friendly stable soil body from the construction waste residue, so that the method has obvious environment-friendly benefit.
(3) The construction waste recycled aggregate is added, so that the grade distribution of the solidified soil is optimized, and the compressive strength and the stability of the environment-friendly and stable soil body of the construction waste are obviously improved by utilizing the supporting effect of the construction waste recycled aggregate.
(4) The invention adopts a combined curing mode of cement, lime and curing agent, greatly improves the compressive strength and stability of the environment-friendly stable soil body of the construction waste, improves the structure of the roadbed, ensures that the 7d unconfined compressive strength meets the requirements of road base layers or subbase layers of various grades of roads, and can be widely applied to the road base layers and the subbase layers.
(5) The environment-friendly and stable soil body of the construction waste can reduce the traditional hard setting stabilizer, solve the problem of road embrittlement in the traditional method, improve the resilience modulus of the roadbed and obviously reduce the deflection of the roadbed.
(6) The invention applies a large amount of construction waste residue soil, realizes resource utilization, and the prepared environment-friendly stable soil body has high strength and good bending resistance, and is a novel environment-friendly building material.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The stabilized soil taking the construction waste as the raw material is characterized by comprising the following components in parts by weight,
building garbage residue soil: 55-75 parts;
building garbage recycled aggregate: 17-37 parts;
cement: 2-4 parts;
lime: 4-6 parts;
curing agent: 0.016-0.02 part.
2. The stabilized soil using construction waste as raw material according to claim 1, characterized in that the construction waste residue soil has a particle size of 0-4.75mm, wherein the mass fraction of the construction waste residue soil with a particle size of 0-0.6 mm is 50-70%, and the mass fraction of the construction waste residue soil with a particle size of 0.6mm < 4.75mm is 30-50%; the mass fraction of organic matters in the construction waste residue soil is 0-8%.
3. The stabilized soil using the construction waste as raw material according to claim 1, characterized in that the construction waste recycled aggregate has a particle size of 4.57-25mm, wherein the mass fraction of the construction waste recycled aggregate having a particle size of 4.75-10 mm is 25-40%, and the value fraction of the construction waste recycled aggregate having a particle size of 10mm < 25mm is 60-75%.
4. The stabilized soil using construction waste as raw material according to claim 3, wherein the construction waste recycled aggregate has a crush value of 25-40%.
5. The stabilized soil using construction waste as a raw material according to claim 1, wherein the cement is a portland cement, and the strength of the cement is 32.5 to 42.5 MPa.
6. The stabilized soil using construction waste as a raw material according to claim 1, wherein the mass fraction of lime having a particle size of > 45 μm in the lime is 7 to 15%, and the mass fraction of available calcium and magnesium in the lime is 70 to 95%.
7. The stabilized soil using construction waste as raw material according to claim 1, wherein the curing agent has a solid content of 30-55% and a pH value of 8-9.
8. The stabilized soil using construction waste as raw material according to claim 7, wherein the curing agent is a composite ionic curing agent.
9. The method for preparing stabilized soil using construction waste as a raw material according to any one of claims 1 to 8, wherein the method comprises,
mixing the raw materials, and adding a curing agent to obtain stabilized soil; the raw materials comprise the following components in parts by weight: building garbage residue soil: 55-75 parts; building garbage recycled aggregate: 17-37 parts; cement: 2-4 parts; lime: 4-6 parts; curing agent: 0.016-0.02 part.
10. Use of a stabilized soil based on construction waste as claimed in any one of claims 1 to 8, wherein said stabilized soil is used as a roadbed filler for roadways and road sub-base.
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| CN113914293A (en) * | 2021-10-14 | 2022-01-11 | 温州市渣土利用开发股份有限公司 | Method for reinforcing soft soil foundation by adopting aggregate framework-curing technology |
| CN114276108A (en) * | 2021-12-28 | 2022-04-05 | 河北嘉固新材料科技有限公司 | Self-compacting, large-flow-state and ultra-early-strength solidified waste soil-stone slurry and preparation method thereof |
| CN115974480A (en) * | 2022-12-20 | 2023-04-18 | 东北林业大学 | Red brick aggregate cement stabilized soil material, preparation method thereof and application thereof to pavement subbase |
| CN116375416A (en) * | 2023-04-07 | 2023-07-04 | 北京建筑大学 | Mixing proportion design method of engineering residue soil base raw soil material |
| CN116813273A (en) * | 2023-06-19 | 2023-09-29 | 湖北路城建设科技有限公司 | Slag soil type building rubbish regenerated stone plate and preparation method thereof |
| CN116947433A (en) * | 2023-09-21 | 2023-10-27 | 福建省协鑫环保科技有限公司 | Cement mixed material manufactured by waste mud, preparation method and forming construction method |
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| CN113914293A (en) * | 2021-10-14 | 2022-01-11 | 温州市渣土利用开发股份有限公司 | Method for reinforcing soft soil foundation by adopting aggregate framework-curing technology |
| CN114276108A (en) * | 2021-12-28 | 2022-04-05 | 河北嘉固新材料科技有限公司 | Self-compacting, large-flow-state and ultra-early-strength solidified waste soil-stone slurry and preparation method thereof |
| CN115974480A (en) * | 2022-12-20 | 2023-04-18 | 东北林业大学 | Red brick aggregate cement stabilized soil material, preparation method thereof and application thereof to pavement subbase |
| CN116375416A (en) * | 2023-04-07 | 2023-07-04 | 北京建筑大学 | Mixing proportion design method of engineering residue soil base raw soil material |
| CN116813273A (en) * | 2023-06-19 | 2023-09-29 | 湖北路城建设科技有限公司 | Slag soil type building rubbish regenerated stone plate and preparation method thereof |
| CN116813273B (en) * | 2023-06-19 | 2024-03-19 | 湖北路城建设科技有限公司 | Slag soil type building rubbish regenerated stone plate and preparation method thereof |
| CN116947433A (en) * | 2023-09-21 | 2023-10-27 | 福建省协鑫环保科技有限公司 | Cement mixed material manufactured by waste mud, preparation method and forming construction method |
| CN116947433B (en) * | 2023-09-21 | 2023-12-15 | 福建省协鑫环保科技有限公司 | Cement mixed material manufactured by waste mud, preparation method and forming construction method |
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