CN110642587A - Novel backfill material and manufacturing method thereof - Google Patents
Novel backfill material and manufacturing method thereof Download PDFInfo
- Publication number
- CN110642587A CN110642587A CN201910978210.0A CN201910978210A CN110642587A CN 110642587 A CN110642587 A CN 110642587A CN 201910978210 A CN201910978210 A CN 201910978210A CN 110642587 A CN110642587 A CN 110642587A
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- CN
- China
- Prior art keywords
- sludge
- curing agent
- foundation
- foundation pit
- novel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
Abstract
The invention discloses a novel backfill material and a manufacturing method thereof, wherein the backfill material consists of silt and a curing agent; the sludge consists of soil and water generated during foundation or foundation pit excavation; in the construction process of the foundation or the foundation pit, the soil generated during excavation of the foundation or the foundation pit usually needs to be transported and filled, and both the transportation and the filling greatly increase the construction cost; and the exploitation of sand and broken stones is reduced, which is beneficial to environmental protection.
Description
Technical Field
The invention relates to the technical field of backfill materials, in particular to a novel backfill material and a manufacturing method thereof.
Background
During the back filling of the traditional retaining wall and abutment and the foundation pit refilling of the underground structure, the backfill is mostly formed by mixing sand and gravels according to a certain proportion, the exploitation of the sand and the gravels seriously affects the natural ecology and is not beneficial to environmental protection, the price of purchasing the sand and the gravels is high, and the production cost of the backfill is greatly increased.
In view of the above, the present inventors have made extensive studies and intensive studies to develop and design the present invention in view of the disadvantages and inconveniences found in the production of the backfill material.
Disclosure of Invention
The invention aims to provide a novel backfill material with environmental protection and low production cost and a preparation method thereof.
In order to achieve the above purpose, the solution of the invention is:
the novel backfill consists of silt and a curing agent; the sludge is composed of soil and water generated during foundation or foundation pit excavation.
Preferably, the curing agent comprises cement, sodium silicate, sodium chloride and sodium sulfate; and the weight of the cement is 3% -10% of that of the sludge, and the weight of the sodium silicate, the sodium chloride and the sodium sulfate is 2% -10% of that of the cement.
Preferably, the curing agent further comprises fly ash, and the weight of the fly ash is 2% -10% of that of the sludge.
Preferably, the solid content of the sludge is 5-40%.
A method for manufacturing a novel backfill material comprises the following steps:
firstly, digging soil generated during foundation or foundation pit excavation into a sludge stirrer, and stirring and mixing the soil with water to obtain sludge;
removing lumps doped in the sludge through a vibration grid on the sludge stirrer;
step three, conveying the curing agent into a sludge stirrer through pumping equipment, and stirring and mixing the curing agent with sludge to obtain composite sludge slurry;
step four, conveying the composite sludge slurry to the table back or the foundation pit through a plunger pump in the sludge stirrer;
and step five, curing the composite sludge slurry and then hardening and forming the backfill material.
Preferably, in the second step, the solid content of the sludge after the removal of the lumps is 5% -40%.
After the scheme is adopted, in the construction process of the foundation or the foundation pit, the soil generated during excavation of the foundation or the foundation pit usually needs to be transported and filled, and both the transporting and filling greatly increase the construction cost; and the exploitation of sand and broken stones is reduced, which is beneficial to environmental protection.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
The invention relates to a preferred embodiment of a novel backfill material, which consists of silt and a curing agent; the sludge is composed of soil and water generated during foundation or foundation pit excavation.
In the construction process of the foundation or the foundation pit, the soil generated during excavation of the foundation or the foundation pit usually needs to be transported and filled, and both the transportation and the filling greatly increase the construction cost; and the exploitation of sand and broken stones is reduced, which is beneficial to environmental protection.
Preferably, the curing agent comprises cement, sodium silicate, sodium chloride and sodium sulfate; and the weight of the cement is 3% -10% of that of the sludge, and the weight of the sodium silicate, the sodium chloride and the sodium sulfate is 2% -10% of that of the cement. The curing agent is an alkali-activated cementing material, and after being mixed with sludge containing certain moisture, a series of physical and chemical reactions occur, high-valence ions in the solution can change the surface charge characteristics of sludge particles, reduce the repulsive force among the sludge particles, destroy the water absorption film of the sludge particles, improve the adsorption force among the sludge particles, ensure that the moisture content in the sludge reaches stable balance, simultaneously form crystal salt, form a large number of needle-shaped crystals rich in crystal water in the sludge, and form a strength framework among the gaps of the sludge particles; secondly, hydrate is filled in the strength framework, so that the curing system is further compact; the curing agent and part of the sludge particles take part in chemical reaction, so that the reinforced field has extremely strong durability, waterproofness and stability.
Preferably, the curing agent further comprises fly ash, and the weight of the fly ash is 2% -10% of that of the sludge. By adding the fly ash, the curing effect of the curing agent is not influenced, the using amount of cement can be reduced, and the production cost of the curing agent is reduced.
Preferably, the solid content of the sludge is 5 to 40 percent. In the embodiment, water is added into the sludge to control the solid content of the sludge to be 5-40%.
The preparation method of the backfill material comprises the following steps:
firstly, digging soil generated during foundation or foundation pit excavation into a sludge stirrer, and stirring and mixing the soil with water to obtain sludge;
removing lumps with large particle sizes such as stones doped in the sludge through a vibration grid on the sludge stirrer;
step three, conveying the curing agent into a sludge stirrer through pumping equipment, and stirring and mixing the curing agent with sludge to obtain composite sludge slurry;
step four, conveying the composite sludge slurry to the table back or the foundation pit through a plunger pump in the sludge stirrer;
and step five, curing the composite sludge slurry, and then hardening and forming the backfill material with strength.
Preferably, in the second step, the solid content of the sludge after removing the lumps is 5-40%. In the embodiment, water is added into the sludge after the removal of the lumps, so that the solid content of the sludge after the removal of the lumps is controlled to be 5-40%.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description and is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as may be appropriate to those skilled in the art without departing from the scope of the invention.
Claims (6)
1. A novel backfill is characterized in that: the sludge curing agent consists of sludge and a curing agent; the sludge is composed of soil and water generated during foundation or foundation pit excavation.
2. A novel backfill, according to claim 1, characterized by: the curing agent comprises cement, sodium silicate, sodium chloride and sodium sulfate; and the weight of the cement is 3% -10% of that of the sludge, and the weight of the sodium silicate, the sodium chloride and the sodium sulfate is 2% -10% of that of the cement.
3. A novel backfill, according to claim 2, characterized by: the curing agent also comprises fly ash, and the weight of the fly ash is 2-10% of that of the sludge.
4. A novel backfill, according to claim 1, characterized by: the solid content of the sludge is 5-40%.
5. A method for making a novel backfill according to claims 1-4, characterized by: which comprises the following steps:
firstly, digging soil generated during foundation or foundation pit excavation into a sludge stirrer, and stirring and mixing the soil with water to obtain sludge;
removing lumps doped in the sludge through a vibration grid on the sludge stirrer;
step three, conveying the curing agent into a sludge stirrer through pumping equipment, and stirring and mixing the curing agent with sludge to obtain composite sludge slurry;
step four, conveying the composite sludge slurry to the table back or the foundation pit through a plunger pump in the sludge stirrer;
and step five, curing the composite sludge slurry and then hardening and forming the backfill material.
6. The method for manufacturing the novel backfill according to claim 5, characterized in that: in the second step, the solid content of the sludge after the removal of the lumps is 5-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978210.0A CN110642587A (en) | 2019-10-15 | 2019-10-15 | Novel backfill material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978210.0A CN110642587A (en) | 2019-10-15 | 2019-10-15 | Novel backfill material and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110642587A true CN110642587A (en) | 2020-01-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910978210.0A Pending CN110642587A (en) | 2019-10-15 | 2019-10-15 | Novel backfill material and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110642587A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116023109A (en) * | 2022-12-26 | 2023-04-28 | 上海申继交通科技有限公司 | Industrial production method and production equipment for fluidized soil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008308396A (en) * | 2007-06-15 | 2008-12-25 | Natoo Kenkyusho:Kk | Water-containing composition, utilization and treatment method, and non-polluting water-resistant treated object |
| CN105924124A (en) * | 2016-05-09 | 2016-09-07 | 佳木斯大学 | Soil stabilizer for reinforcing roadbed base |
-
2019
- 2019-10-15 CN CN201910978210.0A patent/CN110642587A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008308396A (en) * | 2007-06-15 | 2008-12-25 | Natoo Kenkyusho:Kk | Water-containing composition, utilization and treatment method, and non-polluting water-resistant treated object |
| CN105924124A (en) * | 2016-05-09 | 2016-09-07 | 佳木斯大学 | Soil stabilizer for reinforcing roadbed base |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116023109A (en) * | 2022-12-26 | 2023-04-28 | 上海申继交通科技有限公司 | Industrial production method and production equipment for fluidized soil |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20200103 |