CN106830777B - The regeneration fill concrete of consumer waste incineration residue preparation and its application - Google Patents

The regeneration fill concrete of consumer waste incineration residue preparation and its application Download PDF

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CN106830777B
CN106830777B CN201611176907.9A CN201611176907A CN106830777B CN 106830777 B CN106830777 B CN 106830777B CN 201611176907 A CN201611176907 A CN 201611176907A CN 106830777 B CN106830777 B CN 106830777B
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concrete
regeneration
incineration residue
waste incineration
fill concrete
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CN106830777A (en
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李少强
陈国谦
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Shenzhen Guangtian Group Ltd By Share Ltd
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Shenzhen Guangtian Group Ltd By Share Ltd
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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
    • 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
    • C04B28/14—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 calcium sulfate cements
    • C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • 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

Abstract

The invention discloses a kind of regeneration fill concrete of consumer waste incineration residue preparation and its applications, belong to regeneration fill concrete preparation field.Above-mentioned regeneration fill concrete is grouped as by the group of following parts by weight: domestic waste incineration residue 30-40 parts by weight, building waste 30-40 parts by weight, fine aggregate 30-40 parts by weight, agstone 5-10 parts by weight, cement 5-10 parts by weight, concrete admixture 0.03-1 parts by weight.The present invention forms optimum gradation using the substance of different-grain diameter, the selection of the specified particle diameter of each component compared with the substance of small particle so that be filled into the gap of upper level partial size the cementability enhanced between partial sizes at different levels in preparation process in mixed process, reduce the gap in concrete, greatly improves concrete crushing strength and durability.To sum up, the present invention is successfully prepared the regeneration fill concrete of high solid waste content, has many advantages, such as that solid waste utilization rate is high, compression strength is high, while also reducing the occupied area of solid waste, economizes the land resource.

Description

The regeneration fill concrete of consumer waste incineration residue preparation and its application
Technical field
It is the present invention relates to regeneration fill concrete preparation field, in particular to a kind of to be prepared using consumer waste incineration residue Regeneration fill concrete and its application.
Background technique
With the quickening of urbanization process, the yield of domestic waste is significantly increased.According to statistics, by the end of 2010 I State's domestic waste annual output has reached 3.52 hundred million tons, and for rubbish volume of cargo in storage up to more than 70 hundred million tons, the whole nation has 2/3 city to fall into Among the encirclement of rubbish.Garbage incineration technology can make 90% or more house refuse volume reduction, Mass lost 70% or so, in rubbish Electric energy can also be obtained while burning decrement, therefore, incineration method is considered as a kind of side that house refuse can be effectively treated Method.However, waste incineration can generate the incineration slag (clinker and flying dust) of about 30% (mass fraction), wherein clinker accounts for 80%, furnace Slag has pozzolanic activity, may be used as the polymeric material in concrete.
According to China " consumer waste incineration contamination control standard " (GB18485-2001), clinker can by " solid it is useless Object " is handled, and therefore, current most of clinkers use landfill disposal, does not only take up a large amount of land resource and landfill expense With huge.On the other hand, the current concrete year output in China is more than 35 billion cubic meters, needs to consume natural aggregate (sandstone) 6000000000 tons, the consumption of brought ore resource, the energy in aggregate production use process, and the pollution of atmosphere and environment is asked Topic has caused the common concern of global range.Consumer waste incineration residue and cement in chemical component relatively, tool There is gel active, can be used as cementing material, part substitutes the cement in concrete.For this purpose, many scientific research personnel attempt in coagulation Municipal solid waste incineration clinker is utilized in soil, the feasibility and explore raising clinker substitution rate that analysis clinker recycles Measure etc..
Building waste refers to that construction, unit in charge of construction or individual build all kinds of buildings, structures, pipe network etc., spread If or removing, generated dregs, spoir, rejected material, remaining mud and other wastes in reparative processes.Building waste refer to people from Thing removes, construction, finishing, repair etc. the dregs generated in the production activity of construction industries, waste and old concrete, waste and old masonry and other The general designation of waste.Classify by generating source, building waste can be divided into engineering dregs, decoration garbage, removal rubbish, engineering slurry Deng；Classify by constituent, can be divided into building waste dregs, concrete block, crushed stone, brick and tile fragment, waste mortar, mud, Asphalt blocks, waste plastics, old metal, useless bamboo wood etc..
Compared with other municipal refuses, the building waste amount of having the characteristics that is big, nontoxic and resourcebility rate is high.It is big absolutely Most building wastes can be used as regenerated resources re-using, and such as: old metal can melt down again is processed into various specifications Steel；Useless bamboo wood, sawdust etc. can be used for manufacturing various artificial boards；The waste materials such as brickbat, concrete block can replace after crushing Sand directly utilizes at the construction field (site), for masonry mortar, plastering mortar, disturbing concrete etc., it is also possible to be built with making building block etc. Material product etc..
The aggregate abbreviation recycled aggregate that recycled concrete aggregate is formed after crushing, cleaning and grading；Recycled aggregate part Or all it is known as regenerated aggregate concrete instead of the concrete that the natural aggregates such as sandstone are formulated.Make full use of recycled aggregate mixed Solidifying soil, can not only be effectively reduced the quantity of building waste, reduce pollution of the building waste to natural environment, meanwhile, utilize regeneration Aggregate manufacture regenerated aggregate concrete also can be reduced the exploitation in architectural engineering to natural aggregate, reach the mesh of protection environment 's.
But it is numerous research shows that the compression strength of regenerated aggregate concrete and the close phase of the substitution rate of recycled aggregate It closes, when recycled aggregate substitution rate is below 30%, regenerated aggregate concrete and general aggregate concrete compression strength gap are not Greatly, regenerated aggregate concrete compression strength is reduced with the increase of recycled aggregate substitution rate.Recycled aggregate 50% replaces naturally When coarse aggregate, regenerated aggregate concrete compression strength reduces by 5%~20% and differs, when recycled aggregate 100% replaces natural thick bone When material, the reduction of regenerated aggregate concrete compression strength is more, and maximum decreases by 30%.Meanwhile correlation test shows: due to again The aggregate element of raw aggregate concrete and natural aggregate concrete is different, their compression strength with age growth pattern also not phase Together, compared with natural aggregate concrete, the 28d compression strength about low 15% of the regenerated aggregate concrete of the same ratio of mud, but its The amplitude of difference can slowly be reduced with the growth of age.Regenerated aggregate concrete compression strength is influenced very by the ratio of mud Greatly, regenerated aggregate concrete increases with the ratio of mud, and compression strength drastically reduces.The ratio of mud averagely increases by 0.1, compression strength decline 20% or so.
Meanwhile the tensile strength of regenerated aggregate concrete and the substitution rate of recycled aggregate are closely related, recycled aggregate coagulation The tensile strength of soil is reduced with the raising of the substitution rate of recycled aggregate, when recycled aggregate 100% substitutes natural aggregate, regeneration Aggregate concrete, which compares natural aggregate concrete tensile strength, reduces by 6.9.Numerous researchers are strong to regenerated aggregate concrete tension For degree with the raising of recycled aggregate substitution rate, the resulting result of strength reduction is although discrete, but summarizes numerous research achievements, and discovery is again The tensile strength of raw aggregate concrete by the substitution rate of recycled aggregate influenced there is no compression strength it is big, therefore, using pressure resistance The 10% of degree is than more conservative and relatively safe as the tensile strength of regenerated aggregate concrete.
The building wastes such as brick, stone, concrete are adulterated and are attached in backfill material if directly carrying out backfilling of earthwork For underground water and soil poisonous and harmful substances -- coating, paint, glue etc. largely exist.If expected at the scene again backfill Secondary to be handled, in addition to scene does not have the factors such as machinery, technology, the processing cost of cumbersome processing mode and great number can be incited somebody to action Most of units in charge of construction are blocked in except the gate of regeneration treatment mode；If by this part, rubbish is fabricated to building material, and The preceding factory being recycled to building waste is fewer and fewer, even if having, in face of the freight of great number is blocked in again, and institute With final or one has buried it.
The technology of concrete is prepared about the clinker or building waste for using consumer waste incineration, in the prior art by Relevant report:
CN104628281A discloses a kind of consumer waste regenerated disposing technique and its regeneration fill concrete product, including Following steps: (1) it collects；(2) selection by winnowing；(3) level-one is broken；(4) magnetic separation；(5) wet concentration；(6) two-stage crushing obtains 5~25mm Rubble product.It also discloses using regeneration backfill made of rubble product made of above-mentioned consumer waste regenerated disposing technique Concrete product.The manufacture craft for the consumer waste regenerated disposing technique that the invention provides is simple, it is easy to accomplish, it can solve life Construction refuse regenerated Utilizing question, and quick Fabrication goes out to be suitable for the rubble product of construction material, is made of the invention product Building structural strength it is good, load-bearing capacity is big, long service life, and from heavy and light, low in cost, simple processing meets ring It protects, economic characteristics, production procurement is convenient, improves competitiveness, with good economic efficiency and social benefit.
CN104591638B discloses a kind of method using house refuse power generation waste residue production multifunctional concrete.It will give birth to Garbage power waste residue and natural sand living are mixed to get mixed sand；The waste residue that partial size is greater than the power generation of 5mm house refuse is mixed with rubble It closes, obtains mixing rubble；Natural zeolite powder is mixed with brucite fiber, the early strong cracking resistance autogenous curing agent of thickening is made；By poly- carboxylic Sour high efficiency water reducing agent is mixed with mineral superfine powder, obtains liquid diminishing plasticity-maintaining agent；By cement, flyash, silicon powder, miberal powder, increasing Thick morning strong cracking resistance autogenous curing agent, mixed sand, mixing rubble mass ratio weigh, and successively pour into blender and stir evenly, obtain more function It can concrete.The concrete of this method preparation has self-compaction, Self-curing, low hydration heat, lower shrinkage, high-durability and high guarantor The performance of plasticity, for the application such as architectural engineering, civil engineering, traffic engineering and city construction engineering, this method has very high Economic benefit and social benefit.
CN102296742B discloses a kind of concrete brick that shines made of building waste and the clinker of house refuse, by Surface layer and basal layer composition, being covered at least part surface on the surface layer includes shining for noctilucence or fluorescent material Layer, is covered with protective film, the protective film includes the component of following weight percent, colloidal silicon dioxide on the light-emitting layer 9-12%, siloxanes 9-13%, polyethers 11-15%, organic film former 3-4%, surplus are water, and the basal layer is building waste 30-50 parts by weight, house refuse clinker 10-20 parts by weight, cement are 8-15 parts by weight, river sand 10-20 parts by weight.The invention mentions The luminous concrete brick supplied not only has the function of shining, but also luminescent lifetime is long, and under solar exposure, noctilucence or fluorescence Substance is not easy to produce deterioration failure.Basal layer in the invention using building waste and house refuse clinker as aggregate, this Sample can greatly alleviate urban building waste and domestic rubbish disposal problem, it is also possible to save by construction material institute The contradiction that ground is striven with peasant is alleviated in the soil of consumption.
On the one hand, due to there is a large amount of domestic waste incineration residue and building waste etc. now, but in the prior art Solid waste additive amount is not higher than 70%, and the usage amount of natural component is higher, and it is main materials that there is an urgent need for a kind of with solid waste Product economizes on resources, and improves solid waste utilization rate；On the other hand, when solid waste content is higher, the concrete various aspects of performance of preparation It can be declined.
Summary of the invention
To solve to cause when solid waste content is high, the compression strength for regenerating fill concrete is reduced and solid waste utilization rate is low asks Topic, the present invention provide regeneration fill concrete and its application of a kind of preparation of consumer waste incineration residue.
In order to solve the above technical problems, present invention offer technical solution is as follows:
On the one hand, the present invention provides a kind of regeneration fill concrete of consumer waste incineration residue preparation, by following weight The group of part is grouped as:
The fine aggregate is desulfurized gypsum and/or flyash.
Preferably, the regeneration fill concrete of above-mentioned consumer waste incineration residue preparation, is grouped by the group of following parts by weight At:
Further, the domestic waste incineration residue obtains after screening, and partial size is 2.5~5mm, because waste incineration is residual Slag has pozzolanic activity, can replace part of cement or agstone.
Further, the building waste obtains after screening, and partial size is 5~25mm, serves as in regeneration fill concrete Coarse aggregate, play skeleton and support between floors.
Further, the partial size of the agstone is less than 30 μm, and the fineness of agstone can significantly affect it The activity of body, only in the case where fineness is certain, agstone will play activity, even if remaining in the case where large dosage So that concrete strength is promoted, concrete workability is significantly improved.This is because agstone particle is sufficiently fine, in cement In the gap that can enter hydrolysis product of cement when aquation, play the role of micro-aggregate, so that intensity is promoted, is playing While micro-aggregate acts on, agstone can promote C in hydrated cementitious due to its potential activity3S aquation, to concrete Strength enhancing equally play positive effect.And due to the hydrophily of agstone, in cement granules aquation, cement can will be made The cement group being condensed into when aquation breaks, and water is released, to improve the mobility of concrete mix.
The partial size of the cement is 10~60 μm, preferable to obtain durability by choosing the cement of specified particle diameter Concrete.
The partial size of the desulfurized gypsum is less than 2.5mm；The partial size of the flyash is less than 2.5mm.
Preferably, the building waste is waste and old concrete.
Preferably, the concrete admixture be one of water-reducing agent, early strength agent, water-retaining agent or a variety of, can be certain The dosage of cement is reduced in degree.
Preferably, the water-reducing agent is naphthalene sulfonate water-reducing agent, sulfonated melamine compound resin, aromatic amino sulphonic acid One of salt polymer, aliphatic hydroxyl sulphonate polymer are a variety of, and dosage is few, and water-reducing rate is high.In addition, art technology Personnel it is conceivable that high efficiency water reducing agent can apply in the present invention.
Preferably, the water-retaining agent is one of polyacrylamide, Sodium Polyacrylate, starch grafted acrylate or more Kind, while the common water-retaining agent of those skilled in the art can apply to the present invention.
On the other hand, the present invention provides a kind of preparation of the regeneration fill concrete of above-mentioned consumer waste incineration residue preparation Method includes the following steps:
Step 1: building waste and domestic waste incineration residue being added in blender, stirred evenly；
Step 2: fine aggregate is added into step 1 blender, stirs evenly；
Step 3: cement is added into step 2 blender, stirs evenly；
Step 4: agstone and concrete admixture being added into step 3 blender, stirs evenly, regeneration can be obtained Fill concrete.
Further, the regeneration fill concrete and water, which are mixed evenly, can be used, and the regeneration backfills coagulation The ratio of soil and water is 1:0.3~0.5.
In another aspect, answering the present invention also provides a kind of regeneration fill concrete of above-mentioned consumer waste incineration residue preparation With regeneration fill concrete prepared by the present invention can be used for ground in architectural process and backfill field.
Compared with the prior art, the present invention has the following beneficial effects:
The present invention is less than the desulfurization of 2.5mm with 2.5~5mm consumer waste incineration residue, 5~25mm building waste, partial size Gypsum and/or flyash are main component preparation regeneration fill concrete, with 10~60 μm of cement, lime of the partial size less than 10 μm Mountain flour and concrete admixture are that auxiliary material successfully prepares solid waste content and is up to 80~90%, compression strength and can reach The regeneration fill concrete of 49.9MPa.The substance of different-grain diameter forms optimum gradation, the specified particle diameter of each component in preparation process Selection so that the substance in mixed process compared with small particle is filled into the gap of upper level partial size.Since consumer waste incineration is residual Slag, flyash, agstone and cement are all active, and when adding water and stirring, four act on simultaneously, enhance between partial sizes at different levels Cementability reduces the gap in concrete, greatly improves concrete crushing strength and durability.To sum up, the present invention successfully makes For the regeneration fill concrete of high solid waste content, have many advantages, such as that solid waste utilization rate is high, compression strength is high, durability is good, together When also reduce the occupied area of solid waste, economize the land resource.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with specific implementation Example is described in detail.
The materials, reagents and the like used in the following examples is commercially available.
The present invention provides a kind of regeneration fill concrete of consumer waste incineration residue preparation, each material content refer to Lower embodiment.
Embodiment 1:
Embodiment 2:
Embodiment 3:
Embodiment 4:
Embodiment 5:
On the other hand, the present invention provides a kind of preparation of the regeneration fill concrete of above-mentioned consumer waste incineration residue preparation Method includes the following steps:
Step 1: building waste and domestic waste incineration residue being added in blender, stirred evenly；
Step 2: fine aggregate is added into step 1 blender, stirs evenly；
Step 3: cement is added into step 2 blender, stirs evenly；
Step 4: agstone and concrete admixture being added into step 3 blender, stirs evenly, regeneration can be obtained Fill concrete.
Further, the regeneration fill concrete and water, which are mixed evenly, can be used, and the regeneration backfills coagulation The ratio of soil and water is 1:0.3~0.5.
In another aspect, answering the present invention also provides a kind of regeneration fill concrete of above-mentioned consumer waste incineration residue preparation With regeneration fill concrete prepared by the present invention can be used for ground in architectural process and backfill field.
In order to further illustrate the feature and using effect of the regeneration fill concrete of consumer waste incineration residue preparation, only It is illustrated with embodiment 5 and corresponding comparative example.
Comparative example 1:
A kind of concrete is grouped as by the group of following parts by weight:
Comparative example 2:
A kind of concrete is grouped as by the group of following parts by weight:
Comparative example 3:
A kind of concrete is grouped as by the group of following parts by weight:
Comparative example 4:
A kind of concrete is grouped as by the group of following parts by weight:
The slump of the concrete of above-described embodiment and comparative example is measured, test result is shown in Table 1；By above-described embodiment and right The concrete of ratio is according to GB/T50081-2002 " standard for test methods of mechanical properties of ordinary concrete ", in standard curing item Under part, maintenance for 24 hours, then conserves 28 days under natural conditions, surveys its compression and tensile strength, the results are shown in Table 1.
Table 1
As seen from the above table, the concrete in regeneration fill concrete prepared by the present invention and comparative example 1~3 only uses The partial size of raw material is different, and the difference of the slump and compression strength that lead to the regeneration fill concrete of preparation is larger, it was demonstrated that only The various raw material gradations of specified particle diameter can just obtain mechanical property and preferably regenerate fill concrete.Compared with comparative example 4, preparation Regeneration fill concrete compared with from ready-mixed concrete, the two slump gap is smaller, it was demonstrated that the regeneration of preparation backfills coagulation The mobility of soil is preferable；Prepared by the compressive strength rate comparative example 4 of the regeneration fill concrete of preparation of the embodiment of the present invention mixes certainly The compression strength of concrete is slightly larger, meets the requirement of fill concrete in related specifications.
It is found through experiment that the present invention successfully prepares high solid waste content, it is with consumer waste incineration residue and building waste Cement, agstone, desulfurized gypsum and/or flyash and related concrete admixture, the object of different-grain diameter is added in main aggregate Matter forms optimum gradation, and the selection of the specified particle diameter of each component is so that the substance in mixed process compared with small particle is filled out in preparation process It is charged in the gap of upper level partial size.Since consumer waste incineration residue, flyash, agstone and cement are all active, When adding water and stirring, four act on simultaneously, enhance the cementability between partial sizes at different levels, reduce the gap in concrete, mention significantly High concrete compression strength and durability.
The experiment lifted is only preferable example of the invention, is not intended to limit the scope of protection of the present invention.It should refer to Out, for those skilled in the art, without departing from the principles of the present invention, can also make Several improvements and modifications, these modifications and embellishments should also be considered as the scope of protection of the present invention.

Claims (7)

1. a kind of regeneration fill concrete of consumer waste incineration residue preparation, which is characterized in that by the component of following parts by weight Composition:
The fine aggregate is desulfurized gypsum and/or flyash；
The building waste is waste and old concrete；
The domestic waste incineration residue obtains after screening, and partial size is 2.5~5mm；
The building waste obtains after screening, and partial size is 5~25mm；
The partial size of the agstone is less than 10 μm；
The partial size of the cement is 10~60 μm；
The partial size of the desulfurized gypsum is less than 2.5mm；
The partial size of the flyash is less than 2.5mm.
2. the regeneration fill concrete of consumer waste incineration residue according to claim 1 preparation, which is characterized in that by with The group of lower parts by weight is grouped as:
3. the regeneration fill concrete of consumer waste incineration residue preparation according to claim 1 or 2, which is characterized in that The concrete admixture is one or more of water-reducing agent, early strength agent, water-retaining agent.
4. the regeneration fill concrete of consumer waste incineration residue preparation according to claim 3, which is characterized in that described Water-reducing agent is naphthalene sulfonate water-reducing agent, sulfonated melamine compound resin, aromatic amino sulphonic acid salt polymer, aliphatic hydroxyl One or more of sulfonate polymer；
The water-retaining agent is one or more of polyacrylamide, Sodium Polyacrylate, starch grafted acrylate.
5. the preparation side of the regeneration fill concrete of consumer waste incineration residue preparation according to any one of claims 1 to 4 Method, which comprises the steps of:
Step 1: building waste and domestic waste incineration residue being added in blender, stirred evenly；
Step 2: fine aggregate is added into step 1 blender, stirs evenly；
Step 3: cement is added into step 2 blender, stirs evenly；
Step 4: agstone and concrete admixture being added into step 3 blender, stirs evenly, regeneration backfill can be obtained Concrete.
6. the regeneration fill concrete application method of consumer waste incineration residue preparation according to any one of claims 1 to 4, It is characterized in that, the regeneration fill concrete and water are mixed evenly；
The ratio of the regeneration fill concrete and water is 1:0.3~0.5.
7. the application of the regeneration fill concrete of consumer waste incineration residue preparation according to any one of claims 1 to 4, It is characterized in that, backfills field for ground in architectural process.
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