CN106746998A - The resource utilization process and method of a kind of dregs - Google Patents
The resource utilization process and method of a kind of dregs Download PDFInfo
- Publication number
- CN106746998A CN106746998A CN201611198885.6A CN201611198885A CN106746998A CN 106746998 A CN106746998 A CN 106746998A CN 201611198885 A CN201611198885 A CN 201611198885A CN 106746998 A CN106746998 A CN 106746998A
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- dregs
- cement
- resource utilization
- stabilizing
- cement stabilizing
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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
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
-
- 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
- E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Road Paving Structures (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses the resource utilization process and method of a kind of dregs, it is related to solid waste regeneration to utilize field;Comprise the following steps:The screening and storage of dregs raw material;Raw material evaluation and performance evaluation are carried out to dregs;Composition design experiment is carried out as cementitious matter using cement, cement stabilizing dregs structure sheaf intensity is controlled by cement stabilized soil underlayment intensity requirement, determines the control cement dose of cement stabilizing dregs;Production is carried out using plant mixing method to cement stabilizing dregs to mix and stir;Water loss is reduced in transportation as far as possible, while being not up to presetting period of cement stabilizing dregs before ensureing mixture laying, scene is paved using paver, it is determined that suitable coefficient of loose laying is reaching design thickness requirement;Suitable compaction assembly is selected, compactness design requirement is reached, after the completion of rolling, cement stabilizing dregs underlayment surfacing;It is resources conservation, environment-friendly, building waste dregs can be made to be utilized effectively.
Description
Technical field
Field is utilized the present invention relates to solid waste regeneration, especially a kind of resource utilization process of dregs and side
Method.
Background technology
As the fast development of urban construction, the yield of building waste are growing day by day, building waste has as one kind
The solid waste of resource attribute, by disposal of resources, can be applied in engineering construction as raw material, and formation can hold
The benign cycle of supervention exhibition.The technological approaches of construction refuse resource regeneration is that pre- place is carried out after building waste is reclaimed
Reason, and use professional equipment to generate regeneration aggregate and powder after crushing, the resources such as natural sand stone, soil are substituted, produce various regeneration
Building material product and Load materials.Dregs is the one kind in building waste, be also be easiest to during recycling it is ignored
Part, be often directly landfilled treatment.Dregs also can be the precious resources of regeneration in fact, by its regeneration, can
Further to improve the comprehensive regeneration rate of building waste, promote building waste comprehensively and efficiently regeneration.
Current road project, mainly does underlayment with rendzinas.Clearing up for lime can cause serious environment
Pollution, and construction of limestone soil is more based on artificial, and efficiency is low, grey dosage control is inaccurate.And use cement stabilizing dregs base
Layer, mechanized construction is carried out using plant mix equipment and paver, and not only efficiency high, cement dose precise control, can also avoid
The environmental pollution that the ash that disappears is caused.Cement stabilizing dregs substitutes Lime-soil subbase, not only environmental protection, economically feasible, and cement is steady
Determine dregs underlayment intensity higher, form long-life basic unit.
In sum, the resource utilization process and method of a kind of dregs are related to using cement as cementing material to dregs
Stabilization is carried out, road subbase course is applied to, with environmental protection, the value of sustainable development and certain economic benefit and society's effect
Benefit.
The content of the invention
The technical problem to be solved in the present invention is to provide the resource utilization process and method of a kind of dregs, is done using cement
For cementitious matter carries out stabilization, produced using existing stabilized soil mixing plant, substitute rendzinas and be used as road subbase course, money
Source is saved, environment-friendly, technical maturity and suitable for rainy season construction, and building waste dregs can be made to be utilized effectively, and is had
Preferable economic benefit and social benefit.
In order to solve the above technical problems, the technical solution used in the present invention is:
The resource utilization process and method of a kind of dregs, comprise the following steps:
(1)The screening and storage of dregs raw material;Signified building waste dregs of the invention has two types, and one kind is the mixed class of brick
The impurity of building waste produced soil and fine granules when pre-screening is carried out using the pre-processing device of specialty, wherein native contains
Amount is higher, and fine granules content is relatively fewer;Another kind is being crushed to the mixed class building waste of brick, when the PROCESS FOR TREATMENT such as sieving
Further screen out what is come, its native content is less, and fine granules content is relatively more.Removal two kinds of dregs materials in wood chip,
It is by sources different after the debris such as iron filings, light materials and bulk masonry, store classifiedly.
(2)Raw material evaluation and performance evaluation are carried out to dregs;A large amount of, representative is taken in dregs stockpile after working process
Property experiment, carry out performance evaluation and analysis to dregs material, the main constituent including dregs, physicochemical property and its as
The technical indicator analyses such as water content, liquid limit, plastic limit, plasticity index, the particle composition of Load materials, also need to analyze dregs if necessary
The content of organic matter and sulphates content etc..Through analysis, coarse-grained soil category is belonged on dregs engineering classification, it is less than 0.6mm particles
Content be less than 30%, liquid limit be less than 40%, plasticity index is not more than 17, can using cement carry out stabilization.The water content of dregs, liquid
The indexs such as limit, plastic limit, plasticity index, particle composition must meet《Town road engineering construction and inspection of quality specification》Middle cement is steady
Determine great soil group basic unit quality requirements of raw materials, the dregs to being unsatisfactory for requiring must carry out treatment rear and can be used.
(3)Composition design experiment is carried out as cementitious matter using cement, it is steady that cement stabilizing dregs structure sheaf intensity presses cement
Fixed soil underlayment intensity requirement is controlled, and determines the control cement dose of cement stabilizing dregs;With road cement stabilizing slag
Native 7d compression strength is not less than 1.5MPa for standard, and suitable match ratio is determined by testing, and detects that every road of compound is used
Performance indications(Mechanical property, anti-freezing property, scour resistance).Integrated economics situation, determines road optimum mix, to dispatching from the factory
Mix cement dose, optimum moisture content and the maximum dry density of cement stabilizing dregs.
(4)Production is carried out using plant mixing method to cement stabilizing dregs to mix and stir.
(5)Water loss is reduced in transportation as far as possible, while being not up to cement stabilizing slag before ensureing mixture laying
The presetting period of soil;
(6)Scene is paved using paver, it is determined that suitable coefficient of loose laying is reaching design thickness requirement;
(7)Suitable compaction assembly is selected, makes cement stabilizing dregs underlayment surfacing, reach compactness design requirement, formed
Road subbase course.
(8)Using watering Curing Method, watering amount and watering number of times are adjusted according to weather at that time, period makes cement stabilizing slag
Soil layer surface remains moistening, and the making construction of superstructure is started after the completion of waiting to conserve.
Preferably, the step(1)In dregs raw material refer to remove all kinds of buildings and resident's decorations
Produced spoir, rejected material during house.
Preferably, step(1)In dregs raw material refer to that the mixed class building waste of brick is set using the pretreatment of specialty
Further sieved in the mixed class construction waste crushing of impurity and brick, the screening process of the standby soil for carrying out pre-screening generation and fine granules
The soil and the impurity of fine granules for separating, and remove and be mixed in debris, light materials and the big brick such as wood chip, iron filings in dregs material
Stone.
Preferably, step(2)Material property is analyzed, including the physicochemical property of dregs material, water content, liquid limit,
Plastic limit, plasticity index, particle composition etc..
Preferably, step(1)In dregs engineering classification on belong to coarse-grained soil category, its content for being less than 0.6mm particles
Less than 30%, liquid limit is less than 40%, and plasticity index is not more than 17, can carry out stabilization using cement.
Preferably, step(3)In cement dose control 4% ~ 7%.
Preferably, step(5)Middle road subbase course construction is paved using paver.
The Binder Materials of base material, for the grade of the different volume of traffic and road, can use powder based on cement
The others inorganic binders such as coal ash, lime as Binder Materials, with energy when carrying out inorganic binder mix proportion design
It is no to meet 7 days unconfined compressive strengths for main design objective.
It is using the beneficial effect produced by above-mentioned technical proposal:
(1)There is provided a kind of mode of dregs recycling, form construction refuse resource and comprehensively, efficiently utilize.
Dregs is to be easiest to ignored part during construction refuse resource is utilized, often by directly landfill
Reason, the present invention after the PROCESS FOR TREATMENT such as screened impurity elimination, grinds dregs as the precious resources of regeneration by series of indoor
Study carefully and test and combine practical engineering application, be applied on road subbase course after it is carried out into stabilization through cement, improve building rubbish
The regeneration rate of rubbish, promotes and has promoted construction refuse resource efficiently to utilize comprehensively.
(2)Environmental protection, technology controlling and process accurate, efficiency high, economize on resources
Current road project, mainly does underlayment with rendzinas.Clearing up for lime can cause serious environmental pollution,
And construction of limestone soil is more based on artificial, efficiency is low, grey dosage control is inaccurate.And cement stabilizing dregs underlayment is used, profit
Mechanized construction is carried out with stabilized soil mixing plant and paver, not only efficiency high, cement dose precise control, can also avoid
The environmental pollution that the ash that disappears is caused.With the continuous reduction of cement price, cement stabilizing dregs substitutes rendzinas is used for road base
Layer, environmental protection, economically feasible, meanwhile, it is of the invention using dregs as former material, the purpose for reached reduces cost, economizing on resources.Cause
This, the present invention has significant Social benefit and economic benefit.
(3)Cement stabilizing dregs underlayment performance is higher more stable
The cement stabilizing dregs for being applied to road subbase course that the present invention is provided, is a kind of new Load materials, this material
Low cost, intensity are high, good stability, and paver of the rendzinas as road subbase course can be substituted completely, and cement is steady
Determine that dregs underlayment intensity is higher, the underlayment life-span of formation is longer.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is schematic flow sheet of the invention.
Specific embodiment
Embodiment 1
(1)The screening and storage of dregs former material
Building waste dregs complicated component, may cause the variability of its material than larger, to reduce its variability, class be mixed to brick
Building waste such as is crushed, is sieved at PROCESS FOR TREATMENT, the bulk masonry mixed in removal dregs, the in the process further removal
The lightweight thing mixed in dregs, after screening is finished, is individually deposited by the building waste dregs of separate sources.
(2)Former material quality is evaluated
The quality dregs such as take in each stockpile to be well mixed, taking dregs sample by quartering carries out laboratory test.
Taking dregs sample carries out indoor sieve test and combined measurement method of liquid and plastic limits experiment, and the screening situation of dregs see the table below:
Dregs level is matched somebody with somebody
Result is:This dregs is the particulate soil sand in coarse-grained soil(SF), water content 13.1%, liquid limit 27.7%, plastic limit 21.7%, modeling
Property index 6, nonuniform coefficent Cu=45, curve coefficientCc=1.0, it is steady that dregs complies fully with cement as the granulometric range of underlayment
Great soil group level is determined with requiring.
After testing, the content of organic matter 1.73% in dregs, less than 2% index;Sulphates content 0.225%, less than index
0.25%, need not be processed as cement stabilizing great soil group material.
(3)The composition design of cement stabilizing dregs:1.5MPa is not less than as standard with cement stabilizing dregs 7d compression strength, with
3%th, 4%, 5%, 6%, 7% cement dose carries out cement stabilizing dregs mix-design, and 5% cement dose is obtained through experimental analysis
Stabilization dregs 7d compression strength 2.2MPa meets requirement, takes 5% for optimal cement consumption, is that cement dose is with 0.5% gradient
4.5%th, 5%, 5.5% make a service test(Including:7d, 28d, 60d, 90d, 180d unconfined compression strength test, 28d antiscours
Experiment, 5 freezing and thawing tests of 28d, the experiment of 90d cleavage strengths, the experiment of 90d compression rebound modulus).
Unconfined compressive strength
Scour resistance
Cement dose | Average quality before washing away(g) | The average quality of loss(g) | Loss amount ratio(%) |
4.5% | 5429.3 | 20.13 | 0.37 |
5% | 5466.7 | 12.38 | 0.23 |
5.5% | 5458.8 | 5.77 | 0.11 |
Frozen-thawed cycled
Cleavage strength
Cement dose | The average cleavage strengths of 90d(Mpa) |
4.5% | 0.32 |
5% | 0.44 |
5.5% | 0.69 |
Compression rebound modulu
Cement dose | 90d compression rebound modulus(Mpa) |
4.5% | 766 |
5% | 826 |
5.5% | 934 |
The cement stabilizing great soil group material that above index is satisfied by code requirement is used for road subbase course requirement.
(4)Cement stabilizing dregs is carried out before production mixes and stirs using plant mixing method, feeding heap dregs inspection, granulometric range meets
Cement stabilizing great soil group level with requiring, water content 12.9%, liquid limit 26.4%, plastic limit 20.1%, plasticity index 6.3, nonuniformity coefficient:
Cu=44, coefficient of curvature:Cc=0.48, organic matter and sulphates content are less than control standard.
According to early stage the laboratory results, examination is designed with the composition of the making cement of cement dose 5%, 5.5%, 6% stabilization dregs
Test, as a result such as following table:
Accordingly, it is determined that the cement dose 6% of plantmix's cement stabilizing dregs, cement stabilizing dregs optimum moisture content 14.4%, maximum dry
Density 1.842g/cm3.Production is carried out with actual cement dose 6.5% to mix and stir, because of dregs, water content is higher in itself, adds when mixing and stirring
Water need to be controlled strictly, it is to avoid cement stabilizing dregs water content is too high.
(5)Scene uses two pavers to combine and paves, it is impossible to the position paved using paver, using Manual,
Determine that coefficient of loose laying is 1.375 by experimental section.
On-site rolling is combined as:Rolled 1 ~ 2 time using 12t pneumatic-tired rollers preliminarily stabiliseds, used after compound preliminarily stabilised
The vibrated roller of 20t shakes pressure 2 ~ 3 times, finally rolls 2 ~ 3 times to surfacing, without wheelmark with 22t three-roll road rollers.
It is 1.823g/cm through the maximum dry density of field sampling detection compound3;Per 1000m2Random sampling observation a bit, is used
Sand replacement method detects compactness, and error is in prescribed limit;Water content is determined 14.4% ~ 15.8%, error is no more than 2%;Compacting
Degree is more than 95%.
(6)Using watering Curing Method, watering amount and watering number of times are adjusted according to weather at that time, period makes cement stabilizing slag
Soil layer surface remains moistening, and the making construction of superstructure is started after the completion of waiting to conserve.
Sampling shaping test piece mean intensity 2.18MPa in front court after maintenance 7d;Live core boring sampling is completely closely knit, and core sample is high
Degree meets code requirement, mean intensity 1.58MPa.
After maintenance 7d deflection testing, cement stabilizing dregs structure sheaf maximum deflection value are carried out per track by the measuring points of every 20m mono-
0.62mm, flexure typical value 0.53mm, hence it is evident that less than similar Lime-soil subbase.
Specific case used herein is set forth to principle of the invention and implementation method, and above example is said
It is bright to be only intended to help and understand the method for the present invention and its core concept.It should be pointed out that for the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improvement
Also fallen into the protection domain of the claims in the present invention with modification.
Claims (7)
1. the resource utilization process and method of a kind of dregs, it is characterised in that comprise the following steps:
(1)Building waste dregs raw material are sieved and deposited;
(2)Raw material evaluation and performance evaluation are carried out to dregs;
(3)Composition design experiment is carried out as cementitious matter using cement, cement stabilizing dregs structure sheaf intensity presses cement stabilized soil
Underlayment intensity requirement is controlled, and determines the control cement dose of cement stabilizing dregs;
(4)Production is carried out using plant mixing method to cement stabilizing dregs to mix and stir;
(5)Water loss is reduced in transportation as far as possible, while being not up to cement stabilizing dregs before ensureing mixture laying
Presetting period;
(6)Cement stabilizing dregs paves and uses machine spreading, it is determined that suitable coefficient of loose laying is reaching design thickness requirement;
(7)Suitable compaction assembly is selected, compactness design requirement is reached, after the completion of rolling, cement stabilizing dregs base layer surface
It is smooth;
(8)By the way of health of sprinkling water, weather adjustment watering amount and watering number of times during according to construction, period make cement stabilizing
Dregs layer surface remains moistening, and the making construction of superstructure is started after the completion of waiting to conserve.
2. the resource utilization process and method of a kind of dregs according to claim 1, it is characterised in that the step
(1)In dregs raw material refer to remove produced spoir during all kinds of buildings and resident's decorations house, abandon
Material.
3. the resource utilization process and method of a kind of dregs according to claim 1, it is characterised in that the step
(1)In dregs raw material refer to the mixed class building waste of brick using the pre-processing device of specialty carry out pre-screening generation soil and
The soil that is further screened out in the mixed class construction waste crushing of the impurity and brick of fine granules, screening process and fine granules mix
Thing, and remove and be mixed in debris, light materials and the bulk masonry such as wood chip, iron filings in dregs material.
4. the resource utilization process and method of a kind of dregs according to claim 1, it is characterised in that the step
(2)Material property is analyzed, including the physicochemical property of dregs material, water content, liquid limit, plastic limit, plasticity index, particle composition
Deng.
5. the resource utilization process and method of a kind of dregs according to claim 1, it is characterised in that the step
(1)In dregs engineering classification on belong to coarse-grained soil category, the content that it is less than 0.6mm particles be less than 30%, liquid limit be less than 40%, modeling
Sex index is not more than 17, can carry out stabilization using cement.
6. the resource utilization process and method of a kind of dregs according to claim 1, it is characterised in that the step
(3)In cement dose control 4% ~ 7%.
7. the resource utilization process and method of a kind of dregs according to claim 1, it is characterised in that the step
(5)Middle road subbase course construction is paved using paver.
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Cited By (5)
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CN109956686A (en) * | 2017-12-22 | 2019-07-02 | 广西华润红水河水泥有限公司 | The processing method of architecture sediment in building castoff |
CN110331641A (en) * | 2019-07-09 | 2019-10-15 | 深圳市市政工程总公司 | The steady construction method of road recycled water |
CN111559887A (en) * | 2020-05-12 | 2020-08-21 | 中交上海航道勘察设计研究院有限公司 | Backfill material for local erosion pit under strong current condition |
CN114133166A (en) * | 2021-10-13 | 2022-03-04 | 上海志昌建设工程有限公司 | Large-scale resource utilization method for engineering muck |
CN115807366A (en) * | 2022-11-03 | 2023-03-17 | 深圳宏垚环保科技有限公司 | Roadbed construction method for recycling premixed solidified soil from aggregate-containing filling screening tailings |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109956686A (en) * | 2017-12-22 | 2019-07-02 | 广西华润红水河水泥有限公司 | The processing method of architecture sediment in building castoff |
CN110331641A (en) * | 2019-07-09 | 2019-10-15 | 深圳市市政工程总公司 | The steady construction method of road recycled water |
CN111559887A (en) * | 2020-05-12 | 2020-08-21 | 中交上海航道勘察设计研究院有限公司 | Backfill material for local erosion pit under strong current condition |
CN114133166A (en) * | 2021-10-13 | 2022-03-04 | 上海志昌建设工程有限公司 | Large-scale resource utilization method for engineering muck |
CN115807366A (en) * | 2022-11-03 | 2023-03-17 | 深圳宏垚环保科技有限公司 | Roadbed construction method for recycling premixed solidified soil from aggregate-containing filling screening tailings |
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