CN115340325A - Curing agent for premixed fluid curing soil and preparation and use methods thereof - Google Patents
Curing agent for premixed fluid curing soil and preparation and use methods thereof Download PDFInfo
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- CN115340325A CN115340325A CN202211026924.XA CN202211026924A CN115340325A CN 115340325 A CN115340325 A CN 115340325A CN 202211026924 A CN202211026924 A CN 202211026924A CN 115340325 A CN115340325 A CN 115340325A
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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
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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
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
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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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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
Abstract
The application provides a curing agent for premixed fluid solidified soil and a preparation method and a using method thereof, relating to the technical field of civil construction materials. A curing agent for premixed fluid curing soil comprises the following raw materials: cement, quicklime, slag, fly ash, steel fiber, a water reducing agent and a penetrating agent. The preparation method of the curing agent comprises the following steps: crushing quicklime, slag and fly ash to the granularity of 0.5-2mm; mixing with other raw materials, and uniformly mixing to obtain the curing agent. The application method of the curing agent comprises the following steps: adding a curing agent into the muck, uniformly stirring, then adding water and a composite activator, mixing to obtain slurry, and filling and backfilling the foundation pit and the fertilizer tank with the slurry. The curing agent obtained by the method has the advantages of good curing effect, low shrinkage rate, high strength and the like, and the preparation method and the use method are simple and convenient and have wide application scenes.
Description
Technical Field
The application relates to the technical field of civil construction materials, in particular to a curing agent for ready-mixed fluid-state curing soil and a preparation method and a use method thereof.
Background
At present, in the construction process of various projects in China, the treatment requirements in the aspects of improving soil bodies and reinforcing the soil bodies, such as foundation treatment or roadbed reinforcement, are often met, and the construction operation in the aspects of pouring and backfilling specific parts such as mine goafs and grooves is also often met. Aiming at the construction requirements, the design scheme and the construction method adopted by the practitioner at present have certain limitations. For example, a deep stirring method is mostly adopted for foundation treatment, and after curing agents such as cement are added into in-situ soil, forced stirring is carried out to enable the soil to be combined with the soil so as to improve the strength, but the in-situ stirring method is poor in strength and effect due to the fact that the in-situ stirring method is lack of flowing and operating space and stirring is not uniform due to mechanical equipment and other reasons.
The soil (rock soil) solidification refers to that loose and broken soil is solidified into integral solid matter with certain strength through some measures, the solidified soil can be called solidified soil, and the main purpose of the soil solidification is to obtain higher strength, better integrity and impermeability than natural soil. The solidified soil is different from natural soil in the aspects of integrity and friability.
In a broad sense, the solidified soil can also be regarded as a concrete with low strength and low elastic modulus. Concrete in general terms is to be understood as: setting coarse-grained soil (stone, sand) by taking cement-based cementing materials as (chemical substances containing dispersed cementing materials); the solidified soil can be understood as: solidifying fine soil (silt, clay, mucky soil, etc.) with special cementing material combination (containing chemical substances for improving soil particle interface and reactivity). Cements, particularly portland cements, are used to consolidate coarse-grained soils (stones, sands) whose surface properties are inert, their effectiveness being undoubted. However, when ordinary portland cement is used for fine soil having surface activity, the effect is general or even no effect, and particularly, the portland cement is not suitable for curing special soil such as saline soil under a high water content state.
Therefore, it is necessary to develop a special cement system (curing agent) for curing the ready-mixed fluid-state curing soil so that the function of the system can meet the use requirement, thereby achieving technical and economic feasibility.
Disclosure of Invention
The application aims to provide a curing agent for premixed fluid curing soil, and the curing agent has the advantages of good curing effect, low shrinkage rate, high strength and the like.
Another object of the present invention is to provide a method for preparing a curing agent for ready-mixed fluid state curing soil, which is simple.
Still another object of the present application is to provide a method for using a curing agent for ready-mixed fluid curing soil, which is convenient.
The technical problem to be solved by the application is achieved by adopting the following technical scheme.
In one aspect, an embodiment of the present application provides a curing agent for ready-mixed fluid solidified soil, including the following raw materials: cement, quicklime, slag, fly ash, steel fiber, a water reducing agent and a penetrating agent.
On the other hand, the embodiment of the application provides a preparation method of a curing agent for premixed fluid curing soil, which comprises the following steps: crushing quicklime, slag and fly ash to the granularity of 0.5-2mm; mixing with other raw materials, and uniformly mixing to obtain the curing agent.
In another aspect, an embodiment of the present application further provides a method for using a curing agent for ready-mixed fluid curing soil, including the following steps: adding a curing agent into the muck, stirring uniformly, then adding water and a composite activator, mixing to obtain slurry, and filling the slurry into the foundation pit and the fertilizer tank for backfilling.
Compared with the prior art, the embodiment of the application has at least the following advantages or beneficial effects:
aiming at the first aspect, in the application, cement is used as a main raw material of a curing agent, so that the advantages of good solidification effect and high unconfined compressive strength are provided, but the cement can shrink when being solidified, so that cracks are easily generated; simultaneously adding the fly ash, the slag and the steel fiber to improve the strength of the solidified soil after solidification; the slag belongs to mineral waste residues, has the advantage of resource recycling, contains higher dicalcium silicate, is slow in hydration reaction, prolongs the initial setting time, improves the fluidity and slump of the premixed flow-state solidified soil in the early stage, and improves the strength in the later stage; the steel fiber contains silicon dioxide, has better stability, reduces the thermal expansion coefficient, and plays a role in reducing the drying shrinkage effect together with the quicklime. In addition, the calcium content in the quick lime is high, the content of calcium hydroxide in the whole curing agent is improved, a good synergistic effect is achieved on the fly ash, and the fly ash is prevented from being combined with a cement water product to influence the final stability of the cement. The penetrating agent and the water reducing agent are added into the formula, so that the charge condition of the surface of the muck is improved, the fluidity and the penetrating action of the premixed fluid state solidified soil are improved, and the premixed fluid state solidified soil is more tightly combined with surrounding soil or rock and soil.
Aiming at the second aspect, the preparation method is simple, the raw materials are crushed, the specific surface area is larger when the raw materials are combined with the slag soil, and the curing effect is improved.
In the third aspect, the curing agent is a hydraulic gel material, so that when the curing agent is used, the muck is mixed with the curing agent, and then water and the activator are added to achieve a better curing effect.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to specific examples.
A curing agent for premixed fluid curing soil comprises the following raw materials: cement, quicklime, slag, fly ash, steel fiber, a water reducing agent and a penetrating agent.
In the application, the cement is used as the main raw material of the curing agent, so that the advantages of good solidification effect and high unconfined compressive strength are provided, but the cement can shrink when being solidified, so that cracks are easy to generate; meanwhile, fly ash, slag and steel fiber are added, so that the strength of the whole solidified soil is improved after solidification; the slag belongs to mineral waste residues, has the advantage of resource recycling, contains higher dicalcium silicate, is slow in hydration reaction, prolongs the initial setting time, improves the fluidity and slump of the premixed fluid-state solidified soil in the early stage, and improves the strength in the later stage; the steel fiber contains silicon dioxide, has better stability, reduces the thermal expansion coefficient, and plays a role of reducing the drying shrinkage effect together with the quick lime. In addition, the calcium content in the quick lime is high, the content of calcium hydroxide in the whole curing agent is improved, a good synergistic effect is achieved on the fly ash, and the fly ash is prevented from being combined with a cement water product to influence the final stability of the cement. The penetrating agent and the water reducing agent are added into the formula, so that the charge condition of the surface of the muck is improved, the fluidity and the penetrating action of the premixed fluid state solidified soil are improved, and the premixed fluid state solidified soil is more tightly combined with surrounding soil or rock and soil.
In some embodiments of the present application, the curing agent comprises the following raw materials in parts by weight: 20-40 parts of cement, 10-20 parts of quick lime, 15-30 parts of slag, 10-20 parts of fly ash, 10-18 parts of steel fiber, 3-8 parts of water reducing agent and 3-8 parts of penetrating agent. By combining the raw materials in the proportion, the curing agent with better and more stable effects in all aspects can be obtained.
In some embodiments of the present application, the curing agent comprises the following raw materials in parts by weight: 30 parts of cement, 15 parts of quicklime, 25 parts of slag, 15 parts of fly ash, 12 parts of steel fiber, 5 parts of water reducing agent and 5 parts of penetrating agent.
In some embodiments of the present application, the water reducing agent is an anionic surfactant, in particular a lignosulfonate or naphthalene sulfonate formaldehyde polymer. The anionic surfactant can change the charge condition of the surface of the muck, so that the curing agent and the muck are better mixed, the use of water is reduced, the hydration action of the cured soil can be reduced, the stability of the premixed flow state cured soil is improved, and the final setting time of the premixed flow state cured soil is shortened.
In some embodiments of the present application, the osmotic agent is polyethylene oxide. The polyoxyethylene has extensibility, and in the mixing and initial setting stage of the curing agent raw materials, the quick lime absorbs water and releases water, and when the temperature is higher than the melting point of the polyoxyethylene, the polyoxyethylene becomes a thermoplastic substance, so that the permeation of the premixed fluid-state solidified soil to the gaps of the building underground is promoted, the fluidity of the premixed fluid-state solidified soil is improved, and the premixed fluid-state solidified soil has better strength when being solidified in the later period, and the later-period reinforcing effect is achieved.
A preparation method of a curing agent for premixed fluid curing soil comprises the following steps: crushing quicklime, slag and fly ash to the granularity of 0.5-2mm; mixing with other raw materials, and uniformly mixing to obtain the curing agent.
The preparation method is simple, the raw materials are crushed, and the solidified agent has a larger specific surface area when being combined with the muck, so that the combination effect of the solidified agent and the muck is better, and the solidification effect is improved.
The use method of the curing agent for the premixed fluid curing soil comprises the following steps: adding a curing agent into the muck, uniformly stirring, then adding water and a composite activator, mixing to obtain slurry, and filling and backfilling the foundation pit and the fertilizer tank with the slurry.
The curing agent is a hydraulic gel material, so that when the curing agent is used, muck and the curing agent are mixed, and then water and an activator are added to achieve a better curing effect.
In some embodiments of the present application, the ratio of sand to clay in the residue soil is (0.1-1): (0.1-1), the water content of the residue soil is 5-15%. The curing agent is more suitable for the muck with the properties, if the content of sandy soil is higher, the dosage of the curing agent needs to be additionally increased, the bonding property is improved, and if the water content in the muck is reduced, the addition of water needs to be improved when the muck is used, so that the curing process of the curing agent is promoted.
In some embodiments of the present application, the ratio of the muck, the curing agent, the water and the composite activator is 10: (0.8-1.5): (1.5-4): (0.05-0.1). The muck and the curing agent can be better combined by adopting the proportion; because the water reducing agent is added into the raw materials, the utilization of water can be reduced, so that the defect of hydration is reduced, and the final setting effect is reduced.
In some embodiments of the present application, the compound activator is composed of the following raw materials by mass: 55-65% of aluminum sulfate slag, 15-25% of sodium sulfate and 10-25% of calcium lignosulphonate. The composite excitant can promote the solidification of the fly ash and the slag and provide the strength in the later solidification period.
The features and properties of the present application are described in further detail below with reference to examples.
Example 1
A curing agent for premixed fluidized curing soil is prepared by the following steps:
weighing the following raw materials in parts by weight: 300g of cement, 150g of quicklime, 250g of slag, 150g of fly ash, 120g of steel fiber, 50g of water reducing agent (lignosulfonate) and 50g of penetrating agent (polyethylene oxide);
the quicklime, the slag and the fly ash are crushed to 1mm, and are sieved and then uniformly mixed with other raw materials to obtain the curing agent of the embodiment.
The using method comprises the following steps: mixing 1000g of solidified soil (sand soil and clay with the mass ratio of 4 to 3 and the water content of 8.5%) and 150g of the prepared curing agent for 20min, adding 20g of water and 1g of compound activator, and stirring for 10min to obtain premixed fluid solidified soil; and (4) filling and backfilling the foundation pit and the fertilizer groove with premixed fluidized solidified soil. The composite exciting agent comprises 60% of aluminum sulfate slag, 20% of sodium sulfate and 20% of calcium lignosulphonate.
Example 2
A curing agent for premixed fluid solidified soil is prepared by the following steps:
weighing the following raw materials in parts by weight: 250g of cement, 120g of quicklime, 300g of slag, 100g of fly ash, 180g of steel fiber, 30g of water reducing agent (lignosulfonate) and 60g of penetrating agent (polyethylene oxide);
the quicklime, the slag and the fly ash are crushed to 1mm, and are sieved and then uniformly mixed with other raw materials to obtain the curing agent of the embodiment.
The using method comprises the following steps: mixing 1000g of solidified soil (sand and clay with a mass ratio of 4 to 1 and a water content of 12%) and 100g of the prepared curing agent for 25min, adding 40g of water and 0.8g of composite activator, and stirring for 10min to obtain premixed fluid solidified soil; and (4) filling and backfilling the foundation pit and the fertilizer tank with the premixed fluid-state solidified soil. The composite exciting agent comprises 65% of aluminum sulfate slag, 25% of sodium sulfate and 10% of wood calcium by mass.
Example 3
A curing agent for premixed fluid solidified soil is prepared by the following steps:
weighing the following raw materials in parts by weight: 400g of cement, 100g of quicklime, 280g of slag, 200g of fly ash, 120g of steel fiber, 80g of water reducing agent (naphthalene sulfonate formaldehyde polymer) and 30g of penetrating agent (polyethylene oxide);
the quicklime, the slag and the fly ash are crushed to 2mm, and are sieved and then uniformly mixed with other raw materials to obtain the curing agent of the embodiment.
The using method comprises the following steps: mixing 1000g of solidified soil (sand and clay with a mass ratio of 4 to 1 and a water content of 12%) and 80g of the prepared solidifying agent for 15min, adding 15g of water and 0.5g of composite activator, and stirring for 10min to obtain premixed fluid solidified soil; and (4) filling and backfilling the foundation pit and the fertilizer groove with premixed fluidized solidified soil. The composite exciting agent comprises 65% of aluminum sulfate slag, 25% of sodium sulfate and 10% of wood calcium by mass.
Example 4
A curing agent for premixed fluidized curing soil is prepared by the following steps:
weighing the following raw materials in parts by weight: 380g of cement, 150g of quicklime, 160g of slag, 180g of fly ash, 130g of steel fiber, 60g of water reducing agent (naphthalene sulfonate formaldehyde polymer) and 40g of penetrating agent (polyethylene oxide);
the quicklime, the slag and the fly ash are crushed to 0.5mm, and are sieved and then uniformly mixed with other raw materials to obtain the curing agent of the embodiment.
The using method comprises the following steps: mixing 1000g of solidified soil (sand and clay with the mass ratio of 1 to 8 and the water content of 15%) and 120g of the prepared curing agent for 20min, adding 30g of water and 0.9g of composite activator, and stirring for 20min to obtain premixed fluid solidified soil; and (4) filling and backfilling the foundation pit and the fertilizer tank with the premixed fluid-state solidified soil. The composite exciting agent of the embodiment comprises 60% of aluminum sulfate slag, 15% of sodium sulfate and 25% of wood calcium by mass.
Example 5
A curing agent for premixed fluid solidified soil is prepared by the following steps:
weighing the following raw materials in parts by weight: 200g of cement, 180g of quicklime, 180g of slag, 100g of fly ash, 180g of steel fiber, 80g of water reducing agent (naphthalene sulfonate formaldehyde polymer) and 50g of penetrating agent (polyethylene oxide);
and crushing the quicklime, the slag and the fly ash to 0.5mm, sieving, and uniformly mixing with other raw materials to obtain the curing agent of the embodiment.
The using method comprises the following steps: mixing 1000g of solidified soil (sand soil and clay with the mass ratio of 1 to 5 and the water content of 14%) and 150g of the prepared curing agent for 20min, adding 15g of water and 1g of composite activator, and stirring for 20min to obtain premixed fluid solidified soil; and (4) filling and backfilling the foundation pit and the fertilizer groove with premixed fluidized solidified soil. The composite exciting agent of the embodiment comprises 55% of aluminum sulfate slag, 20% of sodium sulfate and 25% of wood calcium by mass.
Example 6
A curing agent for premixed fluid solidified soil is prepared by the following steps:
weighing the following raw materials in parts by weight: 390g of cement, 120g of quicklime, 280g of slag, 180g of fly ash, 100g of steel fiber, 30g of water reducing agent (naphthalene sulfonate formaldehyde polymer) and 40g of penetrating agent (polyethylene oxide);
the quicklime, the slag and the fly ash are crushed to 0.8mm, and are sieved and then uniformly mixed with other raw materials to obtain the curing agent of the embodiment.
The using method comprises the following steps: mixing 1000g of solidified soil (the mass ratio of sandy soil to clay is 1, and the water content is 10%) and 150g of the prepared solidifying agent for 20min, adding 40g of water and 1g of composite exciting agent, and stirring for 20min to obtain premixed fluid solidified soil; and (4) filling and backfilling the foundation pit and the fertilizer groove with premixed fluidized solidified soil. The composite exciting agent of the embodiment comprises 55% of aluminum sulfate slag, 25% of sodium sulfate and 20% of wood calcium by mass.
Example 7
A curing agent for premixed fluid solidified soil is prepared by the following steps:
weighing the following raw materials in parts by weight: 420g of cement, 130g of quicklime, 280g of slag, 180g of fly ash, 100g of steel fiber, 30g of water reducing agent (naphthalene sulfonate formaldehyde polymer) and 40g of penetrating agent (polyethylene oxide);
the quicklime, the slag and the fly ash are crushed to 0.8mm, and are sieved and then uniformly mixed with other raw materials to obtain the curing agent of the embodiment.
The using method comprises the following steps: mixing 1000g of solidified soil (sand and clay with a mass ratio of 5 to 1 and a water content of 5%) and 150g of the prepared curing agent for 20min, adding 40g of water and 1g of composite activator, and stirring for 20min to obtain premixed fluid solidified soil; and (4) filling and backfilling the foundation pit and the fertilizer groove with premixed fluidized solidified soil. The composite exciting agent of the embodiment comprises 55% of aluminum sulfate slag, 25% of sodium sulfate and 20% of wood calcium by mass.
Comparative example 1
The starting materials, preparation method and application method of this comparative example are essentially the same as in example 1, except that: in this comparative example, no gypsum was added.
Comparative example 2
The starting materials, preparation method and application method of this comparative example are essentially the same as in example 1, except that: no steel fibers were added in this comparative example.
Examples of the experiments
The curing agents prepared in examples 1 to 6 and comparative examples 1 to 2 of the present application were used to cure the clay in the same manner as in example 1, and slump, shrinkage, initial setting time, final setting time, and unconfined compressive strength at different times were measured, and the results are shown in tables 1 and 2.
TABLE 1
TABLE 2
As can be seen from tables 1 and 2, the curing agents prepared in the embodiments 1 to 6 have good and stable curing effect on the ready-mixed fluid state curing soil, meet the standards that 18d unconfined compressive strength is more than or equal to 0.8MPa, initial setting time is more than or equal to 3h, and final setting time is less than or equal to 10h, have low dry shrinkage rate, and meet the construction standard of the curing soil. Compared with examples 1-6, the curing agent prepared in comparative examples 1-2 has poor effect on the dry shrinkage and unconfined compressive strength, which shows that the lack of quicklime greatly affects the dry shrinkage rate of the final cured soil, thereby affecting the strength; the lack of steel fibers may further affect the unconfined compressive strength of the solidified soil. This also demonstrates the better and more comprehensive stability of the curing agent using the formulation of the present application.
In summary, the curing agent for ready-mixed fluid-state curing soil and the preparation and use methods thereof are provided in the embodiments of the present application.
Aiming at the first aspect, in the application, cement is used as a main raw material of a curing agent, so that the advantages of good solidification effect and high unconfined compressive strength are provided, but the cement can shrink when being solidified, so that cracks are easily generated; meanwhile, fly ash, slag and steel fiber are added, so that the strength of the whole solidified soil is improved after solidification; the slag belongs to mineral waste residues, has the advantage of resource recycling, contains higher dicalcium silicate, is slow in hydration reaction, prolongs the initial setting time, improves the fluidity and slump of the premixed fluid-state solidified soil in the early stage, and improves the strength in the later stage; the steel fiber contains silicon dioxide, has better stability, reduces the thermal expansion coefficient, and plays a role in reducing the drying shrinkage effect together with the quicklime. In addition, the calcium content in the quick lime is high, the content of calcium hydroxide in the whole curing agent is improved, a good synergistic effect is achieved on the fly ash, and the fly ash is prevented from being combined with a cement water product to influence the final stability of the cement. The penetrating agent and the water reducing agent are added into the formula, so that the charge condition of the surface of the muck is improved, the fluidity and the penetrating action of the premixed fluid state solidified soil are improved, and the premixed fluid state solidified soil is more tightly combined with surrounding soil or rock and soil.
Aiming at the second aspect, the preparation method is simple, the raw materials are crushed, the specific surface area is larger when the dregs are combined, the mixing effect of the dregs and the curing agent is increased, and the curing effect is improved.
Aiming at the third aspect, the curing agent is a hydraulic gel material, so that when the curing agent is used, muck is mixed with the curing agent, and then water and an activator are added, so that a better curing effect is achieved, and the curing agent is convenient to use.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (10)
1. The curing agent for the premixed fluid curing soil is characterized by comprising the following raw materials: cement, quicklime, slag, fly ash, steel fiber, a water reducing agent and a penetrating agent.
2. The curing agent for the ready-mixed fluid solidified soil as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: 20-40 parts of cement, 10-20 parts of quicklime, 15-30 parts of slag, 10-20 parts of fly ash, 10-18 parts of steel fiber, 3-8 parts of a water reducing agent and 3-8 parts of a penetrating agent.
3. The curing agent for the ready-mixed fluid solidified soil according to claim 2, which is characterized by comprising the following raw materials in parts by weight: 30 parts of cement, 15 parts of quicklime, 25 parts of slag, 15 parts of fly ash, 12 parts of steel fiber, 5 parts of water reducing agent and 5 parts of penetrating agent.
4. The curing agent for ready-mixed fluid solidified soil according to any one of claims 1 to 3, wherein the water reducing agent is an anionic surfactant, in particular lignosulfonate or naphthalene sulfonate formaldehyde polymer.
5. The curing agent for ready-mixed fluid solidified soil according to any one of claims 1 to 3, wherein the penetrating agent is polyethylene oxide.
6. A method for preparing the curing agent for ready-mixed fluid solidified soil according to any one of claims 1 to 5, comprising the steps of: crushing quicklime, slag and fly ash to the granularity of 0.5-2mm; mixing with other raw materials, and uniformly mixing to obtain the curing agent.
7. The use method of the curing agent for ready-mixed fluid solidified soil according to any one of claims 1 to 5, characterized by comprising the steps of: adding a curing agent into the muck, uniformly stirring, then adding water and a composite activator, mixing to obtain slurry premixed fluid state curing soil, and filling and backfilling the foundation pit and the fertilizer tank with the slurry premixed fluid state curing soil.
8. The use method of the curing agent for the ready-mixed fluid solidified soil as claimed in claim 7, wherein the ratio of sand soil to clay in the residue soil is (0.1-1): (0.1-1), wherein the water content of the residue soil is 5-15%.
9. The use method of the curing agent for the ready-mixed fluid solidified soil as claimed in claim 8, wherein the adding ratio of the muck, the curing agent, the water and the composite activator is 10: (0.8-1.5): (1.5-4): (0.05-0.1).
10. The use method of the curing agent for the ready-mixed fluid solidified soil as claimed in claim 9, wherein the composite activator is composed of the following raw materials by mass percent: 55-65% of aluminum sulfate slag, 15-25% of sodium sulfate and 10-25% of calcium lignosulphonate.
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Cited By (4)
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| CN115974503A (en) * | 2023-03-17 | 2023-04-18 | 中建材中岩科技有限公司 | Underwater anti-dispersion fluid sludge curing agent and preparation method and application thereof |
| CN115974505A (en) * | 2022-12-20 | 2023-04-18 | 青岛森建基础工程有限公司 | Flow state concrete and preparation method thereof |
| CN116023078A (en) * | 2023-01-31 | 2023-04-28 | 南京苏逸实业有限公司 | Fluidized solidified soil prepared from engineering waste residue soil and method |
| CN116160537A (en) * | 2023-04-23 | 2023-05-26 | 华南理工大学 | Solidified soil production system and production process for recycling residue soil |
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| CN115974503A (en) * | 2023-03-17 | 2023-04-18 | 中建材中岩科技有限公司 | Underwater anti-dispersion fluid sludge curing agent and preparation method and application thereof |
| CN116160537A (en) * | 2023-04-23 | 2023-05-26 | 华南理工大学 | Solidified soil production system and production process for recycling residue soil |
| CN116160537B (en) * | 2023-04-23 | 2023-06-20 | 华南理工大学 | Solidified soil production system and production process for recycling residue soil |
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