CN112299779A - Inorganic mixture and preparation method thereof - Google Patents
Inorganic mixture and preparation method thereof Download PDFInfo
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- CN112299779A CN112299779A CN202011093795.7A CN202011093795A CN112299779A CN 112299779 A CN112299779 A CN 112299779A CN 202011093795 A CN202011093795 A CN 202011093795A CN 112299779 A CN112299779 A CN 112299779A
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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
- C04B28/04—Portland cements
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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
- 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
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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
- 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
- C04B18/165—Ceramic waste
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- 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
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an inorganic mixture and a preparation method thereof, wherein the inorganic mixture comprises the following components in parts by weight: 10-38 parts of waste ceramic tile fine aggregate, 55-86 parts of construction waste recycled aggregate, 4-7 parts of cement and 5-9 parts of water; the particle size of the waste ceramic tile fine aggregate is more than 0 and less than or equal to 5mm, the construction waste recycled aggregate comprises first-grade aggregate, second-grade aggregate and third-grade aggregate, the particle sizes of the first-grade aggregate, the second-grade aggregate and the third-grade aggregate are respectively more than 0 and less than or equal to 5mm, more than 5 and less than or equal to 10mm, more than 10 and less than or equal to 31.5mm, and the weight ratio of the waste ceramic tile fine aggregate to the first-grade aggregate to the second-grade aggregate to the third-grade aggregate is (3.8-4.2): (1.8-2.2): (3.8-4.2). The inorganic mixture prepared by using the waste tile building garbage has excellent mechanical property and obviously enhanced durability, and is a novel green and environment-friendly building material.
Description
Technical Field
The invention relates to the technical field of construction waste recycling, in particular to an inorganic mixture and a preparation method thereof.
Background
With the continuous and deep urbanization development of China, the requirements of people on living environment are continuously improved, the indoor building construction is more frequent, the quantity of the generated building garbage is large, and the generation quantity is rapidly increased. Ceramic materials, including ceramic tiles and other ceramic products, are relatively large in construction waste. At present, most of waste ceramics in China are treated by open-air stacking or simple crushing and burying modes, which not only occupies land but also pollutes environment and does not meet the development requirement of 'non-waste cities'.
The inorganic mixture is a general name of a road building material in traffic transportation engineering, and is used for building a road base layer or a subbase layer. The preparation of common inorganic mixture needs to consume a large amount of natural sandstone, which not only has expensive raw materials, but also causes damage to the natural environment. With the increasing demand for construction subgrade design and construction materials, it is necessary to explore natural sandstone substitute materials from solid wastes.
Therefore, how to prepare an inorganic mixture which has excellent mechanical properties and obviously enhanced durability and takes natural sandstone as a raw material becomes a technical problem for technicians in the field.
Disclosure of Invention
The invention aims to provide an inorganic mixture and a preparation method thereof, which utilize waste tile building garbage to realize green recycling, and the prepared inorganic mixture has excellent mechanical property and obviously enhanced durability and is a novel green and environment-friendly building material.
In order to achieve the purpose, the invention provides an inorganic mixture, which comprises the following components in parts by weight: 10-38 parts of waste ceramic tile fine aggregate, 55-86 parts of construction waste recycled aggregate, 4-7 parts of cement and 5-9 parts of water; the particle size of the waste ceramic tile fine aggregate is more than 0 and less than or equal to 5mm, the construction waste recycled aggregate comprises first-grade aggregate, second-grade aggregate and third-grade aggregate, the particle sizes of the first-grade aggregate, the second-grade aggregate and the third-grade aggregate are respectively more than 0 and less than or equal to 5mm, more than 5 and less than or equal to 10mm, more than 10 and less than or equal to 31.5mm, and the weight ratio of the waste ceramic tile fine aggregate to the first-grade aggregate to the second-grade aggregate to the third-grade aggregate is (3.8-4.2): (1.8-2.2): (3.8-4.2).
Further, the weight ratio of the first size fraction aggregate, the second size fraction aggregate and the third size fraction aggregate is 4: 2: 4.
further, the weight of the waste ceramic tile fine aggregate accounts for 25% -100% of the total weight of the waste ceramic tile fine aggregate and the first size fraction aggregate.
Further, the waste ceramic tile fine aggregate meets the following conditions: the fineness modulus is 2.3-3.5, and the bulk density is 1300-1400 kg/m2The apparent density is 2400-2500 kg/m2The porosity is less than 48% and the crush value is less than 25%.
Further, the cement is a portland cement.
Further, the ratio of the total mass of the construction waste recycled aggregate and the waste tile fine aggregate to the mass of the water is 100: (5-9).
Further, the density of the inorganic mixture is 1.9-2.2 g/cm3。
The invention also provides a preparation method of the inorganic mixture, which comprises the following steps:
respectively carrying out pre-wetting treatment on 10-38 parts of waste ceramic tile fine aggregate and 55-86 parts of construction waste recycled aggregate to obtain pre-wetted waste ceramic tile fine aggregate and pre-wetted construction waste recycled aggregate;
uniformly mixing 4-7 parts of cement and 5-9 parts of water to obtain a gel;
uniformly mixing the pre-wetted waste ceramic tile fine aggregate, the pre-wetted construction waste recycled aggregate and the gel to obtain a mixture;
and sequentially filling the mixture into a mold, forming and maintaining to obtain the inorganic mixture.
Further, the curing temperature is 18-22 ℃, and the curing humidity is more than or equal to 95% RH.
The invention provides application of the inorganic mixture in preparation of urban road subgrade, subbase and base course.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
according to the inorganic mixture and the preparation method thereof provided by the invention, the waste ceramic tiles in the construction waste are used as raw materials to prepare the inorganic mixture, and the traditional inorganic mixture using crushed stone and the like as raw materials is replaced, so that the cost can be effectively reduced. But the surface of the waste ceramic tile is smooth, the inorganic mixture prepared from the waste ceramic tile as the recycled coarse aggregate is difficult to be adhered and stable during molding, and has poor mechanical property and durability, and the use requirements of urban road base layers and subbase layers are not met, so the invention further prepares fine aggregate with reasonable gradation by crushing and shaping the waste ceramic tile selected from the building waste, and applies part or all of the fine aggregate to the inorganic mixture for roads instead of machine-made sand, wherein the proper mixture is selected from 10-38 parts of the fine aggregate of the waste ceramic tile, 55-86 parts of the recycled aggregate of the building waste, 4-7 parts of cement and 5-9 parts of water; utilize the glossy characteristic in waste ceramic tile granule surface, reduce the water consumption when guaranteeing the workability, waste ceramic tile class building rubbish has been solved, the recycled aggregate comprehensive properties after the direct breakage is poor, be difficult to the problem of resource application, it is good to realize the mechanical properties of inorganic combination stabilizer of ceramic tile class simultaneously, improve the freezing resistance of inorganic combination stabilizer simultaneously, and then can utilize the ceramic tile class discarded object resource that produces among the building rubbish to road bed or the underlayment in, realize the green of ceramic tile class discarded object and consume, utilize, certain economic benefits has when meeting the circular economy development requirement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flow chart of a preparation method of an inorganic mixture provided in embodiment 1 of the present invention.
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 obtained by an existing method. The words "first", "second", "third", etc. referred to in this disclosure do not denote any order, but rather are to be construed to mean a noun. In the invention, the grain diameter of 0-5mm means that d is more than 0 and less than or equal to 5mm, the grain diameter of 5-10mm means that d is more than 5 and less than or equal to 10mm, and the grain diameter of 10-31.5mm means that d is more than 10 and less than or equal to 31.5 mm.
The embodiment of the invention provides an inorganic mixture, which has the following general idea:
the embodiment of the invention provides an inorganic mixture, which comprises the following components in parts by weight: 10-38 parts of waste ceramic tile fine aggregate, 55-86 parts of construction waste recycled aggregate, 4-7 parts of cement and 5-9 parts of water; the particle size of the waste ceramic tile fine aggregate is more than or equal to 0 and less than 5mm, the construction waste recycled aggregate comprises first-grade aggregate, second-grade aggregate and third-grade aggregate, the particle sizes of the first-grade aggregate, the second-grade aggregate and the third-grade aggregate are respectively more than 0 and less than or equal to 5mm, more than 5 and less than or equal to 10mm, more than 10 and less than or equal to 31.5mm, and the weight ratio of the waste ceramic tile fine aggregate to the first-grade aggregate to the second-grade aggregate to the third-grade aggregate is (3.8-4.2): (1.8-2.2): (3.8-4.2).
According to the embodiment of the application, the waste ceramic tiles in the construction waste are used as raw materials to prepare the inorganic mixture, and the traditional inorganic mixture taking broken stones and the like as raw materials is replaced, so that the cost can be effectively reduced. But the surface of the waste ceramic tile is smooth, the inorganic mixture prepared by the waste ceramic tile as the recycled coarse aggregate is difficult to be adhered and stable during molding, and the mechanical property and the durability are poor, so that the use requirements of urban road base layers and subbase layers are not met. In order to further solve the problems that the waste ceramic tile type construction waste is poor in comprehensive performance and difficult to be recycled after being directly crushed, the mechanical property of the inorganic bonding stabilizing material of the ceramic tile type is excellent, the frost resistance of the inorganic bonding stabilizing material is improved, the ceramic tile type waste generated in the construction waste can be recycled into a road base layer or a subbase layer, the green absorption and utilization of the ceramic tile type waste are realized, the requirement of circular economy development is met, and meanwhile, certain economic benefits are achieved, in the embodiment of the invention, 10-38 parts of waste ceramic tile fine aggregate, 55-86 parts of construction waste recycled aggregate, 4-7 parts of cement and 5-9 parts of water are prepared into an inorganic mixture; the cement can play a role in stabilizing and curing the aggregate in the inorganic mixture, so that the cement in the inorganic bonding stabilizing material is fully hydrated, the workability is ensured, the water consumption is controlled, the water-cement ratio is reduced, and the mechanical property and the durability of the inorganic bonding stabilizing material are ensured to be good.
The reasons for selecting 10-38 parts of waste ceramic tile fine aggregate and 55-86 parts of construction waste recycled aggregate are as follows: the waste ceramic tile fine aggregate is used as a dense framework of an inorganic combined stabilizing material, the aggregate accounts for up to 40% of the total aggregate mass, and the aggregate has a supporting effect, and the mass ratio is (10-38): (55-86) the cement and the water can be fully combined under the action of the cement and the water; the reason why the particle size of the fine aggregate of the waste ceramic tile is controlled to be 0 to 5mm is that: smooth glaze surfaces exist on the surfaces of the building waste ceramic tile aggregates, and the large-particle-size waste ceramic tile aggregates are difficult to be stably bonded by cement, so that the particle size range of the large-particle-size waste ceramic tile aggregates is controlled to be 0-5 mm.
The weight ratio of the waste ceramic tile fine aggregate to the first size fraction aggregate to the second size fraction aggregate to the third size fraction aggregate is (3.8-4.2): (1.8-2.2): (3.8-4.2), preferably 4: 2: 4, the reason for the setting is that: the selection of the three particle sizes is determined according to the requirements of the national standards of GBT 25177-2010 and GBT 25176-2010 on the particle size division of the single-particle-grade aggregate. The aggregate mixture in this ratio has the highest bulk density and the lowest inorganic binder porosity, and therefore has the best mechanical properties and durability.
In a preferred embodiment, the weight of the waste tile fine aggregate is 25 to 100% of the total weight of the waste tile fine aggregate and the first size fraction aggregate. The mixing amount of the fine aggregate of the ceramic tile is too small, the mixing water of inorganic materials is difficult to reduce, the pores of the aggregate of the ceramic tile are few, the mixing amount is too small, the compactness of the inorganic binder is difficult to improve, and the durability is not obviously improved.
As a preferred embodiment, the ratio of the total mass of the construction waste recycled aggregate and the waste tile fine aggregate to the mass of the water is 100: (5-9). Therefore, the cement in the inorganic bonding stabilizing material can be further fully hydrated, the water consumption is controlled, the water-cement ratio is reduced, and the mechanical property and the durability of the inorganic bonding stabilizing material are good.
As a preferred embodiment, the waste ceramic tile fine aggregate satisfies the following conditions:
the fineness modulus is 2.3-3.5, the fineness modulus selection range is the range of the fineness modulus of medium sand coarse according to the requirements of national standard GBT 25176-2010 on fine sand, medium sand and coarse sand, the cement can fill fine gaps more fully, and the stability of the inorganic binder is facilitated.
The bulk density is 1300-1400 kg/m2The apparent density is 2400-2500 kg/m2The porosity is less than 48 percent, the fine aggregate of the waste ceramic tile is hard, the particle size is relatively large after being crushed, and the packing density and the porosity meet the minimum requirements of the embodiment of the invention in order to ensure the compactness of the inorganic mixture prepared by using the fine aggregate.
The crush value is less than 25%; the waste ceramic tile fine aggregate is used as a compact framework of the inorganic bonding stabilizing material, the aggregate accounts for 40 percent of the total aggregate mass at most, and the crushing value of the ceramic tile fine aggregate meets the lowest limit requirement in the invention in order to play a role in supporting the aggregate and ensure the mechanical property of the inorganic bonding stabilizing material.
As a preferred embodiment, the cement is P.O 42.5.5 ordinary portland cement conforming to the general portland cement GB 175-2007.
Preferably, the density of the inorganic mixture is 1.9-2.2 g/cm3Indicating that the inorganic compound is within the density range of typical inorganic binders.
According to another exemplary embodiment of the present invention, there is provided a method for preparing an inorganic compound, as shown in fig. 1, including:
s1, respectively carrying out pre-wetting treatment on 10-38 parts of waste ceramic tile fine aggregate and 55-86 parts of construction waste recycled aggregate to obtain pre-wetted waste ceramic tile fine aggregate and pre-wetted construction waste recycled aggregate;
s2, uniformly mixing 4-7 parts of cement and 5-9 parts of water to obtain a gel;
s3, uniformly mixing the pre-wetted waste ceramic tile fine aggregate, the pre-wetted construction waste recycled aggregate and the gel to obtain a mixture;
and S4, sequentially filling the mixture into a mold, molding and maintaining to obtain the inorganic mixture.
The pre-wetting treatment in the step S1 is an essential step, and aims to ensure that the building garbage recycled aggregate has strong water absorption, and the water-cement ratio of the inorganic material can be kept stable by adding water in a corresponding proportion after pre-wetting.
In the step S4, the curing temperature is 18-22 ℃, and the curing humidity is not less than 95% RH.
An inorganic composition according to the present application will be described in detail with reference to examples, comparative examples and experimental data.
The composition of each group is shown in table 1.
TABLE 1 compounding ratio of inorganic mixture for each group
The indexes of the inorganic compounds prepared in each group are shown in table 2.
TABLE 2 basic Properties of the respective groups of inorganic mixtures
From the data in table 2, it can be seen that:
in the comparative example 1, 0-5mm waste tile aggregate is not added, the optimal moisture content of the prepared inorganic mixture is up to 12.1%, and the residual strength of the regenerated inorganic mixture after 5 times of freeze-thaw cycle is only up to 85.2%;
in comparative example 2, the weight ratio of the total weight of the waste tile fine aggregate and the first size fraction aggregate to the weight of the second size fraction aggregate and the third size fraction aggregate was 3.6: 2.2: 4.2, the aggregate with the thickness of 0-5mm is smaller than the range of the invention, the optimal water content of the prepared inorganic mixture is 9.7 percent, and the residual strength of the waste ceramic tile inorganic mixture after 5 times of freeze-thaw cycles is 85.4 percent;
in comparative example 3, the weight ratio of the total weight of the waste tile fine aggregate and the first size fraction aggregate to the weight of the second size fraction aggregate and the third size fraction aggregate was 4.4: 1.8: 3.8, the aggregate with the thickness of 0-5mm is larger than the range of the invention, the optimal water content of the prepared inorganic mixture is up to 9.6 percent, and the residual strength of the waste tile inorganic mixture after 5 times of freeze-thaw cycle is only up to 86.3 percent;
in examples 1 to 5, the maximum dry density and the optimum water content were both slightly lowered as the amount of the fine aggregate added to the waste tiles was increased. The unconfined compressive strength of each group of samples 7d in the embodiment is basically kept at the same level as that of a comparative example, which shows that the mixing water consumption can be reduced by increasing the mixing amount of waste tiles, and the mechanical property of the inorganic mixture is not obviously reduced. The 7d unconfined compressive strength of the waste tile inorganic stable binder slightly increases with the increase of the cement mixing amount.
In example 6, the weight ratio of the total weight of the waste tile fine aggregate and the first size fraction aggregate to the weight of the second size fraction aggregate and the third size fraction aggregate was 4: 2: 4, in the range of the invention, the weight of the waste ceramic tile fine aggregate accounts for less than 25 percent of the total weight of the waste ceramic tile fine aggregate and the first particle size aggregate, the optimal moisture content of the prepared inorganic mixture is up to 9.4 percent, and the residual strength of the waste ceramic tile inorganic mixture after 5 times of freeze-thaw cycles is up to 87.5 percent; the inorganic binder has the defects of high water-gel ratio and low structural compactness, and the frost resistance is inferior to that of the inorganic binder in examples 1-5.
As can be seen from the analysis of the comparative example and the examples 1 to 6, the residual strength ratio of the waste ceramic tile inorganic mixture after 5 times of freeze-thaw cycles is remarkably improved along with the increase of the fine aggregate content of the waste ceramic tile. The inorganic binder of waste tiles has less internal defect pores under low water-cement ratio, the inside of the formed material is compactly combined, and the freezing resistance is greatly improved.
Through one or more embodiments provided by the embodiments of the present invention, at least the following technical effects or advantages are achieved:
at present, the urbanization development of China is deepened continuously, the indoor building construction is more frequent, the quantity of the building garbage including the ceramic tiles and other ceramic products is large, and certain potential safety hazards exist when the building garbage is piled or broken in the open air or is buried. The inorganic mixture is prepared by crushing and shaping the waste ceramic tiles to prepare the recycled fine aggregate, so that a reasonable resource utilization way is found for the ceramic tile type construction waste, and the development requirement of a waste-free city is met.
The inorganic mixture added with the waste ceramic tile fine aggregate in the embodiment of the invention meets the regulations of all road base layers and subbase layers in JTG/T F20-2015 Fine construction technology for road pavement base and JC/T2281 and 2014 inorganic mixture for recycling building waste aggregates for roads, and has strong practicability and simple preparation method.
The waste ceramic tile fine aggregate particles in the embodiment of the invention have excellent particle shape and smooth surface, the mixing water required by using the cement-stabilized inorganic mixture is greatly reduced, the water-cement ratio is effectively reduced, the interior of the formed material is tightly combined, the internal defect pores are few, and the freezing resistance is greatly improved.
The invention greatly utilizes the waste tile building garbage, realizes green recycling, and the prepared inorganic mixture has excellent mechanical property and obviously enhanced durability, thereby being a novel green and 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 inorganic mixture is characterized by comprising the following components in parts by weight: 10-38 parts of waste ceramic tile fine aggregate, 55-86 parts of construction waste recycled aggregate, 4-7 parts of cement and 5-9 parts of water; the particle size of the waste ceramic tile fine aggregate is more than 0 and less than or equal to 5mm, the construction waste recycled aggregate comprises first-grade aggregate, second-grade aggregate and third-grade aggregate, the particle sizes of the first-grade aggregate, the second-grade aggregate and the third-grade aggregate are respectively more than 0 and less than or equal to 5mm, more than 5 and less than or equal to 10mm, more than 10 and less than or equal to 31.5mm, and the weight ratio of the waste ceramic tile fine aggregate to the first-grade aggregate to the second-grade aggregate to the third-grade aggregate is (3.8-4.2): (1.8-2.2): (3.8-4.2).
2. The inorganic compound according to claim 1, wherein the weight ratio of the first size fraction aggregate, the second size fraction aggregate and the third size fraction aggregate is 4: 2: 4.
3. the inorganic compound according to claim 1, wherein the weight of the waste tile fine aggregate is 25 to 100% of the total weight of the waste tile fine aggregate and the first size fraction aggregate.
4. The inorganic compound according to claim 1, wherein the waste ceramic tile fine aggregate satisfies the following conditions: the fineness modulus is 2.3-3.5, and the bulk density is 1300-1400 kg/m2The apparent density is 2400-2500 kg/m2The porosity is less than 48% and the crush value is less than 25%.
5. The inorganic compound according to claim 1, wherein the cement is a portland cement.
6. The inorganic mixture according to claim 1, wherein the ratio of the total mass of the construction waste recycled aggregate and the waste tile fine aggregate to the mass of the water is 100: (5-9).
7. The inorganic compound according to claim 1, wherein the inorganic compound has a density of 1.9 to 2.2g/cm3。
8. A method for preparing an inorganic compound according to any one of claims 1 to 7, comprising:
respectively carrying out pre-wetting treatment on 10-38 parts of the waste ceramic tile fine aggregate and 55-86 parts of the construction waste recycled aggregate to obtain pre-wetted waste ceramic tile fine aggregate and pre-wetted construction waste recycled aggregate;
uniformly mixing 4-7 parts of cement and 5-9 parts of water to obtain a gel;
uniformly mixing the pre-wetted waste ceramic tile fine aggregate, the pre-wetted construction waste recycled aggregate and the gel to obtain a mixture;
and sequentially filling the mixture into a mold, forming and maintaining to obtain the inorganic mixture.
9. The method for preparing the inorganic mixture according to claim 8, wherein the curing temperature is 18-22 ℃, and the curing humidity is not less than 95% RH.
10. Use of the inorganic mixture according to claims 1-7 for the preparation of urban road foundations, sub-bases and base layers.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185165A (en) * | 2021-05-10 | 2021-07-30 | 山东大学 | Design method for mixing proportion of cement stabilized regenerated macadam containing waste brick fine aggregate |
| CN115401789A (en) * | 2022-09-02 | 2022-11-29 | 中铁三局集团有限公司 | Concrete stirring production method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115401789A (en) * | 2022-09-02 | 2022-11-29 | 中铁三局集团有限公司 | Concrete stirring production method |
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