CN115057652A - Volcanic ash based composite synergistic regulator and volcanic ash based cement slurry - Google Patents
Volcanic ash based composite synergistic regulator and volcanic ash based cement slurry Download PDFInfo
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
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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
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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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
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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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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Abstract
The invention relates to a volcanic ash-based composite synergistic regulator and volcanic ash-based cement slurry, wherein the specific surface area of the regulator is 460-600m 2 Per kg, by weight, comprising the following components: 40-60 parts of volcanic ash, 1-30 parts of other materials, 2-10 parts of grinding aid, 1-10 parts of activating agent, 1-10 parts of dispersing agent, 1-10 parts of suspending agent, 1-10 parts of flatting agent and 3-15 parts of reinforcing agent. It is cheap, non-toxic, harmless, pollution-free to underground water and environment, and is an environment friendly material with excellent performance and convenient construction. The grouting material slurry suspension prepared by the regulatorThe sealing agent has good performance and fluidity, can fill gaps in application sites, is densely filled, does not shrink solidified bodies, and can achieve the purposes of completely plugging and sealing holes and avoiding gas leakage.
Description
Technical Field
The invention relates to the field of materials, in particular to a volcanic ash-based composite synergistic conditioning agent and a volcanic ash-based cement paste.
Background
In the prior art, in order to ensure safety, a plurality of drilled holes need to be sealed by using cement paste, for example, the sealing of the drilled holes for measuring the gas pressure in a coal mine needs to be ensured, so that the gas leakage can be avoided.
At present, common cement is commonly used for sealing holes, and the common cement has poor fluidity, so that the phenomena of incompact sealing filling, incomplete filling of on-site gaps, slow condensation and easy shrinkage of solidified bodies often occur, and the sealing quality is poor; and the expansion cement is adopted in the other part, but the price of the expansion cement is high, and the hole sealing cost is greatly improved.
Based on the volcanic ash-based composite synergistic regulator and the volcanic ash-based cement paste, the volcanic ash-based composite synergistic regulator and the volcanic ash-based cement paste are low in price, non-toxic and harmless, and can achieve the purposes of completely plugging and sealing holes and avoiding gas leakage.
Disclosure of Invention
The invention aims to solve the technical problem of providing a volcanic ash-based composite synergistic modifier and a volcanic ash-based cement slurry.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
in one aspect, a volcanic ash based composite synergistic regulator is provided, and the specific surface area of the regulator is 460-600m 2 Per kg, by weight, comprising the following components: 40-60 parts of volcanic ash, 1-30 parts of other materials, 2-10 parts of grinding aid, 1-10 parts of activating agent, 1-10 parts of dispersing agent, 1-10 parts of suspending agent, 1-10 parts of flatting agent and 3-15 parts of reinforcing agent.
In one embodiment of the invention, the volcanic ash is any one or a mixture of any two or more of fine particles, lava lumps and volcanic rocks which are ejected during volcanic eruption;
the other materials are any one or the mixture of any two or more than two of fly ash, coal gangue, calcium carbonate and aluminate cement clinker.
In one embodiment of the invention, the grinding aid is one or a mixture of two or more of urea, triisopropanolamine, sodium hexametaphosphate, phospholipid, triethylhexylphosphoric acid and sodium pyrophosphate;
the activating agent is one or a mixture of any two or more of ethylenediamine phosphate, sodium stearate, sulfuric acid, protein, propylenediamine phosphate and ferric hydroxide.
In one embodiment of the invention, the dispersant is any one or a mixture of any two or more of sodium tripolyphosphate, ethylene glycol, calcium lignosulphonate, polypropylene glycol, methyl amyl alcohol and fatty acid glycol ester;
the suspending agent is any one or a mixture of any two or more of fumed silica, xanthate, potassium ethyl xanthate, magnesium aluminum silicate, polyvinyl ether and chitin;
the leveling agent is any one or a mixture of any two or more of epoxypropane, polyvinyl alcohol, polyethyleneimine, polyacrylic acid, sodium polyacrylate and glycerol.
In one embodiment of the invention, the reinforcing agent is any one or a mixture of any two or more of silica fume, aluminum sulfate, alumina, lithium carbonate, potassium tripolyphosphate and carboxymethyl cellulose.
In a second aspect, there is provided a method of preparing a pozzolan-based composite co-regulator as described in the first aspect, comprising the steps of:
(1) mixing 40-60 parts of volcanic ash, 1-30 parts of other materials and 2-10 parts of grinding aid, and grinding until the surface area is 420-560m 2 Obtaining mixed powder A by/kg;
(2) mixing and grinding the mixed powder A with 1-10 parts of activating agent, 1-10 parts of dispersing agent, 1-10 parts of suspending agent, 1-10 parts of flatting agent and 3-15 parts of reinforcing agent until the specific surface area is 460-600m 2 And/kg, obtaining the volcanic ash based composite synergistic regulator.
As an embodiment of the invention, it comprises the following components by weight: 1-10 parts of the volcanic ash-based composite synergistic modifier, 50-70 parts of cement, 29-49 parts of auxiliary powder and water are uniformly mixed to prepare cement slurry of the volcanic ash-based composite synergistic modifier.
In one embodiment of the invention, the cement is any one of ordinary portland cement, pozzolanic portland cement, fly ash portland cement, slag portland cement, and composite portland cement, or a mixture of any two or more of them.
In one embodiment of the invention, the auxiliary powder is one or a mixture of two or more of bentonite powder, slag powder, steel slag powder and quartz powder.
In a third aspect, there is provided a method of using the pozzolan-based composite synergistic modifier cement slurry of the second aspect, the method comprising:
(1) 1-10 parts of volcanic ash-based composite synergistic regulator, 50-70 parts of cement and 29-49 parts of auxiliary powder are measured into powder C,
(2) and adding 0.28-0.4 part of water into 1 part of the powder C by weight, uniformly mixing by a pulping system to prepare volcanic ash-based cement slurry, and conveying the volcanic ash-based cement slurry to an underground grouting plugging site through a grouting pipeline by a slurry pump.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the volcanic ash based composite synergistic regulator provided by the invention belongs to an environment-friendly grouting material regulator, is nontoxic and tasteless in material, has no pollution to underground water and environment, and is an environment-friendly material with excellent performance and convenient construction.
In addition, the volcanic ash-based composite synergistic regulator is matched with cement and auxiliary material powder for use, and the prepared cement slurry of the volcanic ash-based composite synergistic regulator has good suspension property and fluidity, so that the stability and the filling property are high, gaps in an application field can be filled fully, the filling is compact, a solidified body is not shrunk, the durability is good, the ageing resistance and the impermeability are good, the compactness of the solidified body can be improved, the purpose of completely plugging is achieved, and the volcanic ash-based composite synergistic regulator is particularly suitable for hole sealing for measuring gas pressure in a drilled hole in a coal mine, and gas leakage is avoided.
When the volcanic ash-based cement paste is used, gaps in an application site can be densely and fully filled, the compactness of a solidified body is improved, the purpose of complete plugging is achieved, and gas leakage can be avoided.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail and fully with reference to the following embodiments.
Example 1:
1. preparation of pozzolan-based composite synergistic regulator
(1) Mixing 40 parts of volcanic ash, 30 parts of fly ash, 0.5 part of triisopropanolamine and 0.5 part of triethylhexylphosphoric acid by weight, and grinding the mixture to the surface area of 450m 2 Obtaining mixed powder from kg;
(2) mixing and grinding the mixed powder with 2 parts of protein, 2 parts of ethylene diamine phosphate, 7 parts of sodium tripolyphosphate, 2 parts of ethylene glycol, 0.5 part of fumed silica, 0.5 part of xanthate, 2 parts of propylene oxide, 3 parts of polyvinyl alcohol, 9 parts of alumina and 1 part of lithium carbonate until the specific surface area is 460m 2 And/kg, obtaining the volcanic ash based composite synergistic regulator.
2. Preparation of pozzolana-based composite synergistic regulator cement slurry
(1) 1 part of volcanic ash based composite synergistic regulator, 70 parts of slag portland cement, 24 parts of steel slag powder and 5 parts of bentonite powder are measured into D powder by weight,
(2) and adding 0.28 part of water into 1 part of the powder D by weight, uniformly mixing by a pulping system to prepare the pozzolana-based cement slurry, and measuring the physical and mechanical properties of the slurry.
Example 2:
1. preparation of pozzolan-based composite synergistic regulator
(1) Mixing 60 parts of volcanic rock, 5 parts of coal gangue, 5 parts of calcium carbonate, 8 parts of sodium hexametaphosphate and 2 parts of sodium pyrophosphate by weight, and grinding to obtain a powder with a surface area of 420m 2 Obtaining mixed powder from kg;
(2) mixing the mixed powder with 0.3 part of phosphoric acid propane diamine, 0.7 part of ferric hydroxide, 3 parts of methyl amyl alcohol and 2 parts of fatty acid ethylene glycolAlcohol ester, 9 parts of magnesium aluminum silicate, 1 part of chitin, 0.8 part of polyacrylic acid, 0.2 part of glycerol, 2 parts of potassium tripolyphosphate and 1 part of carboxymethyl cellulose are mixed and ground together until the specific surface area is 480m 2 And/kg, obtaining the volcanic ash based composite synergistic regulator.
2. Preparation of pozzolana-based composite synergistic regulator cement slurry
(1) 10 portions of volcanic ash based composite synergistic regulator, 50 portions of fly ash portland cement, 10 portions of bentonite powder and 30 portions of quartz powder are measured to be E powder material,
(2) and adding 0.4 part of water into 1 part of the E powder by weight, uniformly mixing by a pulping system to prepare the pozzolana-based cement slurry, and measuring the physical and mechanical properties of the slurry.
Example 3:
1. preparation of pozzolan-based composite synergistic regulator
(1) Mixing 50 parts of lava rock, 4 parts of aluminate cement clinker, 4 parts of urea and 1 part of phospholipid by weight, and grinding to a surface area of 560m 2 Obtaining mixed powder from kg;
(2) mixing and grinding the mixed powder with 4 parts of sodium stearate, 6 parts of ammonium sulfate, 0.6 part of calcium lignosulphonate, 0.4 part of polypropylene glycol, 3 parts of polyvinyl ether, 2 parts of potassium ethylxanthate, 6 parts of polyethyleneimine, 4 parts of sodium polyacrylate, 12 parts of silica fume and 3 parts of aluminum sulfate until the specific surface area is 600m 2 Powder of/kg.
2. Preparation of pozzolana-based composite synergistic regulator cement slurry
(1) 5 parts of volcanic ash-based composite synergistic regulator, 46 parts of ordinary portland cement and 49 parts of slag powder are measured to be F powder in weight,
(2) and adding 0.35 part of water into 1 part of the F powder by weight, uniformly mixing by a pulping system to prepare the pozzolana-based cement slurry, and measuring the physical and mechanical properties of the slurry.
Comparative example 1:
1. preparation of volcanic ash-based composite synergistic regulator
(1) 50 parts of lava rock and 4 parts of aluminate cement by weightMixing clinker, 4 parts of urea and 1 part of phospholipid, and grinding the mixture to a surface area of 560m 2 Obtaining mixed powder from kg;
(2) mixing and grinding the mixed powder with 4 parts of sodium stearate, 6 parts of ammonium sulfate, 12 parts of silica fume and 3 parts of aluminum sulfate until the specific surface area is 600m 2 Powder of/kg.
2. Preparation of pozzolana-based composite synergistic regulator cement slurry
(1) 5 portions of volcanic ash based composite synergistic conditioning agent, 46 portions of ordinary portland cement and 49 portions of slag powder are measured to be F1 powder,
(2) and adding 0.35 part of water into 1 part of F1 powder by weight, uniformly mixing by a pulping system to prepare the pozzolana-based cement slurry, and measuring the physical and mechanical properties of the slurry.
Comparative example 2:
1. preparation of pozzolan-based composite synergistic regulator
(1) Mixing 50 parts of lava rock, 4 parts of aluminate cement clinker, 4 parts of urea and 1 part of phospholipid by weight, and grinding to a surface area of 560m 2 Obtaining mixed powder from kg;
(2) mixing and grinding the mixed powder with 4 parts of sodium stearate, 6 parts of ammonium sulfate, 3 parts of polyvinyl ether, 2 parts of potassium ethyl xanthate, 12 parts of silica fume and 3 parts of aluminum sulfate until the specific surface area is 600m 2 Powder of/kg.
2. Preparation of pozzolana-based composite synergistic regulator cement slurry
(1) 5 portions of volcanic ash based composite synergistic conditioning agent, 46 portions of ordinary portland cement and 49 portions of slag powder are measured to be F2 powder,
(2) and adding 0.35 part of water into 1 part of F2 powder by weight, uniformly mixing by a pulping system to prepare the pozzolana-based cement slurry, and measuring the physical and mechanical properties of the slurry.
Comparative example 3:
1. preparation of pozzolan-based composite synergistic regulator
(1) Mixing 50 parts of lava rock, 4 parts of aluminate cement clinker, 4 parts of urea and 1 part of phospholipid by weight, and grindingTo a surface area of 560m 2 Obtaining mixed powder from kg;
(2) mixing and grinding the mixed powder with 4 parts of sodium stearate, 6 parts of ammonium sulfate, 0.6 part of wood calcium, 0.4 part of polypropylene glycol, 12 parts of silica fume and 3 parts of aluminum sulfate until the specific surface area is 600m 2 Powder of/kg.
2. Preparation of pozzolana-based composite synergistic regulator cement paste
(1) 5 portions of volcanic ash based composite synergistic conditioning agent, 46 portions of ordinary portland cement and 49 portions of slag powder are measured to be F3 powder,
(2) and adding 0.35 part of water into 1 part of F3 powder by weight, uniformly mixing by a pulping system to prepare the pozzolana-based cement slurry, and measuring the physical and mechanical properties of the slurry.
Comparative example 4:
1. preparation of pozzolan-based composite synergistic regulator
Mixing and grinding 50 parts of lava rock, 4 parts of aluminate cement clinker, 4 parts of urea, 1 part of phospholipid, 4 parts of sodium stearate, 6 parts of ammonium sulfate, 0.6 part of calcium lignosulphonate, 0.4 part of polypropylene glycol, 3 parts of polyvinyl ether, 2 parts of potassium ethylxanthate, 6 parts of polyethyleneimine, 4 parts of sodium polyacrylate, 12 parts of silica fume and 3 parts of aluminum sulfate by weight to obtain a mixed powder with a specific surface area of 600m 2 Powder of/kg.
2. Preparation of pozzolana-based composite synergistic regulator cement slurry
(1) 5 portions of volcanic ash based composite synergistic conditioning agent, 46 portions of ordinary portland cement and 49 portions of slag powder are measured to be F4 powder,
(2) and adding 0.35 part of water into 1 part of F4 powder by weight, uniformly mixing by a pulping system to prepare the pozzolana-based cement slurry, and measuring the physical and mechanical properties of the slurry.
Comparative example 5:
1. preparation of pozzolan-based composite synergistic regulator
(1) Mixing 50 parts of lava rock, 4 parts of aluminate cement clinker, 4 parts of urea and 1 part of phospholipid by weight, and grinding to a surface area of 560m 2 Obtaining mixed powder from kg;
(2) mixing and grinding the mixed powder with 4 parts of sodium stearate, 6 parts of ammonium sulfate, 0.6 part of wood calcium, 0.4 part of polypropylene glycol, 3 parts of polyvinyl ether, 2 parts of potassium ethylxanthate, 6 parts of polyethyleneimine, 4 parts of sodium polyacrylate, 12 parts of silica fume and 3 parts of aluminum sulfate until the specific surface area is 600m 2 Powder of/kg.
2. Preparation of pozzolana-based composite synergistic regulator cement slurry
(1) 5 parts of volcanic ash-based composite synergistic regulator and 46 parts of ordinary portland cement are measured to be F5 powder;
(2) and adding 0.35 part of water into 1 part of F5 powder by weight, uniformly mixing by a pulping system to prepare the pozzolana-based cement slurry, and measuring the physical and mechanical properties of the slurry.
Effect example 1:
the physical properties, flow cone fluidity and bleeding rate of the slurries obtained in examples 1 to 3 were measured by GB/T50448-2015 and the compressive strength was measured by JC/T984-2011, and the results are shown in Table 1:
as can be seen from Table 1, the pozzolan-based composite synergistic modifier is used together with cement and auxiliary material powder to prepare the pozzolan-based composite synergistic modifier cement slurry, and the pozzolan-based composite synergistic modifier has good suspension property and fluidity, and high stability and pourability. Therefore, the sealing agent can fill gaps in an application site, is densely filled, does not shrink a solidified body, has good durability, is not aged, has good anti-permeability performance, improves the compactness of the solidified body, and achieves the aim of completely plugging and sealing.
Effect example 2:
the physical property profiles of the slurries obtained from comparative examples 2 to 5 and example 3, respectively, are shown in table 2:
the comparative examples 1, 2 and 3 respectively reduce different additives, although the grinding process is unchanged, the composite synergistic effect of the regulator is reduced due to the reduction of the different additives, and the comparison with the data of the example 3 shows that the bleeding rate is increased and the strength of each age period is reduced.
Comparative example 4 all raw materials were ground together and compared with the data of example 3, it can be seen that the bleeding rate was increased and the strength at each age was decreased.
Comparative example 5 no auxiliary powder was used in the preparation of pozzolan-based composite synergistic conditioner cement slurries, and as can be seen by comparison with the data in example 3, the strength was increased for 1d, 3d, but decreased for 28 d.
Claims (10)
1. The volcanic ash-based composite synergistic regulator is characterized in that the specific surface area of the regulator is 460-600m 2 Per kg, by weight, comprising the following components: 40-60 parts of volcanic ash, 1-30 parts of other materials, 2-10 parts of grinding aid, 1-10 parts of activating agent, 1-10 parts of dispersing agent, 1-10 parts of suspending agent, 1-10 parts of flatting agent and 3-15 parts of reinforcing agent.
2. The pozzolan-based composite synergistic modifier of claim 1, wherein the pozzolan is any one or a mixture of any two or more of fine particles, lava lumps, and volcanic rocks ejected during volcanic eruption;
the other materials are any one or the mixture of any two or more than two of fly ash, coal gangue, calcium carbonate and aluminate cement clinker.
3. The pozzolan-based composite synergistic modifier of claim 1, wherein the grinding aid is any one of urea, triisopropanolamine, sodium hexametaphosphate, phospholipid, triethylhexylphosphoric acid and sodium pyrophosphate, or a mixture of any two or more of the above;
the activating agent is one or a mixture of any two or more of ethylenediamine phosphate, sodium stearate, sulfuric acid, protein, propylenediamine phosphate and ferric hydroxide.
4. The pozzolan-based composite synergistic modifier of claim 1, wherein the dispersant is any one or a mixture of any two or more of sodium tripolyphosphate, ethylene glycol, calcium lignosulphonate, polypropylene glycol, methyl amyl alcohol and fatty acid glycol ester;
the suspending agent is any one or a mixture of any two or more of fumed silica, xanthate, potassium ethyl xanthate, magnesium aluminum silicate, polyvinyl ether and chitin;
the leveling agent is any one or a mixture of any two or more of epoxypropane, polyvinyl alcohol, polyethyleneimine, polyacrylic acid, sodium polyacrylate and glycerol.
5. The pozzolan-based composite synergistic modifier of claim 1, wherein the reinforcing agent is any one or a mixture of any two or more of silica fume, aluminum sulfate, alumina, lithium carbonate, potassium tripolyphosphate and carboxymethyl cellulose.
6. A method of preparing a pozzolan-based composite co-regulator of claim 1, comprising the steps of:
(1) mixing 40-60 parts of volcanic ash, 1-30 parts of other materials and 2-10 parts of grinding aid, and grinding until the surface area is 420-560m 2 Obtaining mixed powder A by/kg;
(2) mixing and grinding the mixed powder A with 1-10 parts of activating agent, 1-10 parts of dispersing agent, 1-10 parts of suspending agent, 1-10 parts of flatting agent and 3-15 parts of reinforcing agent until the specific surface area is 460-600m 2 And/kg, obtaining the volcanic ash based composite synergistic regulator.
7. The pozzolan-based composite synergistic regulator cement slurry is characterized by comprising the following components in parts by weight: 1-10 parts of the volcanic ash-based composite synergistic modifier, 50-70 parts of cement, 29-49 parts of auxiliary powder and water are uniformly mixed to prepare cement slurry of the volcanic ash-based composite synergistic modifier.
8. The pozzolan-based composite synergistic modifier cement slurry of claim 7, wherein the cement is any one of ordinary portland cement, pozzolanic portland cement, fly ash portland cement, slag portland cement, and composite portland cement, or a mixture of any two or more of them.
9. The pozzolan-based composite synergistic modifier cement slurry according to claim 7, wherein the auxiliary powder is one or a mixture of two or more of bentonite powder, slag powder, steel slag powder and quartz powder.
10. The method of using the pozzolan-based composite synergistic regulator cement mortar of claim 7, wherein the method comprises:
(1) 1-10 parts of volcanic ash-based composite synergistic regulator, 50-70 parts of cement and 29-49 parts of auxiliary powder are measured into powder C,
(2) and adding 0.28-0.4 part of water into 1 part of the powder C by weight, uniformly mixing by a pulping system to prepare volcanic ash-based cement slurry, and conveying the volcanic ash-based cement slurry to an underground grouting plugging site through a grouting pipeline by a slurry pump.
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