CN106946522B - Shield synchronous grouting construction material - Google Patents
Shield synchronous grouting construction material Download PDFInfo
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- CN106946522B CN106946522B CN201710134523.9A CN201710134523A CN106946522B CN 106946522 B CN106946522 B CN 106946522B CN 201710134523 A CN201710134523 A CN 201710134523A CN 106946522 B CN106946522 B CN 106946522B
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- river sand
- construction material
- water reducing
- reducing agent
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a shield synchronous grouting construction material which comprises the following components in parts by weight: 200-300 parts of composite portland cement, 400-600 parts of fly ash, 50-80 parts of 200-mesh calcium bentonite, 1200-1300 parts of graded river sand, 0.4-0.6 part of hydroxypropyl methyl cellulose, 0.5-3 parts of a water reducing agent, 0.3-1 part of a retarder, 1-3 parts of an early strength admixture and 16-24 parts of a volume stabilizer. The invention controls the compressive strength, bleeding rate, condensation time and fluidity of the construction material by reasonably adjusting the composition and content of each component, so that the initial setting time is long, the early strength is developed quickly, the segregation is not easy, the volume stability is good, the building gap can be effectively filled, and the tunnel segment is prevented from floating and deforming; good fluidity, strong anti-dispersion, easy transportation and long-term storage.
Description
Technical Field
The invention relates to the technical field of tunnel construction materials, in particular to a shield synchronous grouting construction material.
Background
In the shield tunnel work progress, when the shield tail deviates from the shield segment that has been assembled, must cause the building space between segment lining and the soil body, the shield tail slip casting that needs to be timely this moment to prevent the not hard up of the soil body around the shield segment, strengthen the parcel effect of the soil body to shield segment lining structure simultaneously, avoid segment structure to appear local stress concentration phenomenon because of lacking necessary resistance effect. The shield tail grouting is a grouting method which is used for filling a proper amount of grouting material with certain early strength and final strength into a gap behind a shield tail under certain grouting pressure when tunnel lining segments are assembled and a tunnel is separated from the shield tail in the shield propelling construction process, and building the gap after the grouting material is solidified and hardened to fill a wall, so that certain bearing capacity is provided and the segment lining is stabilized.
The types of shield tail grouting include post grouting, synchronous grouting, timely grouting and secondary grouting, wherein the synchronous grouting is generally adopted under the condition that the control on ground settlement and the requirement on tunnel floating are strict, and the secondary grouting is used as a supplementary measure. The most synchronous grouting currently used in shield tunnel construction in China is synchronous single-liquid grouting, and the synchronous single-liquid grouting has a plurality of defects in construction: 1. the synchronous single-grouting slurry has low early strength, lacks chemical stability in the later period, is easy to separate, and cannot effectively control the upward floating of the tunnel separated from the shield tail and keep the longitudinal stability of the tunnel in the later period; 2. the single slurry is easy to separate, which causes difficulty in transportation and storage.
Disclosure of Invention
Aiming at the defects in the problems, the invention provides a shield synchronous grouting construction material.
In order to achieve the aim, the invention provides a shield synchronous grouting construction material which comprises the following components in parts by weight:
as a further improvement of the invention, the composite portland cement is 32.5# composite portland cement.
As a further improvement of the invention, the graded river sand comprises four kinds of river sand with the grain sizes of 0.1-0.2 mm, 0.2-0.5 mm, 0.5-1 mm and 1-2 mm;
the weight ratio of the river sand with the particle size of 0.1-0.2 mm, the river sand with the particle size of 0.2-0.5 mm, the river sand with the particle size of 0.5-1 mm and the river sand with the particle size of 1-2 mm is 0.3:0.25:0.3: 0.15.
In a further improvement of the present invention, the viscosity of the hydroxypropylmethylcellulose is 20000mPa · s.
As a further improvement of the invention, the water reducing agent is one or a mixture of a naphthalene water reducing agent and a polycarboxylic acid water reducing agent.
As a further improvement of the invention, the retarder is one of tartaric acid and citric acid.
As a further improvement of the invention, the early strength agent is one of calcium formate and sodium carbonate.
As a further improvement of the invention, the volume stabilizer is a concrete expanding agent and azodicarbonamide, and the weight ratio of the concrete expanding agent to the azodicarbonamide is (7.7-7.9): (0.1-0.3).
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a shield synchronous grouting construction material, which is characterized in that the compressive strength, bleeding rate, setting time and fluidity of the construction material are controlled by reasonably adjusting the composition and content of each component, so that the initial setting time is long, the early strength is fast to develop, the segregation is not easy, the volume stability is good, the building gap can be effectively filled, and the tunnel segment is prevented from floating and deforming; good fluidity, strong anti-dispersion, easy transportation and long-term storage.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In order to solve the technical problems in the prior art, the invention provides a novel concrete admixture which has the advantages of long initial setting time, quick development of early strength, difficult segregation and good volume stability; the building gap can be effectively filled, and the tunnel segment is prevented from floating upwards and deforming; good fluidity, strong anti-dispersion, easy transportation and long-term storage.
The invention provides a shield synchronous grouting construction material which comprises the following components in parts by weight:
preferably, the composite portland cement is 32.5# composite portland cement.
Preferably, the graded river sand comprises four kinds of river sand with the grain sizes of 0.1-0.2 mm, 0.2-0.5 mm, 0.5-1 mm and 1-2 mm; the weight ratio of the river sand with the particle size of 0.1-0.2 mm, the river sand with the particle size of 0.2-0.5 mm, the river sand with the particle size of 0.5-1 mm and the river sand with the particle size of 1-2 mm is 0.3:0.25:0.3: 0.15.
Preferably, the viscosity of the hydroxypropylmethylcellulose is 20000mPa · s.
Preferably, the water reducing agent is one or a mixture of a naphthalene water reducing agent and a polycarboxylic acid water reducing agent, and when the water reducing agent is a mixture of a naphthalene water reducing agent and a polycarboxylic acid water reducing agent, the naphthalene water reducing agent and the polycarboxylic acid water reducing agent can be combined in any proportion.
Preferably, the retarder is one of tartaric acid and citric acid, and the early strength agent is one of calcium formate and sodium carbonate.
Preferably, the volume stabilizer is a concrete expanding agent and azodicarbonamide, and the weight ratio of the concrete expanding agent to the azodicarbonamide is (7.7-7.9) to (0.1-0.3).
The present invention will be described in further detail with reference to specific embodiments below:
the weight (kg) of each component in each example of the present invention is shown in table 1:
TABLE 1
| Raw material | Example 1 | Example 2 | Example 3 | Example 4 |
| 32.5# composite portland cement | 200 | 300 | 250 | 250 |
| Fly ash | 600 | 400 | 500 | 500 |
| 200 meshCalcium bentonite | 80 | 50 | 70 | 70 |
| Graded river sand | 1200 | 1300 | 1240 | 1240 |
| Hydroxypropyl methylcellulose | 0.4 | 0.6 | 0.5 | 0.5 |
| Water reducing agent | 3 | 0.5 | 0.6 | 1.6 |
| Retarder | 0.3 | 1 | 0.5 | 0.5 |
| Early strength agent | 3 | 2 | 1 | 3 |
| Volume stabilizer | 16 | 24 | 20 | 20 |
| Amount of added water | 630 | 623 | 624 | 625 |
In the above embodiment, the graded river sand comprises four kinds of river sand with particle sizes of 0.1-0.2 mm, 0.2-0.5 mm, 0.5-1 mm, and 1-2 mm; the weight ratio of the river sand with the particle size of 0.1-0.2 mm, the river sand with the particle size of 0.2-0.5 mm, the river sand with the particle size of 0.5-1 mm and the river sand with the particle size of 1-2 mm is 0.3:0.25:0.3: 0.15; the viscosity of the hydroxypropylmethylcellulose was 20000 mPas. The water reducing agent in the embodiment 1 is a naphthalene water reducing agent, and the water reducing agents in the embodiments 2 and 3 are polycarboxylic acid water reducing agents; in example 4, the water reducing agent was a mixture of a naphthalene water reducing agent and a polycarboxylic acid water reducing agent, the naphthalene water reducing agent was 1.2kg, and the polycarboxylic acid water reducing agent was 0.4 kg. The retarder is one of tartaric acid and citric acid. The early strength agent is one of calcium formate and sodium carbonate. The volume stabilizer is a mixture of a concrete expanding agent and azodicarbonamide, and the ratio of the concrete expanding agent to the azodicarbonamide is 7.8: 0.2.
The preparation method of the shield synchronous grouting construction material comprises the following steps:
adding the graded river sand into a mixing device according to the weight parts corresponding to the components in the embodiments 1-4, and then adding the 32.5# composite portland cement, the fly ash, the 200-mesh calcium bentonite, the hydroxypropyl methyl cellulose, the water reducing agent, the retarder, the early strength agent and the volume stabilizer, stirring for 5 minutes, and uniformly mixing.
2000g of each shield synchronous grouting construction material of the embodiments 1-4 is taken, 600g of water is added into the shield synchronous grouting construction materials respectively, the materials are stirred uniformly in a stirrer, and then the mortar performance is tested according to a testing method specified by the standard JGJ 70-2009. The physical and chemical indexes of the mortars of the 4 examples are shown in Table 2:
TABLE 2
The shield synchronous grouting construction material provided by the invention can effectively increase the fluidity of mortar by reasonably adjusting the proportional composition of river sand. And meanwhile, the water reducing agent is added to effectively promote the flow of the mortar. The compressive strength setting time of the construction material can be controlled by adjusting the contents of the cement, the water reducing agent, the early strength agent and the coagulant, so that the initial setting time is long, the construction material can be stored for a long time, and the early strength develops quickly. The compound addition of the bentonite and the cellulose in the formula reduces the bleeding rate, has strong anti-dispersion property and is easy to transport; the expansion agent and the azodicarbonamide are added, so that the shrinkage can be reduced, the volume is increased, the volume stability is good, the building gap can be effectively filled, and the tunnel segment is prevented from floating upwards and deforming.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The shield synchronous grouting construction material is characterized by comprising the following components in parts by weight:
the graded river sand comprises four kinds of river sand with the grain sizes of 0.1-0.2 mm, 0.2-0.5 mm, 0.5-1 mm and 1-2 mm;
the weight ratio of the river sand with the particle size of 0.1-0.2 mm, the river sand with the particle size of 0.2-0.5 mm, the river sand with the particle size of 0.5-1 mm and the river sand with the particle size of 1-2 mm is 0.3:0.25:0.3: 0.15;
the composite portland cement is 32.5# composite portland cement;
the viscosity of the hydroxypropyl methylcellulose is 20000mPa s;
the water reducing agent is one or a mixture of a naphthalene water reducing agent and a polycarboxylic acid water reducing agent;
the retarder is one of tartaric acid and citric acid;
the early strength agent is one of calcium formate and sodium carbonate.
2. The shield synchronous grouting construction material of claim 1, wherein the volume stabilizer is a concrete expanding agent and azodicarbonamide, and the weight ratio of the concrete expanding agent to the azodicarbonamide is (7.7-7.9): (0.1-0.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710134523.9A CN106946522B (en) | 2017-03-08 | 2017-03-08 | Shield synchronous grouting construction material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710134523.9A CN106946522B (en) | 2017-03-08 | 2017-03-08 | Shield synchronous grouting construction material |
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| Publication Number | Publication Date |
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| CN106946522A CN106946522A (en) | 2017-07-14 |
| CN106946522B true CN106946522B (en) | 2020-04-07 |
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Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107686300A (en) * | 2017-07-24 | 2018-02-13 | 攀枝花市吉源科技有限责任公司 | Microdilatancy grout material is used in a kind of tunnel-liner filling |
| CN107512862B (en) * | 2017-08-08 | 2020-09-04 | 中交武汉港湾工程设计研究院有限公司 | Tackifier special for shield synchronous grouting material |
| CN107555868A (en) * | 2017-08-30 | 2018-01-09 | 中交武汉港湾工程设计研究院有限公司 | Mortar is filled after a kind of foundation for laid pipe |
| CN107522441A (en) * | 2017-08-31 | 2017-12-29 | 中国铁道科学研究院铁道建筑研究所 | A kind of cement composition and prepare its method |
| CN107698226A (en) * | 2017-09-06 | 2018-02-16 | 合诚工程咨询集团股份有限公司 | A kind of cement-silicate injecting paste material |
| CN107827422B (en) * | 2017-11-24 | 2020-07-17 | 中铁隧道局集团有限公司 | High-waterproof synchronous grouting slurry for submarine shield tunnel |
| CN107902994B (en) * | 2017-11-28 | 2020-10-30 | 河海大学 | Early-strength shield wall-grouting material |
| CN108298912A (en) * | 2018-03-16 | 2018-07-20 | 中铁十二局集团有限公司 | The preparation method of synchronous grouting concrete and synchronous grouting concrete |
| CN108751873A (en) * | 2018-08-13 | 2018-11-06 | 河南省建筑科学研究院有限公司 | The shield machine synchronous grouting material and preparation method thereof of fine powder is recycled containing building waste |
| CN110183189B (en) * | 2019-05-28 | 2020-05-05 | 西南交通大学 | Shield anti-water dispersion synchronous grouting slurry with controllable initial setting time and preparation method thereof |
| CN110255988A (en) * | 2019-06-10 | 2019-09-20 | 山东宏禹工程科技有限公司 | A kind of synchronous grouting material of foam improvement |
| CN110424970A (en) * | 2019-07-16 | 2019-11-08 | 安徽省交通航务工程有限公司 | A method of viaduct bridge pier formation shield tunnel is worn sticking shield side in texture stratum again |
| CN110498633B (en) * | 2019-08-14 | 2021-09-10 | 中交武汉港湾工程设计研究院有限公司 | Composite additive for shield synchronous grouting material |
| CN111305855A (en) * | 2020-02-21 | 2020-06-19 | 河海大学 | Method for manufacturing fluidized backfill by using earth pressure balance shield muck |
| CN111470817A (en) * | 2020-03-12 | 2020-07-31 | 中广核工程有限公司 | Light slurry for shield synchronous grouting |
| CN111170700B (en) * | 2020-03-12 | 2022-03-15 | 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 |
| CN112592138B (en) * | 2020-12-31 | 2022-07-12 | 中铁十局集团有限公司 | Single-component active synchronous mortar with controllable setting time and preparation method thereof |
| CN114213084B (en) * | 2021-12-31 | 2022-10-18 | 中国海洋大学 | Water-rich soft soil high-pressure large-diameter shield synchronous single-liquid grouting slurry, process and application |
| CN117602880B (en) * | 2023-10-18 | 2024-10-22 | 中流砥柱(广州)新材料有限公司 | Shield mortar |
| CN117865593B (en) * | 2023-11-29 | 2024-08-30 | 山东大学 | Green anti-dispersion synchronous grouting material for water-rich stratum and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1094044A1 (en) * | 1999-10-21 | 2001-04-25 | Compagnie Du Sol | Slurry for tight screens |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693615A (en) * | 2009-09-29 | 2010-04-14 | 武汉市商品混凝土管理站 | Sulphoaluminate cement base synchronous slip casting material and preparation method |
| CN102464463B (en) * | 2010-11-09 | 2013-12-11 | 中冶武汉冶金建筑研究院有限公司 | Compound high-performance expanding agent for cement-based material |
| CN103951335B (en) * | 2013-12-13 | 2016-05-11 | 中铁十四局集团有限公司 | Major diameter slurry shield discarded slurry recycles synchronous slip casting |
| CN105000830B (en) * | 2015-04-22 | 2018-05-22 | 南京航空航天大学 | A kind of double intumescent filler mortars |
-
2017
- 2017-03-08 CN CN201710134523.9A patent/CN106946522B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1094044A1 (en) * | 1999-10-21 | 2001-04-25 | Compagnie Du Sol | Slurry for tight screens |
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