CN115304320B - Mortar capable of rapidly plugging - Google Patents
Mortar capable of rapidly plugging Download PDFInfo
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- CN115304320B CN115304320B CN202210770163.2A CN202210770163A CN115304320B CN 115304320 B CN115304320 B CN 115304320B CN 202210770163 A CN202210770163 A CN 202210770163A CN 115304320 B CN115304320 B CN 115304320B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The application relates to the field of building materials, and in particular discloses quick plugging mortar which comprises the following components in parts by weight: 100 parts of water; 195.5 to 196.5 parts of Portland cement; 34.5-35.5 parts of fly ash; 3.75-3.85 parts of accelerator; 1.87-1.88 parts of expansion resin; 1135-1140 parts of machine-made sand; the powder content of the machine-made sand is 10-12%; the accelerator is a compound of aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate. The application has the advantage of improving the plugging effect.
Description
Technical Field
The application relates to the field of building materials, in particular to quick plugging mortar.
Background
In-process that tunnel excavated, can not be through the region that is rich in groundwater, can appear after the excavation, the tunnel wall appears the seepage phenomenon, can seriously influence the stability of tunnel, needs in time to leak stoppage, and the seepage department of plugging the tunnel wall through quick leaking stoppage's mortar is comparatively effectual mode.
The mortar is a material formed by mixing sand and cementing materials in a certain proportion with water, and forms a hard solid structure through hydration reaction, so that the hydration reaction speed needs to be accelerated for quick leakage stoppage, and therefore, an accelerator needs to be added, but a common accelerator has an acceleration effect, but when the speed is too high, a large amount of hydration heat is easily generated to cause cracking of concrete, so that the strength is reduced, and the leakage stoppage effect is relatively common, so that in actual construction, a layer of mortar needs to be smeared first, and if leakage occurs after solidification, a layer of mortar is touched again, and the mortar is circulated for a plurality of times until the leakage does not occur, so that the construction process is relatively inconvenient, and the improvement space is provided.
Disclosure of Invention
In order to improve the plugging effect, the application provides quick plugging mortar.
In a first aspect, the application provides a quick plugging mortar, which adopts the following technical scheme:
the mortar capable of quickly plugging comprises the following components in parts by mass:
100 parts of water;
195.5 to 196.5 parts of Portland cement;
34.5-35.5 parts of fly ash;
3.75-3.85 parts of accelerator;
1.87-1.88 parts of expansion resin;
1135-1140 parts of machine-made sand;
the powder content of the machine-made sand is 10-12%;
the accelerator is a compound of aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate.
By adopting the technical scheme, the powder content of the machine-made sand is controlled, the concrete structure prepared after the mortar is solidified is well filled, gaps are well filled, the compactness is improved, the waterproof performance is improved, and the concrete structure is formed by compounding the accelerator formed by aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate, so that the hydration speed of the mortar is higher, but the hydration heat energy is more uniformly distributed, the generation of local cracks is reduced, fine lines can be uniformly generated, and then the fine lines are quickly repaired while being generated by matching with the deformation supplement of the expansion resin and the stone powder filling in the machine-made sand, and finally the anti-seepage and plugging effects are obviously improved.
Preferably, the mass ratio of the aluminum sulfate, the methacrylic acid, the sodium fluoride, the triisopropanolamine and the aluminum magnesium silicate is 8:2:1:1:3.
by adopting the technical scheme, the quick setting effect is better and local cracking is less likely to occur by specifically selecting the proportion of aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate, and the prepared concrete has complete and compact structure, better plugging effect, quick response and better quality.
Preferably, the grain size of the machine-made sand is 2-2.5mm.
By adopting the technical scheme, the particle size of the machine-made sand is specifically selected, so that the pores among the aggregates of the prepared concrete structure are smaller, stone powder in the machine-made sand is easier to fill, a compact structure is better formed, and the anti-seepage and plugging effects are better.
Preferably, the machine-made sand is compounded from granite particles and mudstone particles.
Through adopting above-mentioned technical scheme, through adopting granite granule, provide better intensity performance, make the concrete of making have higher intensity, through cooperation mudstone granule, utilize the characteristic of mudstone granule water absorption expansion, produce volume expansion, thereby realize the repair to the fine line, and make the concrete structure of making more compact, the impervious performance is better, moreover, because the expansion of mudstone granule belongs to rigid expansion, if directly use, the easy fracture appears in the concrete structure because of excessive expansion, consequently, need the strict control quantity, but reach the expansion effect just through the control quantity and be very difficult, therefore through cooperating with the expansion resin, can make the mudstone granule quantity be in not enough state, the accessible extrudes the expansion resin after the mudstone granule is expanded, thereby obtain more closely-packed structure, but difficult appearance expansion is the phenomenon of fracture instead, realize better filling effect.
Preferably, the mass ratio of the granite particles to the mudstone particles is 10:1.
by adopting the technical scheme, the concrete prepared by specifically selecting the proportion of granite particles to mudstone particles has higher strength, better density and better anti-seepage and plugging effects.
In a second aspect, the application provides a preparation method of a quick plugging mortar, which adopts the following technical scheme:
the preparation method of the mortar for quickly plugging comprises the following steps:
step 1), uniformly mixing cement, fly ash and an accelerator to obtain a premix;
step 2), adding the machine-made sand and the expansion resin into the premix, and uniformly mixing to obtain a mixture;
and 3) injecting water into the mixture, and uniformly mixing to obtain the mortar capable of quickly plugging.
By adopting the technical scheme, the cement, the fly ash and the accelerator are mixed firstly, so that the accelerator and the cementing material are mixed uniformly, the hydration promoting effect is uniform in the hydration process, and the phenomenon of local severe hydration is not easy to occur.
By uniformly mixing cement, fly ash, accelerator, machine-made sand and expansion resin and then adding water for mixing, the mixing time after adding water is shortened, the waste of hydration reaction time in the mixing process is reduced, the phenomenon that the construction difficulty is seriously increased due to the fact that the initial setting time is too short in the construction process is reduced, the construction effect is good, and the scrapping of materials is reduced.
Preferably, in the step 2), the machine-made sand, the expansion resin and the premix are uniformly mixed by a mixing device, the mixing device comprises a bracket, the bracket is rotationally connected with a mixing barrel, the device further comprises a driving device for driving the mixing barrel to rotate, the rotation axis of the mixing barrel is vertical to the horizontal plane, a rubber layer is fixedly connected to the inner wall of the mixing barrel, and the linear speed of the outer wall of the mixing barrel is 200-250m/min when the machine-made sand, the expansion resin and the premix are mixed.
According to the technical scheme, a special mixing device is adopted, so that a large amount of stone powder is not easy to generate in the mixing process, because in the step 2), each material lacks water buffering, if the traditional stirring kettle is adopted for stirring, the stirring blades can generate direct rigid impact to the machine-made sand, rigid friction and rigid impact exist between the machine-made sand and the inner wall of the stirring kettle, the machine-made sand is easy to damage in the stirring process, more stone powder is generated, the stone powder content is less than 15%, the concrete strength is improved, when the stone powder content is too high, the concrete strength is reduced mainly because the stone powder can react with cement in the hydration process to form carbo-aluminate, so that the concrete is better compact, the concrete can be filled structurally, the strength is improved, the unreacted stone powder can be gathered on the surface of the aggregate, the roughness degree of the cement colloid is reduced, the cementing capability of the cement colloid and the aggregate is influenced, the interface performance is damaged, the strength and the impervious performance are reduced, and therefore, in order to better control the stone powder content, the phenomenon that the stone powder is more abrasive and the abrasive wear phenomenon is generated in the mixing process as much as possible is needed.
The rubber layer is arranged on the inner wall of the mixing barrel, so that the machine-made sand is not easy to damage due to impact with the mixing barrel, the generation of stone powder is reduced, and the stirring blades are not arranged, so that the impact on the machine-made sand in the stirring process of the stirring blades is not generated, the machine-made sand is only subjected to the impact force generated by the mutual collision of the machine-made sand and the machine-made sand in the mixing process, the machine-made sand is quite strong, the damage phenomenon is not easy to occur in the mutual collision, the formula contains the expansion resin, the expansion resin has certain elasticity, the impact of the machine-made sand can be further buffered, the machine-made sand is selected by rotating the mixing barrel by utilizing the friction force of the rubber layer, the material is mixed by the speed difference, and the cement, the fly ash, the coagulant and the expansion resin are premixed in the mixing process, the water adding process is shortened, the waste of the hydration reaction time is reduced, the phenomenon that the mortar is not obtained and the mortar is coagulated in use is shortened, the quick-stopping effect is realized, the mortar is not easy to cause, the time-consuming mortar is high in cost and the material is high in cost and economic.
Through the specific linear velocity of selecting the mixing drum outside for mixing effect is better, and is difficult for producing more stone powder, and the stone powder content is controlled, effectively strengthens concrete structure and is difficult for appearing the phenomenon that concrete performance descends.
Preferably, the mixing barrel is fixedly connected with a feeding barrel, the feeding barrel is provided with a plurality of discharge holes, and the discharge holes face the inner wall of the mixing barrel; the premix and the expansion resin are put into a charging barrel, and the machine-made sand is put into a mixing barrel.
Through adopting above-mentioned technical scheme, throw the storage bucket through setting up, throw in throwing the storage bucket with premix and expansion resin, when the mixing drum is rotatory, throw the storage bucket because of fixing on the mixing drum, can follow the mixing drum rotation, utilize centrifugal force for premix and expansion resin spray on the mechanism sand, make premix and expansion resin throw in-process be difficult for piling up, thereby more easily mix evenly with the mechanism sand, shorten mixing time, when improving efficiency, further reduce the production of mountain flour.
Preferably, climbing strips extending along the circumferential direction of the mixing barrel and close to the opening direction of the mixing barrel are fixed on the surface of the rubber layer, and a space is reserved between the tops of the climbing strips and the tops of the mixing barrel.
Through adopting above-mentioned technical scheme, through setting up climbing strip for mixing barrel pivoted in-process, part mechanism sand falls again along climbing strip after climbing, further improves the effect of mixing, makes the material misce bene, shortens the time of adding water stirring better, and the mortar of making has safer engineering time.
Preferably, the distance from the top of the climbing strip to the bottom of the mixing drum is 60% -70% of the height of the mixing drum.
Through adopting above-mentioned technical scheme, through the height of specifically selecting climbing strip, effectively reduce the mechanism sand and break away from the phenomenon of mixing drum because of climbing, reduce material loss, the mortar steady quality of making.
In summary, the application has the following beneficial effects:
1. according to the application, the powder content of the machine-made sand is controlled, so that the prepared concrete structure after mortar solidification is well filled, the gap is well filled, the compactness is improved, the waterproof performance is improved, the accelerator formed by compounding aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate is matched, the hydration speed of the mortar is higher, but hydration heat energy is more uniformly distributed, the generation of local cracks is reduced, fine lines can be uniformly generated, and then the deformation supplement of the expansion resin and the stone powder filling in the machine-made sand are matched, so that the fine lines are quickly repaired while being generated, and finally the complete and compact concrete structure is formed, and the impervious and plugging effects are remarkably improved.
2. According to the application, the granite particles are preferably adopted to provide better strength performance, so that the prepared concrete has higher strength, the characteristics of water absorption expansion of the mudstone particles are utilized to generate volume expansion by matching with the mudstone particles, so that the repairing of fine lines is realized, the prepared concrete structure is more compact, the impermeability is better, moreover, as the expansion of the mudstone particles belongs to rigid expansion, if the concrete structure is directly used, the concrete structure is easy to crack due to excessive expansion, the dosage is strictly controlled, but the exact expansion effect is difficult to achieve by controlling the dosage, so that the dosage of the mudstone particles is in an insufficient state by matching with the expansion resin, and the expansion resin is extruded after the mudstone particles are expanded, so that a more compact structure is obtained, and the phenomenon of excessive expansion and cracking is difficult to occur, so that the better filling effect is realized.
3. In the application, a special mixing device is preferably adopted, so that a large amount of stone powder is not easy to generate in the mixing process, the phenomenon that more stone powder is generated due to abrasion of machine-made sand in the mixing process is reduced, and the strength and the impermeability of the prepared concrete are not easy to be reduced.
Drawings
FIG. 1 is a schematic view showing the overall structure of a mixing apparatus in example 1;
FIG. 2 is a schematic view showing the internal structure of the mixing apparatus in example 1;
in the figure: 1. a platform; 11. a support leg; 12. a limiting ring; 13. a sliding groove; 14. a ball; 15. a bearing; 2. a mixing drum; 21. a rubber layer; 211. climbing the strip; 22. a fixed rod; 23. charging barrel; 231. a discharge port; 24. a rolling groove; 3. and a motor.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A mortar for quick plugging is prepared from the following components.
Water, silicate cement, fly ash, accelerator, expansion resin and machine-made sand.
The Portland cement is ordinary Portland cement P.O 42.5.5 and is commercially available.
Wherein the fly ash is secondary fly ash and is sold in the market.
Wherein, the accelerator is the compound of aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate, and the mass ratio of the aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate is 8:2:1:1:3, aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate are all from commercial sources.
Wherein the expansion resin is water-absorbent expansion resin SAP, which is purchased from Hebei Yan chemical industry Co., ltd, 60 mesh.
Wherein, the machine-made sand is the compounding of granite particles and mudstone particles, and the mass ratio of the granite particles to the mudstone particles is 10:1, the grain diameter of the machine-made sand is 2.1+/-0.1 mm, the sand content of the machine-made sand is 11+/-1%, granite grains and mudstone grains are all sold in the market, and the grain diameters are 2.1+/-0.1 mm.
The preparation method of the quick plugging mortar comprises the following steps:
and 1) adding 1955g of cement, 345g of fly ash and 37.5g of accelerator into a stirring kettle, stirring for 5min at the rotating speed of 120r/min, and uniformly mixing to obtain a premix.
Step 2), 11350g of machine-made sand, 18.7g of expansion resin and the premix prepared in the step 1) are put into a mixing device and uniformly mixed to obtain a mixture.
Wherein, referring to fig. 1, mixing arrangement includes the support, and the support is including the platform 1 of level setting, and platform 1 is plectane form, and platform 1 bottom fixedly connected with landing leg 11, landing leg 11 total three, along platform 1 circumferencial direction evenly distributed and be close to platform 1 edge.
Referring to fig. 2, the top of the platform 1 is rotatably connected with a mixing drum 2, the mixing drum 2 is a drum with an upward opening, a rolling groove 24 is recessed in the bottom of the mixing drum 2, a sliding groove 13 is recessed in the top of the platform 1, and the rolling groove 24 and the sliding groove 13 extend along the circumferential direction to form circular grooves which are communicated in a tail-to-tail mode.
The top of the platform 1 is fixedly connected with a limiting ring 12, the circle center of the limiting ring 12 and the circle center of the platform 1 are positioned on the same vertical line, a ball 14 is placed in the sliding groove 13, when the mixing drum 2 is arranged on the platform 1, the rolling groove 24 is opposite to the sliding groove 13, the ball 14 is simultaneously positioned in the sliding groove 13 and the rolling groove 24, the limiting ring 12 is just sleeved outside the mixing drum 2, a gap is reserved between the inner wall of the limiting ring 12 and the outer wall of the mixing drum 2, and the sliding connection between the outer wall of the mixing drum 2 and the inner wall of the limiting ring 12 is realized by injecting lubricating oil.
The center of a circle of the platform 1 is penetrated with a through hole, a bearing 15 is arranged in the through hole, a driving device is fixed at the bottom of the platform 1 and is a motor 3, a rotating shaft of the motor 3 is rotationally connected with the platform 1 through the bearing 15, the rotating shaft of the motor 3 is detachably and fixedly connected with the top of the mixing drum 2, the axis of the rotating shaft of the motor 3 is collinear with the axis of the mixing drum 2 and perpendicular to the horizontal plane, and the mixing drum 2 is driven to rotate through the motor 3.
The inner wall of the mixing barrel 2 is fixedly connected with a rubber layer 21, the rubber layer 21 covers the inner side wall and the inner bottom wall of the mixing barrel 2, the thickness of the rubber layer 21 is 1cm, the inner wall of the rubber layer 21 is fixedly connected with a plurality of climbing strips 211, the climbing strips 211 extend upwards along the circumferential direction of the mixing barrel 2, an included angle between the climbing strips 211 and the horizontal plane is 45 degrees, the distance between the top of the climbing strips 211 and the bottom of the mixing barrel 2 is 60% of the height of the mixing barrel 2 (in other embodiments, the distance between the top of the climbing strips 211 and the bottom of the mixing barrel 2 can be 62%, 65%, 68% and 70% of the height of the mixing barrel 2), and the distance between the climbing strips 211 and the inner wall of the mixing barrel 2 is 3cm.
The mixing drum 2 top fixedly connected with dead lever 22, dead lever 22 one end and the top fixed connection of mixing drum 2 lateral wall, the dead lever 22 other end extends towards mixing drum 2 axis, dead lever 22 totally 4, the dead lever 22 is kept away from the tip fixedly connected with of mixing drum 2 lateral wall and is thrown material bucket 23, throw material bucket 23 and be the cask, the opening is up, throw material bucket 23 lateral wall and run through there is discharge gate 231, discharge gate 231 has 6, evenly distributed along throwing material bucket 23 circumferencial direction, discharge gate 231 sectional area is 3cm 2 (in other embodiments, the cross-sectional area of the outlet 231 may be 4cm 2 、5cm 2 ) The discharge hole 231 is close to the bottom of the charging barrel 23, and the fixed rod 22 is far away from the wall of the mixing barrel 2The end part is fixedly connected with the outer side wall of the feeding barrel 23, and the top of the fixing rod 22 is flush with the top of the feeding barrel 23.
When the machine-made sand, the expanded resin and the premix are mixed, the machine-made sand is put into the mixing barrel 2, the expanded resin and the premix are put into the feeding barrel 23, the motor 3 is started, the linear speed of the outer wall of the mixing barrel 2 is controlled to be 200m/min, and the mixture is mixed for 3min, at the moment, the feeding barrel 23 is fixed with the mixing barrel 2, the feeding barrel 23 rotates along with the mixing barrel 2, the premix in the feeding barrel 23 and the expanded resin are subjected to centrifugal force, the premix is sprayed out from the discharge hole 231 and uniformly sprinkled into the machine-made sand in the mixing barrel 2, after all materials enter the mixing barrel 2, the mixing barrel 2 rotates, the rubber layer 21 provides friction force to drive the materials to rotate, and the speed difference is generated due to different material densities, so that the mixing effect is realized, in addition, the running speed of the materials is lower than the rotating speed of the mixing barrel 2, so that the materials fall down after climbing up to the top along the climbing bar 211, the materials are mixed uniformly, the forced action of stirring blades is avoided in the mixing process, the machine-made sand is not easy to cause the breaking of the machine-made sand, the stone powder is reduced, the stone powder content is effectively controlled, the content is reduced, the strength of the concrete is reduced, and the concrete is made, and the anti-seepage performance is reduced.
And 3) putting 1000g of water into a stirring kettle, continuously stirring at a rotating speed of 60r/min, putting the mixture obtained in the step 2), and stirring at the rotating speed of 60r/min for 15s after the mixture is put into, and uniformly mixing to obtain the mortar capable of stopping leakage rapidly.
Example 2
Compared with example 1, the mortar for quick plugging is only different in that:
in the step 1), the cement charge was 1965g, the fly ash charge was 355g, and the accelerator charge was 38.5g.
In the step 2), the amount of the machine-made sand was 11400g and the amount of the swelling resin was 18.8g.
Example 3
Compared with example 1, the mortar for quick plugging is only different in that:
in the step 2), when the machine-made sand, the expansion resin and the premix are mixed, the machine-made sand is put into a mixing barrel, the expansion resin and the premix are put into the feeding barrel, a motor is started, the linear speed of the outer wall of the mixing barrel is controlled to be 250m/min, and the mixing is carried out for 3min.
Example 4
Compared with example 1, the mortar for quick plugging is only different in that:
the grain diameter of the machine-made sand is 2.4 plus or minus 0.1mm.
Comparative example 1
Compared with example 1, the mortar for quick plugging is only different in that:
in the accelerator, sodium metaaluminate is used for replacing aluminum sulfate in an equivalent way.
Comparative example 2
Compared with example 1, the mortar for quick plugging is only different in that:
in the accelerator, methacrylic acid is replaced by sodium metaaluminate in an equivalent amount.
Comparative example 3
Compared with example 1, the mortar for quick plugging is only different in that:
in the accelerator, sodium fluoride is replaced by sodium metaaluminate in an equivalent way.
Comparative example 4
Compared with example 1, the mortar for quick plugging is only different in that:
in the accelerator, triisopropanolamine is replaced by sodium metaaluminate in an equivalent way.
Comparative example 5
Compared with example 1, the mortar for quick plugging is only different in that:
in the accelerator, sodium metaaluminate is used for replacing magnesium aluminum silicate in an equivalent way.
Comparative example 6
Compared with example 1, the mortar for quick plugging is only different in that:
in the step 2), 11350g of machine-made sand, 18.7g of expansion resin and the premix prepared in the step 1) are put into a stirring kettle, stirred for 3min at the rotating speed of 120r/min, and uniformly mixed to obtain a mixture.
Comparative example 7
Compared with example 1, the mortar for quick plugging is only different in that:
in the machine-made sand, basalt particles are adopted to replace mudstone particles in equal quantity.
Experiment 1
The 7-day, 28-day compressive strength and 28-day splitting tensile strength of the samples prepared from the quick plugging mortar of each example and comparative example were tested according to the standard of the common concrete mechanical property test method GB/T50081-2016.
Experiment 2
The initial setting time and final setting time of the quick plugging mortar of each example and comparative example were measured according to the standard of the conventional concrete mixture Performance test method GB/T50080-2016.
Experiment 3
The anti-permeability grade of the quick plugging mortar of each example and comparative example was tested according to the progressive pressurization method in the test method Standard for the long-term performance and durability of ordinary concrete GB/T50082-2009.
The results of experiments 1-3 are detailed in Table 1.
TABLE 1
According to the data in the table 1, the data in the example 1 and the data in the comparative examples 1 to 5 can be compared, if and only if aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum silicate are compounded to prepare the accelerator, the prepared concrete has higher impervious grade, the initial setting time is faster, the quick plugging is effectively realized, and when any component of the accelerator is replaced by other substances with quick setting effects, the initial setting time of mortar is prolonged to a certain extent, the impervious grade is reduced, the crack is increased, the plugging effect is reduced, and the plugging effect can be improved only by repeatedly brushing the mortar, so that the trouble is caused.
According to the data in Table 1, the data in example 1 and comparative example 6 are compared, and when the stirred tank is used for stirring, a large amount of stone powder is generated, so that the stone powder amount in mortar is excessive, the strength of the prepared concrete is reduced, and the stability of plugging of the mortar is affected.
According to the data comparison of the embodiment 1 and the comparative example 7 in the table 1, other rock particles are adopted to replace mudstone, so that the strength and the impermeability of the prepared concrete are reduced, and the compactness of the concrete can be well improved after the expansion of the mudstone is matched with the expansion resin, so that the quality of the concrete is improved. The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (4)
1. A mortar for quick plugging is characterized in that: the composite material consists of the following components in parts by weight:
100 parts of water;
195.5 to 196.5 parts of Portland cement;
34.5-35.5 parts of fly ash;
3.75-3.85 parts of accelerator;
1.87-1.88 parts of expansion resin;
1135-1140 parts of machine-made sand;
the powder content of the machine-made sand is 10-12%;
the accelerator is a compound of aluminum sulfate, methacrylic acid, sodium fluoride, triisopropanolamine and aluminum magnesium silicate;
the mass ratio of the aluminum sulfate, the methacrylic acid, the sodium fluoride, the triisopropanolamine and the aluminum magnesium silicate is 8:2:1:1:3, a step of;
the preparation method of the quick plugging mortar comprises the following steps:
step 1), uniformly mixing cement, fly ash and an accelerator to obtain a premix;
step 2), adding the machine-made sand and the expansion resin into the premix, and uniformly mixing to obtain a mixture;
step 3), water is injected into the mixture, and the mixture is uniformly mixed, so that the mortar capable of rapidly plugging is obtained;
in the step 2), machine-made sand, expanded resin and premix are uniformly mixed through a mixing device, the mixing device comprises a bracket, the bracket is rotationally connected with a mixing barrel (2), the device also comprises a driving device for driving the mixing barrel (2) to rotate, the rotation axis of the mixing barrel (2) is vertical to a horizontal plane, a rubber layer (21) is fixedly connected to the inner wall of the mixing barrel (2), a climbing strip (211) which is arranged in a manner of extending along the circumferential direction of the mixing barrel (2) and is close to the opening direction of the mixing barrel (2) is fixed on the surface of the rubber layer (21), a distance is reserved between the top of the climbing strip (211) and the top of the mixing barrel (2), the distance between the top of the climbing strip (211) and the bottom of the mixing barrel (2) is 60% -70% of the height of the mixing barrel (2), and when the machine-made sand, the expanded resin and the premix are mixed, the linear speed of the outer wall of the mixing barrel (2) is 200-250m/min;
the mixing barrel (2) is fixedly connected with a feeding barrel (23), the feeding barrel (23) is provided with a plurality of discharge holes (231), and the discharge holes (231) face the inner wall of the mixing barrel (2); the premix and the expanded resin are put into a feeding barrel (23), and the machine-made sand is put into a mixing barrel (2).
2. A quick plugging mortar according to claim 1, wherein: the grain diameter of the machine-made sand is 2-2.5mm.
3. A quick plugging mortar according to claim 2, wherein: the machine-made sand is prepared by compounding granite particles and mudstone particles.
4. A quick plugging slurry according to claim 3 wherein: the mass ratio of the granite particles to the mudstone particles is 10:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210770163.2A CN115304320B (en) | 2022-07-01 | 2022-07-01 | Mortar capable of rapidly plugging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101475335A (en) * | 2009-01-13 | 2009-07-08 | 江苏博特新材料有限公司 | Liquid accelerator for sprayed concrete and preparation thereof |
| CN107857501A (en) * | 2017-11-07 | 2018-03-30 | 四川同舟化工科技有限公司 | A kind of alkali-free quick-coagulant of the solidifying early strength agent organic amine material containing rush and preparation method thereof |
| CN111113678A (en) * | 2020-01-13 | 2020-05-08 | 杭州临安祥立建筑工程有限公司 | Mortar mixer for engineering building |
| CN211026062U (en) * | 2019-08-08 | 2020-07-17 | 甘肃银杏健康实业有限公司 | High-efficient machine that mixes |
| KR102219375B1 (en) * | 2020-07-14 | 2021-02-25 | (주)한국대상안전 | Repair and reinforcement method for underwater non-separable cement mortar composition and underwater structure using the same |
| CN213699701U (en) * | 2020-10-29 | 2021-07-16 | 河南星伟智能建筑材料科技有限公司 | Mixing device for producing thermal insulation mortar |
| CN113816690A (en) * | 2021-10-19 | 2021-12-21 | 龙泉非开挖管道技术(江苏)有限公司 | Concrete repairing material and preparation method thereof |
| CN114057454A (en) * | 2021-11-30 | 2022-02-18 | 长春市城建维护集团股份有限公司 | Self-compacting quick-setting dry powder mortar and preparation method thereof |
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2022
- 2022-07-01 CN CN202210770163.2A patent/CN115304320B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475335A (en) * | 2009-01-13 | 2009-07-08 | 江苏博特新材料有限公司 | Liquid accelerator for sprayed concrete and preparation thereof |
| CN107857501A (en) * | 2017-11-07 | 2018-03-30 | 四川同舟化工科技有限公司 | A kind of alkali-free quick-coagulant of the solidifying early strength agent organic amine material containing rush and preparation method thereof |
| CN211026062U (en) * | 2019-08-08 | 2020-07-17 | 甘肃银杏健康实业有限公司 | High-efficient machine that mixes |
| CN111113678A (en) * | 2020-01-13 | 2020-05-08 | 杭州临安祥立建筑工程有限公司 | Mortar mixer for engineering building |
| KR102219375B1 (en) * | 2020-07-14 | 2021-02-25 | (주)한국대상안전 | Repair and reinforcement method for underwater non-separable cement mortar composition and underwater structure using the same |
| CN213699701U (en) * | 2020-10-29 | 2021-07-16 | 河南星伟智能建筑材料科技有限公司 | Mixing device for producing thermal insulation mortar |
| CN113816690A (en) * | 2021-10-19 | 2021-12-21 | 龙泉非开挖管道技术(江苏)有限公司 | Concrete repairing material and preparation method thereof |
| CN114057454A (en) * | 2021-11-30 | 2022-02-18 | 长春市城建维护集团股份有限公司 | Self-compacting quick-setting dry powder mortar and preparation method thereof |
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| CN115304320A (en) | 2022-11-08 |
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