CN110255995B - Pre-alkalization inorganic mineral polymer-based rapid repair mortar and preparation method thereof - Google Patents
Pre-alkalization inorganic mineral polymer-based rapid repair mortar and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building 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
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
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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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
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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
A pre-alkalization inorganic mineral polymer-based rapid repair mortar and a preparation method thereof belong to the field of building materials. The pre-alkalization inorganic mineral polymer-based rapid repair mortar comprises the following raw material components in parts by weight: 28-55 parts of pre-alkali liquor, 80-100 parts of slag, 1-8 parts of coagulant, 10-25 parts of flow-increasing fly ash, 130 parts of sand 110-sand and 15-22 parts of water. The pre-alkali solution comprises the following materials in parts by weight: 13-36 parts of silicon-aluminum material and 15-20 parts of alkali excitation liquid. The preparation method comprises the following steps: firstly preparing alkali excitation liquid, then mixing the alkali excitation liquid with a silicon-aluminum material heated by microwave to carry out pre-alkalization reaction to obtain pre-alkali liquid, then adding other raw materials, and stirring to obtain the catalyst. The pre-alkalization inorganic mineral polymer-based rapid repair mortar can adjust the setting time according to the repair requirement, can also improve the strength of the pre-alkalization inorganic mineral polymer-based rapid repair mortar, and is widely applied to rapid repair of roads.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a rapid repair mortar, and specifically relates to a pre-alkalization inorganic mineral polymer-based rapid repair mortar and a preparation method thereof.
Background
The existing repair mortar mainly comprises two types, wherein one type is cement-based repair mortar; one is high molecular polymer base repair mortar. Cement-based repair mortar: the reaction rate of the ordinary portland cement in the initial hydration stage is slow, the cementing property between the ordinary portland cement and the old pavement is poor, the strength can reach 28d only by maintenance after pouring, and the maintenance process is long, so that the construction and the road opening are not facilitated. High molecular polymer base repair mortar: such repair materials are expensive, greatly limit the repair area, and use of a large amount of polymer reduces the durability of the repair material and is prone to peeling.
The inorganic mineral polymer has the advantages of good mechanical property, high temperature resistance and good corrosion resistance, does not need heating in the preparation process, has wide material sources, mainly comprises various silicon-aluminum minerals and industrial solid waste residues, and is an environment-friendly material. Although the traditional inorganic mineral polymer-based rapid repair mortar has high early strength and rapid development of later strength, the problem of too early setting time is also solved, the construction difficulty caused by too early setting time in long-distance repair and road repair with more cracks is solved, and the use and popularization of the inorganic mineral polymer-based rapid repair mortar are limited to a great extent.
Disclosure of Invention
The invention aims to solve the problem of too early setting time of inorganic mineral polymer-based rapid repair mortar during repair and improve the strength of the inorganic mineral polymer-based rapid repair mortar, and provides pre-alkalized inorganic mineral polymer-based rapid repair mortar and a preparation method thereof. The method is widely applied to rapid repair of roads.
The invention relates to pre-alkalization inorganic mineral polymer-based rapid repair mortar, which comprises the following raw materials: pre-alkali liquor, slag, coagulant, fly ash for increasing fluidity, sand and water;
wherein the mass parts of the components are as follows: 28-55 parts of pre-alkali liquor, 80-100 parts of slag, 1-8 parts of coagulant, 10-25 parts of flow-increasing fly ash, 130 parts of sand and 15-22 parts of water.
Wherein the pre-alkali solution comprises a silicon-aluminum material and an alkali excitation solution; wherein the mass parts of the materials are as follows: 13-36 parts of silicon-aluminum material and 15-20 parts of alkali excitation liquid;
the silicon-aluminum material comprises the following components in parts by weight: 10-30 parts of fly ash and 3-6 parts of silica fume are used as adjusting components.
In the fly ash for adjusting the components, the mass of the fly ash with the particle size of less than or equal to 0.045mm accounts for more than or equal to 75 percent of the mass of the total fly ash.
The apparent density of the silica fume is 2-4 g/cm3。
The alkali-excited liquid comprises the following components in parts by weight: 12-14 parts of water glass and 3-6 parts of sodium hydroxide.
The slag is S95 grade slag.
The coagulant is a saturated aqueous solution of calcium hydroxide and/or a saturated aqueous solution of sodium sulfate; according to the mass portion, 1-6 portions of calcium hydroxide saturated aqueous solution and 1-2 portions of sodium sulfate saturated aqueous solution; wherein, the mass concentration of calcium hydroxide in the saturated aqueous solution of calcium hydroxide is 0.04%, and the mass concentration of sodium sulfate in the saturated aqueous solution of sodium sulfate is 2%.
In the flow-increasing fly ash, the mass of the fly ash with the particle size of less than or equal to 0.045mm accounts for more than or equal to 75 percent of the total mass of the fly ash.
The setting time of the pre-alkalization inorganic mineral polymer-based rapid repair mortar is 10-30min, and the 1d compressive strength is 30-45 MPa.
Setting time t when the pre-alkalization inorganic mineral polymer base rapid repair mortar1Is t1Less than 10min, the pre-alkalization inorganic mineral polymer-based rapid repair mortar comprises the following raw materials in parts by weight: pre-alkali liquor: 30-46 parts of slag: 80-100 parts of coagulant: 5-8 parts of flow-increasing fly ash: 10-15 parts of sand: 110-130 parts of water: 18-22 parts.
Setting time t when the pre-alkalization inorganic mineral polymer base rapid repair mortar2T is less than or equal to 10min2Less than 20min, the pre-alkalization inorganic mineral polymer-based rapid repair mortar comprises the following raw materials in parts by weight: pre-alkali liquor: 28-44 parts of slag: 80-90 parts of coagulant: 2-4 parts of flow-increasing fly ash: 15-20 parts of sand: 110-130 parts of water: 18-22 parts.
Setting time t when the pre-alkalization inorganic mineral polymer base rapid repair mortar3T is less than or equal to 20min2Less than or equal to 30min, the pre-alkalization inorganic mineral polymer base rapid repair mortar comprises the following raw materials in parts by weight: pre-alkali liquor: 34-55 parts of slag: 80-100 parts of coagulant: 1-2 parts of flow-increasing fly ash: 20-25 parts of sand: 110-: 15-20 parts.
The invention relates to a preparation method of pre-alkalized inorganic mineral polymer-based rapid repair mortar, which comprises the following steps:
(1) weighing sodium hydroxide and water glass according to a formula of a raw material alkali excitation liquid of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, and mixing to obtain an alkali excitation liquid; in the alkali excitation liquid, the modulus of the water glass is 1.3-1.4;
(2) weighing fly ash and silica fume for adjusting components according to a formula of a raw material, namely a silica-alumina material, of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, uniformly dispersing and mixing, heating to 45-55 ℃ by adopting microwaves after sealing, mixing with an alkali excitation liquid, stirring until the pre-alkalization reaction of the alkali excitation liquid and the silica-alumina material is complete, and finally standing and settling for more than 6 hours to obtain a pre-alkali solution;
(3) according to the raw material formula of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, slag, the fly ash for increasing flow and sand are weighed, mixed and stirred uniformly, then mixed uniformly with pre-alkali liquor, stirred continuously, added with a coagulant and water along with stirring, and stirred to obtain the uniform pre-alkalized inorganic mineral polymer-based rapid repair mortar.
In the step (2), the dispersion is preferably carried out by using an elevating dispersion machine with the rotation speed of 1200-2000r/min, and the dispersion time is preferably 1-5 min.
In the step (2), the microwave heating is performed at a frequency of 2000-2500MHz, preferably 2450 MHz.
In the step (2), the stirring is carried out until the pre-alkalization reaction of the alkali excitation liquid and the silicon-aluminum material is complete, the stirring is carried out at a variable speed, the stirring is carried out for 1-2min at the speed of 130-150r/min, and then the stirring is carried out for 2-3min at the speed of 280-300r/min until the alkali excitation liquid and the silicon-aluminum material are completely reacted.
In the step (2), the precipitation is: standing and precipitating for more than 6h in a curing room with the temperature of 20 +/-2 ℃.
In the step (2), pre-alkalization reaction is carried out for 3-5 min.
The use method of the pre-alkalization inorganic mineral polymer-based rapid repair mortar is to apply the pre-alkalization inorganic mineral polymer-based rapid repair mortar to a concrete repair part and maintain for 2-3 h.
The invention discloses a pre-alkalization inorganic mineral polymer-based rapid repair mortar and a preparation method thereof, and the principle is as follows: the special pre-alkali liquid for the inorganic mineral polymer is prepared by pre-alkalizing the inorganic silicon-aluminum material, the silica fume in the pre-alkali liquid and the fly ash for adjusting components are pre-reacted under the action of the alkali exciting liquid, so that the early hydration degree of the fly ash for adjusting components is controlled, the water absorption performance of the silica fume after pre-alkalization is greatly reduced, the strength of the repair mortar is improved, and the water consumption for mixing the mortar is reduced, so that the quick setting time and performance of the adjustment mortar are realized.
The invention discloses a pre-alkalization inorganic mineral polymer-based rapid repair mortar and a preparation method thereof, and the preparation method has the following beneficial effects:
1. the method has the advantages of simple operation, wide raw material source, stable construction operability, good repairing effect and good cementing property between new and old concrete interfaces; the strength is developed rapidly and high, and the opening requirement can be met rapidly; the setting time can be adjusted to meet the construction requirements, and the workability is ensured for a long time.
2. After the inorganic mineral polymer-based rapid repair mortar is subjected to pre-alkalization treatment, the overall mechanical property and the working property are improved to a great extent, the problem of poor durability caused by shrinkage, cracking and peeling can be effectively solved, in roads with different repair requirements, the condensation time of the inorganic mineral polymer-based rapid repair mortar can be controlled according to the road repair requirements on the basis of high early strength by adjusting the components of the pre-alkali liquor, and the inorganic mineral polymer-based rapid repair mortar has the advantages of strong repair operability, quick opening time after repair, high strength development speed, high early strength and the like, can be widely applied to rapid repair of walls and road pavements and the like, and is a new development direction of repair materials.
Detailed Description
The present invention will be further described in detail with reference to the following examples for better illustrating the present invention, and the scope of the present invention is not limited to the following examples.
In the following examples, the calcium hydroxide saturated aqueous solution used had a mass concentration of 0.04%, and the sodium sulfate saturated aqueous solution used had a mass concentration of 2%.
Example 1
A pre-alkalization inorganic mineral polymer base rapid repair mortar adopts the raw materials comprising: pre-alkali liquid, slag, coagulant, fly ash for increasing fluidity, sand and water. Wherein the weight parts of the raw materials are as follows: 39 parts of pre-alkali liquor (wherein the pre-alkali liquor comprises 18 parts of fly ash for adjusting components and 5 parts of silica fume, 4 parts of sodium hydroxide and 12 parts of water glass in alkali excitation liquid contained in the pre-alkali liquor), 95 parts of slag, 4 parts of saturated calcium hydroxide aqueous solution, 1 part of saturated sodium sulfate aqueous solution, 15 parts of fly ash for increasing flow, 120 parts of sand and 18 parts of water.
A preparation method of pre-alkalization inorganic mineral polymer-based rapid repair mortar comprises the following steps:
(1) weighing sodium hydroxide and water glass according to the formula of the alkali-excited liquid and the proportion, and mixing to obtain the alkali-excited liquid; in the alkali excitation liquid, the modulus of the water glass is 1.3-1.4;
(2) weighing and adjusting the components by using fly ash and silica fume according to the formula of the silicon-aluminum material, dispersing by using a lifting dispersion machine with the rotation speed of 1200-2000r/min, uniformly mixing after dispersing for 3min, heating to 50 ℃ by using microwave with the microwave frequency of 2450MHz after sealing, mixing with alkali excitation liquid, stirring for 1min at 140r/min, stirring for 2min at 285r/min until the alkali excitation liquid and the silicon-aluminum material are completely subjected to pre-alkalization reaction, and finally standing and precipitating for 6h in a curing chamber with the temperature of 20 +/-2 ℃ to obtain pre-alkali liquid;
(3) according to the raw material formula of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, slag, the fly ash for increasing flow and sand are weighed, mixed and stirred uniformly, then mixed uniformly with the pre-alkali liquor, stirred continuously, the coagulant and the water are added along with stirring, and the uniform pre-alkalized inorganic mineral polymer-based rapid repair mortar is obtained by stirring.
(4) The method comprises the steps of loading the pre-alkalized inorganic mineral polymer-based rapid repair mortar into a cement mortar triple test mould (40 multiplied by 160mm), vibrating, treating the surface by using a scraper, demolding, putting into a curing chamber, curing for 4 hours, and performing performance test (the test is performed twice, the first test is performed after the curing for 4 hours, and the second test is performed after 1 d), wherein the test results are shown in table 1.
Example 2
A pre-alkalization inorganic mineral polymer base rapid repair mortar adopts the raw materials comprising: pre-alkali liquid, slag, coagulant, fly ash for increasing fluidity, sand and water. Wherein the raw materials in parts by weight are as follows: 37 parts of pre-alkali liquor (wherein the pre-alkali liquor comprises 18 parts of fly ash for adjusting components and 4 parts of silica fume; 4 parts of sodium hydroxide and 11 parts of water glass in alkali excitation liquid contained in the pre-alkali liquor), 85 parts of slag, 3 parts of saturated aqueous solution of calcium hydroxide, 18 parts of fly ash for increasing flow, 120 parts of sand and 20 parts of water.
A preparation method of pre-alkalization inorganic mineral polymer-based rapid repair mortar, which is the same as the preparation method of the embodiment 1, and is characterized in that the formula adopts the raw material proportion of the embodiment.
The setting time of the pre-alkalized inorganic mineral polymer-based rapid repair mortar prepared in this example was 18 min.
Example 3
A pre-alkalization inorganic mineral polymer base rapid repair mortar adopts the raw materials comprising: pre-alkali liquid, slag, coagulant, fly ash for increasing fluidity, sand and water. Wherein the raw materials in parts by weight are as follows: 41 parts of pre-alkali liquor (wherein the pre-alkali liquor comprises 22 parts of fly ash for adjusting components and 3 parts of silica fume, 4 parts of sodium hydroxide and 12 parts of water glass in alkali excitation liquid contained in the pre-alkali liquor), 80 parts of slag, 2 parts of saturated aqueous solution of calcium hydroxide, 25 parts of fly ash for increasing flow, 120 parts of sand and 18 parts of water.
A preparation method of pre-alkalization inorganic mineral polymer-based rapid repair mortar, which is the same as the preparation method of the embodiment 1, and is characterized in that the formula adopts the raw material proportion of the embodiment.
The setting time of the pre-alkalized inorganic mineral polymer-based rapid repair mortar prepared in this example was 27 min.
Comparative example
The inorganic mineral polymer-based repair mortar comprises alkali excitation liquid, slag, flow-increasing fly ash, sand and water, wherein the mass parts of the raw materials are as follows: 80 parts of slag, 25 parts of fly ash for increasing flow, 4 parts of sodium hydroxide in alkali excitation liquid, 12 parts of water glass in the alkali excitation liquid, 120 parts of sand and 20 parts of water.
A preparation method of inorganic mineral polymer-based repair mortar comprises the following steps:
(1) weighing sodium hydroxide and water glass according to the formula of the alkali-excited liquid and the proportion, and mixing to obtain the alkali-excited liquid; in the alkali excitation liquid, the modulus of the water glass is 1.3-1.4;
(2) according to the raw material formula of the inorganic mineral polymer-based repair mortar, slag, the fly ash for increasing flow and sand are weighed, mixed and stirred uniformly, then mixed uniformly with the alkali excitation liquid, stirred continuously, added with water along with stirring, and stirred to obtain the uniform inorganic mineral polymer-based repair mortar.
(3) The inorganic mineral polymer base repair mortar is put into a cement mortar triple test mould (40 multiplied by 160mm), vibrated, finally the surface is treated by a scraper, after demoulding, the inorganic mineral polymer base repair mortar is put into a curing chamber for curing for 2.5 hours for performance test, and the test results are shown in table 1.
TABLE 1 Performance index results for repair mortars prepared in the respective examples and comparative examples
As can be seen from the comparison of the data in Table 1, in the comparative example and the example 3, the setting time (initial setting time) of the inorganic geopolymer-based repair mortar subjected to the pre-alkalization treatment is increased from 8min to 27min, the setting time is prolonged, the construction requirements of the project can be met, the strength is higher than that of the inorganic geopolymer-based repair mortar not subjected to the pre-alkalization treatment, and the 1d compressive strength is increased from 22.4MPa to 31.9 MPa. The invention proves that the invention can play a role in reducing the setting time and improving the compressive strength and the flexural strength.
Claims (9)
1. The pre-alkalization inorganic mineral polymer-based rapid repair mortar is characterized by comprising the following raw materials: pre-alkali liquor, slag, coagulant, fly ash for increasing fluidity, sand and water;
wherein the mass parts of the components are as follows: 28-55 parts of pre-alkali liquor, 80-100 parts of slag, 1-8 parts of coagulant, 10-25 parts of flow-increasing fly ash, 130 parts of sand and 15-22 parts of water;
the pre-alkali solution comprises a silicon-aluminum material and an alkali excitation solution; wherein the mass parts of the materials are as follows: 13-36 parts of silicon-aluminum material and 15-20 parts of alkali excitation liquid;
the silicon-aluminum material comprises the following components in parts by weight: 10-30 parts of fly ash and 3-6 parts of silica fume are used as adjusting components;
in the fly ash for adjusting the components, the mass of the fly ash with the particle size of less than or equal to 0.045mm accounts for more than or equal to 75 percent of the mass of the total fly ash;
the apparent density of the silica fume is 2-4 g/cm3；
The coagulant is a saturated aqueous solution of calcium hydroxide and/or a saturated aqueous solution of sodium sulfate; according to the mass portion, 1-6 portions of calcium hydroxide saturated aqueous solution and 1-2 portions of sodium sulfate saturated aqueous solution;
the pre-alkalization inorganic mineral polymer-based rapid repair mortar is prepared by the following steps:
(1) weighing sodium hydroxide and water glass according to a formula of a raw material alkali excitation liquid of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, and mixing to obtain an alkali excitation liquid; in the alkali excitation liquid, the modulus of the water glass is 1.3-1.4;
(2) weighing fly ash and silica fume for adjusting components according to a formula of a raw material, namely a silica-alumina material, of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, uniformly dispersing and mixing, heating to 45-55 ℃ by adopting microwaves after sealing, mixing with an alkali excitation liquid, stirring until the pre-alkalization reaction of the alkali excitation liquid and the silica-alumina material is complete, and finally standing and settling for more than 6 hours to obtain a pre-alkali solution;
(3) according to the raw material formula of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, slag, the fly ash for increasing flow and sand are weighed, mixed and stirred uniformly, then mixed uniformly with pre-alkali liquor, stirred continuously, added with a coagulant and water along with stirring, and stirred to obtain the uniform pre-alkalized inorganic mineral polymer-based rapid repair mortar.
2. The pre-alkalization inorganic mineral polymer-based rapid repair mortar according to claim 1, wherein the alkali-excitation liquid comprises the following components in parts by weight: 12-14 parts of water glass and 3-6 parts of sodium hydroxide.
3. The pre-alkalized inorganic geopolymer-based rapid repair mortar according to claim 1, wherein the slag is S95 grade slag;
in the flow-increasing fly ash, the mass of the fly ash with the particle size of less than or equal to 0.045mm accounts for more than or equal to 75 percent of the total mass of the fly ash.
4. The pre-alkalized inorganic mineral polymer-based rapid repair mortar according to claim 1, wherein the calcium hydroxide is present in a saturated aqueous solution of calcium hydroxide at a mass concentration of 0.04%, and the sodium sulfate is present in a saturated aqueous solution of sodium sulfate at a mass concentration of 2%.
5. The pre-alkalized inorganic geopolymer-based rapid repair mortar according to claim 1, wherein the setting time of the pre-alkalized inorganic geopolymer-based rapid repair mortar is 10-30min, and the 1d compressive strength is 30-45 MPa.
6. The pre-alkalized inorganic geopolymer-based rapid repair mortar according to claim 1, wherein the setting time t when pre-alkalizing the inorganic geopolymer-based rapid repair mortar is reached1Is t1Less than 10min, the pre-alkalization inorganic mineral polymer-based rapid repair mortar comprises the following raw materials in parts by weight: pre-alkali liquor: 30-46 parts of slag: 80-100 parts of coagulant: 5-8 parts of flow-increasing fly ash: 10-15 parts of sand: 110-130 parts of water: 18-22 parts;
setting time t when the pre-alkalization inorganic mineral polymer base rapid repair mortar2T is less than or equal to 10min2Less than 20min, the pre-alkalization inorganic mineral polymer-based rapid repair mortar comprises the following raw materials in parts by weight: pre-alkali liquor: 28-44 parts of slag: 80-90 parts of coagulant: 2-4 parts of flow-increasing fly ash: 15-20 parts of sand: 110-130 parts of water: 18-22 parts;
setting time t when the pre-alkalization inorganic mineral polymer base rapid repair mortar3T is less than or equal to 20min2Less than or equal to 30min, the pre-alkalization inorganic mineral polymer base rapid repair mortar comprises the following raw materials in parts by weight: pre-alkali liquor: 34-55 parts of slag: 80-100 parts of coagulant: 1-2 parts of flow-increasing fly ash: 20-25 parts of sand: 110-130 parts of water: 15-20 parts.
7. The process for the preparation of a pre-alkalized inorganic mineral polymer-based rapid repair mortar according to any one of claims 1 to 6, characterized in that it comprises the following steps:
(1) weighing sodium hydroxide and water glass according to a formula of a raw material alkali excitation liquid of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, and mixing to obtain an alkali excitation liquid; in the alkali excitation liquid, the modulus of the water glass is 1.3-1.4;
(2) weighing fly ash and silica fume for adjusting components according to a formula of a raw material, namely a silica-alumina material, of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, uniformly dispersing and mixing, heating to 45-55 ℃ by adopting microwaves after sealing, mixing with an alkali excitation liquid, stirring until the pre-alkalization reaction of the alkali excitation liquid and the silica-alumina material is complete, and finally standing and settling for more than 6 hours to obtain a pre-alkali solution;
(3) according to the raw material formula of the pre-alkalized inorganic mineral polymer-based rapid repair mortar, slag, the fly ash for increasing flow and sand are weighed, mixed and stirred uniformly, then mixed uniformly with pre-alkali liquor, stirred continuously, added with a coagulant and water along with stirring, and stirred to obtain the uniform pre-alkalized inorganic mineral polymer-based rapid repair mortar.
8. The method for preparing pre-alkalized inorganic mineral polymer-based rapid repair mortar according to claim 7, wherein in the step (2), the dispersion is performed by using a lifting disperser with a rotation speed of 1200-2000r/min for a dispersion time of 1-5 min;
the microwave heating is carried out, and the microwave frequency is 2000-2500 MHz;
stirring until the pre-alkalization reaction of the alkali excitation liquid and the silicon-aluminum material is complete, stirring at a variable speed for 1-2min at the speed of 130-150r/min, and then stirring for 2-3min at the speed of 280-300r/min until the alkali excitation liquid and the silicon-aluminum material are completely reacted;
the precipitation is as follows: standing and precipitating for more than 6h in a curing room with the temperature of 20 +/-2 ℃.
9. The method of using the pre-alkalized inorganic geopolymer-based rapid repair mortar according to any one of claims 1 to 6, characterized in that the pre-alkalized inorganic geopolymer-based rapid repair mortar is applied to a concrete repair site and cured for 2 to 3 hours.
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| CN114436549B (en) * | 2022-03-07 | 2022-10-28 | 西安建筑科技大学 | Quick-setting high-alkali-activated fly ash cementing material capable of being cured at normal temperature and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096304A (en) * | 2006-06-30 | 2008-01-02 | 上海富春建业(集团)有限公司 | Rapid restoring material for building and road making |
| CN104446309A (en) * | 2014-11-25 | 2015-03-25 | 沈阳建筑大学 | Quick repairing material for buildings and preparation method of quick repairing material |
| CN106396597A (en) * | 2016-08-30 | 2017-02-15 | 卓达新材料科技集团威海股份有限公司 | Alkali excited fly ash repairing mortar and production method thereof |
| CN108975780A (en) * | 2018-07-27 | 2018-12-11 | 成都宏基建材股份有限公司 | A kind of geo-polymer mending mortar and its preparation and application |
| KR101931721B1 (en) * | 2017-12-04 | 2018-12-21 | 윤필용 | Method for repairing concrete structure using eco-friendly inorganic polymer |
-
2019
- 2019-07-16 CN CN201910640717.5A patent/CN110255995B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101096304A (en) * | 2006-06-30 | 2008-01-02 | 上海富春建业(集团)有限公司 | Rapid restoring material for building and road making |
| CN104446309A (en) * | 2014-11-25 | 2015-03-25 | 沈阳建筑大学 | Quick repairing material for buildings and preparation method of quick repairing material |
| CN106396597A (en) * | 2016-08-30 | 2017-02-15 | 卓达新材料科技集团威海股份有限公司 | Alkali excited fly ash repairing mortar and production method thereof |
| KR101931721B1 (en) * | 2017-12-04 | 2018-12-21 | 윤필용 | Method for repairing concrete structure using eco-friendly inorganic polymer |
| CN108975780A (en) * | 2018-07-27 | 2018-12-11 | 成都宏基建材股份有限公司 | A kind of geo-polymer mending mortar and its preparation and application |
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