CN113831092B - Repairing and leaking stoppage material and preparation method thereof - Google Patents
Repairing and leaking stoppage material and preparation method thereof Download PDFInfo
- Publication number
- CN113831092B CN113831092B CN202111021104.7A CN202111021104A CN113831092B CN 113831092 B CN113831092 B CN 113831092B CN 202111021104 A CN202111021104 A CN 202111021104A CN 113831092 B CN113831092 B CN 113831092B
- Authority
- CN
- China
- Prior art keywords
- repairing
- composite
- agent
- leaking stoppage
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C04B28/06—Aluminous 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides a repairing and leaking stoppage material and a preparation method thereof, wherein the repairing and leaking stoppage material comprises the following components in parts by weight: 65-80% of composite gelled material, 10-25% of enhanced composite mineral admixture, 5-12% of composite expansion component, 0.2-1.0% of rheological agent, 0.5-1.2% of water reducing agent, 0.05-0.1% of defoaming agent, 0.08-0.12% of anti-permeability water repellent agent, 0.4-1.0% of coagulant and 2-6% of activity enhancing component. The repairing and leaking stoppage material prepared by the invention is specially used for repairing and leaking stoppage of seepage and the like caused by structural concrete cracks and lifting of a seepage line of hydraulic engineering, has the characteristics of high filling degree, micro-expansion, high seepage prevention, high early strength, high durability and the like, can realize quick repairing and leaking stoppage, and is suitable for popularization and application.
Description
Technical Field
The invention relates to the technical field of building engineering materials, in particular to a repairing and leaking stoppage material and a preparation method thereof.
Background
The concrete material of the hydraulic engineering is easy to have the problems of temperature difference cracks, humidity gradient cracks and the like, and when the crack width reaches a certain limit value, the leakage problem of the concrete structure of the hydraulic engineering can occur; in addition, the infiltration line during hydraulic engineering design is higher than the infiltration line of actual water storage, however, in a flood season, the water storage level of hydraulic engineering is raised, so that the elevation of the infiltration line in the flood season may be higher than that of the designed infiltration line, the permeability coefficient of a dam body is raised, and further the dam body leakage phenomenon occurs, and therefore, the safety and the service life of the structure are seriously threatened by the leakage phenomenon caused by the structural crack and the elevation of the infiltration line of the hydraulic engineering.
The grouting repair technology is the most widely applied technology for preventing and treating cracks and leakage in hydraulic engineering, and the main process is to fill grout in cracks or gaps by means of pressure so as to achieve the purpose of blocking seepage channels and preventing leakage. The present commonly used repairing material is mostly prepared by using cement, sand, fly ash, slag powder and the like with common fineness as main raw materials and adding a certain amount of additive, because the repairing material contains the sand and other powder materials are not refined, the specific surface area of the common cement is generally 350-450m 2 In the/kg range, the granules are larger, and the prepared slurry is coarserCoarse, difficult to penetrate into the depths of micro cracks below millimeter level, and unable to ensure the impermeability of the whole structure, thereby causing the micro cracks in the structure to be not effectively filled and unable to achieve the purpose of good impermeable and leaking stoppage. In addition, because of the special watery environment in which the hydraulic engineering repair plugging is positioned, the existing repair material cannot be quickly condensed and hardened under the condition of water saturation, the strength is slowly developed, the water flow impact cannot be resisted, and the aim of good leakage prevention cannot be achieved.
Therefore, it is very necessary to develop a novel high-early-strength rapid repair plugging material special for hydraulic engineering for repairing and plugging cracks and defects of a hydraulic engineering structure.
Disclosure of Invention
In view of the above, the invention provides a repairing lost circulation material and a preparation method thereof, which are used for solving the problems of slow hardening, slow strength development and poor seepage-proofing and leak-stopping performance of the existing lost circulation material.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the repairing leaking stoppage material comprises the following components in parts by weight: 65-80% of composite gelled material, 10-25% of enhanced composite mineral admixture, 5-12% of composite expansion component, 0.2-1.0% of rheological agent, 0.5-1.2% of water reducing agent, 0.05-0.1% of defoaming agent, 0.08-0.12% of anti-permeability water repellent agent, 0.4-1.0% of coagulant and 2-6% of activity enhancing component.
Optionally, the composite cementitious material comprises sulphoaluminate cement and ordinary portland cement;
the reinforced composite mineral admixture comprises tuff, metakaolin and talc;
the composite intumescent component comprises calcined magnesia and azodicarbonamide;
the rheological agent comprises hydrated magnesium aluminum silicate and hydrogenated castor oil thixotrope;
the water reducing agent comprises a polycarboxylic acid high-efficiency water reducing agent;
the defoamer comprises a polysiloxane polyether defoamer;
the impervious water repellent comprises an organosilane water repellent;
the set accelerator comprises lithium carbonate, aluminum sulfate and calcium formate;
the reinforcing component comprises silica.
Optionally, the weight ratio of the sulphoaluminate cement to the Portland cement is in the range 7.
Optionally, the specific surface area of the composite cementing material is more than 850m 2 /kg。
Optionally, the weight ratio of tuff, metakaolin and talc is in the range of 5.
Optionally, the number of particles with a particle size of less than 5 μm in the enhanced composite mineral is greater than 90%.
Optionally, the weight ratio of the calcined magnesium oxide to the azodicarbonamide is in the range of 40.
Optionally, the reinforcing component has an average particle size of less than or equal to 60nm.
The invention also aims to provide a preparation method of the repairing lost circulation material, which comprises the following steps:
s1, uniformly mixing a reinforced composite mineral admixture, a composite expansion component, a rheological agent, a water reducing agent, a defoaming agent, an anti-permeability water repellent, a coagulation accelerator and an activity reinforcing component to prepare a premix;
and S2, adding the composite cementing material into the premix, and uniformly stirring to obtain the repairing and leaking stoppage material.
Optionally, the method further comprises the steps of: stirring the repairing and leaking stoppage material and mixing water into slurry, and performing repairing and leaking stoppage construction; wherein the water-to-material ratio of the mixing water to the repair lost circulation material is in the range of 0.28 to 0.34.
Compared with the prior art, the repair plugging material and the preparation method thereof provided by the invention have the following advantages:
the repairing leaking stoppage material provided by the invention has excellent overall performance: the slurry has high fluidity, the machine-out fluidity tested by a truncated cone method is more than 250mm, the slurry is stable, and the phenomena of bleeding, segregation, layering and bottom scraping do not exist; the setting time is not shorter than 30min, so that the slurry is ensured to be well filled in gaps and defective parts, but the setting time is not longer than 50min, so that quick setting and leakage stoppage are ensured; the high-strength concrete has excellent early and later strength, the 2h compressive strength reaches more than 20MPa, the 28d compressive strength reaches more than 80MPa, and the flexural strength reaches more than 10 MPa; the good micro-expansibility and the high bonding strength ensure that the water conservancy project structure and the repaired part form the same whole, the good structural consistency is achieved, the water conservancy project structure has good impermeability and durability under the conditions of high water pressure and water flow impact, and the safety and the service life of the water conservancy project structure are improved.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments thereof are described in detail below.
It should be noted that in the description of the embodiments herein, the description of the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Throughout this specification, the schematic representations of the terms used above do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The term "in.. Range" as used herein includes both ends, such as "in the range of 1 to 100" including both ends of 1 and 100.
The embodiment of the invention provides a material for repairing and leaking stoppage, which comprises the following components in parts by weight: 65-80% of composite cementing material, 10-25% of enhanced composite mineral admixture, 5-12% of composite expansion component, 0.2-1.0% of rheological agent, 0.5-1.2% of water reducing agent, 0.05-0.1% of defoaming agent, 0.08-0.12% of anti-permeability water repellent, 0.4-1.0% of coagulant and 2-6% of activity enhancing component.
The invention adopts the sulphoaluminate cement and the ordinary portland cement to be compounded as the cementing material, provides good early strength chemical performance, simultaneously enables the later strength to be fully developed, and carries out superfine treatment on the cementing material, so that slurry can fully permeate into micro cracks, ensures the filling degree and achieves the purpose of filling all cracks. And the function of the coagulant is assisted, so that the slurry can be coagulated and hardened at the right moment to resist water flow impact, and the aim of good joint filling and leakage stopping is fulfilled.
Further, the weight ratio of the sulphoaluminate cement to the ordinary portland cement is in the range of 7 to 9 2 /kg。
The reinforced composite mineral admixture comprises tuff, metakaolin and talc, and the ultra-fine natural pozzolanic admixture and the metakaolin obtained by calcining the kaolin are compounded to be used as the admixture, so that the morphological effect, the micro-aggregate effect and the chemical activity effect of the admixture are fully exerted, the hydration degree of the cementing material is promoted, and the strength of the repairing material is further improved; and the talcum powder is used as an auxiliary agent, so that the lubricating effect of the slurry is provided, the water loss of the high-fluidity slurry is prevented when the high-fluidity slurry enters the cracks, the fluidity of the slurry is kept all the time, and the ultrafine cementing material is further ensured to well penetrate into the depths of the micro cracks to form a stable whole with an engineering structure.
Further, the weight ratio of tuff, metakaolin and talc is 5.
The invention adopts the composite expanding agent to ensure that the slurry has micro-expansion performance in a flowing state and after hardening, ensures good filling degree, and combines the action of the rheological agent to ensure that the obtained slurry has good volume stability before and after hardening, and does not shrink, delaminate, bleed or segregate.
Specifically, the rheological agent comprises hydrated aluminum-magnesium silicate and hydrogenated castor oil thixotrope, the water reducing agent comprises a polycarboxylic high-efficiency water reducing agent, the defoaming agent comprises a polysiloxane polyether type defoaming agent, the anti-permeability water repellent comprises an organosilane water repellent, and the coagulant comprises lithium carbonate, aluminum sulfate and calcium formate; the reinforcing component comprises silica.
The defoaming agent is adopted to eliminate micro bubbles in the slurry, so that the compactness is enhanced, and the effect of the anti-permeability water repellent is supplemented, so that the anti-permeability is greatly improved. Amorphous nano-silica is used as an activity enhancing component and filled in partial micropores, so that the strength of each age is further improved, the nano-effect is utilized, the micro-nano pore structure of the system is improved, and the impermeability and the durability are improved.
Preferably, the rheological agent has a weight ratio of calcined magnesium oxide to azodicarbonamide in the range of 40.
Preferably, the reinforcing component is amorphous silica having an average particle size of less than or equal to 60nm.
Therefore, the repairing and leaking stoppage material provided by the invention has high fluidity, is stable, and has no phenomena of bleeding, segregation, layering and bottom scraping; the setting time is not shorter than 30min, so that the slurry is ensured to be well filled in gaps and defective parts, but the setting time is not longer than 50min, so that quick setting and leakage stoppage are ensured; excellent early and late strength; the good micro-expansibility and the high bonding strength ensure that the water conservancy project structure and the repaired part form the same whole, the good structural consistency is achieved, the water conservancy project structure has good impermeability and durability under the conditions of high water pressure and water flow impact, and the safety and the service life of the water conservancy project structure are improved.
The invention also aims to provide a preparation method of the repairing lost circulation material, which comprises the following steps:
s1, uniformly mixing a reinforced composite mineral admixture, a composite expansion component, a rheological agent, a water reducing agent, a defoaming agent, an anti-permeability water repellent, a coagulation accelerator and an activity reinforcing component to prepare a premix;
and S2, adding the composite cementing material into the premix, and uniformly stirring to obtain the repairing and leaking stoppage material.
Further comprising the steps of: stirring the repairing and leaking stoppage material and mixing water into slurry, and performing repairing and leaking stoppage construction; wherein the water-to-material ratio of the mixing water to the repair plugging material is in the range of 0.28 to 0.34.
The repairing and leaking stoppage material prepared by the invention is specially used for repairing and leaking stoppage of leakage and the like caused by structural concrete cracks and lifting of a seepage line in hydraulic engineering, has the characteristics of high filling degree, micro-expansion, high seepage prevention, early strength, high durability and the like, can realize quick repairing and leaking stoppage, and is suitable for popularization and application.
On the basis of the above embodiments, the present invention provides the following specific examples of the preparation method of the repairing lost circulation material, and further illustrates the present invention. The water reducing agent is a polycarboxylic acid high-efficiency water reducing agent of RHEOPLUS 420 type of Pasteur (China) Limited, the defoaming agent is a P803 type defoaming agent of the Pasteur (China) Limited, the impervious water repellent is a SEAL80 type organic silane water repellent of Acksotuer Special chemistry (Shanghai) Limited, the coagulant is formed by mixing lithium carbonate, aluminum sulfate and calcium formate according to any proportion, and the activity enhancing component is amorphous silicon dioxide with the average particle size of not more than 60nm.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The following examples are examples of experimental procedures not specified under specific conditions, generally according to the conditions recommended by the manufacturer. Unless otherwise indicated, percentages and parts are by mass.
Example 1
The embodiment provides a preparation method of a repairing and leaking stoppage material, which comprises the following steps:
1) Weighing the raw materials according to the proportion, wherein the raw materials and the dosage thereof comprise: 65kg of composite cementing material (56.875 kg of sulphoaluminate cement and 8.125kg of ordinary portland cement), 24.155kg of enhanced composite mineral admixture (12.0775 kg of tuff, 9.662kg of metakaolin and 2.4155kg of talc), 5.5kg of composite expansion component (5.375 kg of calcined magnesia and 0.125kg of azodicarbonamide), 0.25kg of rheological agent (0.05 kg of hydrated aluminum magnesium silicate and 0.2kg of hydrogenated castor oil thixotrope), 0.55kg of water reducing agent, 0.06kg of antifoaming agent, 0.085kg of impervious water repellent, 0.4kg of coagulant (0.1 kg of lithium carbonate, 0.15kg of aluminum sulfate and 0.15kg of calcium formate) and 4kg of activity enhancing component;
2) Respectively putting the weighed enhanced composite mineral admixture, the composite expansion component, the rheological agent, the water reducing agent, the defoaming agent, the anti-permeability water repellent, the coagulation accelerator and the activity enhancing component into a stirrer to be uniformly mixed, and then putting the superfine composite cementing material into the stirrer to be continuously stirred and uniformly mixed to obtain the repairing and leaking stoppage material. When in use, 34kg of water is added into the obtained repairing and leaking stoppage material, and a forced mechanical stirrer is adopted to stir into uniform flowing slurry, so that the repairing and leaking stoppage construction can be carried out.
Example 2
The embodiment provides a preparation method of a repairing lost circulation material, which is different from the embodiment 1 in that:
in the step 1), the raw materials and the dosage thereof comprise: 68kg of composite cementing material (61.2 kg of sulphoaluminate cement, 6.8kg of ordinary portland cement), 21.25kg of enhanced composite mineral admixture (10.625 kg of tuff, 6.375kg of metakaolin and 4.25kg of talc), 7.0kg of composite expansion component (6.86 kg of calcined magnesia and 0.14kg of azodicarbonamide), 0.36kg of rheological agent (0.12 kg of hydrated aluminum magnesium silicate and 0.24kg of hydrogenated castor oil thixotrope), 0.64kg of water reducing agent, 0.07kg of antifoaming agent, 0.08kg of water repellent, 0.6kg of coagulant (0.3 kg of lithium carbonate, 0.2kg of aluminum sulfate and 0.1kg of calcium formate) and 2kg of activity enhancing component;
in the step 2), adding 33kg of water into the repairing and plugging material;
the other steps were the same as those involved in example 1.
Example 3
The embodiment provides a preparation method of a repairing lost circulation material, which is different from the embodiment 1 in that:
in the step 1), the raw materials and the dosage thereof comprise: 72kg of composite cementing material (64 kg of sulphoaluminate cement, 8.0kg of ordinary portland cement), 14.36kg of enhanced composite mineral admixture (8.616 kg of tuff, 4.308kg of metakaolin and 1.436kg of talc), 8.4kg of composite expansion component (8.2 kg of calcined magnesia, 0.2kg of azodicarbonamide), 0.55kg of rheological agent (0.25 kg of hydrated magnesium aluminum silicate and 0.2kg of hydrogenated castor oil thixotrope), 0.8kg of water reducing agent, 0.09kg of antifoaming agent, 0.1kg of anti-seepage water repellent agent, 0.7kg of coagulant (0.1 kg of lithium carbonate, 0.2kg of aluminum sulfate and 0.4kg of calcium formate) and 3kg of activity enhancing component;
in the step 2), 31kg of water is added into the repairing and leaking stoppage material;
the other steps were the same as those involved in example 1.
Example 4
The embodiment provides a preparation method of a repairing lost circulation material, which is different from the embodiment 1 in that:
in the step 1), the raw materials and the dosage thereof comprise: 78kg of composite cementing material (70.0 kg of sulphoaluminate cement, 8.0kg of ordinary portland cement), 11.61kg of enhanced composite mineral admixture (6.966 kg of tuff, 2.322kg of metakaolin and 2.322kg of talc), 5kg of composite expansion component (4.9 kg of calcined magnesia, 0.1kg of azodicarbonamide), 0.8kg of rheological agent (0.15 kg of hydrated aluminum magnesium silicate and 0.65kg of hydrogenated castor oil thixotrope), 1.0kg of water reducing agent, 0.08kg of antifoaming agent, 0.11kg of anti-permeability water repellent agent, 0.9kg of coagulant (0.3 kg of lithium carbonate, 0.3kg of aluminum sulfate and 0.3kg of calcium formate) and 2.5kg of activity enhancing component;
in the step 2), 29kg of water is added into the repairing and plugging material;
the other steps were the same as those involved in example 1.
Example 5
This example provides a preparation method of a repair plugging material, which is different from example 1 in that:
in the step 1), the raw materials and the dosage thereof comprise: 66kg of composite cementing material (58.0 kg of sulphoaluminate cement and 8.0kg of ordinary portland cement), 13.58kg of enhanced composite mineral admixture (6.79 kg of tuff, 5.432kg of metakaolin and 1.358kg of talc), 11kg of composite expansion component (10.8 kg of calcined magnesium oxide and 0.2kg of azodicarbonamide), 1.0kg of rheological agent (0.6 kg of hydrated magnesium aluminum silicate and 0.4kg of hydrogenated castor oil thixotrope), 1.2kg of water reducing agent, 0.1kg of antifoaming agent, 0.12kg of anti-permeability hydrophobic agent, 1.0kg of coagulant (0.2 kg of lithium carbonate, 0.3kg of aluminum sulfate and 0.5kg of calcium formate) and 6kg of activity enhancing component;
in the step 2), 28kg of water is added into the repairing and plugging material;
the other steps were the same as those involved in example 1.
Comparative example 1
78kg of cementing material 42.5 grade ordinary portland cement, 15.1kg of II grade fly ash, 0.9kg of coagulant (sodium sulfate), 5.0kg of UEA expanding agent and 1.0kg of water reducing agent, and the raw materials are uniformly mixed and stirred according to the mass ratio of water to grouting material 0.29.
Comparative example 2
78kg of cementing material 42.5 grade ordinary portland cement, 15.1kg of enhanced composite mineral admixture (7.55 kg of tuff, 6.04kg of metakaolin and 1.51kg of talc), 5kg of composite expansion component (calcined magnesia 4.9kg and azodicarbonamide 0.1 kg), 0.9kg of coagulant (sodium sulfate) and 1.0kg of water reducing agent, and the raw materials are uniformly mixed and uniformly stirred according to the mass ratio of water to grouting material 0.29.
Comparative example 3
78kg of superfine composite cementing material (70.0 kg of sulphoaluminate cement, 8.0kg of ordinary portland cement), 15.1kg of enhanced composite mineral admixture (7.55 kg of tuff, 6.04kg of metakaolin and 1.51kg of talc), 5kg of composite expansion component (4.9 kg of calcined magnesia, 0.1kg of azodicarbonamide), 0.9kg of coagulant (0.3 kg of lithium carbonate, 0.3kg of aluminum sulfate and 0.3kg of calcium formate) and 1.0kg of water reducer, wherein the raw materials are uniformly mixed and uniformly stirred according to the mass ratio of water to grouting material of 0.29.
The repairing lost circulation materials obtained in examples 1 to 5 and comparative examples 1 to 3 were respectively tested for fluidity, slurry stability, expansibility, mechanical properties, and impermeability, and the results are shown in table 1.
TABLE 1 results of testing the performance of the repairing lost circulation materials obtained in examples 1-5 and comparative examples 1-3
As can be seen from table 1: in the embodiment 1-5 of the invention, the composite gelled material subjected to superfine treatment by the jet mill is combined with functional components such as the enhanced composite mineral admixture, the anti-permeability water repellent, the activity enhancing component and the like, so that the early and later mechanical properties and the anti-permeability performance are far higher than those of the comparative example 1-3; comparative example 1 adopts a system of ordinary portland cement and fly ash, and adds basic additives, and each performance index obtained is poor; the comparative example 2 adds the enhanced composite mineral admixture and the composite expansion component, so that the mechanical property and the expansion rate are improved to a certain extent; comparative example 3 the ultra-fine composite cementitious material was prepared based on comparative example 2 by using the coagulant of the present invention, which resulted in improved slurry stability, early and late strength, and impermeability, but lacked the combined effect of the additives of the present invention, such as rheological agent, impervious water repellent, and activity enhancing component, and all performance indexes thereof were lower than those of the examples of the present invention.
In conclusion, the high early strength rapid repair plugging material special for hydraulic engineering obtained in the embodiment of the invention has better fluidity, slurry stability, expansibility, mechanical property, impermeability and the like than those of common repair plugging materials.
Although the present disclosure has been described with reference to the above embodiments, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.
Claims (8)
1. The repairing and leaking stoppage material is characterized by comprising the following components in parts by weight: 65-80% of composite gelled material, 10-25% of enhanced composite mineral admixture, 5-12% of composite expansion component, 0.2-1.0% of rheological agent, 0.5-1.2% of water reducing agent, 0.05-0.1% of defoaming agent, 0.08-0.12% of anti-permeability water repellent agent, 0.4-1.0% of coagulant, and 2-6% of activity enhancing component, wherein the composite gelled material comprises sulphoaluminate cement and ordinary silicate cement; the reinforced composite mineral admixture comprises tuff, metakaolin and talc; the composite expansion component comprises calcined magnesium oxide and azodicarbonamide; the rheological agent comprises hydrated magnesium aluminum silicate and hydrogenated castor oil thixotrope; the water reducing agent comprises a polycarboxylic acid high-efficiency water reducing agent; the defoamer comprises a polysiloxane polyether defoamer; the impervious water repellent comprises an organosilane water repellent; the set accelerator comprises lithium carbonate, aluminum sulfate and calcium formate; the activity enhancing component comprises silica, wherein the weight ratio of the sulphoaluminate cement to the Portland cement is in the range of 7 to 9.
2. The repair lost circulation material of claim 1, wherein the specific surface area of the composite cement is greater than 850m 2 /kg。
3. The repair lost circulation material of claim 2, wherein the weight ratio of tuff, metakaolin and talc is in the range of 5.
4. The repair lost circulation material of claim 3, wherein the number of particles having a particle size of less than 5 μm in the reinforced composite mineral is greater than 90%.
5. The repair lost circulation material of claim 4, wherein the weight ratio of the calcined magnesia to the azodicarbonamide is in the range of 40.
6. The repair lost circulation material of claim 2, wherein the average particle size of the activity enhancing component is less than or equal to 60nm.
7. A method for preparing a repairing lost circulation material according to any one of claims 1 to 6, which comprises the following steps:
s1, uniformly mixing a reinforced composite mineral admixture, a composite expansion component, a rheological agent, a water reducing agent, a defoaming agent, an anti-permeability water repellent, a coagulation accelerator and an activity reinforcing component to prepare a premix;
and S2, adding the composite cementing material into the premix, and uniformly stirring to obtain the repairing and leaking stoppage material.
8. The method for preparing a repair lost circulation material according to claim 7, further comprising the steps of: stirring the repairing and leaking stoppage material and mixing water into slurry for repairing and leaking stoppage construction; wherein the water-to-material ratio of the mixing water to the repair lost circulation material is in the range of 0.28 to 0.34.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111021104.7A CN113831092B (en) | 2021-09-01 | 2021-09-01 | Repairing and leaking stoppage material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111021104.7A CN113831092B (en) | 2021-09-01 | 2021-09-01 | Repairing and leaking stoppage material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113831092A CN113831092A (en) | 2021-12-24 |
| CN113831092B true CN113831092B (en) | 2022-11-25 |
Family
ID=78961878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111021104.7A Active CN113831092B (en) | 2021-09-01 | 2021-09-01 | Repairing and leaking stoppage material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113831092B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115246730B (en) * | 2021-12-29 | 2023-06-23 | 山东建筑大学 | Water-based epoxy resin and microorganism modified superfine cement-based self-repairing waterproof plugging material |
| CN114702286B (en) * | 2022-03-14 | 2022-10-21 | 河北匠工新型建筑材料有限公司 | Powdery micro-cement and preparation method thereof |
| CN114644490B (en) * | 2022-03-22 | 2023-04-11 | 南京兴佑交通科技有限公司 | Grouting material for road reinforcement and repair |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100941646B1 (en) * | 2009-08-31 | 2010-02-11 | (주)우암건설 | Concrete structure repair components |
| CN101844907B (en) * | 2010-05-07 | 2013-06-12 | 武汉理工大学 | Self-expansion type high-flow regime quick-hardening early-strength repairing grouting material |
| CN104926242A (en) * | 2015-05-29 | 2015-09-23 | 湖北中桥科技有限公司 | Concrete crack repair grouting material and preparation method thereof |
| CN109020419B (en) * | 2018-08-20 | 2020-10-09 | 湖北大学 | Tunnel inverted arch superfine inorganic grouting material and preparation method thereof |
| CN109456016A (en) * | 2019-01-12 | 2019-03-12 | 上海伟星新材料科技有限公司 | A kind of anti-seeping grouting material |
-
2021
- 2021-09-01 CN CN202111021104.7A patent/CN113831092B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113831092A (en) | 2021-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113831092B (en) | Repairing and leaking stoppage material and preparation method thereof | |
| CN102503310B (en) | Super-high early-strength grouting material for repairing ballastless track structure of high speed railway | |
| CN109678430B (en) | High-strength impervious self-compacting concrete for pipe gallery box culvert and preparation method thereof | |
| CN107686300A (en) | Microdilatancy grout material is used in a kind of tunnel-liner filling | |
| CN106220126B (en) | A kind of grouting material of foundation stabilization | |
| CN103979901B (en) | A kind of cement based shrinking-free grouting material and using method being mixed with phosphorus slag powder | |
| CN110627445B (en) | High-impermeability cement-based repair material for tunnel engineering and preparation method thereof | |
| CN104261749A (en) | Cement based material with strong expanding performance and applications thereof | |
| CN112174617A (en) | Sleeve grouting material for connecting reinforcing steel bars and preparation method and application thereof | |
| KR101793650B1 (en) | Injection composition for grout | |
| CN102924021B (en) | Composite cement-based quick-setting dry material and mortar for maintaining ballastless tracks and method for preparing same | |
| CN112960958B (en) | Sealing slurry for winter assembly type construction and preparation method thereof | |
| CN111018455A (en) | Low-temperature type reinforcing steel bar connecting sleeve grouting material and preparation method thereof | |
| CN103342530A (en) | Cement-based self-leveling mortar | |
| CN107840622A (en) | A kind of highway grouting material and its production method | |
| CN114213094A (en) | Regenerated ceramic powder geopolymer repair mortar and preparation method thereof | |
| CN110483000B (en) | Interface agent for repairing masonry structure and preparation method and application thereof | |
| CN107935504A (en) | Early strengthening and high strengthening, microdilatancy, the bar connecting sleeve grouting material of since conservation function | |
| CN108395126B (en) | Anti-seepage leak-stopping material and application thereof in hydraulic engineering | |
| CN109250987A (en) | A kind of tunnel band is molded into pulp material | |
| CN107082614A (en) | A kind of sleeve grouting dry powder composite of bar connecting and preparation method thereof | |
| CN111689747B (en) | 3D printed color decoration mortar | |
| CN108911568B (en) | Grouting material additive and application thereof | |
| CN113831090B (en) | Large-flow-state anti-seepage impact-resistant grinding hydraulic concrete and preparation method thereof | |
| CN116514483A (en) | Self-compacting high-toughness semi-flexible pavement grouting material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |