CN115477526A - Roadbed filling material prepared from waste shield slurry and preparation method thereof - Google Patents
Roadbed filling material prepared from waste shield slurry and preparation method thereof Download PDFInfo
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- CN115477526A CN115477526A CN202210900486.9A CN202210900486A CN115477526A CN 115477526 A CN115477526 A CN 115477526A CN 202210900486 A CN202210900486 A CN 202210900486A CN 115477526 A CN115477526 A CN 115477526A
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- filling material
- roadbed filling
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- 239000002002 slurry Substances 0.000 title claims abstract description 78
- 239000000463 material Substances 0.000 title claims abstract description 69
- 239000002699 waste material Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000007613 slurry method Methods 0.000 title description 2
- 238000003756 stirring Methods 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004568 cement Substances 0.000 claims abstract description 17
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 15
- 238000012216 screening Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 7
- 239000004575 stone Substances 0.000 abstract description 15
- 239000004576 sand Substances 0.000 abstract description 6
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000007873 sieving Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 4
- 231100000252 nontoxic Toxicity 0.000 description 4
- 230000003000 nontoxic effect Effects 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- 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
- C04B28/143—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 phosphogypsum
-
- 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
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A roadbed filling material prepared from waste shield slurry and a preparation method thereof relate to the technical field of roadbed filling materials, and the roadbed filling material comprises 40-60 parts by weight of waste shield slurry, 10-30 parts by weight of water and 20-30 parts by weight of a cementing material; the cementing material comprises 5 to 10 parts of phosphogypsum, 20 to 40 parts of fly ash, 20 to 40 parts of slag powder and 10 to 20 parts of cement, and the preparation method comprises the steps of S1, sieving the waste shield slurry and preparing the material; s2, preparing gelled slurry; and S3, stirring the gelled slurry and the waste shield slurry to obtain the roadbed filling material. According to the invention, the waste shield slurry is used for replacing sand inclusion stones and graded broken stones, the composition of the cementing material is improved according to the characteristics of the waste shield slurry, the unconfined compressive strength of the finally stirred roadbed filling material meets the requirements of national regulations on the roadbed filling material, the waste shield slurry can be consumed in a large scale, and the environmental benefit and the economic benefit are outstanding.
Description
Technical Field
The invention relates to the technical field of roadbed filling materials, in particular to a roadbed filling material prepared from waste shield slurry and a preparation method thereof.
Background
As a main construction method of tunnel engineering, a shield construction method is increasingly applied to construction in various engineering fields in China, and a slurry balance shield method is a mature one of the shield construction methods. The slurry balance shield method can generate a large amount of waste slurry (referred to as waste shield slurry for short), the components of the waste slurry mainly comprise clay and liquid, and the conventional method for treating the waste shield slurry mainly comprises natural sedimentation, outward transportation of a tank truck or disposal after filter pressing of a filter press, landfill and the like. However, the above methods all have the problems of poor treatment effect, long period and high cost, and if the treatment is improper, the methods also cause environmental pollution, destroy water quality and other environmental protection problems.
At present, a large amount of roadbed engineering construction adopts sand inclusion stones, graded broken stones and cement graded broken stone water stabilization layers, the using amount of the sand inclusion stones and the graded broken stones is huge and the requirement is high, and the continuous shortage of broken stone resources and the rapid rise of the price are caused by the fact that mine resources are less and the environment protection requirement is higher and higher when mine resources are used for mountain mining and ore mining to produce the graded broken stones and machine-made sand, so that the roadbed engineering cost is greatly improved, and meanwhile, the situation that the supply cannot be continuously guaranteed sometimes occurs. In order to save natural resources and reduce cost, finding a substitute material for roadbed construction on the premise of not influencing construction quality becomes a necessary choice.
Disclosure of Invention
Aiming at the problems that the treatment method of the waste shield slurry in the prior art has poor effect and long period, and the roadbed filling material resource is reduced and the cost is high, the invention provides the roadbed filling material prepared by adopting the waste shield slurry and the preparation method thereof.
The invention provides the following technical scheme: a roadbed filling material prepared from waste shield slurry comprises, by weight, 40-60 parts of waste shield slurry, 10-30 parts of water and 20-30 parts of a cementing material; the cementing material comprises 5 to 10 parts of phosphogypsum, 20 to 40 parts of fly ash, 20 to 40 parts of slag powder and 10 to 20 parts of cement.
Preferably, the particle size of the waste shield slurry is less than or equal to 3 cm.
A preparation method of a roadbed filling material prepared from waste shield slurry comprises the following steps:
s1, screening the waste shield slurry; preparing materials;
s2, adding the phosphogypsum, the fly ash, the slag powder, the cement and the water into a stirrer according to the proportion, and uniformly stirring to obtain gelled slurry;
and S3, adding the waste shield slurry in corresponding weight parts into a stirrer according to the proportion, and uniformly stirring the waste shield slurry and the gelled slurry together to obtain the plastic roadbed filling material.
Preferably, in S1, particles with a particle size greater than 3 cm in the waste shield mud are screened out.
Preferably, in S2, the stirring speed is 40 to 60 r/min, and the stirring time is 3 to 10 minutes.
Preferably, in S3, the stirring speed is 40 to 60 r/min, and the stirring time is 3 to 10 minutes.
The beneficial effects of the invention are: the waste shield slurry is used for replacing sand inclusion stones and graded broken stones, the composition of a cementing material is improved according to the characteristics of the waste shield slurry, the finally stirred roadbed filling material unconfined compressive strength meets the requirements of national specifications on the roadbed filling material, the waste shield slurry can be consumed on a large scale, and the environmental benefit and the economic benefit are outstanding.
Drawings
FIG. 1 is a schematic flow chart of the preparation method of the present invention.
Detailed Description
The embodiments of the present invention will be described in more detail with reference to the drawings and the reference numerals, so that those skilled in the art can implement the embodiments after reading the specification. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The invention provides a roadbed filling material prepared from waste shield slurry, which comprises the following components: 60 parts of waste shield slurry, 20 parts of water and 20 parts of cementing materials, wherein the cementing materials comprise 5 parts of phosphogypsum, 40 parts of fly ash, 40 parts of slag powder and 15 parts of cement. The components are calculated according to parts by weight.
The roadbed filling material is prepared according to the method shown in figure 1:
s1, treating waste shield slurry by a coarse screen and a vibrating screen in sequence, wherein the screening granularity of the vibrating screen is 5 cm; and preparing the waste shield slurry, the gelled material and the water which are subjected to screening treatment according to the proportion. The water can be one of tap water, reclaimed water and non-toxic river and lake water.
S2, adding the prepared phosphogypsum, the fly ash, the slag powder, the cement and the water into a stirrer, stirring for 5 min at the stirring revolution of 50 r/min to obtain the gelled slurry.
And S3, adding the waste shield slurry into a stirrer, wherein the stirring revolution is 55 r/min, the stirring time is 4 min, and after the stirring is finished, the waste shield slurry is changed from a fluid state to a plastic state, so that the plastic roadbed filling material is obtained.
Example 2
The invention provides a roadbed filling material prepared from waste shield slurry, which comprises the following components: the shield slurry comprises, by weight, 50 parts of waste shield slurry, 15 parts of water and 35 parts of a cementing material, wherein the cementing material comprises 10 parts of phosphogypsum, 40 parts of fly ash, 30 parts of slag powder and 20 parts of cement. The components are calculated according to parts by weight.
The roadbed filling material is prepared by the following method:
s1, treating waste shield slurry by a coarse screen and a vibrating screen in sequence, wherein the screening granularity of the vibrating screen is 4 cm; and preparing the waste shield slurry, the gelled material and the water which are subjected to screening treatment according to the proportion. The water can be one of tap water, reclaimed water and non-toxic river and lake water.
S2, adding the prepared phosphogypsum, the fly ash, the slag powder, the cement and the water into a stirrer, stirring for 4 min at the stirring revolution of 50 r/min to obtain the gelled slurry.
And S3, adding the waste shield slurry into a stirrer, wherein the stirring revolution is 55 r/min, the stirring time is 4 min, the waste shield slurry is changed from a fluid state to a plastic state, and the plastic roadbed filling material is obtained after the stirring is finished.
Example 3
The invention provides a roadbed filling material prepared from waste shield slurry, which comprises the following components: 40 parts of waste shield slurry, 30 parts of water and 30 parts of cementing materials, wherein the cementing materials comprise 10 parts of phosphogypsum, 30 parts of fly ash, 40 parts of slag powder and 20 parts of cement. The components are calculated according to parts by weight.
The roadbed filling material is prepared by the following method:
s1, treating waste shield slurry by a coarse screen and a vibrating screen in sequence, wherein the screening granularity of the vibrating screen is 3 cm; and preparing the waste shield slurry, the gelled material and the water which are subjected to screening treatment according to the proportion. The water can be one of tap water, reclaimed water and non-toxic river and lake water.
And S2, adding the prepared phosphogypsum, the fly ash, the slag powder, the cement and the water into a stirrer, stirring for 4 min at the stirring revolution of 50 r/min to obtain the gelled slurry.
And S3, adding the waste shield slurry into a stirrer, wherein the stirring revolution is 55 r/min, the stirring time is 4 min, the waste shield slurry is changed from a fluid state to a plastic state, and the plastic roadbed filling material is obtained after the stirring is finished.
Example 4
The invention provides a roadbed filling material prepared from waste shield slurry, which comprises the following components: 50 parts of waste shield slurry, 25 parts of water and 25 parts of cementing materials, wherein the cementing materials comprise 10 parts of phosphogypsum, 40 parts of fly ash, 40 parts of slag powder and 10 parts of cement. The components are calculated according to parts by weight.
The roadbed filling material is prepared by the following method:
s1, treating waste shield slurry by a coarse screen and a vibrating screen in sequence, wherein the screening granularity of the vibrating screen is 5 cm; and preparing the waste shield slurry, the cementing material and the water which are subjected to screening treatment according to the proportion. The water can be one of tap water, reclaimed water and non-toxic river and lake water.
And S2, adding the prepared phosphogypsum, the fly ash, the slag powder, the cement and the water into a stirrer, stirring for 4 min at the stirring revolution of 50 r/min to obtain the gelled slurry.
And S3, adding the waste shield slurry into a stirrer, wherein the stirring revolution is 55 r/min, the stirring time is 4 min, the waste shield slurry is changed from a fluid state to a plastic state, and the plastic roadbed filling material is obtained after the stirring is finished.
The roadbed filling materials prepared in the examples 1 to 4 are subjected to an unconfined compressive strength test according to highway geotechnical test regulations, and the obtained results are shown in the table I.
Table one: unconfined compressive strength test result table
The early hydration environment and hydration effect of cement and slag powder are improved through the excitation reaction of the phosphogypsum and the waste shield slurry, the generated hydrate and clay particles of the waste shield slurry generate physical and chemical reaction to generate a cement stone framework, the early solidification strength of the roadbed filling material can be greatly improved, the microstructure environment of the waste shield slurry is improved through the filling of the fly ash, the later strength of the roadbed filling material is improved, and therefore the strength requirement of the roadbed filling material is met. As can be seen from the Table I, the compressive strengths of examples 1 to 4 all satisfy the regulations of the rules of construction technology for road pavements on unlimited compressive strength of cement stabilizing materials for underlayers at the age of 7 d. The waste shield slurry is used for replacing sand inclusion stones and graded broken stones to prepare the roadbed filling material, so that natural resources can be effectively saved, and the cost is reduced to 40-50% of the graded broken stones.
The foregoing is a detailed description of one or more embodiments of the invention, which is set forth in more detail and is not intended to limit the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the spirit of the invention, which falls within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (6)
1. The utility model provides an adopt road bed filling material of abandonment shield constructs mud material preparation which characterized in that: the roadbed filling material comprises, by weight, 40 to 60 parts of waste shield slurry, 10 to 30 parts of water and 20 to 30 parts of a cementing material; the cementing material comprises 5 to 10 parts of phosphogypsum, 20 to 40 parts of fly ash, 20 to 40 parts of slag powder and 10 to 20 parts of cement.
2. The roadbed filling material prepared from the waste shield slurry according to claim 1, wherein the roadbed filling material is characterized in that: the particle size of the waste shield slurry is less than or equal to 3 cm.
3. A preparation method of a roadbed filling material prepared from waste shield slurry is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
s1, screening the waste shield slurry; preparing materials;
s2, adding phosphogypsum, fly ash, slag powder, cement and water into a stirrer according to a ratio, and uniformly stirring to obtain gelled slurry;
and S3, adding the waste shield slurry in a corresponding weight part into a stirrer according to a ratio, and uniformly stirring the waste shield slurry and the gelled slurry together to obtain the plastic roadbed filling material.
4. The method for preparing the roadbed filling material by using the waste shield slurry as claimed in claim 3, wherein the method comprises the following steps: in S1, screening out particles with the particle size larger than 3 cm in the waste shield slurry.
5. The method for preparing the roadbed filling material by using the waste shield slurry as claimed in claim 3, wherein the method comprises the following steps: in S2, the stirring speed is 40 to 60 r/min, and the stirring time is 3 to 10 minutes.
6. The method for preparing the roadbed filling material by using the waste shield slurry as claimed in claim 3, wherein the method comprises the following steps: in S3, the stirring speed is 40 to 60 r/min, and the stirring time is 3 to 10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210900486.9A CN115477526A (en) | 2022-07-28 | 2022-07-28 | Roadbed filling material prepared from waste shield slurry and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210900486.9A CN115477526A (en) | 2022-07-28 | 2022-07-28 | Roadbed filling material prepared from waste shield slurry and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115477526A true CN115477526A (en) | 2022-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210900486.9A Pending CN115477526A (en) | 2022-07-28 | 2022-07-28 | Roadbed filling material prepared from waste shield slurry and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004155636A (en) * | 2002-11-08 | 2004-06-03 | Kyoko Kensetsu Kk | Construction or building material using slag or fly ash as main material |
| CN108409227A (en) * | 2018-02-02 | 2018-08-17 | 中交第二航务工程局有限公司 | Slurry, which is abandoned, using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method |
| CN113402216A (en) * | 2021-08-10 | 2021-09-17 | 中国市政工程华北设计研究总院有限公司 | Shield muck curing agent and resource utilization method thereof |
| WO2021189886A1 (en) * | 2020-03-24 | 2021-09-30 | 中国建筑第五工程局有限公司 | Unfired construction material using original state shielding soil and preparation method therefor |
| CN113860840A (en) * | 2021-11-02 | 2021-12-31 | 青岛理工大学 | Roadbed material prepared from waste slurry and application thereof |
-
2022
- 2022-07-28 CN CN202210900486.9A patent/CN115477526A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004155636A (en) * | 2002-11-08 | 2004-06-03 | Kyoko Kensetsu Kk | Construction or building material using slag or fly ash as main material |
| CN108409227A (en) * | 2018-02-02 | 2018-08-17 | 中交第二航务工程局有限公司 | Slurry, which is abandoned, using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method |
| WO2021189886A1 (en) * | 2020-03-24 | 2021-09-30 | 中国建筑第五工程局有限公司 | Unfired construction material using original state shielding soil and preparation method therefor |
| CN113402216A (en) * | 2021-08-10 | 2021-09-17 | 中国市政工程华北设计研究总院有限公司 | Shield muck curing agent and resource utilization method thereof |
| CN113860840A (en) * | 2021-11-02 | 2021-12-31 | 青岛理工大学 | Roadbed material prepared from waste slurry and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 姚建;王新民;田冬梅;张钦礼;: "磷石膏和粉煤灰胶结充填料的性能试验研究" * |
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Application publication date: 20221216 |
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