CN109354461B - High polymer composite grouting material and preparation method thereof - Google Patents
High polymer composite grouting material and preparation method thereof Download PDFInfo
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- CN109354461B CN109354461B CN201811429398.5A CN201811429398A CN109354461B CN 109354461 B CN109354461 B CN 109354461B CN 201811429398 A CN201811429398 A CN 201811429398A CN 109354461 B CN109354461 B CN 109354461B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- 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 the field of high polymer composite grouting materials, and particularly discloses a high polymer composite grouting material and a preparation method thereof. Adding the welan gum, polyether polyol, epoxidized soybean oil, a chain extender, a catalyst, a foaming agent and a defoaming agent into a container in proportion, controlling the heating temperature to be 30-50 ℃, and uniformly stirring to prepare a material A; adding ordinary portland cement, solid waste and water into a reaction vessel and stirring; and adding the material A and isocyanate in a stirring state, and continuously stirring and mixing for 10-30 min to obtain the high polymer composite grouting material. The high polymer composite grouting material can solve the engineering problems of coal goaf, highway goaf, pavement collapse, subgrade subsidence, dam water plugging, roof water leakage and the like, has the characteristics of simple preparation process, environmental friendliness, high compressive strength, good waterproof performance, low cost and the like, saves grouting cost and construction period, can recycle resources, and is favorable for protecting the environment.
Description
Technical Field
The invention relates to the technical field of high polymer composite grouting materials, in particular to a high polymer composite grouting material and a preparation method thereof.
Background
In recent years, the development of infrastructure construction is rapid, the annual demand of Asian infrastructure investment is about $ 1.7 trillion, and the annual demand of Asian infrastructure investment is about $ 8 billion. Coal mining and mineral excavation can not avoid forming a goaf, the goaf refers to a cavity area left after underground mineral products are mined, and surface subsidence can generate continuous or non-continuous deformation, so that a series of engineering problems such as environmental rock and soil are brought, such as road collapse, cracks, house collapse and the like, and great hidden dangers are left for engineering construction. How to repair the goaf to prevent the mine engineering construction diseases becomes the heaviest of the current goaf engineering construction, and goaf grouting becomes the primary choice for solving the goaf problem. Cement-water glass, cement-fly ash, high polymer and the like are commonly used as grouting materials for goafs, wherein the cement-water glass and the cement-fly ash have the problems that the grouting amount cannot be accurately controlled, and the cement-water glass and the cement-fly ash cannot be blocked when water is gushed in the goafs; the high polymer can accurately control the grouting amount and block water burst, but the high polymer is expensive and is usually applied to emergency rescue. High-quality and low-price materials capable of treating the diseases of the goaf and related grouting technologies are urgently needed.
Disclosure of Invention
The invention provides a high polymer composite grouting material and a preparation method thereof, aiming at solving the engineering problems of coal goaf, highway goaf, road surface collapse, roadbed subsidence, dam water plugging, roof water leakage and the like.
The technical scheme adopted by the invention for realizing the aim is as follows:
a high polymer composite grouting material is prepared from the following raw materials in percentage by mass:
rubber for a warm wheel: polyether polyol: epoxidized soybean oil: chain extender: catalyst: foaming agent: defoaming agent: isocyanate: ordinary portland cement: solid waste: water ═ 5-10: 30: 10: 2: (0.2-1.0): (0.5-2): 0.2: (40-60): (80-120): (40-60): (40-60); the solid waste is coal ash, furnace bottom slag or carbide slag;
further, the fly ash or furnace bottom slag is generated by the combustion of a circulating fluidized bed boiler;
the catalyst is one or more of triethylenediamine (also called triethylene diamine), dimethylcyclohexylamine, pentamethyldiethyltriamine, dibutyltin dilaurate, dibutyltin diacetate and potassium oleate, and is preferably dibutyltin dilaurate.
Further, the chain extender is one or more of dihydric alcohol and trihydric alcohol, and is preferably 1, 4-butanediol.
Further, the foaming agent is HFC245fa or supercritical CO2A fluid.
Further, the defoaming agent is silicone oil or castor oil.
Further, the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate and toluene diisocyanate, the mass ratio of the two is 1:1, and the two are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for use.
Further, the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol to the polyether polyol is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used.
The invention also provides a preparation method of the high polymer composite grouting material, which sequentially comprises the following steps:
firstly, adding a warm wheel adhesive, polyether polyol, epoxidized soybean oil, a chain extender, a catalyst, a foaming agent and a defoaming agent into a container in proportion, and uniformly stirring at the heating temperature of 30-50 ℃ to prepare a material A;
adding ordinary portland cement, solid waste and water into a reaction container and stirring;
and thirdly, adding the material A and the isocyanate into the reaction container in the second step under the stirring state, and continuously stirring and mixing for 10-30 min to prepare the high polymer composite grouting material.
Furthermore, the stirring in the preparation method adopts a magnetic stirrer for stirring at a low rotating speed, and the stirring speed is controlled to be 100-300 r/min.
Compared with the prior art, the invention has the following obvious advantages:
1. the mechanical strength is high. The high polymer composite grouting material prepared by the invention has the advantages of high compressive strength, high bending strength and the like, can be expanded and basically has no shrinkage.
2. The preparation process is simple, and the health-preserving requirement is avoided. The preparation method of the high polymer composite grouting material is simple and practical, does not need too many processing treatment processes, and simultaneously does not need to be maintained because the material contains polyurethane which can be quickly cured.
3. The cost is low. The high polymer composite grouting material has high cement and fly ash content, low high polymer content and corresponding cost over 50 percent lower than that of the high polymer.
Drawings
FIG. 1 is a top view of a schematic representation of a polymer composite grouting material (which is covered with a transparent plastic film) prepared in example 1 of the present invention.
FIG. 2 is a top view of a picture of a polymer composite grouting material (the surface of which is covered with a transparent plastic film) prepared in example 2 of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples.
Evaluation of mechanical properties: for the high polymer composite grouting material, the compressive strength and the bending strength are very important evaluation indexes, and the size of the high polymer composite grouting material is related to the application of the high polymer in engineering and cannot be ignored. The mechanical property test of the high polymer composite grouting material refers to ASTM D3501-05 and D3499-11 material mechanical property test standards. Slurry viscosity the viscosity at the indicated temperature was measured using a Brookfield viscometer. The permeability coefficient was measured by a variable head permeability test.
In the embodiment, the fly ash used is the fly ash generated by the combustion of the circulating fluidized bed boiler, the bottom slag used is the bottom slag generated by the combustion of the circulating fluidized bed boiler, and the median diameters (D50) of the fly ash, the bottom slag and the carbide slag are all less than or equal to 50 micrometers.
The Portland cement used in each example was commercially available Portland cement 42.5R.
The "parts" in the following examples are all referred to as "parts by weight".
Example 1
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: triethyldiamine: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: fly ash: water 5: 30: 10: 2: 0.2: 0.5: 0.2: 47.9: 95.8: 47.9: 47.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 5 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of triethyldiamine, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 30 ℃, and then stirring uniformly at 30 ℃ for 20min under the magnetic force of 100 revolutions per minute to prepare a material A;
placing 95.8 parts of ordinary portland cement, 47.9 parts of fly ash and 47.9 parts of water into a magnetic stirrer for continuous stirring for 30min, wherein the stirring speed is controlled at 100 revolutions per minute;
and thirdly, adding the material A and 47.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared in the embodiment has high compressive strength after curing, the compressive strength after curing for 24 hours is 35.0MPa, the bending strength is 18.0MPa,the initial slurry viscosity at 25 ℃ is 15 mPa.s, and the permeability coefficient reaches 10-7cm/s, expansion factor of 15 times, and almost no shrinkage after being placed for 24 hours at room temperature.
Example 2
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: triethyldiamine: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: fly ash: water 7: 30: 10: 2: 0.2: 0.5: 0.2: 49.9: 99.8: 49.9: 49.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 7 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of triethyldiamine, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 35 ℃, and then stirring uniformly at 35 ℃ for 20min under the magnetic force of 100 revolutions per minute to prepare a material A;
putting 99.8 parts of ordinary portland cement, 49.9 parts of fly ash and 49.9 parts of water into a magnetic stirrer, and continuously stirring for 30min, wherein the stirring speed is controlled at 100 revolutions per minute;
and thirdly, adding the material A and 49.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared by the embodiment has higher compressive strength after being cured,the curing compressive strength after 24 hours is 38.0MPa, the bending strength is 19.5MPa, the initial slurry viscosity at 25 ℃ is 16 mPa.s, and the permeability coefficient reaches 10-7cm/s, expansion factor 12 times, and almost no shrinkage after being left at room temperature for 24 hours.
Example 3
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: triethyldiamine: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: fly ash: water 9: 30: 10: 2: 0.2: 0.5: 0.2: 51.9: 103.8: 51.9: 51.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 9 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of triethyldiamine, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 40 ℃, and then stirring uniformly at 40 ℃ for 20min under the magnetic force of 200 revolutions per minute to prepare a material A;
placing 103.8 parts of ordinary portland cement, 51.9 parts of fly ash and 51.9 parts of water into a magnetic stirrer for continuous stirring for 40min, wherein the stirring speed is controlled at 100 revolutions per minute;
and thirdly, adding the material A and 51.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
This example systemThe prepared high polymer composite grouting material has high compressive strength after curing, the cured compressive strength after 24 hours is 42.0MPa, the bending strength is 23MPa, the initial slurry viscosity at 25 ℃ is 19mPa & s, and the permeability coefficient reaches 10-7cm/s, 10-fold expansion, and substantially no shrinkage after 24 hours at room temperature.
Example 4
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: triethyldiamine: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: fly ash: water 10: 30: 10: 2: 0.2: 0.5: 0.2: 52.9: 105.8: 52.9: 52.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 10 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of triethyldiamine, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 45 ℃, and then stirring uniformly at 45 ℃ for 15min under the magnetic force of 200 revolutions per minute to prepare a material A;
105.8 parts of ordinary portland cement, 52.9 parts of fly ash and 52.9 parts of water are put into a magnetic stirrer to be continuously stirred for 40min, and the stirring speed is controlled at 100 revolutions per minute;
and thirdly, adding the material A and 52.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared in the embodiment has high compressive strength after curing, the compressive strength after curing for 24 hours is 40.0MPa, the bending strength is 19MPa, the initial slurry viscosity at 25 ℃ is 17mPa & s, and the permeability coefficient reaches 10-7cm/s, a swelling factor of 9 times, and substantially no shrinkage after standing at room temperature for 24 hours.
Example 5
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: triethyldiamine: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: fly ash: water 5: 30: 10: 2: 0.2: 0.5: 0.2: 47.9: 95.8: 47.9: 47.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 5 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of triethyldiamine, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 30 ℃, and then stirring uniformly at 30 ℃ for 20min under the magnetic force of 100 revolutions per minute to prepare a material A;
placing 95.8 parts of ordinary portland cement, 47.9 parts of fly ash and 47.9 parts of water into a magnetic stirrer for continuous stirring for 30min, wherein the stirring speed is controlled at 200 revolutions per minute;
and thirdly, adding the material A and 47.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared in the embodiment has high compressive strength after curing, the compressive strength after curing for 24 hours is 35.6MPa, the bending strength is 18.2MPa, the initial slurry viscosity at 25 ℃ is 13mPa & s, and the permeability coefficient reaches 10-7cm/s, expansion factor of 18 times, and almost no shrinkage after being placed for 24 hours at room temperature.
Example 6
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: triethyldiamine: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: fly ash: water 5: 30: 10: 2: 0.2: 0.5: 0.2: 47.9: 95.8: 47.9: 47.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 5 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of triethyldiamine, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 30 ℃, and then stirring uniformly at 30 ℃ for 20min under the magnetic force of 100 revolutions per minute to prepare a material A;
placing 95.8 parts of ordinary portland cement, 47.9 parts of fly ash and 47.9 parts of water into a magnetic stirrer for continuous stirring for 30min, wherein the stirring speed is controlled at 300 revolutions per minute;
and thirdly, adding the material A and 47.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared in the embodiment has high compressive strength after curing, the compressive strength after curing for 24 hours is 36.1MPa, the bending strength is 18.8MPa, the initial slurry viscosity at 25 ℃ is 10mPa & s, and the permeability coefficient reaches 10-7cm/s, expansion factor of 21 times, and almost no shrinkage after being placed for 24 hours at room temperature.
Example 7
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: dibutyltin dilaurate: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: fly ash: water 5: 30: 10: 2: 0.2: 0.5: 0.2: 47.9: 95.8: 47.9: 47.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 5 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of dibutyltin dilaurate, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 30 ℃, and then stirring for 20min at 30 ℃ by the magnetic force of 100 revolutions per minute to uniformly stir the reaction solution to prepare a material A;
placing 95.8 parts of ordinary portland cement, 47.9 parts of fly ash and 47.9 parts of water into a magnetic stirrer for continuous stirring for 30min, wherein the stirring speed is controlled at 100 revolutions per minute;
and thirdly, adding the material A and 47.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared in the embodiment has high compressive strength after curing, the compressive strength after curing for 24 hours is 37.0MPa, the bending strength is 18.5MPa, the initial slurry viscosity at 25 ℃ is 16mPa & s, and the permeability coefficient reaches 10-7cm/s, expansion factor of 16 times, and almost no shrinkage after being placed for 24 hours at room temperature.
Example 8
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: potassium oleate: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: fly ash: water 5: 30: 10: 2: 0.2: 0.5: 0.2: 47.9: 95.8: 47.9: 47.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 5 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of potassium oleate, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 30 ℃, and then stirring uniformly at 30 ℃ for 20min under the magnetic force of 100 revolutions per minute to prepare a material A;
placing 95.8 parts of ordinary portland cement, 47.9 parts of fly ash and 47.9 parts of water into a magnetic stirrer for continuous stirring for 30min, wherein the stirring speed is controlled at 100 revolutions per minute;
and thirdly, adding the material A and 47.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared in the embodiment has high compressive strength after curing, the compressive strength after curing for 24 hours is 34.0MPa, the bending strength is 15.5MPa, the initial slurry viscosity at 25 ℃ is 13mPa & s, and the permeability coefficient reaches 10-7cm/s, expansion factor of 14 times, and no shrinkage after 24 hours at room temperature.
Example 9
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: triethyldiamine: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: carbide slag: water 5: 30: 10: 2: 0.2: 0.5: 0.2: 47.9: 95.8: 47.9: 47.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 5 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of triethyldiamine, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 30 ℃, and then stirring uniformly at 30 ℃ for 20min under the magnetic force of 100 revolutions per minute to prepare a material A;
placing 95.8 parts of ordinary portland cement, 47.9 parts of carbide slag and 47.9 parts of water into a magnetic stirrer for continuous stirring for 30min, wherein the stirring speed is controlled at 100 revolutions per minute;
and thirdly, adding the material A and 47.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared in the embodiment has high compressive strength after curing, the compressive strength after curing for 24 hours is 32.0MPa, the bending strength is 14.5MPa, the initial slurry viscosity at 25 ℃ is 13mPa & s, and the permeability coefficient reaches 10-7cm/s, expansion factor 11 times, and almost no shrinkage after 24 hours of standing at room temperature.
Example 10
The high polymer composite grouting material is prepared from the following raw materials in parts by weight: polyether polyol: epoxidized soybean oil: 1, 4-butanediol: triethyldiamine: HFC245 fa: castor seed oil: isocyanate: ordinary portland cement: furnace bottom slag: water 5: 30: 10: 2: 0.2: 0.5: 0.2: 47.9: 95.8: 47.9: 47.9.
wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 to the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24 hours and then are used;
the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate MDI and toluene diisocyanate TDI with the mass ratio of 1:1, and the mixture and the toluene diisocyanate TDI are dried in a vacuum drying oven at 65 ℃ for 2 hours and then cooled to room temperature for reuse;
a method for preparing a high polymer composite grouting material by using the material comprises the following steps:
adding 5 parts of welan gum, 30 parts of polyether polyol, 10 parts of epoxidized soybean oil, 2 parts of 1, 4-butanediol, 0.2 part of triethyldiamine, 0.5 part of HFC245fa and 0.2 part of castor seed oil into a beaker in sequence, heating to ensure that the temperature of a reaction solution is 30 ℃, and then stirring uniformly at 30 ℃ for 20min under the magnetic force of 100 revolutions per minute to prepare a material A;
secondly, 95.8 parts of ordinary portland cement, 47.9 parts of bottom slag and 47.9 parts of water are put into a magnetic stirrer to be continuously stirred for 30min, and the stirring speed is controlled at 100 revolutions per minute;
and thirdly, adding the material A and 47.9 parts of isocyanate into the magnetic stirrer in the second step under the stirring state, continuously stirring and mixing for 10min after the material A and the isocyanate are added to uniformly stir the mixture to prepare the high polymer composite grouting material, and injecting the high polymer composite grouting material into a mortar triple test mold by using a grouting machine to form a standard test piece for later use in the performance test of the high polymer composite grouting material.
The high polymer composite grouting material prepared in the embodiment has high compressive strength after curing, the compressive strength after curing for 24 hours is 31.0MPa, the bending strength is 12.0MPa, the initial slurry viscosity at 25 ℃ is 12mPa & s, and the permeability coefficient reaches 10-7cm/s, a swelling factor of 9 times, and substantially no shrinkage after standing at room temperature for 24 hours.
Claims (5)
1. A high polymer composite grouting material is prepared from the following raw materials in percentage by mass:
rubber for a warm wheel: polyether polyol: epoxidized soybean oil: chain extender: catalyst: foaming agent: defoaming agent: isocyanate: ordinary portland cement: solid waste: water = 5-10: 30: 10: 2: 0.2-1.0: 0.5-2: 0.2: 40-60: 80-120:40-60: 40-60; the solid waste is coal ash, furnace bottom slag or carbide slag;
the catalyst is one or more of triethyldiamine, dimethylcyclohexylamine, pentamethyldiethyltriamine, dibutyltin dilaurate, dibutyltin diacetate and potassium oleate;
the defoaming agent is castor oil;
the fly ash is generated by burning the circulating fluidized bed boiler;
the foaming agent is HFC245fa or supercritical CO2A fluid;
the chain extender is one or more of dihydric alcohol and trihydric alcohol.
2. The high polymer composite grouting material of claim 1, characterized in that the isocyanate is a mixture of 4,4' -diphenylmethane diisocyanate and toluene diisocyanate in a mass ratio of 1:1, and the two are dried in a vacuum drying oven at 65 ℃ for 2h and then cooled to room temperature for reuse.
3. The high polymer composite grouting material as claimed in claim 1, wherein the polyether polyol is a mixture of polyether polyol 303 and polyether polyol 204, the mass ratio of the polyether polyol 303 and the polyether polyol 204 is 1:1, and the polyether polyol are dried in a vacuum drying oven at 105 ℃ and 0.1atm for 24h and then used.
4. A method for preparing the high polymer composite grouting material according to any one of claims 1 to 3, which comprises the following steps in sequence:
firstly, adding a warm wheel adhesive, polyether polyol, epoxidized soybean oil, a chain extender, a catalyst, a foaming agent and a defoaming agent into a container in proportion, and uniformly stirring at the heating temperature of 30-50 ℃ to prepare a material A;
adding ordinary portland cement, solid waste and water into a reaction container and stirring;
and thirdly, adding the material A and the isocyanate into the reaction container in the second step under the stirring state, and continuously stirring and mixing for 10-30 min to prepare the high polymer composite grouting material.
5. The preparation method according to claim 4, wherein the stirring in the preparation method is performed by a magnetic stirrer, and the stirring speed is 100-300 rpm.
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| CN110054458B (en) * | 2019-04-30 | 2022-07-29 | 四川共拓岩土科技股份有限公司 | Composite grouting material and preparation method thereof |
| CN110183612B (en) * | 2019-05-24 | 2021-09-07 | 山西省交通科技研发有限公司 | Grouting material for quickly repairing underground engineering wall seepage water and preparation method thereof |
| CN110922091B (en) * | 2019-12-12 | 2021-08-06 | 山东一诺威聚氨酯股份有限公司 | Two-component polyurethane composition for concrete modification and preparation method thereof |
| CN112924335B (en) * | 2021-02-01 | 2023-04-18 | 郑州大学 | Method for testing dissolution curve of physical foaming agent in single-component high polymer |
| CN114988912A (en) * | 2022-07-13 | 2022-09-02 | 华北水利水电大学 | Preparation method of polymer foam concrete for filling cold-formed thin-wall steel |
| CN115246720A (en) * | 2022-07-29 | 2022-10-28 | 山西省交通科技研发有限公司 | Foaming low-carbon cement composite grouting material for loess subgrade pavement settlement and application thereof |
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