CN100494107C - High anti-penetration concrete mixing material for tunnel shield tube plate and its preparation method - Google Patents

High anti-penetration concrete mixing material for tunnel shield tube plate and its preparation method Download PDF

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Publication number
CN100494107C
CN100494107C CNB2007100512387A CN200710051238A CN100494107C CN 100494107 C CN100494107 C CN 100494107C CN B2007100512387 A CNB2007100512387 A CN B2007100512387A CN 200710051238 A CN200710051238 A CN 200710051238A CN 100494107 C CN100494107 C CN 100494107C
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toughner
water
toughener
resisting agent
modified polypropylene
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CNB2007100512387A
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CN101007715A (en
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胡曙光
金宇
谢先启
陈跃庆
肖龙鸽
马保国
高英力
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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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
    • C04B28/08—Slag 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a blending material and making method of shield-driven gilled tube concrete, which comprises the following parts: 25%-40% mineral slag, 40%-50% coal ash, 15%-25% wollastonite and 3%-6% functional regulating component, wherein the functional regulating component is composed of 36-40% reinforcer, 48-51% waterproofing agent and 10-15% flexibilizer.

Description

High anti-penetration concrete mixing material for tunnel shield tube plate and preparation method thereof
Technical field
The present invention relates to a kind of shield pipe-plate concrete admixture and preparation method thereof.
Background technology
Along with the development of China's urbanization, the urban traffic is also developed to the three-dimensional direction.Subterranean tunnel will play an important role to alleviating China's urban traffic blocking situation as the part of three-dimensional traffic.Subterranean tunnel requires to have good anti-permeability performance as the concrete of structural member; Shield method is again the mainstream technology of present Tunnel Engineering simultaneously, and shield pipe-plate is its most important and structural member most critical.Thereby shield pipe-plate concrete permeability resistance height, will directly influence tunnel quality and service life thereof.
For shield pipe-plate, the behave that improves the section of jurisdiction impermeability is divided into two classes: the one, at section of jurisdiction upstream face brushing water-proof material, its water-proof material is generally organic component, organic materials is better than general ceramic on waterproof effect, but be to use the organic materials shortcoming also clearly, organic materials belongs to different material systems with the concrete that constitutes the section of jurisdiction, and its interfacial effect can not be ignored; Organic materials easily wears out and WATER REPELLENT was lost efficacy in addition, makes section of jurisdiction safety service life restricted by it.Two are to use self-waterproof concrete, are purpose from waterproof to improve tunnel segment structure material body impermeability, and its technical measures one are to add swelling agent in concrete, by generating the pore texture of ettringite crystal fill concrete, improve concrete density.But the ettringite crystal volume that swelling agent generates can expand, and reduces concrete durability thereby influence concrete volume stability; Or in concrete, add water-resisting agent, water-resisting agent generally adopts inorganic materials such as villaumite water-resisting agent, water glass class water-resisting agent, the two can introduce harmful ion (sodium ion and chlorion) in concrete, improve at present concrete permeability resistance, the general technique means that adopts is singly to mix or twoly mix supplementary cementitious material (as flyash, slag, silicon ash), optimize grading of aggregate and reduce water cement ratio and realize.The core of these technique means all is to start with from improving concrete pore structure and reducing concrete interface weak area, for example flyash is as pozzolanic materials, its secondary hydration reaction can be filled the gelling hole, and its micro aggregate effect also can effectively be blocked the pore that is communicated with in the system; The Ca (OH) that slag can form with hydrated cementitious 2Reaction can be broken Ca (OH) 2Align, reduce the interface weak area; The micro-aggregate filling effect of silicon ash, crystal seed effect can significantly improve the density of gelling system and reduce Ca (OH) 2Crystalline size or the like.Shield pipe-plate is as prefabricated components, its conservation system is steam-cured, to section of jurisdiction early strength have relatively high expectations (demoulding strength is greater than 15MPa), and above-mentioned singly mixing or two assisted class gelling material of mixing, improving impervious prerequisite is volume (generally about 30%, contents of ground slag is higher for flyash), though the volume of silicon ash less (5%-8%), but the silicon ash can increase concrete early stage self-constriction, produces tiny crack.And increase the consumption that supplementary cementitious material can reduce by an aquation phase cement, influence demoulding strength.To the requirement of demoulding strength, certainly will produce restriction to the volume of secondary hydration phase in the material component.Thereby the technological line that uses traditional configuration high performance concrete prepare the high water-tight concrete of shield pipe-plate can't engineering demands.
Summary of the invention
The object of the present invention is to provide high high anti-penetration concrete mixing material for tunnel shield tube plate of a kind of impermeability and preparation method thereof, its demoulding strength can satisfy the needs that shield pipe-plate is produced.
To achieve these goals, the technical solution adopted in the present invention is: high anti-penetration concrete mixing material for tunnel shield tube plate, it is characterized in that it is prepared from by slag, flyash, silicon ash and function adjusting component raw material mix grinding, the shared mass percent of each raw material is: slag 25%-40%, flyash 40%-50%, silicon ash 15%-25%, function are regulated component 3%-6%; Wherein function adjusting component is toughener, water-resisting agent and toughner, and toughener, water-resisting agent, the shared function of toughner are regulated constituent mass per-cent and be: toughener 36-40%, water-resisting agent 48-51%, toughner 10-15%;
Described toughener is that iron nitrate, calcium sulfate form by quality 1:1-2 is composite;
Described water-resisting agent is cementitious capillary waterproofing material (pulvis);
Described toughner is assorted fibre, and assorted fibre is by composite the forming of modified polypropylene fiber of modified polypropylene fiber and the 10mm of 3mm, and the mass ratio of the modified polypropylene fiber of 3mm and the modified polypropylene fiber of 10mm is (1-2): 1.The poly-third fiberoptic fiber surface need be done modification and be handled to strengthen the bond stress of itself and gelling system.
The specific surface area of described flyash is greater than 4500cm 2/ g, performance should meet the GB1596-2005 standard code.
The preparation method of above-mentioned high anti-penetration concrete mixing material for tunnel shield tube plate is characterized in that it comprises the steps:
1) by the shared mass percent of each raw material be: slag 25%-40%, flyash 40%-50%, silicon ash 15%-25%, function are regulated component 3%-6% and are chosen slag, flyash, silicon ash and function adjusting component raw material, wherein function adjusting component is toughener, water-resisting agent and toughner, and toughener, water-resisting agent, the shared function of toughner are regulated constituent mass per-cent and be: toughener 36-40%, water-resisting agent 48-51%, toughner 10-15%;
2) in advance grey the mixing with toughner of silicon mixed thoroughly, make fiber dispersion;
3) with slag, toughener, water-resisting agent mix grinding, to specific surface area 〉=4500cm 2Add the flyash mix grinding behind the/g, it is even to add ready-formed silicon ash and toughner mix grinding again, must product.
High anti-penetration concrete mixing material for tunnel shield tube plate using method provided by the invention is in the concrete batching process, to adopt the high anti-penetration concrete mixing material for tunnel shield tube plate equivalent substitution cement of 30%-50% according to weight ratio.
Characteristics of the present invention are:
1. at the particular requirement design of shield pipe-plate, can satisfy the needs of shield pipe-plate actual production process, be embodied in: consider the mode of production of shield pipe-plate, enough demoulding strengths can be provided; At shield pipe-plate environment for use characteristics, emphasis satisfies the demand of shield pipe-plate to impermeability.
2. but the anti-permeability performance echelon realizes, it is the once filling of the micro aggregate effect of mineral admixture, secondary hydration phase hydrated product is to the filling of cementitious material system hole, cement-based penetrant type crystalline material disperses in whole system, it meets water can react generation crystal filling pore, reaches long-term impervious effect.
3. the nanometer size effect of silicon ash makes it can significantly improve concrete degree of compactness, thereby improve concrete impermeability, but the silicon ash has reduced the cohesiveness of system, in the hydration reaction process, can bring tiny crack, the rapid passage of moisture content and harmful ion is provided, toughner is mixed the adding of fiber again, can the refinement crackle, play compensating action.
4. described function is regulated component, can realize function separately, can mutually promote again.Toughener uses iron nitrate, the Ca (OH) that can generate with hydrated cementitious 2Reaction promotes early stage hydration reaction process; Its reaction product ferric hydroxide colloid of while can seal pore and reach impervious effect, has improved impermeability.The cement-base infiltration crystallization type material can play the katalysis to hydrated cementitious, also can quicken the early hydration process.The toughner fiber not only can reduce the tiny crack that system hydration reaction volume change is brought, through surface-treated fiber, owing to strengthen with the bond stress of gelling system, can reduce because the gelling material overall porosity that interfacial effect is brought increases, improved impermeability.
In the prior art, Chinese patent 02137419.8 adopts slag micropowder 60%-80%, flyash 10%-30%, silicon ash 0-15%, auxiliary agent 1%-5% to prepare admixture specially for high-performance marine concrete, the difference of the present invention and patent 02137419.8 is: the present invention and its difference to some extent on the composition of mineral admixture, used flyash specific surface area is greater than 4500cm 2/ g only needs uniform mixing to get final product; Most important difference is that function regulates component (corresponding to this patent auxiliary agent), and the present invention does not need grinding aid in process of production, and the technology that improves demoulding strength is the Ca (OH) that relies on iron nitrate and hydrated cementitious generation in the enhancer component 2Reaction, accelerate the aquation process by the consumption reaction product: simultaneously the sulfate radical in another component calcium sulfate can with the C in the cement 3A provides early strength in conjunction with forming AFt.The present invention and this patent some important difference in addition are, although all rely on the hole in the secondary hydration product filling cementitious material system, but the cement-base infiltration crystallization type material chance water that function of the present invention is regulated in the component can react, and generates the crystal filling pore, reaches long-term impervious effect.And shield pipe-plate should not ftracture to impervious performance demands section of jurisdiction material, and the toughner that uses in the function adjusting component can better satisfy this requirement.The present invention is that the shield pipe-plate material is designed specially, has stronger specific aim than Chinese patent 02137419.8.
Description of drawings
Fig. 1 is preparation technology's schema of high anti-penetration concrete mixing material for tunnel shield tube plate of the present invention.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1-2:
1, the preparation method of high anti-penetration concrete mixing material for tunnel shield tube plate, it comprises the steps:
1), the raw material ratio by table 1 is mixed with this adulterant:
Each constituent mass percentage ratio of table 1 adulterant
Embodiment Slag micropowder Flyash The silicon ash Iron nitrate Calcium sulfate The cement-base infiltration crystallization type powder Assorted fibre
1 32％ 48％ 15.5％ 0.75％ 1％ 2.25％ 0.5％
2 27％ 42％ 25％ 0.75％ 1.5％ 2.95％ 0.8％
Assorted fibre is that the modified polypropylene fiber of the modified polypropylene fiber of 3mm and 10mm is composite with the 2:1 ratio, and employed polypropylene fibre surface needs to handle through modification.Iron nitrate and calcium sulfate use technical pure chemistry product.
2), silicon ash and assorted fibre are added mix in the stirrer in proportion, assorted fibre needs to add after manual the dispersion again, utilizes the little characteristics of silicon ash particle that fiber is uniformly dispersed as far as possible.
3), with slag micropowder, iron nitrate, calcium sulfate, cement-base infiltration crystallization type powder mix grinding in proportion, add flyash again and mix, to specific surface area greater than 4500cm 2/ g, the silicon that will mix in advance again ash and assorted fibre add mix grinding evenly (Fig. 1 is seen in its detailed technical process), get product.
2, the performance test of high anti-penetration concrete mixing material for tunnel shield tube plate:
With the high anti-penetration concrete mixing material for tunnel shield tube plate for preparing in 30% ratio equivalent substitution cement, according to " standard for test methods of mechanical properties of ordinary concrete " (GB/T50081-2002) and Chinese building association's standard (CCES2004-01) moulding 100 * 100 * 100mm sample test; According to U.S. ASTM C1202 standard moulding Φ 100 * 200mm sample, cooperate when test result such as table 2.Be comparative illustration, adopt the plain cement sample to carry out simultaneous test.Conservation system and prefabricated pipe section production adopt system consistent, i.e. steam-cured 11h after the moulding, and water is supported to 7d then, and mark is supported to 28d again.
Each assembly of table 2 is test result when
Numbering Cement HIS embodiment 1 HIS embodiment 2 Sand Stone Water Demoulding strength D eff(×10 -13m 2/s) The coulomb amount
1 540 0 0 676 1013 162 35.0 14.3 721
2 378 162 0 676 1013 162 28.0 4.47 137
3 378 0 162 676 1013 162 22.3 0.91 25
Annotate: HIS is a high anti-penetration concrete mixing material for tunnel shield tube plate.
By test result as can be known, although demoulding strength decreases, but still can satisfy the needs that shield pipe-plate is produced, its chloride diffusion coefficient and displacement flux all significantly reduce, and illustrate that high anti-penetration concrete mixing material for tunnel shield tube plate has improved concrete impermeability.
Be the impervious effect of echelon of explanation high anti-penetration concrete mixing material for tunnel shield tube plate, to experimental group (numbering) 2 carried out after the demoulding, the test of the chloride diffusion coefficient in 14d length of time, 28d length of time, and contrast with experimental group 1.Test result sees Table 3.
The chloride diffusion coefficient test result in table 3 different length of times
Experimental result shows, during the demoulding because the minimizing of an aquation phase, its chloride diffusion coefficient value of sample of using high anti-penetration concrete mixing material for tunnel shield tube plate is also greater than the plain cement sample, structure this moment complete densification also only relies on the physics of mineral admixture to fill still deficiency so that concrete has high impermeability.Behind the aquation 14d, the feasible chloride diffusion coefficient value of the sample of high anti-penetration concrete mixing material for tunnel shield tube plate of using of secondary hydration significantly reduces, and has been lower than the test value of contrast plain cement sample 28d this moment.When hydration age during to 28d, the chloride diffusion coefficient of high anti-penetration concrete mixing material for tunnel shield tube plate is far below plain cement, illustrates that this high anti-penetration concrete mixing material for tunnel shield tube plate can realize impervious for a long time.And wherein the water-resisting agent of function adjusting component also has the reaction of the water of chance, can seal some possible penetrating passages, has certain self-repair function.
Embodiment 3:
High anti-penetration concrete mixing material for tunnel shield tube plate, it is mainly regulated the component raw material mix grinding by slag, flyash, silicon ash and function and is prepared from, and the shared mass percent of each raw material is: slag 25%, flyash 47%, silicon ash 25%, function are regulated component 3%; Wherein function adjusting component is toughener, water-resisting agent and toughner, and toughener, water-resisting agent, the shared function of toughner are regulated constituent mass per-cent and be: toughener 36%, water-resisting agent 51%, toughner 13%.
Described toughener is that iron nitrate, calcium sulfate form by quality 1:1 is composite.Described water-resisting agent is cementitious capillary waterproofing material (pulvis).Described toughner is assorted fibre, and assorted fibre is by composite the forming of modified polypropylene fiber of modified polypropylene fiber and the 10mm of 3mm, and the mass ratio of the modified polypropylene fiber of 3mm and the modified polypropylene fiber of 10mm is 1:1.The poly-third fiberoptic fiber surface need be done modification and be handled to strengthen the bond stress of itself and gelling system.The specific surface area of described flyash is greater than 4500cm 2/ g, performance should meet the GB1596-2005 standard code.
The preparation method of above-mentioned high anti-penetration concrete mixing material for tunnel shield tube plate, it comprises the steps:
1) chooses each raw material by each proportioning raw materials;
2) in advance grey the mixing with toughner of silicon mixed thoroughly, make fiber dispersion.
3) with slag, toughener, water-resisting agent mix grinding, to specific surface area 〉=4500cm 2Add the flyash mix grinding behind the/g, it is even to add ready-formed silicon ash and toughner mix grinding again, must product.
Embodiment 4:
High anti-penetration concrete mixing material for tunnel shield tube plate, it is mainly regulated the component raw material mix grinding by slag, flyash, silicon ash and function and is prepared from, and the shared mass percent of each raw material is: slag 40%, flyash 40%, silicon ash 15%, function are regulated component 5%; Wherein function adjusting component is toughener, water-resisting agent and toughner, and toughener, water-resisting agent, the shared function of toughner are regulated constituent mass per-cent and be: toughener 40%, water-resisting agent 48%, toughner 12%.
Described toughener is that iron nitrate, calcium sulfate form by quality 1:2 is composite.Described water-resisting agent is cementitious capillary waterproofing material (pulvis).Described toughner is assorted fibre, and assorted fibre is by composite the forming of modified polypropylene fiber of modified polypropylene fiber and the 10mm of 3mm, and the mass ratio of the modified polypropylene fiber of 3mm and the modified polypropylene fiber of 10mm is 2:1.The poly-third fiberoptic fiber surface need be done modification and be handled to strengthen the bond stress of itself and gelling system.The specific surface area of described flyash is greater than 4500cm 2/ g, performance should meet the GB1596-2005 standard code.
The preparation method of above-mentioned high anti-penetration concrete mixing material for tunnel shield tube plate, it comprises the steps:
1) chooses each raw material by each proportioning raw materials;
2) in advance grey the mixing with toughner of silicon mixed thoroughly, make fiber dispersion;
3) with slag, toughener, water-resisting agent mix grinding, to specific surface area 〉=4500cm 2Add the flyash mix grinding behind the/g, it is even to add ready-formed silicon ash and toughner mix grinding again, must product.
Embodiment 5:
High anti-penetration concrete mixing material for tunnel shield tube plate, it is characterized in that it mainly is prepared from by slag, flyash, silicon ash and function adjusting component raw material mix grinding, the shared mass percent of each raw material is: slag 29%, flyash 50%, silicon ash 15%, function are regulated component 6%; Wherein function adjusting component is toughener, water-resisting agent and toughner, and toughener, water-resisting agent, the shared function of toughner are regulated constituent mass per-cent and be: toughener 36%, water-resisting agent 49%, toughner 15%.
Described toughener is that iron nitrate, calcium sulfate form by quality 1:1.5 is composite.Described water-resisting agent is cementitious capillary waterproofing material (pulvis).Described toughner is assorted fibre, and assorted fibre is by composite the forming of modified polypropylene fiber of modified polypropylene fiber and the 10mm of 3mm, and the mass ratio of the modified polypropylene fiber of 3mm and the modified polypropylene fiber of 10mm is 1.5:1.The poly-third fiberoptic fiber surface need be done modification and be handled to strengthen the bond stress of itself and gelling system.The specific surface area of described flyash is greater than 4500cm 2/ g, performance should meet the GB1596-2005 standard code.
The preparation method of above-mentioned high anti-penetration concrete mixing material for tunnel shield tube plate is characterized in that it comprises the steps:
1) chooses each raw material by each proportioning raw materials;
2) in advance grey the mixing with toughner of silicon mixed thoroughly, make fiber dispersion;
3) with slag, toughener, water-resisting agent mix grinding, to specific surface area 〉=4500cm 2Add the flyash mix grinding behind the/g, it is even to add ready-formed silicon ash and toughner mix grinding again, must product.

Claims (3)

1. high anti-penetration concrete mixing material for tunnel shield tube plate, it is characterized in that it is prepared from by slag, flyash, silicon ash and function adjusting component raw material mix grinding, the shared mass percent of each raw material is: slag 25%-40%, flyash 40%-50%, silicon ash 15%-25%, function are regulated component 3%-6%; Wherein function adjusting component is toughener, water-resisting agent and toughner, and toughener, water-resisting agent, the shared function of toughner are regulated constituent mass per-cent and be: toughener 36-40%, water-resisting agent 48-51%, toughner 10-15%,
Described toughener is that iron nitrate, calcium sulfate form by quality 1:1-2 is composite;
Described water-resisting agent is a cementitious capillary waterproofing material;
Described toughner is assorted fibre, and assorted fibre is by composite the forming of modified polypropylene fiber of modified polypropylene fiber and the 10mm of 3mm, and the mass ratio of the modified polypropylene fiber of 3mm and the modified polypropylene fiber of 10mm is (1-2): 1.
2. high anti-penetration concrete mixing material for tunnel shield tube plate according to claim 1 is characterized in that: the specific surface area of described flyash is greater than 4500cm 2/ g.
3. the preparation method of high anti-penetration concrete mixing material for tunnel shield tube plate as claimed in claim 1 is characterized in that it comprises the steps:
1) by the shared mass percent of each raw material be: slag 25%-40%, flyash 40%-50%, silicon ash 15%-25%, function are regulated component 3%-6% and are chosen slag, flyash, silicon ash and function adjusting component raw material, wherein function adjusting component is toughener, water-resisting agent and toughner, and toughener, water-resisting agent, the shared function of toughner are regulated constituent mass per-cent and be: toughener 36-40%, water-resisting agent 48-51%, toughner 10-15%;
Described toughener is that iron nitrate, calcium sulfate form by quality 1:1-2 is composite;
Described water-resisting agent is a cementitious capillary waterproofing material;
Described toughner is assorted fibre, and assorted fibre is by composite the forming of modified polypropylene fiber of modified polypropylene fiber and the 10mm of 3mm, and the mass ratio of the modified polypropylene fiber of 3mm and the modified polypropylene fiber of 10mm is (1-2): 1;
2) in advance grey the mixing with toughner of silicon mixed thoroughly;
3) with slag, toughener, water-resisting agent mix grinding, to specific surface area 〉=4500cm 2Add the flyash mix grinding behind the/g, it is even to add ready-formed silicon ash and toughner mix grinding again, must product.
CNB2007100512387A 2007-01-09 2007-01-09 High anti-penetration concrete mixing material for tunnel shield tube plate and its preparation method Expired - Fee Related CN100494107C (en)

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CN101851082B (en) * 2010-05-20 2012-07-25 同济大学 Single liquid type hardenable slurry for backfill grouting in tunnel shield construction
CN102329094B (en) * 2010-06-21 2012-12-12 林晓琴 Nano/inorganic composite material and preparation method thereof
CN103527216A (en) * 2013-09-25 2014-01-22 暨南大学 High performance fiber concrete suitable for metro segment with large diameter and application of high performance fiber concrete
CN105041336B (en) * 2015-07-06 2018-07-03 中国建筑股份有限公司 A kind of very-high performance hybrid fiber concrete shield duct piece and preparation method thereof
CN108793805B (en) * 2018-08-30 2020-11-03 江苏金木土科技有限公司 Concrete admixture formula of steam-curing-free high-impermeability shield segment and curing process thereof
CN114293602A (en) * 2021-11-08 2022-04-08 浙江绿城房屋服务系统有限公司 Basement structure bottom plate leakage plugging repair method

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