CN111763048A - Underwater non-dispersion quick-setting and quick-hardening cement-based composite material and preparation method thereof - Google Patents

Underwater non-dispersion quick-setting and quick-hardening cement-based composite material and preparation method thereof Download PDF

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Publication number
CN111763048A
CN111763048A CN202010598320.7A CN202010598320A CN111763048A CN 111763048 A CN111763048 A CN 111763048A CN 202010598320 A CN202010598320 A CN 202010598320A CN 111763048 A CN111763048 A CN 111763048A
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percent
cement
quick
agent
composite material
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陈亮
邵晓妹
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Wuhan Changjiang Kechuang Technology Development Co ltd
Changjiang River Scientific Research Institute Changjiang Water Resources Commission
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Wuhan Changjiang Kechuang Technology Development Co ltd
Changjiang River Scientific Research Institute Changjiang Water Resources Commission
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Priority to CN202010598320.7A priority Critical patent/CN111763048A/en
Publication of CN111763048A publication Critical patent/CN111763048A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/74—Underwater applications
    • 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

Abstract

The invention provides an underwater non-dispersion quick-setting and quick-hardening cement-based composite material and a preparation method thereof. The underwater non-dispersion quick-setting and quick-hardening cement-based composite material is composed of the following raw materials in percentage by weight: 20 to 30 percent of cement, 5 to 10 percent of calcium aluminate, 3 to 7 percent of quartz sand, 10 to 20 percent of aggregate, 5 to 15 percent of cementing material, 0.1 to 0.5 percent of rust inhibitor and 0.5 to 2 percent of mineral admixture. According to the underwater non-dispersion quick-setting and quick-hardening cement-based composite material and the preparation method thereof, the addition of the flocculating agent and the cementing material can not only prevent the dispersion of concrete, but also effectively improve the coagulation efficiency by matching with the addition of the cementing material, can change the slurry into a firm stone body quickly, has good filling property for narrow gap pouring, can effectively reduce the loss of hardening strength caused by the dispersion of grouting mixture, can improve the binding power of the grouting hardening material and a reinforcing steel bar, and can effectively meet the use requirements of different positions.

Description

Underwater non-dispersion quick-setting and quick-hardening cement-based composite material and preparation method thereof
Technical Field
The invention relates to the field of building materials, in particular to an underwater non-dispersion quick-setting and quick-hardening cement-based composite material and a preparation method thereof.
Background
The cement-base composite material is made up by using silicate cement as base body, using alkali-resisting glass fibre, general synthetic fibre, various ceramic fibres, high-performance fibre of carbon and aramid fibre, metal wire and natural plant fibre and mineral fibre as reinforcing body and adding filling material, chemical adjuvant and water through a compounding process. Taking a composite material containing about 3-10% of short-cut alkali-resistant glass fiber as an example, the density of the composite material is 1600-2500 kg/m3, the impact strength is 8.0-24.5 N.mm/mm 2, the compression strength is 48-83 MPa, and the thermal expansion coefficient is (11-16) multiplied by 10-6K-1. The properties vary with the raw materials, proportions, processes and curing conditions used.
However, the existing cement-based composite material has certain defects, can not meet the requirements of different environments and positions of hydraulic engineering, not only is the concrete easy to disperse, but also the coagulation efficiency is poor, the slurry can not be rapidly changed into firm stone, the filling property for narrow gap pouring is poor, the bonding force between a grouting hardened substance and a reinforcing steel bar is reduced, and the application range of the cement-based composite material is seriously reduced.
Therefore, there is a need to provide a cement-based composite material which is not dispersed under water and is rapidly solidified and hardened, and a preparation method thereof to solve the above technical problems.
Disclosure of Invention
The invention provides an underwater non-dispersing quick-setting and quick-hardening cement-based composite material and a preparation method thereof, and solves the problems that concrete is easy to disperse and the setting efficiency is poor.
In order to solve the technical problems, the underwater non-dispersive quick-setting and quick-hardening cement-based composite material provided by the invention comprises the following raw materials in percentage:
20 to 30 percent of cement, 5 to 10 percent of calcium aluminate, 3 to 7 percent of quartz sand, 10 to 20 percent of aggregate, 5 to 15 percent of cementing material, 0.1 to 0.5 percent of rust inhibitor, 0.5 to 2 percent of mineral admixture, 2 to 5 percent of flocculant, 0.3 to 0.8 percent of water reducing agent, 0.2 to 0.5 percent of expanding agent, 0.3 to 1.0 percent of non-dispersant, 0.1 to 0.3 percent of coagulant and 10 to 12 percent of water;
the gelled material can be changed into a firm stone body from slurry under the physical and chemical actions, and can be used for cementing other materials to prepare a composite solid substance with certain mechanical strength;
by adding the flocculating agent, the concrete can not be dispersed, and the coagulation efficiency is effectively improved by matching with the addition of the cementing material, so that the dispersibility and self-leveling property of underwater grouting mix resistance are improved, the grouting mix material has good filling property for narrow gap pouring, the loss of hardening strength caused by the dispersion of the grouting mix material can be effectively reduced, the binding force of the grouting mix material and the reinforcing steel bar can be improved, and the use at different positions is effectively met;
the mineral admixture can obviously improve chemical substances of the concrete performance, has larger influence on the performance of the concrete, has certain improvement effect on the anti-carbonization performance of the concrete, has certain linear relation between the carbonization depth and the porosity of the concrete, has great influence on the frost resistance of the concrete, and has better frost resistance of the concrete doped with the air-entraining water reducing agent;
the expanding agent is a chemical additive added in cement, when the cement is set and hardened, it expands with the volume, and plays the role of compensating the shrinkage and stretching the reinforcing bar to generate prestress and fully filling the cement gap.
Preferably, the material composition comprises the following raw materials in percentage by weight: 20% of cement, 5% of calcium aluminate, 4% of quartz sand, 10% of aggregate, 8% of cementing material, 0.3% of rust inhibitor, 0.7% of mineral admixture, 2% of flocculant, 0.5% of water reducing agent, 0.2% of expanding agent, 0.8% of non-dispersant, 0.2% of coagulation regulator and 10% of water.
Preferably, the cement is ordinary portland cement.
Preferably, the quartz sand is selected from one of the following: 10-30 meshes of quartz sand, 40-60 meshes of quartz sand and 70-100 meshes of quartz sand.
Preferably, the aggregate is fine aggregate and coarse aggregate, and is composed of the following raw materials in percentage by weight: 40-60% of fine aggregate and 30-50% of coarse aggregate, wherein the particle size of the fine aggregate is 3-6 mm, and the particle size of the coarse aggregate is 3-6 mm.
Preferably, the flocculant consists of the following raw materials in percentage by weight: 1.0 percent of methylcellulose, 1.0 percent of sulfamic acid water reducing agent, 0.3 percent of lignosulfonate, 1.5 percent of fly ash, 0.8 percent of zeolite powder, 0.8 percent of calcium formate, 1.0 percent of silica fume and 0.8 percent of calcium metasilicate.
A preparation method of an underwater non-dispersion quick-setting and quick-hardening cement-based composite material comprises the following steps:
s1, weighing the components: 20% of cement, 5% of calcium aluminate, 4% of quartz sand, 10% of aggregate, 8% of cementing material, 0.3% of rust inhibitor, 0.7% of mineral admixture, 2% of flocculant, 0.5% of water reducing agent, 0.2% of expanding agent, 0.8% of non-dispersant, 0.2% of coagulation regulator and 10% of water;
s2, adding the cement, the calcium aluminate, the quartz sand and the cementing material into a stirrer, and stirring and mixing the cement, the calcium aluminate, the quartz sand and the cementing material through the stirrer;
s3, placing water into a stirring barrel, placing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent into the stirring barrel, and stirring and mixing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent through the stirring barrel;
s4, putting the water mixture in the S3 into a stirrer in the S2, stirring again, adding the expanding agent and the thickening time control agent in the process of stirring again, and finally, until the material is uniformly viscous.
Preferably, the mixer in S2 is used for mixing at 7000r/min for 20min, and the mixer in S3 is used for mixing at 3000r/min for 5 min.
Preferably, the stirring speed of the stirrer in the S4 is 6000r/min, and the mixture is mixed for 25min to 40 min.
Preferably, the adding time of the swelling agent and the coagulation regulator in the S4 is 10-15min of stirring time.
Compared with the prior art, the underwater non-dispersion quick-setting and quick-hardening cement-based composite material and the preparation method thereof provided by the invention have the following beneficial effects:
the invention provides a cement-based composite material which is not dispersed under water and is quickly solidified and hardened and a preparation method thereof, cement, calcium aluminate, quartz sand and a cementing material are added into a stirrer, the cement, the calcium aluminate, the quartz sand and the cementing material are stirred and mixed by the stirrer, and the mixture is mixed for 20min at the stirring speed of 7000 r/min; putting water into a stirring barrel, then putting the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent into the stirring barrel, and stirring and mixing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent through the stirring barrel at the stirring speed of 3000r/min for 5 min; the water mixture in the S3 is placed in a stirrer in the S2 and stirred again, the stirring speed of the stirrer is 6000r/min, the mixture is mixed for 25min to 40min, the mixture is stirred for 10 min to 15min, then an expanding agent and a coagulation regulator are added until the material is uniform and viscous, the flocculating agent and the cementing material are added, so that the concrete is not dispersed, the coagulation efficiency is effectively improved by matching with the addition of the cementing material, the quick slurry can be changed into firm stone, the filling performance for narrow gap pouring is good, the loss of the hardening strength caused by the dispersion of grouting mixture can be effectively reduced, the bonding force between the grouting hardening material and the reinforcing steel bar can be improved, and the use at different positions is effectively met.
Drawings
FIG. 1 is a flow chart of a method for preparing an underwater non-dispersive rapid-setting and rapid-hardening cement-based composite material provided by the invention;
FIG. 2 is a schematic structural view of a manufacturing apparatus according to the present invention;
fig. 3 is a structural sectional view of the movable box shown in fig. 2.
Reference numbers in the figures: 1. the device comprises a stirring tank, 2, a U-shaped frame, 3, a motor, 4, a stirring shaft, 5, a water tank, 6, a movable box, 7, a rotating shaft, 8, a winding wheel, 9, a rope, 10, a pull ring, 11, a return spring, 12, a mixing shaft, 13, a feeding nozzle, 14, a water supply pipe, 15 and a water drain pipe.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a flow chart of a method for preparing an underwater non-dispersive quick-setting and quick-hardening cement-based composite material according to the present invention; FIG. 2 is a schematic structural view of a manufacturing apparatus according to the present invention; fig. 3 is a structural sectional view of the movable box shown in fig. 2. The underwater non-dispersion quick-setting and quick-hardening cement-based composite material and the preparation method thereof comprise the following raw materials in percentage:
20 to 30 percent of cement, 5 to 10 percent of calcium aluminate, 3 to 7 percent of quartz sand, 10 to 20 percent of aggregate, 5 to 15 percent of cementing material, 0.1 to 0.5 percent of rust inhibitor, 0.5 to 2 percent of mineral admixture, 2 to 5 percent of flocculant, 0.3 to 0.8 percent of water reducing agent, 0.2 to 0.5 percent of expanding agent, 0.3 to 1.0 percent of non-dispersant, 0.1 to 0.3 percent of coagulant and 10 to 12 percent of water;
the gelled material can be changed into a firm stone body from slurry under the physical and chemical actions, and can be used for cementing other materials to prepare a composite solid substance with certain mechanical strength;
by adding the flocculating agent, the concrete can not be dispersed, and the coagulation efficiency is effectively improved by matching with the addition of the cementing material, so that the dispersibility and self-leveling property of underwater grouting mix resistance are improved, the grouting mix material has good filling property for narrow gap pouring, the loss of hardening strength caused by the dispersion of the grouting mix material can be effectively reduced, the binding force of the grouting mix material and the reinforcing steel bar can be improved, and the use at different positions is effectively met;
the mineral admixture can obviously improve chemical substances of the concrete performance, has larger influence on the performance of the concrete, has certain improvement effect on the anti-carbonization performance of the concrete, has certain linear relation between the carbonization depth and the porosity of the concrete, has great influence on the frost resistance of the concrete, and has better frost resistance of the concrete doped with the air-entraining water reducing agent;
the expanding agent is a chemical additive added in cement, when the cement is set and hardened, it expands with the volume, and plays the role of compensating the shrinkage and stretching the reinforcing bar to generate prestress and fully filling the cement gap.
The composite material consists of the following raw materials in percentage by weight: 20% of cement, 5% of calcium aluminate, 4% of quartz sand, 10% of aggregate, 8% of cementing material, 0.3% of rust inhibitor, 0.7% of mineral admixture, 2% of flocculant, 0.5% of water reducing agent, 0.2% of expanding agent, 0.8% of non-dispersant, 0.2% of coagulation regulator and 10% of water.
The cement is ordinary portland cement, is convenient for get the material, reduces the cost of production.
The quartz sand is selected from one of the following: 10-30 meshes of quartz sand, 40-60 meshes of quartz sand and 70-100 meshes of quartz sand, so that the quartz sand can be better fused with a cement mixture, and the strength of the composite forage is improved.
The aggregate is fine aggregate and coarse aggregate and is composed of the following raw materials in percentage by weight: 40-60% of fine aggregate and 30-50% of coarse aggregate, wherein the particle size of the fine aggregate is 3-6 mm, and the particle size of the coarse aggregate is 3-6 mm;
the coarse aggregate and the fine aggregate are mixed by the stirrer, so that the coarse aggregate and the fine aggregate are convenient to be matched with each other, the defects between the coarse aggregate and the fine aggregate are overcome, and the hardness and the compactness of the composite material are improved.
The flocculant comprises the following raw materials in percentage by weight: 1.0 percent of methylcellulose, 1.0 percent of sulfamic acid water reducing agent, 0.3 percent of lignosulfonate, 1.5 percent of fly ash, 0.8 percent of zeolite powder, 0.8 percent of calcium formate, 1.0 percent of silica fume and 0.8 percent of calcium metasilicate.
A preparation method of an underwater non-dispersion quick-setting and quick-hardening cement-based composite material comprises the following steps:
s1, weighing the components: 20% of cement, 5% of calcium aluminate, 4% of quartz sand, 10% of aggregate, 8% of cementing material, 0.3% of rust inhibitor, 0.7% of mineral admixture, 2% of flocculant, 0.5% of water reducing agent, 0.2% of expanding agent, 0.8% of non-dispersant, 0.2% of coagulation regulator and 10% of water;
s2, adding the cement, the calcium aluminate, the quartz sand and the cementing material into a stirrer, and stirring and mixing the cement, the calcium aluminate, the quartz sand and the cementing material through the stirrer;
s3, placing water into a stirring barrel, placing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent into the stirring barrel, and stirring and mixing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent through the stirring barrel;
s4, putting the water mixture in the S3 into a stirrer in the S2, stirring again, adding the expanding agent and the thickening time control agent in the process of stirring again, and finally, until the material is uniformly viscous.
The stirring speed of the stirrer in the S2 is 7000r/min for mixing 20min, and the stirring speed of the stirring barrel in the S3 is 3000r/min for mixing 5 min.
And in the S4, the stirring speed of the stirrer is 6000r/min, and the mixture is mixed for 25min to 40 min.
The adding time of the expanding agent and the coagulation regulator in the S4 is 10-15min of stirring time.
The preparation method of the underwater non-dispersive quick-setting and quick-hardening cement-based composite material provided by the invention has the following working principle:
s1, weighing the components: 20% of cement, 5% of calcium aluminate, 4% of quartz sand, 10% of aggregate, 8% of cementing material, 0.3% of rust inhibitor, 0.7% of mineral admixture, 2% of flocculant, 0.5% of water reducing agent, 0.2% of expanding agent, 0.8% of non-dispersant, 0.2% of coagulation regulator and 10% of water;
s2, adding the cement, the calcium aluminate, the quartz sand and the cementing material into a stirrer, and stirring and mixing the cement, the calcium aluminate, the quartz sand and the cementing material by the stirrer at a stirring speed of 7000r/min for 20 min;
s3, placing water into a stirring barrel, placing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent into the stirring barrel, and stirring and mixing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent through the stirring barrel at the stirring speed of 3000r/min for 5 min;
and S4, putting the water mixture in the S3 into a stirrer in the S2, stirring again, mixing for 25-40 min at the stirring speed of 6000r/min, stirring for 10-15min, adding an expanding agent and a coagulation regulator, and finally until the material is uniformly viscous.
The invention also provides a preparation device, which comprises a stirring tank 1;
the two sides of the stirring tank 1 are fixedly connected with U-shaped frames 2 through supports, the top of each U-shaped frame 2 is fixedly connected with a motor 3 through a support frame, an output shaft of each motor 3 is fixedly connected with a stirring shaft 4, and the bottom end of each stirring shaft 4 penetrates through the stirring tank 1 and extends into the stirring tank 1;
a water tank 5 is fixedly connected to one side of the U-shaped frame 2, a movable box 6 is fixedly connected to the top of the water tank 5, a rotating shaft 7 is rotatably connected to the top of the inner wall of the movable box 6, a winding wheel 8 is fixedly connected to the outer surface of the rotating shaft 7, a rope 9 is wound on the outer surface of the winding wheel 8, one end of the rope 9 penetrates through the movable box 6 and extends to the outside of the movable box 6, and a pull ring 10 is fixedly connected to one end of the rope 9 extending to the outside of the movable box 6;
a return spring 11 is fixedly connected to the top of the inner wall of the movable box 6, the bottom end of the return spring 11 is fixed to the top of the winding wheel 8, the return spring 11 is located on the outer surface of the rotating shaft 7, the bottom end of the rotating shaft 7 penetrates through the water tank 5 and extends into the water tank 5, one end of the rotating shaft 7, which extends into the water tank 5, is rotatably connected to the bottom of the inner wall of the water tank 5, and a mixing shaft 12 is arranged on the outer surface of the rotating shaft 7, which extends into the water tank 5;
the rope 9 can be driven to move by pulling the pull ring 10, and then the winding wheel 8 is driven to rotate, the rotating shaft 7 can be driven to rotate by rotating the winding wheel 8, and then the mixing shaft 12 is driven to rotate, so that a water source is stirred, and the rotating shaft 7 after rotating can be driven to rotate reversely by the resetting capacity of the resetting spring 11, so that the mixing shaft 12 rotates forwards and backwards, the stirring of a water mixture is effectively improved, the mixing uniformity is improved, and only the pull ring needs to be pulled by a worker, so that the operation is simple and the use is convenient;
a feeding nozzle 13 and a water supply pipe 14 are sequentially arranged at the top of one side of the water tank 5 from top to bottom, a water drain pipe 15 is communicated with one side of the inner wall of the movable tank 6, and the other end of the water drain pipe 15 penetrates through the stirring tank 1 and extends into the stirring tank 1;
some of the reagent can be discharged to the inside of the water tank 5 through the feed nozzle 13, a water supply source is supplied to the inside of the water tank 5 through the water supply pipe 14, and the mixed water mixture is discharged to the inside of the agitation tank 1 through the drain pipe 15.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The underwater non-dispersion quick-setting and quick-hardening cement-based composite material is characterized by comprising the following raw materials in percentage:
20 to 30 percent of cement, 5 to 10 percent of calcium aluminate, 3 to 7 percent of quartz sand, 10 to 20 percent of aggregate, 5 to 15 percent of cementing material, 0.1 to 0.5 percent of rust inhibitor, 0.5 to 2 percent of mineral admixture, 2 to 5 percent of flocculating agent, 0.3 to 0.8 percent of water reducing agent, 0.2 to 0.5 percent of expanding agent, 0.3 to 1.0 percent of non-dispersant agent, 0.1 to 0.3 percent of thickening time control agent and 10 to 12 percent of water.
2. The underwater undispersed rapid-setting and rapid-hardening cement-based composite material as claimed in claim 1, which is characterized by comprising the following raw materials in percentage by weight: 20% of cement, 5% of calcium aluminate, 4% of quartz sand, 10% of aggregate, 8% of cementing material, 0.3% of rust inhibitor, 0.7% of mineral admixture, 2% of flocculant, 0.5% of water reducing agent, 0.2% of expanding agent, 0.8% of non-dispersant, 0.2% of coagulation regulator and 10% of water.
3. The underwater nondispersive rapid setting cementitious composite as claimed in claim 1, wherein said cement is Portland Cement.
4. The underwater undispersed rapid setting cement-based composite material of claim 1, wherein the quartz sand is selected from one of: 10-30 meshes of quartz sand, 40-60 meshes of quartz sand and 70-100 meshes of quartz sand.
5. The underwater undispersed rapid-setting and rapid-hardening cement-based composite material as claimed in claim 1, wherein the aggregate is fine aggregate and coarse aggregate, and is composed of the following raw materials in percentage by weight: 40-60% of fine aggregate and 30-50% of coarse aggregate, wherein the particle size of the fine aggregate is 3-6 mm, and the particle size of the coarse aggregate is 3-6 mm.
6. The underwater undispersed rapid-setting cement-based composite material as claimed in claim 1, wherein the flocculant is composed of the following raw materials in percentage: 1.0 percent of methylcellulose, 1.0 percent of sulfamic acid water reducing agent, 0.3 percent of lignosulfonate, 1.5 percent of fly ash, 0.8 percent of zeolite powder, 0.8 percent of calcium formate, 1.0 percent of silica fume and 0.8 percent of calcium metasilicate.
7. The preparation method of the underwater non-dispersion quick-setting and quick-hardening cement-based composite material is characterized by comprising the following steps of:
s1, weighing the components: 20% of cement, 5% of calcium aluminate, 4% of quartz sand, 10% of aggregate, 8% of cementing material, 0.3% of rust inhibitor, 0.7% of mineral admixture, 2% of flocculant, 0.5% of water reducing agent, 0.2% of expanding agent, 0.8% of non-dispersant, 0.2% of coagulation regulator and 10% of water;
s2, adding the cement, the calcium aluminate, the quartz sand and the cementing material into a stirrer, and stirring and mixing the cement, the calcium aluminate, the quartz sand and the cementing material through the stirrer;
s3, placing water into a stirring barrel, placing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent into the stirring barrel, and stirring and mixing the rust inhibitor, the mineral admixture, the flocculating agent, the water reducing agent and the non-dispersing agent through the stirring barrel;
s4, putting the water mixture in the S3 into a stirrer in the S2, stirring again, adding the expanding agent and the thickening time control agent in the process of stirring again, and finally, until the material is uniformly viscous.
8. The method for preparing the underwater non-dispersive rapid-hardening cement-based composite material according to claim 7, wherein the stirring speed of the stirrer in S2 is 7000r/min for 20min, and the stirring speed of the stirring barrel in S3 is 3000r/min for 5 min.
9. The method for preparing the underwater non-dispersing rapid-setting and rapid-hardening cement-based composite material as claimed in claim 7, wherein the mixer in S4 is used for mixing at a speed of 6000r/min for 25-40 min.
10. The method for preparing the underwater non-dispersing rapid-setting cement-based composite material as claimed in claim 7, wherein the time for adding the swelling agent and the set control agent in S4 is 10-15min of stirring time.
CN202010598320.7A 2020-06-28 2020-06-28 Underwater non-dispersion quick-setting and quick-hardening cement-based composite material and preparation method thereof Pending CN111763048A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101289291A (en) * 2007-04-17 2008-10-22 中国石油集团工程技术研究院 Quick coacervation flocculant for anti-washout concrete under water
CN107010892A (en) * 2017-04-07 2017-08-04 俞家欢 It is a kind of not disperse fast hard cement-base composite material of rapid hardening and its preparation method and application under water

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101289291A (en) * 2007-04-17 2008-10-22 中国石油集团工程技术研究院 Quick coacervation flocculant for anti-washout concrete under water
CN107010892A (en) * 2017-04-07 2017-08-04 俞家欢 It is a kind of not disperse fast hard cement-base composite material of rapid hardening and its preparation method and application under water

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Application publication date: 20201013