CN113061002B - High-durability micro-expansion green prestressed duct grouting material and preparation method thereof - Google Patents
High-durability micro-expansion green prestressed duct grouting material and preparation method thereof Download PDFInfo
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- CN113061002B CN113061002B CN202110616651.3A CN202110616651A CN113061002B CN 113061002 B CN113061002 B CN 113061002B CN 202110616651 A CN202110616651 A CN 202110616651A CN 113061002 B CN113061002 B CN 113061002B
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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
- 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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- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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Abstract
The invention discloses a high-durability micro-expansion green prestressed duct grouting material and a preparation method thereof, and relates to the field of prestressed duct grouting materials, wherein the high-durability micro-expansion green prestressed duct grouting material comprises the following components in parts by weight: 40-50 parts of cement, 20-30 parts of ceramic waste residues, 18-23 parts of steel slag, 5-8 parts of microbeads, 2-5 parts of a water reducing agent, 0.1-1 part of a defoaming agent, 0-5 parts of an expanding agent and 0-0.05 part of a water retaining agent; the sum of the parts by weight of the components is 100 parts; wherein the ceramic waste slag is a mixture of ceramic tile fragments and ceramic polishing slag. By implementing the invention, the chlorine ion corrosion resistance and the durability of the prestressed duct grouting material can be effectively improved, and the production cost is effectively reduced.
Description
Technical Field
The invention relates to the field of prestressed duct grouting materials, in particular to a high-durability micro-expansion green prestressed duct grouting material and a preparation method thereof.
Background
The prestressed duct grouting material not only plays a role in connecting the prestressed tendons with the beam body concrete, but also plays a role in protecting the prestressed tendons, and the quality of the prestressed duct grouting material is not up to standard, so that the reinforcing steel bars are corroded, the prestress is lost too early, and the service life of the bridge is shortened. The traditional prestressed duct grouting material comprises 90% of cement and 10% of additives, wherein the main components of the additives comprise a water reducing agent, an expanding agent, other functional additives (such as a toughening agent, a rust inhibitor and the like) and the like. These functional aids are costly, especially as swelling agents.
On the other hand, in the production process of the ceramic tile, solid wastes such as waste bricks, polishing slag and the like are generated. In the steel-making process, steel slag is also produced, and the solid wastes cause serious land pollution and resource waste.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-durability micro-expansion green prestressed duct grouting material which has good durability.
The invention also aims to solve the technical problem of providing a preparation method of the high-durability micro-expansion green pre-stressed duct grouting material.
In order to solve the technical problem, the invention provides a high-durability micro-expansion green pre-stressed duct grouting material which comprises the following components in parts by weight: 40-50 parts of cement, 20-30 parts of ceramic waste residues, 18-23 parts of steel slag, 5-8 parts of microbeads, 2-5 parts of a water reducing agent, 0.1-1 part of a defoaming agent, 0-5 parts of an expanding agent and 0-0.05 part of a water retaining agent;
the sum of the parts by weight of the components is 100 parts;
wherein the ceramic waste slag is a mixture of ceramic tile fragments and ceramic polishing slag.
As an improvement of the technical scheme, the specific surface area of the steel slag is more than or equal to 400m2The specific surface area of the ceramic waste residue is more than or equal to 400m2/g。
As an improvement of the technical scheme, the paint comprises the following components in parts by weight: 40-50 parts of cement, 20-30 parts of ceramic waste residues, 18-23 parts of steel slag, 5-8 parts of microbeads, 2-5 parts of a water reducing agent and 0.1-1 part of a defoaming agent.
As an improvement of the technical scheme, the content of CaO in the steel slag is more than or equal to 45wt%, and SiO is contained in the steel slag2Less than or equal to 12wt%, Al2O3The content of (B) is more than or equal to 5 wt%.
As an improvement of the technical scheme, in the ceramic waste slag, the weight ratio of ceramic tile fragments to ceramic polishing slag is (1-4): 1.
as an improvement of the technical scheme, after the ceramic polishing slag is fired at 300 ℃, the mass loss rate is more than or equal to 2 wt%;
the content of CaO in the ceramic polishing slag is less than or equal to 2wt%, and SiO in the ceramic polishing slag2The content of Al is more than or equal to 60wt%, Al2O3The content of (B) is more than or equal to 20 wt%.
As an improvement of the technical scheme, the content of CaO in the ceramic tile fragments is more than or equal to 10wt%, and SiO is contained in the ceramic tile fragments2The content of (B) is more than or equal to 55 wt%.
As an improvement of the technical scheme, the average particle size of the microbeads is 5-10 microns, and the maximum particle size is less than or equal to 20 microns.
As an improvement of the technical scheme, the cement is PO42.5 cement;
the water reducing agent is one or more of polycyclic aromatic sulfonate water reducing agents, water-soluble resin sulfonate water reducing agents and aliphatic water reducing agents.
Correspondingly, the invention also discloses a preparation method of the high-durability micro-expansion green pre-stressed duct grouting material, which comprises the following steps:
(1) taking cement, ceramic waste residues, steel slag, micro-beads, a water reducing agent, a defoaming agent, an expanding agent and a water-retaining agent for later use;
specifically, the ceramic waste slag and the steel slag are crushed to ensure that the specific surface area is more than or equal to 400m2The product is ready for use after being processed by the reaction of the mixture per gram.
(2) Uniformly mixing cement, ceramic waste residues, steel slag, micro-beads, a water reducing agent, a defoaming agent, an expanding agent and a water-retaining agent according to a formula to obtain high-durability micro-expansion green prestressed duct grouting material;
wherein the formula comprises the following components in parts by weight:
40-50 parts of cement, 20-30 parts of ceramic waste residues, 18-23 parts of steel slag, 5-8 parts of microbeads, 2-5 parts of a water reducing agent, 0.1-1 part of a defoaming agent, 0-5 parts of an expanding agent and 0-0.05 part of a water retaining agent;
the sum of the parts by weight of the components is 100 parts;
wherein the ceramic waste slag is a mixture of ceramic tile fragments and ceramic polishing slag.
The implementation of the invention has the following beneficial effects:
1. according to the invention, the ceramic waste slag is introduced into the formula of the prestressed duct grouting material, and is a mixture of ceramic tile fragments and ceramic polishing slag, so that the durability of the prestressed duct grouting material can be effectively improved. In addition, the steel slag is introduced into the formula and is matched with the ceramic waste slag, so that the use amount of cement can be effectively reduced, and the production cost is reduced.
2. The steel slag with specific chemical components, omega (CaO) is more than or equal to 35wt percent, and omega (SiO) is selected2）≤12wt%，ω（Al2O3) Not less than 5wt%, has good expansion performance, and can replace the expanding agent in the prestressed duct grouting material by cooperating with the ceramic waste residue, thereby reducing the production cost.
3. The invention selects the ceramic polishing slag with specific chemical components (omega (CaO) is less than or equal to 2wt percent, omega (SiO)2）≥60wt%，ω（Al2O3) Not less than 20wt%, omega (LOI-300 ℃) not less than 2wt%, which can improve the water retention function of the prestressed duct grouting material, further replace the water retention agent and reduce the production cost.
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 further detail with reference to specific embodiments.
The invention provides a high-durability micro-expansion green prestressed duct grouting material which comprises the following components in parts by weight: 40-50 parts of cement, 20-30 parts of ceramic waste residues, 18-23 parts of steel slag, 5-8 parts of microbeads, 2-5 parts of a water reducing agent, 0.1-1 part of a defoaming agent, 0-5 parts of an expanding agent and 0-0.05 part of a water retaining agent; the sum of the parts by weight of the components is 100 parts.
Wherein, the cement can bond each component in the prestressed duct grouting material and form strength. In the present invention, the cement is portland cement, and specifically, PO42.5 cement and PO52.5 cement can be selected, but not limited thereto. Specifically, the amount of the cement is 40 to 50 parts, and is illustratively 41 parts, 43 parts, 45 parts, 48 parts, or 49 parts, but is not limited thereto.
The ceramic waste slag is solid waste generated in a ceramic brickyard and comprises ceramic tile fragments and ceramic polishing slag. The ceramic tile fragments refer to the ceramic tile fragments after firing, and the ceramic polishing slag refers to waste residues generated during polishing and after firing of the polished tiles. The ceramic waste residue has certain volcanic ash activity and can react with other components in the prestressed duct grouting material to form calcium silicate gel and ettringite, so that the mechanical property and the durability of the prestressed duct grouting material are improved. In addition, the particle form of the ceramic waste slag can be mutually embedded and extruded with cement, steel slag and the like, thereby being beneficial to improving the strength. Preferably, the specific surface area of the ceramic waste residue is more than or equal to 400m2(ii) in terms of/g. The ceramic waste residue particles can be filled in the cement particles, so that the components are more uniformly distributed, the compactness of the structure is improved, and the strength of the prestressed duct grouting material is improved.
Preferably, the content of CaO in the ceramic tile fragments is more than or equal to 10wt%, and SiO is2The content of the CaO is more than or equal to 55wt%, and the CaO content of the ceramic tile fragments is high, so that the generation amount of calcium silicate and ettringite can be increased. In addition, the broken ceramic tiles are generally waste residues generated after biscuit firing of the ceramic tiles (ceramic tiles, the water absorption rate is more than or equal to 10%), and particles generated in the crushing process of the waste residues can be better matched with cement and steel slag, so that the strength is improved.
Preferably, the content of CaO in the ceramic polishing slag is less than or equal to 2wt%, and SiO is2The content of Al is more than or equal to 60wt%, Al2O3The content of the (B) is more than or equal to 20wt%, and after being burned at 300 ℃, the mass loss rate is more than or equal to 2% and less than or equal to 8wt% (after being burned at 300 ℃ until the mass is unchanged). The ceramic polishing slag contains more grinding tool resin, and can improve the water retention performance of the prestressed duct grouting material, so that no separate water retention agent is added into the prestressed duct grouting material, and the production cost is reduced. This is achieved byBesides, most of the ceramic polishing slag containing the chemical components is a product in the production process of ceramic bricks (such as full-polished glaze, polished bricks and the like), and Al of the ceramic polishing slag2O3The content is high, and the calcium aluminate cement can cooperate with steel slag and cement to improve the content of ettringite after the prestressed duct grouting material is solidified and improve the strength.
Preferably, the weight ratio of the ceramic tile fragments to the ceramic polishing slag in the invention is (1-4): 1, exemplary are 2:1, 2.5: 1 or 3:1, but not limited thereto, preferably (1-2): 1.
Specifically, in the formula of the prestressed duct grouting material of the present invention, the amount of the ceramic waste is 20 to 30 parts, illustratively 21 parts, 24 parts, 25 parts, 27 parts or 29 parts, but is not limited thereto.
Wherein, the steel slag is waste slag generated in the steel-making industry, contains free calcium oxide, can react with cement and ceramic waste slag, and improves the strength. Meanwhile, the steel slag is mainly in an amorphous phase, particles generated after crushing are sharp, and the steel slag can form an embedded and extruded structure with ceramic waste slag, cement and the like, so that the strength is improved. Specifically, in the invention, the specific surface area of the steel slag is more than or equal to 400m2The steel slag can be effectively filled among cement particles, and the dispersibility of the components and the internal compactness of the prestressed duct grouting material are improved, so that the strength of the prestressed duct grouting material can be improved.
Preferably, the content of CaO in the steel slag is more than or equal to 45wt%, and SiO is2Less than or equal to 12wt%, Al2O3The content of (B) is more than or equal to 5 wt%. The steel slag can be better matched with ceramic waste slag. In addition, the CaO content is high, and the expansion effect is strong, so that the composite material can be cooperated with ceramic waste residues to replace an expanding agent in a prestressed duct grouting material formula, and the production cost is reduced.
Specifically, in the formulation of the present invention, the amount of the steel slag is 18 to 23 parts, and is illustratively 19 parts, 20 parts or 22 parts, but is not limited thereto.
The micro-beads are fly ash micro-beads, but are not limited to the fly ash micro-beads, and the fluidity of the prestressed duct grouting material can be improved. The amount of the microbeads is 5 to 8 parts, and exemplary is 5 parts, 6 parts, 7 parts or 8 parts, but not limited thereto.
The water reducing agent can reduce the water consumption, and can be one or more of polycyclic aromatic sulfonate water reducing agents, water-soluble resin sulfonate water reducing agents and aliphatic water reducing agents, but is not limited to the above. The amount of the water reducing agent is 2-5 parts, for example, 2 parts, 3 parts, 4 parts and 5 parts, but is not limited thereto.
The defoaming agent can reduce the surface tension of the prestressed duct grouting material and reduce the generation of bubbles. Specifically, the defoaming agent is a defoaming agent modified by a polysiloxane or mineral oil matrix, but is not limited to this. The defoaming agent is added in an amount of 0.1 to 1 part by weight, illustratively 0.2 part, 0.6 part, or 0.9 part, but is not limited thereto.
Wherein, the expanding agent is calcium sulphoaluminate and/or magnesium oxide, but is not limited to the above. The amount of the expanding agent is 0 to 5 parts, and illustratively 0 part, 2 parts, 3 parts, 3.5 parts or 4 parts, but is not limited thereto.
The water-retaining agent is cellulose ether, but is not limited thereto. The amount of the water retaining agent is 0 to 0.05 parts, and is exemplified by 0 part, 0.02 part or 0.03 part, but not limited thereto.
Correspondingly, the invention also discloses a preparation method of the high-durability micro-expansion green pre-stressed duct grouting material, which comprises the following steps:
(1) taking cement, ceramic waste residues, steel slag, micro-beads, a water reducing agent, a defoaming agent, an expanding agent and a water-retaining agent for later use;
(2) uniformly mixing cement, ceramic waste residues, steel slag, micro-beads, a water reducing agent, a defoaming agent, an expanding agent and a water-retaining agent according to a formula to obtain high-durability micro-expansion green prestressed duct grouting material;
specifically, the mixing process is as follows: stirring at 30 rpm/sec for 20 sec; stirring at the speed of 50 rpm/s for 280 s; and then stirring at the speed of 50 revolutions per second for 300 seconds, stirring at the slow speed of 15 revolutions per second for 120 seconds, and bagging.
Preferably, the method further comprises the following steps:
(3) and adding water into the prestressed duct grouting material according to the water-to-glue ratio of 0.28 for mixing.
The invention is illustrated below in specific examples:
example 1
The embodiment provides a high-durability micro-expansion green prestressed duct grouting material, which comprises the following components in percentage by weight:
42 parts of PO42.5 cement, 24 parts of ceramic waste residue, 20 parts of steel slag, 6.5 parts of microbeads, 3 parts of polycarboxylic acid water reducing agent, 0.5 part of polyether modified siloxane defoaming agent, 3.95 parts of MgO expanding agent and 0.05 part of water-retaining agent;
wherein the specific surface area of the ceramic waste residue is 420m2(ii)/g; ceramic tile fragments in the ceramic waste residues: ceramic polishing slag =4: 1; in the ceramic tile fragment, SiO262wt% of CaO, 1.5wt% of Al2O3The content was 22.4 wt%; in the ceramic polishing slag, SiO265.4wt% of CaO, 2.2wt% of Al2O3The content was 20.5wt%, and the loss on ignition at 300 ℃ was 1.2 wt%.
Wherein the specific surface area of the steel slag is 450m2G, SiO of229.7wt%, CaO 38.5wt%, Al2O3The content is 16.5 wt%;
wherein the average particle diameter of the microbeads is 5.5. mu.m.
The preparation method comprises the following steps: mixing the raw materials, and mixing completely. When in testing, the materials are mixed according to the water-to-glue ratio of 0.28 for testing.
Example 2
The embodiment provides a high-durability micro-expansion green prestressed duct grouting material, which comprises the following components in percentage by weight:
40 parts of PO42.5 cement, 20 parts of broken ceramic tile, 10 parts of ceramic polishing slag, 18 parts of steel slag, 8 parts of microbeads, 3 parts of polycarboxylic acid water reducing agent and 1 part of polyether modified polysiloxane defoaming agent.
Wherein the specific surface area of the ceramic waste residue is 450m2(ii)/g; in the ceramic tile fragment, SiO256.8wt% of CaO, 11.9wt% of Al2O3The content is 12.5 wt%; in the ceramic polishing slag, SiO266.8wt% of CaO, 0.9wt% of Al2O3The content was 21.7wt%, and the loss on ignition at 300 ℃ was 2.9 wt%.
Wherein the specific surface area of the steel slag is 450m2G, SiO of229wt% of CaO, 49.9wt% of CaO, Al2O3The content was 11.7 wt%.
Wherein the average particle diameter of the microbeads is 8 μm.
The preparation method comprises the following steps: mixing the raw materials, and mixing completely. When in testing, the materials are mixed according to the water-to-glue ratio of 0.28 for testing.
Example 3
The embodiment provides a high-durability micro-expansion green prestressed duct grouting material, which comprises the following components in percentage by weight:
40 parts of PO42.5 cement, 18 parts of ceramic tile fragments, 12 parts of ceramic polishing slag, 18 parts of steel slag, 8 parts of microbeads, 3 parts of polycarboxylic acid water reducing agent and 1 part of polyether modified polysiloxane defoaming agent.
Wherein the specific surface area of the ceramic waste residue is 450m2(ii)/g; in the ceramic tile fragment, SiO256.8wt% of CaO, 11.9wt% of Al2O3The content is 12.5 wt%; in the ceramic polishing slag, SiO266.8wt% of CaO, 0.9wt% of Al2O3The content was 21.7wt%, and the loss on ignition at 300 ℃ was 2.9 wt%.
Wherein the specific surface area of the steel slag is 450m2G, SiO of229wt% of CaO, 49.9wt% of Al2O3The content was 11.7 wt%.
Wherein the average particle diameter of the microbeads is 8 μm.
The preparation method comprises the following steps: mixing the raw materials, and mixing completely. When in testing, the materials are mixed according to the water-to-glue ratio of 0.28 for testing.
Example 4
The embodiment provides a high-durability micro-expansion green prestressed duct grouting material, which comprises the following components in percentage by weight:
50 parts of PO42.5 cement, 15 parts of ceramic tile fragments, 5 parts of ceramic polishing slag, 18 parts of steel slag, 7 parts of microbeads, 4 parts of polycarboxylic acid water reducing agent and 1 part of polyether modified polysiloxane defoaming agent.
Wherein the specific surface area of the ceramic waste residue is 420m2(ii)/g; in the ceramic tile fragment, SiO258.4wt% of CaO, 14.5wt% of Al2O3The content was 9.4 wt%; pottery clayIn the porcelain polishing slag, SiO265.5wt% of CaO, 1.2wt% of Al2O3The content was 20.9wt%, and the loss on ignition at 300 ℃ was 2.5 wt%.
Wherein the specific surface area of the steel slag is 450m2G, SiO of231wt% of CaO, 40.7wt% of Al2O3The content was 14.8 wt%.
Wherein the average particle diameter of the microbeads is 8 μm.
The preparation method comprises the following steps: mixing the raw materials, and mixing completely. When in testing, the materials are mixed according to the water-to-glue ratio of 0.28 for testing.
Example 5
The embodiment provides a high-durability micro-expansion green prestressed duct grouting material, which comprises the following components in percentage by weight:
45 parts of PO42.5 cement, 20 parts of ceramic tile fragments, 5 parts of ceramic polishing slag, 18 parts of steel slag, 7 parts of microbeads, 4 parts of polycarboxylic acid water reducing agent and 1 part of polyether modified polysiloxane defoaming agent.
Wherein the specific surface area of the ceramic waste residue is 420m2(ii)/g; in the ceramic tile fragment, SiO258.4wt% of CaO, 14.5wt% of Al2O3The content was 9.4 wt%; in the ceramic polishing slag, SiO265.5wt% of CaO, 1.2wt% of Al2O3The content was 20.9wt%, and the loss on ignition at 300 ℃ was 2.5 wt%.
Wherein the specific surface area of the steel slag is 450m2G, SiO of231wt% of CaO, 40.7wt% of Al2O3The content was 14.8 wt%.
Wherein the average particle diameter of the microbeads is 8 μm.
The preparation method comprises the following steps: mixing the raw materials, and mixing completely. When in testing, the materials are mixed according to the water-to-glue ratio of 0.28 for testing.
Example 6
The embodiment provides a high-durability micro-expansion green prestressed duct grouting material, which comprises the following components in percentage by weight:
40 parts of PO42.5 cement, 15 parts of ceramic tile fragments, 10 parts of ceramic polishing slag, 23 parts of steel slag, 7 parts of microbeads, 4 parts of polycarboxylic acid water reducing agent and 1 part of polyether modified polysiloxane defoaming agent.
Wherein the specific surface area of the ceramic waste residue is 420m2(ii)/g; in the ceramic tile fragment, SiO258.4wt% of CaO, 14.5wt% of Al2O3The content was 9.4 wt%; in the ceramic polishing slag, SiO265.5wt% of CaO, 1.2wt% of Al2O3The content was 20.9wt%, and the loss on ignition at 300 ℃ was 2.5 wt%.
Wherein the specific surface area of the steel slag is 450m2G, SiO of231wt% of CaO, 40.7wt% of Al2O3The content was 14.8 wt%.
Wherein the average particle diameter of the microbeads is 8 μm.
The preparation method comprises the following steps: mixing the raw materials, and mixing completely. When in testing, the materials are mixed according to the water-to-glue ratio of 0.28 for testing.
Example 7
The present embodiment provides a prestressed duct grouting material, which is different from embodiment 1 in that:
the formulation does not contain an expanding agent and the steel slag used is the same as in example 6.
Example 8
This example provides a prestressed duct grouting material, which is different from example 1 in that,
the formulation does not contain an expanding agent and the ceramic waste residue used is the same as in example 2.
The prestressed duct grouting materials in the embodiments 1 to 8 are detected by methods of JTG/T F50 and GB/T17671, and the specific results are shown in the following table:
as can be seen from the table, the performance parameters of the high-durability micro-expansion green prestressed duct grouting material in the embodiment meet the performance index requirements of technical Specification for construction of bridges and culverts of highways (JTG/T3650-.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (6)
1. The high-durability micro-expansion green prestressed duct grouting material is characterized by comprising the following components in parts by weight: 40-50 parts of cement, 20-30 parts of ceramic waste residues, 18-23 parts of steel slag, 5-8 parts of microbeads, 2-5 parts of a water reducing agent and 0.1-1 part of a defoaming agent;
the sum of the parts by weight of the components is 100 parts;
wherein the ceramic waste slag is a mixture of ceramic tile fragments and ceramic polishing slag; the content of CaO in the ceramic tile fragments is more than or equal to 10wt%, and SiO is2The content of (A) is more than or equal to 55 wt%; after the ceramic polishing slag is fired at 300 ℃, the mass loss rate is not less than 2wt% and not more than 8wt%, the content of CaO in the ceramic polishing slag is not more than 2wt%, and SiO in the ceramic polishing slag is not more than2The content of Al is more than or equal to 60wt%, Al2O3The content of (A) is more than or equal to 20 wt%;
the content of CaO in the steel slag is more than or equal to 45wt%, and SiO is2Less than or equal to 12wt%, Al2O3The content of (B) is more than or equal to 5 wt%.
2. The high-durability micro-expanded green prestressed duct grouting material as claimed in claim 1, wherein the specific surface area of said steel slag is 400m or more2The specific surface area of the ceramic waste residue is more than or equal to 400m2/g。
3. The high-durability micro-expansion green prestressed duct grouting material as claimed in claim 1, wherein the weight ratio of the ceramic tile fragments to the ceramic polishing slag in the ceramic waste slag is (1-4): 1.
4. the highly durable micro-expanded green prestressed duct grouting material as claimed in claim 1, wherein the average particle size of said micro beads is 5 to 10 μm and the maximum particle size is 20 μm or less.
5. The high durability micro-expanded green prestressed duct grouting material as claimed in claim 1, wherein said cement is PO42.5 cement;
the water reducing agent is one or more of polycyclic aromatic sulfonate water reducing agents, water-soluble resin sulfonate water reducing agents and aliphatic water reducing agents.
6. The method for preparing the high-durability micro-expansion green pre-stressed duct grouting material as claimed in any one of claims 1 to 5, comprising:
(1) taking cement, ceramic waste residues, steel slag, micro-beads, a water reducing agent and a defoaming agent for later use;
(2) uniformly mixing cement, ceramic waste residues, steel slag, micro-beads, a water reducing agent and a defoaming agent according to a formula to obtain high-durability micro-expansion green prestressed duct grouting material;
wherein the formula consists of the following components in parts by weight: 40-50 parts of cement, 20-30 parts of ceramic waste residues, 18-23 parts of steel slag, 5-8 parts of microbeads, 2-5 parts of a water reducing agent and 0.1-1 part of a defoaming agent;
the sum of the parts by weight of the components is 100 parts;
wherein the ceramic waste slag is a mixture of ceramic tile fragments and ceramic polishing slag; the content of CaO in the ceramic tile fragments is more than or equal to 10wt%, and SiO is2The content of (A) is more than or equal to 55 wt%; after the ceramic polishing slag is fired at 300 ℃, the mass loss rate is not less than 2wt% and not more than 8wt%, the content of CaO in the ceramic polishing slag is not more than 2wt%, and SiO in the ceramic polishing slag is not more than2The content of Al is more than or equal to 60wt%, Al2O3The content of (A) is more than or equal to 20 wt%;
the content of CaO in the steel slag is more than or equal to 45wt%, and SiO is2Less than or equal to 12wt%, Al2O3The content of (B) is more than or equal to 5 wt%.
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| CN104529337A (en) * | 2015-01-12 | 2015-04-22 | 杭州绿怡新型建材有限公司 | Post-tensioned prestressed concrete beam duct grouting material of highway bridge and preparation method thereof |
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| GB686729A (en) * | 1951-02-13 | 1953-01-28 | Selleck Nicholls & Company Ltd | Improvements in or relating to wall structures |
| CN104529337A (en) * | 2015-01-12 | 2015-04-22 | 杭州绿怡新型建材有限公司 | Post-tensioned prestressed concrete beam duct grouting material of highway bridge and preparation method thereof |
| CN106946521A (en) * | 2017-03-07 | 2017-07-14 | 贵阳绿洲苑建材有限公司 | A kind of novel pre-stressed hole path pressure grouting material and preparation method thereof |
| CN111505044A (en) * | 2020-03-16 | 2020-08-07 | 佛山市至道科技实业有限公司 | Detection method for cement stability of ceramic polishing slag and application thereof |
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