CN111574103A - Multi-component composite synergist for sprayed concrete and preparation method thereof - Google Patents
Multi-component composite synergist for sprayed concrete and preparation method thereof Download PDFInfo
- Publication number
- CN111574103A CN111574103A CN202010382940.7A CN202010382940A CN111574103A CN 111574103 A CN111574103 A CN 111574103A CN 202010382940 A CN202010382940 A CN 202010382940A CN 111574103 A CN111574103 A CN 111574103A
- Authority
- CN
- China
- Prior art keywords
- component composite
- sprayed concrete
- agent
- composite synergist
- percent
- 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.)
- Pending
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a multi-component composite synergist for sprayed concrete and a preparation method thereof, wherein the composition comprises the following components: 20-40% of nano-silica fume, 30-50% of modified mineral powder, 10-20% of expanding agent, 0-5% of crystal nucleus early strength agent, 1-5% of fluidizing agent, 1-5% of sodium tripolyphosphate, 0.5-2% of sodium carboxymethylcellulose, 0.5-2% of sodium gluconate, 5-10% of sodium thiocyanate, 0-0.5% of polypropylene fiber and 0.05-0.2% of organic silicon defoamer. Compared with the prior art, the invention obviously improves the working performance and the pumping performance of the sprayed concrete; the rebound rate and the dust amount of the sprayed concrete are reduced; the invention has the advantages of reducing the shrinkage of sprayed concrete, improving the pore structure of the sprayed concrete, and improving the compactness, the strength and the anti-cracking performance of the sprayed concrete, thereby leading the sprayed concrete to have good durability.
Description
Technical Field
The invention belongs to the technical field of concrete, and particularly relates to a multi-component composite synergist for sprayed concrete and a preparation method thereof.
Background
The sprayed concrete is special concrete which is uniformly sprayed on a sprayed surface through the concrete transported by a pipeline under the action of high compressed air, is automatically compacted and quickly generates strength. Compared with cast-in-place concrete, the machine spraying construction has the advantages of short setting time, high early strength, convenience and quickness in construction, short construction period and cost saving, and is widely applied to projects such as tunnel lining, mine roadway support, foundation pit support and the like.
In the actual construction process, the sprayed concrete has good construction performance, proper setting time, high early strength and low rebound rate of the constructed concrete on one hand; on the one hand, the concrete has good service performance, namely high compactness and good permeability resistance. And the cost saving factor is also considered on the basis of the performance requirement. This requires that the material of the shotcrete be superior in performance to ordinary concrete.
Research shows that the permeability of concrete is an important index for measuring various media resistance of concrete, the durability of the concrete is directly determined, and the sprayed concrete is different from the molded concrete in terms of hydration products and pore structures due to the use of an accelerator and the influence of a spray forming mode, so that the permeability and the mechanical property of the sprayed concrete are different. Therefore, the pore structure inside the sprayed concrete determines the migration trajectory and speed of harmful gases and ions, and seriously influences the permeability and strength.
The mineral admixture has obvious effects on improving the anti-permeability performance of the sprayed concrete, such as silica fume, fly ash and the like, wherein silica fume is added to an invention patent 201210343040.7 'nano-scale sprayed concrete modified admixture' disclosed on 19 th in 2012, an invention patent application 201810248219.1 'a sprayed concrete admixture' disclosed on 8 th and 17 th in 2018, an invention patent application 201510968974.3 'an early strength type sprayed concrete' disclosed on 20 th in 2016 4 th and 18 th in 2018, an invention patent 201810036120.5 'a high-strength low-resilience-rate sprayed concrete and a construction process thereof', an invention patent application 201710085030.0 'a high-strength ultra-micro sprayed concrete admixture' disclosed on 27 th in 2017 th and 6 th, and an invention patent 201811330392.2 'a wet sprayed concrete nano-scale admixture and a use method thereof' disclosed on 25 th in 2019, so that the remarkable effect of reducing the resilience of the sprayed concrete is obtained; however, the shotcrete porosity, pore structure and compactness were not changed. Moreover, the nano-grade silica fume is large in usage amount and high in cost.
Disclosure of Invention
The invention aims to provide a multi-component composite synergist for sprayed concrete, which can obviously improve the working performance and the pumpability of the sprayed concrete; the rebound rate and the dust amount of the sprayed concrete are reduced; reduce the shrinkage of the sprayed concrete, improve the pore structure of the sprayed concrete and improve the compactness, the strength and the anti-cracking performance of the sprayed concrete.
The invention also aims to provide a preparation method of the multi-component composite synergist for sprayed concrete, which is simple and low in cost.
The specific technical scheme of the invention is as follows:
the invention provides a multi-component composite synergist for sprayed concrete, which comprises the following raw materials in percentage by mass:
20-40% of nano-silica fume, 30-50% of modified mineral powder, 10-20% of expanding agent, 0-5% of crystal nucleus early strength agent, 1-5% of fluidizing agent, 1-5% of sodium tripolyphosphate, 0.5-2% of sodium carboxymethylcellulose, 0.5-2% of sodium gluconate, 5-10% of sodium thiocyanate, 0-0.5% of polypropylene fiber and 0.05-0.2% of organic silicon defoamer.
The sum of the content percentages of the raw materials is 100 percent.
The multi-component composite synergist for the sprayed concrete is an ultrafine powder material with the grain diameter D90 being less than or equal to 30 mu m and continuously and compactly stacked.
The nano-scale silica fume is SiO2The content is more than or equal to 90.0 percent, and the bulk density is 600-900kg/m2The fully densified silica fume.
The modified mineral powder is obtained by carrying out ultrafine grinding on granulated blast furnace slag powder and an organic auxiliary agent.
The preparation method of the modified mineral powder comprises the following steps: the granulated blast furnace slag powder accounts for 94-97 percent by mass fraction and is hard1 to 3 percent of gypsum, 0.5 to 2 percent of polyaluminium sulfate and 1 to 3 percent of triethanolamine, and the particle size distribution D90 prepared by grinding in an ultrafine ball mill is less than or equal to 20 mu m, and the specific surface area is more than or equal to 700m2/Kg of superfine modified mineral powder.
The expanding agent is one or a combination of more of calcium oxide, calcium oxide-calcium sulphoaluminate or magnesium oxide expanding agents.
The crystal nucleus early strength agent is nano calcium silicate hydrate sol.
The fluidizing agent is polycarboxylate water reducing agent powder.
The invention provides a preparation method of a multi-component composite synergist for sprayed concrete, which comprises the following steps:
and mixing the modified mineral powder with nano-scale silica fume, an expanding agent, a crystal nucleus early strength agent, sodium tripolyphosphate, a fluidizing agent, sodium carboxymethylcellulose, sodium gluconate, sodium thiocyanate, polypropylene fibers and an organic silicon defoaming agent, and uniformly stirring to obtain the multi-component composite synergist for the sprayed concrete.
The multi-component composite synergist for the sprayed concrete, prepared by the invention, replaces cement or mineral admixture, the mixing amount is 5-15% of the mass of the cementing material, and the multi-component composite synergist, the cementing material and the aggregate are added into a stirrer together for mixing and stirring before use.
The prior art discloses a technical scheme for filling sprayed concrete pores, improving pore structure and improving compactness, and the technical scheme is excessive, and the particle size of a silica fume material belongs to the nano-scale range, so that the pore filling is too wasteful and the cost is high, so that a part of continuous and closely-stacked powder materials between silica fume and cement need to be introduced into the sprayed concrete material to obtain a more economic and scientific dense cementing material system; in addition, the material proportion of the sprayed concrete is once formed, and the porosity of the sprayed concrete is not changed obviously after the concrete is poured. However, in the disordered overlapping process of the hydration products, the sprayed concrete is difficult to be solidified compactly like common concrete, and some large pores are difficult to avoid, and the large pores need certain expansion stress to extrude shrinkage cavities. During the service period after the completion of the cast of the sprayed concrete, the volume stability is more concerned, so that the loss of the permeability resistance due to the cracking caused by the shrinkage of the sprayed concrete is avoided. In addition, the additive material for sprayed concrete can replace part of the cement consumption, improve the performance of concrete, reduce the production cost, and has great significance for realizing energy conservation and emission reduction and walking sustainable development roads in economic terms.
The multi-component composite synergist is developed from the aspects of optimizing powder gradation, improving slurry rheological property, filling pores, early strengthening crystal nucleus, micro-expansion crack resistance and the like, and can obviously improve the working performance and the pumping performance of sprayed concrete; the rebound rate and the dust amount of the sprayed concrete are reduced; the invention has the advantages of reducing the shrinkage of sprayed concrete, improving the pore structure of the sprayed concrete, and improving the compactness, the strength and the anti-cracking performance of the sprayed concrete, thereby leading the sprayed concrete to have good durability.
In particular, the advantages of the present invention over the prior art are:
1. the invention further optimizes the particle grading of the powder, and introduces superfine modified mineral powder with D90 not more than 20 μm into the blank of the particle size of the powder between the silica fume and the gelled material, thereby realizing the continuous grading of the particles of the gelled material system, improving the compactness of slurry, promoting the full hydration of the mineral powder and saving the cement consumption.
2. And introducing an expansion component, wherein the expansion component selects expansion agents with different expansion characteristics according to the actual construction environment and the structural form, so that the sprayed concrete still has certain expansion stress extrusion pores after the pouring of the sprayed concrete is finished, and the permeability resistance and the cracking resistance of the sprayed concrete are improved.
3. The multi-group differentiation composite design fully exerts the synergistic effect of each component, wherein the nano-scale silica fume, the superfine modified mineral powder and the crystal nucleus early strength agent have the effect of obviously improving the strength of concrete, and the strength grade of the concrete can be improved by adding a proper amount of silica fume; the superfine modified mineral powder is an important material for preparing high-performance concrete, wherein in the preparation process of the superfine modified mineral powder, gypsum can effectively reduce crushing resistance, improve the flowability and the grinding aid efficiency of powder, polyaluminium sulfate can improve the drying shrinkage of cement stone and the compressive strength of a cementing material, triethanolamine can improve the early compressive strength and the frost resistance of the cementing material, and the modified superfine mineral powder can effectively improve the compressive strength of the concrete, reduce the cost of the concrete, inhibit alkali-aggregate reaction, reduce hydration heat, reduce early temperature cracks of a concrete structure, improve the compactness of the concrete and improve the anti-seepage and anti-erosion capabilities; the sodium tripolyphosphate and the sodium thiocyanate are used in a matching manner, so that the early strength of the concrete can be improved, and the frost resistance of the concrete can be improved; the polycarboxylate superplasticizer powder has good dispersibility, can prevent concrete slump loss without causing obvious slow setting, exerts a high plasticizing effect under low mixing amount, has good fluidity retentivity, wide cement adaptability, obvious concrete reinforcing effect and can reduce concrete shrinkage; the sodium carboxymethyl cellulose has a lubricating effect, reduces the grinding resistance, reduces the pumping friction resistance and improves the fluidity of concrete; the sodium gluconate can obviously improve the fluidity of the concrete and promote the refinement of the concrete; the polypropylene fiber can obviously improve the strength, toughness, ductility, impact fatigue resistance and deformation modulus of concrete; the organic silicon defoaming agent is polymerized by organic silicon oil, a solvent, an emulsifier and the like, and can achieve rapid defoaming and foam inhibiting performance by using a small amount.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The preparation method of the modified mineral powder in the embodiment comprises the following steps: based on the mass components, the granulated blast furnace slag powder with the mass fraction of 94 percent, the anhydrite with the mass fraction of 3 percent, the polyaluminium sulfate with the mass fraction of 1.0 percent and the triethanolamine with the mass fraction of 2 percent are ground in an ultrafine ball mill to form particles with the particle size distribution of D90 being less than or equal to 20 mu m and the specific surface area being more than or equal to 700m2The modified mineral powder is obtained by mixing/Kg superfine powder; the expanding agent is one of calcium oxide, calcium oxide-calcium sulphoaluminate or magnesium oxide expanding agents produced by Wuhan three-source special building materials Limited liability company, or 2 and 3 of the expanding agents are combinedThe calcium-magnesium compound expanding agent is prepared; the polycarboxylate superplasticizer powder is a PM109 type superplasticizer produced by Jiangsu McAb building materials science and technology Limited company; the sodium carboxymethyl cellulose is an IVH9 type product produced by Shandong Weifang Weilite composite Co., Ltd; the polypropylene fiber is 12mm bundle-shaped monofilament polypropylene fiber produced by modern plastics Co., Ltd, Taian, Shandong; the organic silicon defoaming agent is a DQ-W086 type powder defoaming agent produced by the hundred-year macrographic chemical technology Co., Ltd; the crystal nucleus early strength agent is IVID-300(CN) produced by Shanghai Sanrui high polymer materials GmbH.
All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
A multi-component composite synergist for sprayed concrete comprises the following raw materials in percentage by mass:
40 percent of nano-scale silica fume,
30 percent of modified mineral powder,
10 percent of expanding agent calcium oxide-calcium sulphoaluminate,
4 percent of sodium tripolyphosphate,
4 percent of polycarboxylic acid water reducing agent powder,
0.9 percent of sodium carboxymethyl cellulose,
0.5 percent of sodium gluconate,
10 percent of sodium thiocyanate,
0.5 percent of polypropylene fiber,
0.1 percent of organic silicon defoamer.
The preparation method of the multi-component composite synergist for the sprayed concrete comprises the following steps:
the raw materials are put into a forced mixer to be uniformly mixed, and the multi-component composite synergist for the sprayed concrete is obtained, and is a continuous, close-packed superfine powder material with the grain diameter D90 being less than or equal to 30 mu m.
The synergist is mixed into C30 shotcrete to replace part of the concrete, and the concrete dosage is shown in Table 1 below.
Example 2
A multi-component composite synergist for sprayed concrete comprises the following raw materials in percentage by mass:
30 percent of nano-scale silica fume,
35 percent of modified mineral powder,
15 percent of expanding agent calcium oxide-calcium sulphoaluminate,
5 percent of sodium tripolyphosphate,
5 percent of polycarboxylic acid water reducing agent powder,
2 percent of sodium carboxymethyl cellulose,
1.4 percent of sodium gluconate,
6.5 percent of sodium thiocyanate,
0.1 percent of organic silicon defoamer.
The preparation method of the multi-component composite synergist for the sprayed concrete comprises the following steps:
the raw materials are put into a forced mixer to be uniformly mixed, and the multi-component composite synergist for the sprayed concrete is obtained, and is a continuous, close-packed superfine powder material with the grain diameter D90 being less than or equal to 30 mu m.
The synergist is mixed into C30 shotcrete to replace part of the concrete, and the concrete dosage is shown in Table 1 below.
Example 3
A multi-component composite synergist for sprayed concrete comprises the following raw materials in percentage by mass:
25 percent of nano-scale silica fume,
40 percent of modified mineral powder,
20 percent of expanding agent, the expanding agent is formed by compounding calcium oxide-calcium sulphoaluminate and magnesium oxide expanding agent according to the mass ratio of 1:1,
2 percent of crystal nucleus early strength agent
3 percent of sodium tripolyphosphate,
3 percent of polycarboxylic acid water reducing agent powder,
0.8 percent of sodium carboxymethyl cellulose,
0.5 percent of sodium gluconate,
5.5 percent of sodium thiocyanate,
0.2 percent of organic silicon defoaming agent.
The preparation method of the multi-component composite synergist for the sprayed concrete comprises the following steps:
the raw materials are put into a forced mixer to be uniformly mixed, and the multi-component composite synergist for the sprayed concrete is obtained, and is a continuous, close-packed superfine powder material with the grain diameter D90 being less than or equal to 30 mu m.
The synergist is mixed into C30 shotcrete to replace part of the concrete, and the concrete dosage is shown in Table 1 below.
Example 4
A multi-component composite synergist for sprayed concrete comprises the following raw materials in percentage by mass:
20 percent of nano-scale silica fume,
50 percent of modified mineral powder,
15% of expanding agent, wherein the expanding agent is formed by compounding calcium oxide-calcium sulphoaluminate and magnesium oxide expanding agent according to the mass ratio of 1: 1;
3 percent of sodium tripolyphosphate,
4 percent of polycarboxylic acid water reducing agent powder,
1 percent of sodium carboxymethyl cellulose,
1 percent of sodium gluconate,
0.1 percent of polypropylene fiber,
sodium thiocyanate 5.8%
0.1 percent of organic silicon defoamer;
the preparation method of the multi-component composite synergist for the sprayed concrete comprises the following steps:
the raw materials are put into a forced mixer to be uniformly mixed, and the multi-component composite synergist for the sprayed concrete is obtained, and is a continuous, close-packed superfine powder material with the grain diameter D90 being less than or equal to 30 mu m.
The synergist is mixed into C30 shotcrete to replace part of the concrete, and the concrete dosage is shown in Table 1 below.
The synergist prepared in examples 1-4 was used in C30 shotcrete, a control group was prepared, a water reducing agent was added to the control group, the synergist prepared in the examples of the present invention was added to the control group, and the other control groups were the same as the examples. The dosage of the synergist is 10 percent of the dosage of the substituted cement. The concrete mix ratio of the shotcrete is shown in table 1.
TABLE 1 spray concrete mix ratio: (kg/m3)
The concrete properties obtained from the above-mentioned control and examples are specifically shown in Table 2.
TABLE 2 shotcrete Properties
The data in table 2 show that: compared with a comparative example, after the synergist is added, the rebound rate of the sprayed concrete can be effectively reduced, and the strength performance, the bending toughness performance, the permeation resistance and the cracking resistance of the sprayed concrete are obviously improved.
Claims (10)
1. The multi-component composite synergist for sprayed concrete is characterized by comprising the following raw materials in percentage by mass:
20-40% of nano-silica fume, 30-50% of modified mineral powder, 10-20% of expanding agent, 0-5% of crystal nucleus early strength agent, 1-5% of fluidizing agent, 1-5% of sodium tripolyphosphate, 0.5-2% of sodium carboxymethylcellulose, 0.5-2% of sodium gluconate, 5-10% of sodium thiocyanate, 0-0.5% of polypropylene fiber and 0.05-0.2% of organic silicon defoamer.
2. The multi-component composite synergist for shotcrete according to claim 1, wherein the multi-component composite synergist for shotcrete is an ultrafine powder material having a particle size D90 of 30 μm or less, and being continuously and compactly packed.
3. The multi-component composite synergist for shotcrete according to claim 1, wherein the nano-silica fume is SiO2The content is more than or equal to 90.0 percent, and the bulk density is 600-900kg/m2The fully densified silica fume.
4. The multi-component composite synergist for shotcrete according to claim 1, wherein the modified mineral powder is a powder obtained by ultrafine grinding granulated blast furnace slag powder and an organic auxiliary agent.
5. The multi-component composite synergist for shotcrete according to claim 1 or 4, wherein the preparation method of the modified mineral powder comprises the following steps: 94-97 percent of granulated blast furnace slag powder, 1-3 percent of anhydrite, 0.5-2 percent of polyaluminium sulfate and 1-3 percent of triethanolamine by mass fraction, wherein the particle size distribution D90 prepared by grinding in an ultrafine ball mill is less than or equal to 20 mu m, the specific surface area is more than or equal to 700m2/Kg of superfine modified mineral powder.
6. The multi-component composite synergist for shotcrete according to claim 1, wherein the swelling agent is one or more of calcium oxide, calcium oxide-calcium sulphoaluminate or magnesium oxide swelling agent.
7. The multi-component composite synergist for shotcrete according to claim 1, wherein the crystal nucleus early strength agent is nano calcium silicate hydrate sol.
8. The multi-component composite synergist for shotcrete according to claim 1, wherein the fluidizing agent is a powdery polycarboxylic acid water reducing agent.
9. The multi-component composite synergist for shotcrete as claimed in claim 1, wherein the multi-component composite synergist is used for replacing cement or mineral admixture, and the amount of the admixture is 5-15% of the mass of the cementing material.
10. A method for preparing the multi-component composite synergist for shotcrete according to any one of claims 1 to 9, wherein the method comprises: and mixing the modified mineral powder with nano-scale silica fume, an expanding agent, a crystal nucleus early strength agent, sodium tripolyphosphate, a fluidizing agent, sodium carboxymethylcellulose, sodium gluconate, sodium thiocyanate, polypropylene fibers and an organic silicon defoaming agent, and uniformly stirring to obtain the multi-component composite synergist for the sprayed concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382940.7A CN111574103A (en) | 2020-05-08 | 2020-05-08 | Multi-component composite synergist for sprayed concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382940.7A CN111574103A (en) | 2020-05-08 | 2020-05-08 | Multi-component composite synergist for sprayed concrete and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111574103A true CN111574103A (en) | 2020-08-25 |
Family
ID=72120428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010382940.7A Pending CN111574103A (en) | 2020-05-08 | 2020-05-08 | Multi-component composite synergist for sprayed concrete and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111574103A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028541A (en) * | 2020-09-09 | 2020-12-04 | 江西省建筑材料工业科学研究设计院 | Concrete nano reinforcing modifier and preparation method thereof |
| CN112441760A (en) * | 2020-11-26 | 2021-03-05 | 中交武汉港湾工程设计研究院有限公司 | Composite admixture for sprayed concrete and preparation method and application thereof |
| CN113816642A (en) * | 2021-09-16 | 2021-12-21 | 中建西部建设新疆有限公司 | Silica powder-based concrete powdery synergist and preparation method and application thereof |
| CN114477843A (en) * | 2022-01-27 | 2022-05-13 | 武汉源锦建材科技有限公司 | Heat-resistant admixture for shotcrete and application thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826774A (en) * | 2012-09-17 | 2012-12-19 | 水利部交通运输部国家能源局南京水利科学研究院 | Nanoscale sprayed concrete modified-admixture |
| CN103113063A (en) * | 2013-02-08 | 2013-05-22 | 上海泛欧建筑材料有限公司 | Sprayable reinforcing material for concrete structure reinforcement and preparation method thereof |
| CN103936347A (en) * | 2014-03-18 | 2014-07-23 | 上海罗洋新材料科技有限公司 | Ultra-high performance cement-based impact wear resistant material |
| KR101455374B1 (en) * | 2013-07-08 | 2014-11-03 | (주)대우건설 | Shotcrete binder combination for reducing rebound and dust generation |
| CN105218020A (en) * | 2015-09-17 | 2016-01-06 | 南京倍立达新材料系统工程股份有限公司 | One can spray lower shrinkage GRC decoration mortar and preparation method thereof |
| CN106477987A (en) * | 2016-09-29 | 2017-03-08 | 甘肃凯帝兰建材有限公司 | Novel injection concrete |
| CN107986671A (en) * | 2017-12-08 | 2018-05-04 | 江苏苏博特新材料股份有限公司 | A kind of low rebound, anti-corrosion type gunite concrete specific complex admixture and application |
| CN108409190A (en) * | 2018-03-24 | 2018-08-17 | 徐州巨龙新材料科技有限公司 | A kind of concrete spraying additive |
| CN109265034A (en) * | 2018-11-09 | 2019-01-25 | 中国水利水电第七工程局有限公司 | A kind of wet shotcreting nanoscale admixture and its application method |
| CN110894144A (en) * | 2019-12-26 | 2020-03-20 | 陕西德和建材有限公司 | Additive special for sprayed concrete |
| CN111003980A (en) * | 2019-11-25 | 2020-04-14 | 西安五和土木工程新材料有限公司 | High-ductility waterproof anti-cracking composite mortar and mixing method and construction process thereof |
-
2020
- 2020-05-08 CN CN202010382940.7A patent/CN111574103A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826774A (en) * | 2012-09-17 | 2012-12-19 | 水利部交通运输部国家能源局南京水利科学研究院 | Nanoscale sprayed concrete modified-admixture |
| CN103113063A (en) * | 2013-02-08 | 2013-05-22 | 上海泛欧建筑材料有限公司 | Sprayable reinforcing material for concrete structure reinforcement and preparation method thereof |
| KR101455374B1 (en) * | 2013-07-08 | 2014-11-03 | (주)대우건설 | Shotcrete binder combination for reducing rebound and dust generation |
| CN103936347A (en) * | 2014-03-18 | 2014-07-23 | 上海罗洋新材料科技有限公司 | Ultra-high performance cement-based impact wear resistant material |
| CN105218020A (en) * | 2015-09-17 | 2016-01-06 | 南京倍立达新材料系统工程股份有限公司 | One can spray lower shrinkage GRC decoration mortar and preparation method thereof |
| CN106477987A (en) * | 2016-09-29 | 2017-03-08 | 甘肃凯帝兰建材有限公司 | Novel injection concrete |
| CN107986671A (en) * | 2017-12-08 | 2018-05-04 | 江苏苏博特新材料股份有限公司 | A kind of low rebound, anti-corrosion type gunite concrete specific complex admixture and application |
| CN108409190A (en) * | 2018-03-24 | 2018-08-17 | 徐州巨龙新材料科技有限公司 | A kind of concrete spraying additive |
| CN109265034A (en) * | 2018-11-09 | 2019-01-25 | 中国水利水电第七工程局有限公司 | A kind of wet shotcreting nanoscale admixture and its application method |
| CN111003980A (en) * | 2019-11-25 | 2020-04-14 | 西安五和土木工程新材料有限公司 | High-ductility waterproof anti-cracking composite mortar and mixing method and construction process thereof |
| CN110894144A (en) * | 2019-12-26 | 2020-03-20 | 陕西德和建材有限公司 | Additive special for sprayed concrete |
Non-Patent Citations (5)
| Title |
|---|
| 张伟: "《高性能水泥基材料应用技术》", 31 August 2017, 中国建材工业出版社 * |
| 施惠生 等: "《混凝土外加剂实用技术大全》", 31 January 2008, 中国建材工业出版社 * |
| 杨医博 等: "《土木工程材料 第2版》", 31 December 2016, 华南理工大学出版社 * |
| 田健: ""Keggin-Al13改性脱水相激发矿粉胶凝材料研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 石人俊 等: "《混凝土外加剂性能及应用》", 31 January 1985, 中国铁道出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028541A (en) * | 2020-09-09 | 2020-12-04 | 江西省建筑材料工业科学研究设计院 | Concrete nano reinforcing modifier and preparation method thereof |
| CN112441760A (en) * | 2020-11-26 | 2021-03-05 | 中交武汉港湾工程设计研究院有限公司 | Composite admixture for sprayed concrete and preparation method and application thereof |
| CN113816642A (en) * | 2021-09-16 | 2021-12-21 | 中建西部建设新疆有限公司 | Silica powder-based concrete powdery synergist and preparation method and application thereof |
| CN114477843A (en) * | 2022-01-27 | 2022-05-13 | 武汉源锦建材科技有限公司 | Heat-resistant admixture for shotcrete and application thereof |
| CN114477843B (en) * | 2022-01-27 | 2022-09-09 | 武汉源锦建材科技有限公司 | Heat-resistant admixture for shotcrete and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108046712B (en) | High-strength low-resilience-rate sprayed concrete and construction process thereof | |
| CN110668750B (en) | Special high-impermeability compensation shrinkage concrete for urban underground comprehensive pipe gallery and preparation method thereof | |
| CN111574103A (en) | Multi-component composite synergist for sprayed concrete and preparation method thereof | |
| CN110734257A (en) | Preparation method of high impervious concrete | |
| CN111233390A (en) | Ultrahigh-performance anti-abrasion concrete | |
| AU2021101949A4 (en) | A Kind of Green High Performance Concrete | |
| CN109279861B (en) | Self-compacting composite concrete, preparation method thereof and concrete wall brick | |
| CN111620624B (en) | Self-compacting concrete and preparation method thereof | |
| CN110734255A (en) | Low-self-contraction high-toughness cement-based composite material and preparation method thereof | |
| CN113716915A (en) | Sprayed ultrahigh-performance concrete for corrosion prevention and reinforcement | |
| CN107352924A (en) | A kind of concrete | |
| CN111393105A (en) | Full-machine-made sand high-strength super-high-rise pumping concrete and production method and application thereof | |
| CN112441760A (en) | Composite admixture for sprayed concrete and preparation method and application thereof | |
| CN110078431A (en) | Anti- isolation high-strength heat-insulating concrete of one kind and preparation method thereof | |
| CN112079600A (en) | Self-compacting concrete for pumping | |
| CN115893895A (en) | Coagulation accelerating early strength agent, preparation method thereof and concrete composition | |
| Wang et al. | Ultra-high performance concrete: Mix design, raw materials and curing regimes-A review | |
| CN111439973B (en) | Cement-based grouting material and preparation method and application thereof | |
| CN114591046A (en) | C80 high-strength high-performance machine-made sand concrete and preparation method thereof | |
| CN112125570A (en) | Admixture for shotcrete and preparation method and application thereof | |
| CN110498630B (en) | Concrete composite additive, preparation method thereof and concrete | |
| CN110759661A (en) | Recycled aggregate concrete workability improving additive | |
| CN107973555A (en) | A kind of glass fibre self-compacting concrete | |
| CN109553361A (en) | A kind of C60P12 subway concrete and preparation method thereof | |
| CN111807771A (en) | Self-compacting fair-faced concrete for special-shaped column structure 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200825 |