CN117602880B - Shield mortar - Google Patents
Shield mortar Download PDFInfo
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- CN117602880B CN117602880B CN202311350788.4A CN202311350788A CN117602880B CN 117602880 B CN117602880 B CN 117602880B CN 202311350788 A CN202311350788 A CN 202311350788A CN 117602880 B CN117602880 B CN 117602880B
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- parts
- slurry
- expanding agent
- water
- mortar
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- 239000004576 sand Substances 0.000 claims abstract description 42
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 claims abstract description 25
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 22
- 239000010883 coal ash Substances 0.000 claims abstract description 21
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 19
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 19
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000440 bentonite Substances 0.000 claims abstract description 18
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 18
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 18
- 239000004156 Azodicarbonamide Substances 0.000 claims description 4
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 4
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 4
- 239000002002 slurry Substances 0.000 abstract description 33
- 238000007596 consolidation process Methods 0.000 abstract description 17
- 230000000740 bleeding effect Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 9
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The application provides shield mortar, which comprises the following components in parts by weight: 2000 parts of a base component, 780 parts of water and 0.4-1.6 parts of an expanding agent; the basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 599.4-601.4 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose. The expanding agent is a plastic expanding agent. Compared with shield mortar of other manufacturers, the scheme has the advantages of obviously increased water-cement ratio, low slurry yield, effectively reduced material cost of projects under the condition of using the same product, and energy conservation and emission reduction in response. Under the condition of ensuring the slurry yield, the bleeding rate of the mortar is reduced, and the consolidation rate of the finished product is improved. The consolidation rate is higher than 100%, which is obviously higher than 94-96% in the market, and the secondary grouting workload of the project is effectively reduced. By adopting reasonable grading interval compatibility, the materials are reasonably arranged according to the grading interval, the compactness state of the slurry is greatly improved, and the pumping performance of the slurry and the strength of the formed slurry are effectively improved.
Description
Technical Field
The application relates to the technical field of construction materials, in particular to shield mortar.
Background
With the development of urban, highway and tunnel engineering and the continuous perfection of technology, auxiliary materials matched with the technology are also continuously standardized and standardized. The shield mortar is widely applied to tunnel engineering and mainly has the effects of filling gaps between tunnel segments and soil bodies, stabilizing the segments, plugging groundwater, controlling stratum deformation and reducing sedimentation. The shield mortar in the existing market is generally prepared by compounding cement, sand and coal ash simply.
1. At present, the shield mortar industry is influenced by raw material fluctuation by adjusting the proportion of sand and cement, so that the mortar slurry has poor pumpability and unstable slurry state, and the pipe is blocked and is not compact after molding.
2. The shield mortar is mainly injected by the pressure of the grouting pipe, and the technical requirements for the slurry are that the slurry flow state is good and the slurry yield is low. In order to meet the technical requirements of projects, the water-cement ratio needs to be regulated by a formula, so that the bleeding rate of slurry is increased, the shrinkage phenomenon after the condensation of a finished product is indirectly influenced, the consolidation rate is far less than 100%, the secondary grouting of the projects is needed, and the cost of the projects is relatively increased.
Therefore, how to maintain the stability and uniformity of the slurry under the condition of high water-gel ratio; on the premise of ensuring the slurry yield, the problem of shrinkage of the slurry after solidification is solved, and the requirement of the consolidation rate of 100% is met, so that the problem to be solved is urgent.
Disclosure of Invention
The embodiment of the application provides shield mortar for solving the problems of the related technology, and the technical scheme is as follows:
the embodiment of the application provides shield mortar, which comprises the following components in parts by weight: 2000 parts of a base component, 780 parts of water and 0.4-1.6 parts of an expanding agent;
the basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 599.4-601.4 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 0.4 part of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 0.6 part of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 0.8 part of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 1.2 parts of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: the preparation method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 1.6 parts of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the expansion agent is a plastic expansion agent.
In one embodiment, the swelling agent is azodicarbonamide.
The advantages or beneficial effects in the technical scheme at least comprise:
1. compared with shield mortar of other manufacturers, the scheme has the advantages of obviously increased water-cement ratio, low slurry yield, effectively reduced material cost of projects under the condition of using the same product, and energy conservation and emission reduction in response.
2. Under the condition of ensuring the slurry yield, the bleeding rate of the mortar is reduced, and the consolidation rate of the finished product is improved. The consolidation rate is higher than 100%, which is obviously higher than 94-96% in the market, and the secondary grouting workload of the project is effectively reduced.
3. By adopting reasonable grading interval compatibility, the materials are reasonably arranged according to the grading interval, the compactness state of the slurry is greatly improved, and the pumping performance of the slurry and the strength of the formed slurry are effectively improved.
4. The dry powder grading proportion of the shield mortar is optimized. The compatibility of coarse sand, fine sand, heavy calcium and coal ash can achieve the optimization of gradation, so that the slurry performance is stable.
5. The expansion agent is added, so that the expansion amount can be effectively provided under the condition of maintaining the performance of the slurry, and the micro-expansion effect of the product can be ensured after the test piece is molded, so that the consolidation rate can reach over 100 percent.
6. The addition of the polymer active ingredient hydroxypropyl methylcellulose obviously improves the bleeding rate of slurry under the condition of high water-to-gel ratio.
The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will become readily apparent by reference to the following detailed description.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present application. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.
The embodiment of the application provides shield mortar, which comprises the following components in parts by weight: 2000 parts of a base component, 780 parts of water and 0.4-1.6 parts of an expanding agent;
the basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 599.4-601.4 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 0.4 part of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 0.6 part of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 0.8 part of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the method comprises the following steps of: 2000 parts of a base component, 780 parts of water and 1.2 parts of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
In one embodiment, the expansion agent is a plastic expansion agent.
In one embodiment, the swelling agent is azodicarbonamide.
By chemical mechanism of the plastic expanding agent, the plastic expanding agent slowly reacts with water under alkaline condition to generate tiny bubbles, so that the plastic expanding agent has an expansion effect before the cement mixture is coagulated.
Example 1
The shield mortar without the expansion component comprises 240g of cement, 200g of bentonite, 280.6g of coarse sand, 420.8g of fine sand, 600.2g of heavy calcium carbonate, 257.2g of coal ash and 1.2g of hydroxypropyl methyl cellulose.
Example 2
The shield mortar without the expansion component comprises 240g of cement, 200g of bentonite, 280.6g of coarse sand, 420.8g of fine sand, 601.4g of heavy calcium carbonate and 257.2g of coal ash.
Comparative example 1
The shield mortar of this example comprises 2000g of the shield mortar of example 1 without the expansive component, 0.4g of the expanding agent, and 780g of water.
Comparative example 2
The shield mortar of this example comprises 2000g of the shield mortar of example 1 without the expansive component, 0.6g of the expanding agent, and 780g of water.
Comparative example 3
The shield mortar of this example comprises 2000g of the shield mortar of example 1 without the expansive component, 0.8g of the expanding agent, and 780g of water.
Comparative example 4
The shield mortar of this example comprises 2000g of the shield mortar of example 1 without the expansive component, 1.2g of the expanding agent, and 780g of water.
Comparative example 5
The shield mortar of this example comprises 2000g of the shield mortar of example 1 without the expansive component, 1.6g of the expanding agent, and 780g of water.
Comparative example 6
The shield mortar of this example comprises 2000g of the shield mortar of example 2 without the expansive component, 0.4g of the expanding agent, and 780g of water.
Comparative example 7
The shield mortar of this example comprises 2000g of the shield mortar of example 2 without the expansive component, 0.6g of the expanding agent, and 780g of water.
Comparative example 8
The shield mortar of this example comprises 2000g of the shield mortar of example 2 without the expansive component, 0.8g of the expanding agent, and 780g of water.
Comparative example 9
The shield mortar of this example comprises 2000g of the shield mortar of example 2 without the expansive component, 1.2g of the expanding agent, and 780g of water.
Comparative example 10
The shield mortar of this example comprises 2000g of the shield mortar of example 2 without the expansive component, 1.6g of the expanding agent, and 780g of water.
The swelling agent used in all examples and comparative examples was azodicarbonamide.
The shield mortars obtained in the above examples 1 to 5 and comparative examples 1 to 5 were subjected to a bleeding test, a fluidity test, a strength test, and a consolidation rate test, respectively, and the test and comparative results were shown in the following tables, respectively:
From the data of comparative examples 1 to 10, analysis revealed that, without adding a water-retaining component (hydroxypropyl methylcellulose), such as: in example 2 and comparative examples 6-10, the bleeding rate averaged 2.4%; when incorporating a water-retaining component (hydroxypropyl methylcellulose), such as: in example 1 and comparative examples 1 to 5, the bleeding rate was 1.3%; after the comparison analysis, the bleeding rate of the slurry is obviously reduced after the water-retaining component (hydroxypropyl methylcellulose) is added.
Through experiments from the proportion 1 to the comparative example 10, through data comparison analysis, in the examples 1 to 2, when no expanding agent component is added, the average value of the overall consolidation rate is 95%, while in the comparative example, the consolidation rate is 95% when 0.4 is added to the expanding agent, 98% when 0.6 is added, 104% when 0.8 is added, 107% when 1.2 is added, 111% when 1.6 is added, and the formulas added with and not added with the expanding agent are tested on other indexes except the consolidation rate change, so that the indirect analysis can also obtain that the other technical indexes are not influenced when the expanding agent is added.
The conclusion is that: in the formulation with proper amount of expanding agent, the consolidation rate is far higher than that of the formulation without expanding agent.
For the confirmed plastic expanding agent mixing amount, the same proportion is repeatedly measured for three times to obtain the consolidation rate of 102%,103% and 102% respectively, the average value is 102%, and the mixing amount of 0.04% has no influence on the performance of the slurry, and each item of data of the slurry is excellent, so that the requirement of 100% of the shield mortar consolidation rate can be met by adding 0.04% of the expanding agent, and the aims of reducing the cost and enhancing the efficiency can be fulfilled.
The advantages or beneficial effects in the technical scheme at least comprise:
1. compared with shield mortar of other manufacturers, the scheme has the advantages of obviously increased water-cement ratio, low slurry yield, effectively reduced material cost of projects under the condition of using the same product, and energy conservation and emission reduction in response.
2. Under the condition of ensuring the slurry yield, the bleeding rate of the mortar is reduced, and the consolidation rate of the finished product is improved. The consolidation rate is higher than 100%, which is obviously higher than 94-96% in the market, and the secondary grouting workload of the project is effectively reduced.
3. By adopting reasonable grading interval compatibility, the materials are reasonably arranged according to the grading interval, the compactness state of the slurry is greatly improved, and the pumping performance of the slurry and the strength of the formed slurry are effectively improved.
4. The dry powder grading proportion of the shield mortar is optimized. The compatibility of coarse sand, fine sand, heavy calcium and coal ash can achieve the optimization of gradation, so that the slurry performance is stable.
5. The expansion agent is added, so that the expansion amount can be effectively provided under the condition of maintaining the performance of the slurry, and the micro-expansion effect of the product can be ensured after the test piece is molded, so that the consolidation rate can reach over 100 percent.
6. The addition of the polymer active ingredient hydroxypropyl methylcellulose obviously improves the bleeding rate of slurry under the condition of high water-to-gel ratio.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (4)
1. The shield mortar is characterized by comprising 2000 parts of basic components, 780 parts of water and 0.8-1.6 parts of expanding agent in parts by weight; the expanding agent is azodicarbonamide;
Wherein the basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 599.4-601.4 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
2. The shield mortar according to claim 1, which consists of 2000 parts by mass of a base component, 780 parts by mass of water and 0.8 part by mass of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
3. The shield mortar according to claim 1, which consists of 2000 parts by mass of a base component, 780 parts by mass of water and 1.2 parts by mass of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
4. The shield mortar according to claim 1, which consists of 2000 parts by mass of a base component, 780 parts by mass of water and 1.6 parts by mass of an expanding agent;
The basic components comprise 240 parts of cement, 200 parts of bentonite, 280.6 parts of coarse sand, 420.8 parts of fine sand, 600.2 parts of heavy calcium carbonate, 257.2 parts of coal ash and 1.2 parts of hydroxypropyl methyl cellulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311350788.4A CN117602880B (en) | 2023-10-18 | 2023-10-18 | Shield mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311350788.4A CN117602880B (en) | 2023-10-18 | 2023-10-18 | Shield mortar |
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| CN117602880A CN117602880A (en) | 2024-02-27 |
| CN117602880B true CN117602880B (en) | 2024-10-22 |
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| CN202311350788.4A Active CN117602880B (en) | 2023-10-18 | 2023-10-18 | Shield mortar |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170700A (en) * | 2020-03-12 | 2020-05-19 | 广东龙湖科技股份有限公司 | Uniform non-bleeding micro-expansion shield synchronous grouting material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180052969A (en) * | 2016-11-11 | 2018-05-21 | 대호산업개발(주) | Expandable mortar composition for civil engineering works |
| CN106946522B (en) * | 2017-03-08 | 2020-04-07 | 北京艺高世纪科技股份有限公司 | Shield synchronous grouting construction material |
| CN107459281B (en) * | 2017-08-16 | 2019-09-24 | 山东大学 | A kind of shield high performance synchronous slip casting modifying agent and the preparation method and application thereof |
| KR101919838B1 (en) * | 2018-07-05 | 2018-11-19 | (주)동인개발 | Composition for tunnel reinforcement grouting |
| CN109809771A (en) * | 2019-03-26 | 2019-05-28 | 江苏蓝圈新材料股份有限公司 | A kind of shield synchronization slip casting |
| CN110304880A (en) * | 2019-05-28 | 2019-10-08 | 西南交通大学 | The modified shield water resistant dispersion simultaneous grouting slurry of sodium bentonite and preparation method |
| CN111997640A (en) * | 2020-08-31 | 2020-11-27 | 南京睿盾工程科技有限公司 | Large-diameter shield rapid tunneling construction method |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170700A (en) * | 2020-03-12 | 2020-05-19 | 广东龙湖科技股份有限公司 | Uniform non-bleeding micro-expansion shield synchronous grouting material and preparation method thereof |
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