CN114230278A - High-strength non-shrinkage grouting material for subway engineering and preparation method thereof - Google Patents

High-strength non-shrinkage grouting material for subway engineering and preparation method thereof Download PDF

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CN114230278A
CN114230278A CN202111577597.2A CN202111577597A CN114230278A CN 114230278 A CN114230278 A CN 114230278A CN 202111577597 A CN202111577597 A CN 202111577597A CN 114230278 A CN114230278 A CN 114230278A
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parts
oil
grouting material
micro
resistant particles
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CN114230278B (en
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李亚林
王玉婷
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Sichuan Juli Building Material Technology Co ltd
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Sichuan Juli Building Material Technology Co ltd
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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
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/20—Waste materials; Refuse organic from macromolecular compounds
    • C04B18/22—Rubber, e.g. ground waste tires
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/38—Polysaccharides or derivatives thereof
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
    • C04B24/42—Organo-silicon compounds
    • 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
    • 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
    • C04B2111/203—Oil-proof or grease-repellant materials
    • 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
    • C04B2111/34—Non-shrinking or non-cracking materials
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The application relates to the field of grouting materials, and particularly discloses a high-strength non-shrinkage grouting material for subway engineering and a preparation method thereof, wherein the grouting material comprises the following raw materials in parts by weight: 100-160 parts of cement, 40-60 parts of water, 15-30 parts of reinforcing agent, 180-250 parts of quartz sand, 48-72 parts of micro-swelling stone, 10-22 parts of oil-resistant particles and 1-5 parts of polycarboxylic acid water reducer; the oil-resistant particles comprise the following raw materials: cetearyl dimethicone, algin, and a modified rubber material. The preparation method of the grouting material comprises the following steps: step 1, preparing oil-resistant particles; step 2, preparing the micro-expanded stone; and 3, uniformly stirring and mixing the cement, the water, the reinforcing agent, the quartz sand, the polycarboxylic acid water reducing agent, the micro-swelling stone and the oil-resistant particles according to the proportion to obtain the grouting material. The grouting material prepared by the method has the advantages of good early strength, high compressive strength, low shrinkage rate, low oil penetration height under the oil pressure of 0.8MPa and good oil resistance of the product.

Description

High-strength non-shrinkage grouting material for subway engineering and preparation method thereof
Technical Field
The application relates to the field of grouting materials, in particular to a high-strength non-shrinkage grouting material for subway engineering and a preparation method thereof.
Background
At present, as urban traffic is developed more and more, subways are spread more and more widely, grouting materials are generally used in subway engineering to reinforce and reinforce the parts of the subway engineering which are easy to damage,
the modified epoxy grouting material comprises A, B double components with the weight ratio of A to B being 2 to 1, wherein the A, B components are respectively proportioned according to the following parts by weight: the component A comprises: 85-90 parts of 128 epoxy resin and 10-15 parts of benzyl alcohol; and B component: 20-25 parts of 1, 3-cyclohexyldimethylamine, 40-50 parts of benzyl alcohol, 10-15 parts of 128 epoxy resin and 16-25 parts of 4, 4-diaminodiphenylmethane. The waterproof plugging building material has the advantages of low volatility, low smell and moderate curing speed, and the permeation resistance pressure, the tensile strength and the bonding strength can meet the standard requirements of waterproof plugging building material products.
However, in the test process, the inventor finds that oil substances such as lubricating oil and the like are mostly used in subway engineering, most of the oil substances have small relative density, low viscosity and strong permeability and are easy to destroy the adhesion between cement and aggregate, and as the grouting material is usually used for repair and reinforcement, the oil substances can invade in the hydration process, the oil substances can wrap cement particles which are not yet hydrated to separate water from the cement, and the cement particles cannot be hydrated due to the fact that the cement particles cannot contact water, so that the concrete cannot reach the due strength; particularly, the concrete formed after the grouting material is hardened can be contacted with oil substances for a long time, and the internal structure of the concrete can be damaged by the erosion of the oil substances, so that the structure of the concrete is loosened and collapsed, and the service life of the concrete is seriously influenced.
Disclosure of Invention
In order to effectively improve the oil resistance of the grouting material in the hydration process and the oil resistance of concrete formed after hardening, the application provides the high-strength non-shrinkage grouting material for subway engineering and the preparation method thereof.
In a first aspect, the application provides a high-strength non-shrinkage grouting material for subway engineering, which adopts the following technical scheme:
the high-strength non-shrinkage grouting material for subway engineering comprises the following raw materials in parts by weight: 100-160 parts of cement, 40-60 parts of water, 15-30 parts of reinforcing agent, 180-250 parts of quartz sand, 48-72 parts of micro-swelling stone, 10-22 parts of oil-resistant particles and 1-5 parts of polycarboxylic acid water reducer; the oil-resistant particles comprise the following raw materials in parts by weight: 2-5 parts of cetearyl polydimethylsiloxane, 0.5-1 part of seaweed gel and 12-20 parts of modified rubber material.
By adopting the technical scheme, the oil-resistant particles are added, so that the oil substances and the hydration product calcium hydroxide of the cement can be effectively prevented from generating chemical action to generate corresponding organic acid double salt in the cement hydration process, the internal structure of the concrete can be effectively prevented from being damaged by the organic acid double salt, the possibility that the oil substances wrap the cement particles can be effectively prevented, and the strength of the concrete can be improved; in the concrete forming process, the oil-resistant particles and the micro-swelling stones cooperate to form a stable oil-resistant structure in the concrete, so that the oil substances are further prevented from being immersed, and the oil resistance of the concrete is improved.
The micro-swelling stone can be used as an aggregate of concrete for filling, improves the self-compaction of the concrete, has good water retention property and micro-swelling property, effectively reduces the shrinkage of the concrete, obviously improves the shrinkage rate of the concrete, further reduces the generation of micro-cracks, prevents the immersion of oil substances, and improves the oil resistance of the concrete.
The cement is generally low-heat silicate cement with low hydration heat, and is matched with a reinforcing agent, so that the internal structure of the concrete is effectively adjusted, the self-compactness of the concrete is improved, internal capillary holes and micro cracks are reduced, oil substances are indirectly prevented from being immersed into the concrete, and the oil resistance of the concrete is further improved.
Preferably, the modified rubber material is prepared by the following preparation steps: irradiating rubber powder with ultraviolet at 80-90 deg.C and air relative humidity of 70-85% for 1-2 days to obtain base material; and mixing and stirring the base material and the styrene-acrylic emulsion uniformly, and maintaining for 30-45min to obtain the modified rubber material.
By adopting the technical scheme, the rubber powder is irradiated by ultraviolet rays under the conditions of high temperature and high humidity, the micro form and the apparent property of the rubber powder are changed, and the strength of the rubber powder is improved, so that the strength of concrete is improved; and mixing and stirring the base material and the styrene-acrylic emulsion, and maintaining to enable the styrene-acrylic emulsion to modify the rubber powder, and infiltrating through cracks generated on the surface of the rubber powder to improve the interfacial adhesion, so that the styrene-acrylic emulsion and a cementing material such as cement form more compact connection, the adhesion among the raw materials is improved, the acting force between the cement and oil-resistant particles is enhanced, the prepared concrete is more compact, and the strength of the concrete is further improved.
Preferably, the mass ratio of the rubber powder to the styrene-acrylic emulsion is (5-9): 1.
By adopting the technical scheme, the proportion of the rubber powder and the styrene-acrylic emulsion is optimized, the performance of the modified rubber material is further improved, the modified rubber material is well compatible with other components, the compatibility among the raw materials is improved, and the acting force between cement and oil-resistant particles is enhanced, so that the prepared concrete is more compact.
Preferably, the curing conditions are: the temperature is 50-60 ℃, and the relative humidity of air is 10-30%.
By adopting the technical scheme, the maintenance conditions are optimized, the styrene-acrylic emulsion is ensured to fully modify the rubber powder, and the modification effect on the rubber powder is improved.
Preferably, the slightly expanded stone comprises the following raw materials in parts by weight: 40-60 parts of palygorskite with 5-10mm continuous gradation, 2-4 parts of cyclodextrin, 0.5-2 parts of polymethylsilsesquioxane and 1-2 parts of potassium lactate.
Through adopting above-mentioned technical scheme, adopt the paligorskite of gradation so that the inside aggregate of concrete fills closely, improves the intensity of concrete. The palygorskite has excellent specific surface area and adsorption capacity, and can play a certain role in moisture absorption when being matched with potassium lactate, so that the palygorskite has certain water retention property, reduces the shrinkage of concrete caused by water evaporation loss, and achieves the purpose of reducing the shrinkage; palygorskite, cyclodextrin, polymethylsilsesquioxane and potassium lactate are matched under certain conditions, so that the slightly-expanded stone has certain slightly-expanded performance after concrete is formed, and forms a stable oil-blocking structure with oil-resistant particles in the concrete in the forming process, so that the oil substances are prevented from being immersed, and the oil resistance of the concrete is improved.
Preferably, the reinforcing agent is calcium silicate, fly ash floating beads and silica fume.
By adopting the technical scheme, the fly ash floating bead is spherical particles, the surface of the fly ash floating bead is closed and smooth, the fly ash floating bead has excellent flowability and dispersibility in cement, and the construction performance of the grouting material can be improved. The calcium silicate, the fly ash floating beads and the silica fume all have hydration activity and cementing capacity, and the strength and the self-compactness of the concrete can be effectively improved along with the progress of hydration time.
Preferably, the quartz sand is composed of the following raw materials in percentage by mass: 6-8% of 10-20 mesh quartz sand, 8-10% of 20-40 mesh quartz sand, 4-6% of 70-140 mesh quartz sand and the balance of 40-70 mesh quartz sand.
By adopting the technical scheme, the particle size ratio and components of the quartz sand are optimized, the internal structure of the concrete is effectively improved, and the comprehensive performance of the concrete is improved.
In a second aspect, the application provides a preparation method of a high-strength non-shrinkage grouting material for subway engineering, which adopts the following technical scheme:
a preparation method of a high-strength non-shrinkage grouting material for subway engineering comprises the following steps:
step 1, preparing oil-resistant particles: mixing cetearyl polydimethylsiloxane, seaweed gel and modified rubber material uniformly according to the proportion, and then extruding and granulating to prepare oil-resistant particles with particle size of less than 0.8 mm;
step 2, preparing the micro-expanded stone;
and 3, uniformly stirring and mixing the cement, the water, the reinforcing agent, the quartz sand, the polycarboxylic acid water reducing agent, the micro-swelling stone and the oil-resistant particles according to the proportion to obtain the grouting material.
Preferably, the slightly expanded stone comprises the following preparation steps:
step a, adding palygorskite into citric acid with the mass fraction of 4-8%, wherein the mass ratio of the palygorskite to the citric acid is (10-16):1, and reacting for 25-40min at the temperature of 30-45 ℃;
and step b, uniformly stirring the palygorskite prepared in the step a, the polymethylsilsesquioxane and the potassium lactate, heating to 60-80 ℃, and keeping the temperature for 10-20min to prepare the micro-expanded stone.
By adopting the technical scheme, the polymethylsilsesquioxane, the seaweed gel and the modified rubber material are uniformly mixed and then extruded for granulation, the seaweed gel plays a good film forming role, and when the oil-resistant particles are mixed with other raw material components, a stable oil-resistant structure is formed in the concrete, so that the oil resistance of the concrete is improved.
The palygorskite is added into citric acid for reaction treatment, the citric acid is adopted to modify the microstructure inside the palygorskite, the adsorbability and the cohesiveness of the palygorskite are improved, so that the formed micro-expanded stone has good water retention and micro-expansion performance, the shrinkage rate of concrete is effectively reduced, meanwhile, the micro-expanded stone has good compatibility with other raw materials, can be effectively used as aggregate to be filled inside the concrete, and forms a stable oil-blocking structure with cream particles, and the oil resistance of the concrete is improved.
In summary, the present application has the following beneficial effects:
1. the oil-resistant particles can effectively prevent oil substances from generating chemical action with hydration product calcium hydroxide of cement to generate corresponding organic acid double salt in the cement hydration process, so that the internal structure of concrete is effectively prevented from being damaged by the organic acid double salt, the possibility that the oil substances wrap the cement particles is effectively prevented, and the strength of the concrete is improved; in the concrete forming process, the oil-resistant particles and the micro-swelling stones cooperate to form a stable oil-resistant structure in the concrete, so that the oil substances are further prevented from being immersed, and the oil resistance of the concrete is improved.
2. The micro-swelling stone can be used as an aggregate of concrete for filling, improves the self-compaction of the concrete, has good water retention property and micro-swelling property, effectively reduces the shrinkage of the concrete, obviously improves the shrinkage rate of the concrete, further reduces the generation of micro-cracks, prevents the immersion of oil substances, and improves the oil resistance of the concrete.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials used in the application are common commercially available raw materials, wherein the rubber powder is nitrile rubber, the particle size is 500-800 meshes, the nitrile rubber is purchased from Shanghai plastic raw material Co., Ltd, Dongguan, and the cement is P42.5 portland cement.
Examples of oil-resistant particles
Preparation example 1
The oil-resistant particles comprise the following preparation steps:
s1, performing ultraviolet irradiation on rubber powder under the irradiation of a 300W ultraviolet lamp at the temperature of 90 ℃ and the relative air humidity of 85% for 2 days to prepare a base material; mixing the base material and the styrene-acrylic emulsion, uniformly stirring, and curing at the temperature of 50 ℃ and the relative air humidity of 30% for 45min to obtain a modified rubber material; wherein the mass ratio of the rubber powder to the styrene-acrylic emulsion is 5: 1;
s2, uniformly mixing 2kg of cetearyl dimethyl silicone polymer, 0.5kg of seaweed gel and 12kg of modified rubber material, and then extruding and granulating to obtain oil-resistant particles with particle size of less than 0.8 mm.
Preparation example two
The oil-resistant particles comprise the following preparation steps:
s1, performing ultraviolet irradiation on rubber powder under the irradiation of a 300W ultraviolet lamp at the temperature of 80 ℃ and the relative air humidity of 70%, wherein the irradiation time is 1 day, and preparing a base material; mixing the base material and the styrene-acrylic emulsion, uniformly stirring, and curing at the temperature of 60 ℃ and the relative air humidity of 10% for 30min to obtain a modified rubber material; wherein the mass ratio of the rubber powder to the styrene-acrylic emulsion is 9: 1;
s2, uniformly mixing 5kg of cetearyl polydimethylsiloxane, 1kg of seaweed gel and 20kg of modified rubber material, and then extruding and granulating to obtain oil-resistant particles with particle size of less than 0.8 mm.
Preparation example three
The oil-resistant particles comprise the following preparation steps:
s1, performing ultraviolet irradiation on rubber powder under the irradiation of a 300W ultraviolet lamp at the temperature of 80 ℃ for 1 day to prepare a base material; mixing the base material and the styrene-acrylic emulsion, uniformly stirring, and curing at the temperature of 60 ℃ and the relative air humidity of 20% for 40min to obtain a modified rubber material; wherein the mass ratio of the rubber powder to the styrene-acrylic emulsion is 7.5: 1;
s2, uniformly mixing 3kg of cetearyl dimethyl silicone polymer, 0.6kg of seaweed gel and 18kg of modified rubber material, and then extruding and granulating to obtain oil-resistant particles with particle size of less than 0.8 mm.
Preparation example four
The difference from the third preparation example is that the dosage of the rubber powder is 10kg, the dosage of the styrene-acrylic emulsion is 10kg, and the mass ratio of the rubber powder to the styrene-acrylic emulsion is 1: 1; the rest is the same as the preparation examples.
Preparation example five
The oil-resistant particles comprise the following preparation steps:
s1, performing ultraviolet irradiation on rubber powder under the irradiation of a 300W ultraviolet lamp at the temperature of 50 ℃ for 1 day to prepare a base material; mixing and stirring the base material and the silane coupling agent uniformly, and curing at room temperature for 40min to obtain a modified rubber material; wherein the mass ratio of the rubber powder to the silane coupling agent is 7.5: 1;
s2, uniformly mixing 3kg of cetearyl dimethyl silicone polymer, 0.6kg of seaweed gel and 18kg of modified rubber material, and then extruding and granulating to obtain oil-resistant particles with particle size of less than 0.8 mm.
Preparation example of microswelling Stone
Preparation example 1
The micro-expanded stone comprises the following preparation steps:
step a, adding 40kg of palygorskite with 5-10mm continuous gradation into 2.5kg of citric acid with the mass fraction of 4%, and reacting for 40min at 30 ℃, wherein the mass ratio of the palygorskite to the citric acid is 16: 1;
and step b, uniformly stirring the palygorskite prepared in the step a, 0.5kg of polymethylsilsesquioxane and 1kg of potassium lactate, heating to 80 ℃, and keeping the temperature for 10min to prepare the micro-expanded stone.
Preparation example 2
The micro-expanded stone comprises the following preparation steps:
step a, adding 60kg of palygorskite with 5-10mm continuous gradation into 6kg of citric acid with the mass fraction of 8%, and reacting for 25min at 45 ℃, wherein the mass ratio of the palygorskite to the citric acid is 10: 1;
and step b, uniformly stirring the palygorskite prepared in the step a, 2kg of polymethylsilsesquioxane and 2kg of potassium lactate, heating to 60 ℃, and keeping the temperature for 20min to prepare the micro-expanded stone.
Preparation example 3
The micro-expanded stone comprises the following preparation steps:
step a, adding 45kg of palygorskite with 5-10mm continuous gradation into 3kg of citric acid with the mass fraction of 8%, and reacting for 25min at 40 ℃, wherein the mass ratio of the palygorskite to the citric acid is 15: 1;
and step b, uniformly stirring the palygorskite prepared in the step a, 1.2kg of polymethylsilsesquioxane and 1.4kg of potassium lactate, heating to 60 ℃, and keeping the temperature for 20min to prepare the micro-expanded stone.
Preparation example 4
The micro-expanded stone comprises the following preparation steps:
step a, adding 45kg of palygorskite with 5-10mm continuous gradation into 9kg of citric acid with the mass fraction of 8%, uniformly mixing and stirring, standing for 25min, wherein the mass ratio of the palygorskite to the citric acid is 5: 1;
and step b, uniformly stirring the palygorskite prepared in the step a, 1.2kg of polymethylsilsesquioxane and 1.4kg of potassium lactate, heating to 60 ℃, and keeping the temperature for 20min to prepare the micro-expanded stone.
Preparation example 5
The slightly expanded stone is prepared by the following preparation steps: 45kg of palygorskite with 5-10mm continuous gradation, 1.2kg of polymethylsilsesquioxane and 1.4kg of potassium lactate are uniformly stirred to prepare the micro-expanded stone.
Preparation example 6
The micro-expanded stone comprises the following preparation steps:
step a, adding 45kg of palygorskite with 5-10mm continuous gradation into 3kg of citric acid with the mass fraction of 8%, and reacting for 25min at 40 ℃, wherein the mass ratio of the palygorskite to the citric acid is 15: 1;
and step b, uniformly stirring the palygorskite prepared in the step a and 1.4kg of potassium lactate, heating to 60 ℃, and keeping the temperature for 20min to prepare the micro-expanded stone.
Examples
Example 1
The preparation method of the high-strength non-shrinkage grouting material for the subway engineering comprises the following preparation steps: 100kg of cement, 40kg of water, 5kg of calcium silicate, 7kg of fly ash floating beads, 3kg of silica fume, 180kg of quartz sand, 1kg of polycarboxylic acid water reducing agent, 14kg of micro-expanded stone prepared in preparation example I and 10kg of oil-resistant particles prepared in preparation example 1 are stirred and mixed uniformly to prepare grouting material; the quartz sand comprises the following raw materials in percentage by mass: 12% of 10-20 mesh quartz sand, 15% of 20-40 mesh quartz sand, 4% of 70-140 mesh quartz sand and the balance of 40-70 mesh quartz sand.
Example 2
The preparation method of the high-strength non-shrinkage grouting material for the subway engineering comprises the following preparation steps: 160kg of cement, 60kg of water, 10kg of calcium silicate, 10kg of fly ash floating beads, 10kg of silica fume, 250kg of quartz sand, 6kg of polycarboxylic acid water reducing agent, 26kg of micro-expanded stone prepared in preparation example I and 22kg of oil-resistant particles prepared in preparation example 1 are stirred and mixed uniformly to prepare grouting material; the quartz sand comprises the following raw materials in percentage by mass: 6% of 10-20 mesh quartz sand, 8% of 20-40 mesh quartz sand, 10% of 70-140 mesh quartz sand and the balance of 40-70 mesh quartz sand.
Example 3
The preparation method of the high-strength non-shrinkage grouting material for the subway engineering comprises the following preparation steps: 160kg of cement, 60kg of water, 5kg of calcium silicate, 7kg of fly ash floating beads, 8kg of silica fume, 250kg of quartz sand, 6kg of polycarboxylic acid water reducing agent, 22kg of micro-expanded stone prepared in preparation example I and 18kg of oil-resistant particles prepared in preparation example 1 are stirred and mixed uniformly to prepare grouting material; the quartz sand comprises the following raw materials in percentage by mass: 10% of 10-20 mesh quartz sand, 9% of 20-40 mesh quartz sand, 8% of 70-140 mesh quartz sand and the balance of 40-70 mesh quartz sand.
Example 4
The difference from example 3 is that 20kg of silica fume is used as a reinforcing agent, and the rest is the same as example 3.
Example 5
The difference from the example 3 is that the oil resistant particles prepared in the second preparation example are selected, and the rest is the same as the example 3.
Example 6
The difference from the example 3 is that the oil resistant particles prepared in the third preparation example are selected, and the rest is the same as the example 3.
Example 7
The difference from example 3 is that the oil resistant particles obtained in preparation example four were selected and the rest were the same as example 3.
Example 8
The difference from the example 3 is that the oil resistant particles prepared in the fifth preparation example are selected and the rest are the same as the example 3.
Example 9
The difference from example 6 is that 3kg of the oil resistant particles obtained in preparation example three were selected and the rest were the same as example 6.
Example 10
The difference from example 6 is that the slightly expanded stone obtained in preparation example 2 was selected and the rest was the same as example 6.
Example 11
The difference from example 6 is that the slightly expanded stone obtained in preparation example 3 was selected and the rest was the same as example 6.
Example 12
The difference from example 6 is that the slightly expanded stone obtained in preparation example 4 was selected and the rest was the same as example 6.
Example 13
The difference from example 11 is that the slightly expanded stone obtained in production example 5 was selected and the rest was the same as example 11.
Example 14
The difference from example 11 is that the slightly expanded stone obtained in production example 6 was selected and the rest was the same as example 11.
Example 15
The difference from example 11 is that the particle size of the silica sand is 10 to 20 mesh, and the rest is the same as example 11.
Comparative example
Comparative example 1
The difference from example 11 is that the slightly expanded stone was replaced with the same amount of palygorskite, and the rest was the same as example 11.
Comparative example 2
The difference from example 11 is that the rubber powder was not modified, that is, the modified rubber material was replaced with the same amount of rubber powder, and the rest was the same as example 11.
Comparative example 3
The difference from example 11 is that the oil-resistant particles were replaced with the same amount of the modified rubber material, and the rest was the same as example 11.
Comparative example 4
The difference from example 11 is that the same as example 11 was conducted except that no oil-resistant pellets were added.
Performance test
The samples prepared in examples 1 to 13 and comparative examples 1 to 4 were subjected to tests of 1d, 3d and 28d compressive strength and 1d and 28d shrinkage rate according to JGJ/T70-2009 Standard test method for basic Performance of building mortar; the samples obtained in examples 1 to 13 and comparative examples 1 to 4 were subjected to an oil penetration height test by the following specific method: the test piece which is subjected to standard maintenance for 28 days is placed in No. 30 engine oil, the oil pressure is 0.8MPa, the test piece is taken out after being soaked for 30 days, the test piece is split under a pressure tester, the penetration depth of the engine oil in the test piece is measured, and the result is recorded in Table 1.
TABLE 1 test results
Figure BDA0003424124650000131
Figure BDA0003424124650000141
As can be seen from examples 1-4 in combination with Table 1, the product properties obtained by reasonably adjusting the amounts of the raw material components are not greatly different, and the compressive strength and the workability of the product can be improved by selecting calcium silicate, fly ash floating beads and silica fume as the reinforcing agent. It can be seen from examples 3 and 5-9 that the oil-resistant pellets obtained in preparation example three were selected, and the oil penetration of the product obtained in example 6 was lower and the oil resistance of the product was better. In the fourth preparation example, the mass ratio of the rubber powder to the styrene-acrylic emulsion is 1:1, and the dosage of the rubber powder and the styrene-acrylic emulsion is unbalanced; in the fifth preparation example, the rubber powder is not modified by a proper modifier at a proper temperature, so that the oil-resistant particles cannot have a good oil-resistant effect, the oil resistance of the products prepared in the examples 7 and 8 is greatly reduced, and the oil resistance of the products is poor. The oil-resistant particles used in example 9 were too small in mass, and the oil penetration height of the product obtained therefrom was increased more. Therefore, the raw material component ratio and the specific preparation method of the oil-resistant particles have great influence on the oil resistance of the product, and meanwhile, the quality of the oil-resistant particles also influences the matching effect with the slightly expanded stone, so that the shrinkage rate of the product is influenced to a certain extent.
As can be seen from example 6 and examples 10 to 14 in combination with Table 2, the use of the slightly expanded stone obtained in preparation example 3 produced the product of example 11 which was not only low in shrinkage but also excellent in strength and oil resistance; in the preparation example 4, when the palygorskite is subjected to acidification modification, the excessive citric acid is used, so that the early strength of the product is obviously reduced, and the shrinkage rate and the oil resistance of the product are also influenced to a certain extent. Preparation example 5 does not perform acidification modification on palygorskite, and the slightly expanded stone is prepared by directly and uniformly mixing the raw materials, so that the water retention property and the slightly expansion property of the slightly expanded stone are obviously poor, while preparation example 6 lacks of the polymethylsilsesquioxane, the quality of the prepared slightly expanded stone is poor, and the slightly expanded stone cannot form good compound efficacy with oil-resistant particles, so that the performances of the products prepared in example 13 and example 14 are inferior to those of example 11.
The grouting material prepared by the application has good early strength, high compressive strength in 28 days, basically negligible shrinkage rate of 3 days which is not more than 0.01 percent, low oil penetration height under the oil pressure of 0.8MPa and good oil resistance of the product.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (9)

1. The high-strength non-shrinkage grouting material for subway engineering is characterized by comprising the following raw materials in parts by weight: 100-160 parts of cement, 40-60 parts of water, 15-30 parts of reinforcing agent, 180-250 parts of quartz sand, 48-72 parts of micro-swelling stone, 10-22 parts of oil-resistant particles and 1-5 parts of polycarboxylic acid water reducer; the oil-resistant particles comprise the following raw materials in parts by weight: 2-5 parts of cetearyl polydimethylsiloxane, 0.5-1 part of seaweed gel and 12-20 parts of modified rubber material.
2. The high-strength non-shrinkage grouting material for subway engineering according to claim 1, characterized in that: the modified rubber material is prepared by the following preparation steps: irradiating rubber powder with ultraviolet at 80-90 deg.C and air relative humidity of 70-85% for 1-2 days to obtain base material; and mixing and stirring the base material and the styrene-acrylic emulsion uniformly, and maintaining for 30-45min to obtain the modified rubber material.
3. The high-strength non-shrinkage grouting material for subway engineering according to claim 2, characterized in that: the mass ratio of the rubber powder to the styrene-acrylic emulsion is (5-9) to 1.
4. The high-strength non-shrinkage grouting material for subway engineering according to claim 2 or 3, characterized in that: the curing conditions are as follows: the temperature is 70-80 ℃, and the relative humidity of air is 10-30%.
5. The high-strength non-shrinkage grouting material for subway engineering according to any one of claims 1-3, wherein: the micro-expanded stone comprises the following raw materials in parts by weight: 40-60 parts of palygorskite with 5-10mm continuous gradation, 2-4 parts of cyclodextrin, 0.5-2 parts of polymethylsilsesquioxane and 1-2 parts of potassium lactate.
6. The high-strength non-shrinkage grouting material for subway engineering according to claim 1, characterized in that: the reinforcing agent is calcium silicate, fly ash floating beads and silica fume.
7. The high-strength non-shrinkage grouting material for subway engineering according to claim 1 or 6, characterized in that: the quartz sand comprises the following raw materials in percentage by mass: 6-8% of 10-20 mesh quartz sand, 8-10% of 20-40 mesh quartz sand, 4-6% of 70-140 mesh quartz sand and the balance of 40-70 mesh quartz sand.
8. The preparation method of the high-strength non-shrinkage grouting material for the subway engineering according to any one of claims 1-7, characterized by comprising the following steps: the method comprises the following steps:
step 1, preparing oil-resistant particles: mixing cetearyl polydimethylsiloxane, seaweed gel and modified rubber material uniformly according to the proportion, and then extruding and granulating to prepare oil-resistant particles with particle size of less than 0.8 mm;
step 2, preparing the micro-expanded stone;
and 3, uniformly stirring and mixing the cement, the water, the reinforcing agent, the quartz sand, the polycarboxylic acid water reducing agent, the micro-swelling stone and the oil-resistant particles according to the proportion to obtain the grouting material.
9. The high-strength non-shrinkage grouting material for subway engineering according to claim 8, characterized in that: the micro-expanded stone comprises the following preparation steps:
step a, adding palygorskite into citric acid with the mass fraction of 4-8%, wherein the mass ratio of the palygorskite to the citric acid is (10-16):1, and reacting for 25-40min at the temperature of 30-45 ℃;
and step b, uniformly stirring the palygorskite prepared in the step a, the polymethylsilsesquioxane and the potassium lactate, heating to 60-80 ℃, and keeping the temperature for 10-20min to prepare the micro-expanded stone.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116655331A (en) * 2023-06-19 2023-08-29 南京天亚新材料有限公司 Hollow slab beam shear strengthening super-toughness intracavity filling material and application method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106007550A (en) * 2016-01-25 2016-10-12 湖南省建筑工程集团总公司 Large flow pattern non-shrinkage anti-crack concrete grouting material
CN106747128A (en) * 2017-03-10 2017-05-31 中建商品混凝土有限公司 A kind of big fluidised form High Strength Non-shrinking Filling Material and preparation method thereof
CN108947360A (en) * 2018-09-12 2018-12-07 十堰市郧阳区成林工贸有限责任公司 High Strength Non-shrinking Filling Material and preparation method thereof
CN110423076A (en) * 2019-08-16 2019-11-08 北京市高强混凝土有限责任公司 A kind of High Strength Non-shrinking Filling Material siccative
CN111574157A (en) * 2020-05-27 2020-08-25 山东科技大学 Preparation method of water-permeable and oil-resistant concrete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106007550A (en) * 2016-01-25 2016-10-12 湖南省建筑工程集团总公司 Large flow pattern non-shrinkage anti-crack concrete grouting material
CN106747128A (en) * 2017-03-10 2017-05-31 中建商品混凝土有限公司 A kind of big fluidised form High Strength Non-shrinking Filling Material and preparation method thereof
CN108947360A (en) * 2018-09-12 2018-12-07 十堰市郧阳区成林工贸有限责任公司 High Strength Non-shrinking Filling Material and preparation method thereof
CN110423076A (en) * 2019-08-16 2019-11-08 北京市高强混凝土有限责任公司 A kind of High Strength Non-shrinking Filling Material siccative
CN111574157A (en) * 2020-05-27 2020-08-25 山东科技大学 Preparation method of water-permeable and oil-resistant concrete

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116655331A (en) * 2023-06-19 2023-08-29 南京天亚新材料有限公司 Hollow slab beam shear strengthening super-toughness intracavity filling material and application method thereof
CN116655331B (en) * 2023-06-19 2023-12-19 南京天亚新材料有限公司 Hollow slab beam shear strengthening super-toughness intracavity filling material and application method thereof

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