CN116514490A - Waterproof concrete for river-crossing tunnel - Google Patents
Waterproof concrete for river-crossing tunnel Download PDFInfo
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- CN116514490A CN116514490A CN202310522994.2A CN202310522994A CN116514490A CN 116514490 A CN116514490 A CN 116514490A CN 202310522994 A CN202310522994 A CN 202310522994A CN 116514490 A CN116514490 A CN 116514490A
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- river
- waterproof concrete
- crossing tunnel
- coupling agent
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- 239000004567 concrete Substances 0.000 title claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000835 fiber Substances 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 34
- 239000010426 asphalt Substances 0.000 claims abstract description 30
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 23
- 239000002699 waste material Substances 0.000 claims abstract description 20
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 19
- 229940104869 fluorosilicate Drugs 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 235000013162 Cocos nucifera Nutrition 0.000 claims abstract description 18
- 244000060011 Cocos nucifera Species 0.000 claims abstract description 18
- 239000010881 fly ash Substances 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 17
- 239000007822 coupling agent Substances 0.000 claims abstract description 17
- 239000004576 sand Substances 0.000 claims abstract description 17
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 17
- 239000004575 stone Substances 0.000 claims abstract description 17
- 239000004593 Epoxy Substances 0.000 claims abstract description 13
- JCUYNPHEESTECG-UHFFFAOYSA-N 3-amino-6-(4-aminophenyl)benzene-1,2-disulfonic acid Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C(S(O)(=O)=O)=C1S(O)(=O)=O JCUYNPHEESTECG-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 23
- 239000003054 catalyst Substances 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 21
- 238000002360 preparation method Methods 0.000 claims description 19
- ROHTVIURAJBDES-UHFFFAOYSA-N 2-n,2-n-bis(prop-2-enyl)-1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(N(CC=C)CC=C)=N1 ROHTVIURAJBDES-UHFFFAOYSA-N 0.000 claims description 15
- BUEPLEYBAVCXJE-UHFFFAOYSA-N [ethenyl-methyl-(trimethylsilylamino)silyl]ethene Chemical compound C(=C)[Si](N[Si](C)(C)C)(C=C)C BUEPLEYBAVCXJE-UHFFFAOYSA-N 0.000 claims description 15
- 239000011294 coal tar pitch Substances 0.000 claims description 14
- 239000011261 inert gas Substances 0.000 claims description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- -1 sodium fluorosilicate Chemical compound 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 8
- 239000011398 Portland cement Substances 0.000 claims description 7
- 239000000084 colloidal system Substances 0.000 claims description 7
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 229920005646 polycarboxylate Polymers 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052754 neon Inorganic materials 0.000 claims description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004566 building material Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 6
- 239000012188 paraffin wax Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000005489 p-toluenesulfonic acid group Chemical group 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- UMVBXBACMIOFDO-UHFFFAOYSA-N [N].[Si] Chemical group [N].[Si] UMVBXBACMIOFDO-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000005619 boric acid group Chemical group 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011300 coal pitch Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/46—Rock wool ; Ceramic or silicate fibres
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/146—Silica fume
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/248—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork from specific plants, e.g. hemp fibres
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/12—Acids or salts thereof containing halogen in the anion
- C04B22/126—Fluorine compounds, e.g. silico-fluorine compounds
-
- 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
- C04B24/16—Sulfur-containing compounds
- C04B24/20—Sulfonated aromatic compounds
-
- 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
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2688—Copolymers containing at least three different monomers
-
- 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
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
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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
- C04B2111/00474—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
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Botany (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses waterproof concrete for a river-crossing tunnel, which relates to the technical field of building materials and comprises the following raw materials in parts by weight: 95-115 parts of cement, 80-90 parts of crushed stone, 95-105 parts of sand, 5-10 parts of gangue powder, 5-8 parts of silica fume powder, 1-2 parts of fluorosilicate, 5-10 parts of modified asphalt, 3-5 parts of epoxy silsesquioxane, 4-8 parts of epoxidized ethylene propylene diene monomer, 1-3 parts of waste coconut shell fibers, 3-5 parts of fly ash fibers, 1-2 parts of a coupling agent, 1-4 parts of a water reducer, 0.5-1.5 parts of benzidine disulfonic acid and 35-45 parts of water. The waterproof concrete for the river-crossing tunnel disclosed by the invention has the advantages of good waterproof performance, good durability and sufficient strength.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to waterproof concrete for a river-crossing tunnel.
Background
In the field of construction, concrete is one of the most important civil engineering materials in the current generation, has the advantages of easy forming, low energy consumption, good durability, low price and capability of being manufactured into various bearing mechanisms by combining with steel, is the most widely applied building material in the current generation, plays a very important role in the development of human society, and is widely applied to the fields of various civil engineering, shipbuilding, mechanical industry, ocean development and geothermal engineering. The river-crossing tunnel is used as a common concrete application field, has stronger territory, has great relativity with local engineering geology and hydrogeology conditions, construction machines, experiences, hydrogeology, environmental conditions and the like, and has very high requirement on the waterproof performance of concrete materials.
Water is one of the main factors for deterioration of concrete. The water prevention of the tunnel crossing the river is a system engineering, and the water prevention and durability requirements of the concrete materials used by the tunnel crossing the river are very high. Due to the characteristics of the structure of the concrete material in the prior art, leakage phenomenon can often occur in the use process, especially for underground and underwater structural engineering, which seriously affects and restricts the application of the concrete material and can not meet the use requirement of the river-crossing tunnel on the concrete material.
In order to solve the defects of insufficient water resistance and durability of concrete, the concrete is generally improved by adding concrete admixture or brushing waterproof materials. However, these conventional waterproofing agents generally have disadvantages such as complex components, high cost, and poor waterproofing performance. The painted waterproof material forms one layer of organic film on the surface of concrete, and this layer of organic film is complete and has no air permeability, and the inside water vapor of concrete can not be discharged smoothly, has long time caused the phenomenon such as film swelling, drop easily to take place, and these waterproof materials are also not wear-resisting, in construction or service process once the film appears local impaired, waterproof effect just becomes invalid completely.
For example, chinese patent 200610017669.7 discloses a waterproof and anticorrosive concrete material, in order to achieve the purpose of waterproofing, a certain amount of paraffin is mixed into the concrete, the paraffin has good waterproof performance, but the paraffin itself is brittle, the strength of the concrete is reduced to a certain extent after the paraffin is mixed, the more the paraffin is mixed, the waterproof performance is stronger, but the strength is correspondingly reduced more, and the melting point of the paraffin is very low.
Therefore, the waterproof concrete for the river-crossing tunnel, which has good waterproof performance, good durability and sufficient strength, meets the market demand, has wide market value and application prospect, and plays a significant role in promoting the development of the river-crossing tunnel engineering field.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides waterproof concrete for the river-crossing tunnel, which has good waterproof performance, good durability and sufficient strength.
The technical scheme adopted for solving the technical problems is as follows: the waterproof concrete for the river-crossing tunnel is characterized by comprising the following raw materials in parts by weight: 95-115 parts of cement, 80-90 parts of crushed stone, 95-105 parts of sand, 5-10 parts of gangue powder, 5-8 parts of silica fume powder, 1-2 parts of fluorosilicate, 5-10 parts of modified asphalt, 3-5 parts of epoxy silsesquioxane, 4-8 parts of epoxidized ethylene propylene diene monomer, 1-3 parts of waste coconut shell fibers, 3-5 parts of fly ash fibers, 1-2 parts of a coupling agent, 1-4 parts of a water reducer, 0.5-1.5 parts of benzidine disulfonic acid and 35-45 parts of water.
Preferably, the water reducing agent is a mixture formed by mixing the basf RHEOPLUS 420 polycarboxylate water reducing agent and sodium lignin sulfonate according to the mass ratio of (3-5): 1.
Preferably, the coupling agent is at least one of a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH 570.
Preferably, the average diameter of the fly ash fiber is 5-10 μm, and the length-diameter ratio (20-30): 1.
Preferably, the average diameter of the waste coconut shell fiber is 5-10 mu m, and the length-diameter ratio (20-30) is 1.
Preferably, the epoxidized ethylene propylene diene monomer is prepared according to the method of the Chinese invention patent example 1 with the application number of ZL 201810352806.5.
Preferably, the preparation method of the modified asphalt comprises the following steps: uniformly mixing coal tar pitch, tetramethyl divinyl disilazane, 2, 4-diamino-6-diallylamino-1, 3, 5-triazine and a catalyst, heating to 120-145 ℃ at a speed of 5-10 ℃/min under the atmosphere of inert gas, preserving heat and stirring for 3-5 hours, continuing stirring for 1-2 hours at 170-190 ℃, and starting a colloid mill for 1-2 hours to obtain the modified asphalt.
Preferably, the mass ratio of the coal tar pitch to the tetramethyl divinyl disilazane to the 2, 4-diamino-6-diallylamino-1, 3, 5-triazine to the catalyst is 10 (0.8-1.2): 1-2): 0.2-0.4.
Preferably, the catalyst is at least one of boric acid, phosphoric acid and p-toluenesulfonic acid.
Preferably, the inert gas is any one of nitrogen, helium, neon and argon.
Preferably, the fluorosilicate is at least one of sodium fluorosilicate and magnesium fluorosilicate.
Preferably, the silica fume powder has an average particle diameter of 0.1 μm to 0.3. Mu.m.
Preferably, the average particle size of the gangue powder is 0.3mm-1.5mm.
Preferably, the particle size of the crushed stone is 10-20 mm, the mud content is less than 0.5%, and the needle-shaped particles are less than 10%.
Preferably, the fineness modulus of the sand is 2.6-3.0, and the mud content is less than 2%.
Preferably, the cement is Portland cement P.O 42.5.5.
The invention also provides a preparation method of the waterproof concrete for the river-crossing tunnel, which comprises the following steps: mixing the raw materials according to the weight portion, stirring and reacting for 8-12 minutes, pouring, vibrating, and curing for 8-12 days in a wet environment at 15-30 ℃.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
(1) The preparation method for the waterproof concrete for the river-crossing tunnel has the advantages of simple process, convenient construction, high preparation efficiency and finished product qualification rate, low requirements on equipment and production lines, safe and environment-friendly preparation process, low energy consumption and suitability for continuous large-scale production.
(2) The invention provides waterproof concrete for a river-crossing tunnel, which is prepared from the following raw materials in parts by weight: 95-115 parts of cement, 80-90 parts of crushed stone, 95-105 parts of sand, 5-10 parts of gangue powder, 5-8 parts of silica fume powder, 1-2 parts of fluorosilicate, 5-10 parts of modified asphalt, 3-5 parts of epoxy silsesquioxane, 4-8 parts of epoxidized ethylene propylene diene monomer, 1-3 parts of waste coconut shell fibers, 3-5 parts of fly ash fibers, 1-2 parts of a coupling agent, 1-4 parts of a water reducer, 0.5-1.5 parts of benzidine disulfonic acid and 35-45 parts of water. Through the mutual cooperation and coaction of the raw materials, the prepared waterproof concrete product has good waterproof performance, good durability and sufficient strength, and can meet the use requirement of a river-crossing tunnel.
(3) According to the waterproof concrete for the river-crossing tunnel, the waterproof effect can be effectively improved through the cooperation of the modified asphalt and the epoxidized ethylene propylene diene monomer; the silicon-nitrogen structure in the modified asphalt can improve the compatibility among the raw materials in the preparation process of the concrete, the triazine structure can improve the ageing resistance, the service life is effectively prolonged, the amino structure can react with epoxy groups on the epoxidized ethylene propylene diene monomer rubber and the epoxy silsesquioxane in an epoxy ring-opening way, an interpenetrating network structure is further formed, the compactness of the internal structure of the material is effectively improved, the waterproofness, the anti-seepage and anti-cracking performance and the durability of the material are further improved, and the service life and the mechanical properties of the material are further prolonged.
(4) The addition of the gangue powder, the silica fume powder, the waste coconut shell fibers and the fly ash fibers for the waterproof concrete for the river-crossing tunnel provided by the invention realizes recycling of wastes, and the waste is matched with cement, sand and broken stone after the addition, so that the compactness is improved, the production cost is reduced, and the waterproof performance, the mechanical performance and the durability can be effectively improved through reasonable selection of the particle size. The combination of fluorosilicate, coupling agent and benzidine disulfonic acid can improve the compatibility between the raw materials of the concrete material, thereby improving the durability. The combination of the waste coconut fiber and the fly ash fiber has good compatibility with other components, and can better resist seepage and crack after being added, thereby improving the waterproofness and the durability.
(5) According to the waterproof concrete for the river-crossing tunnel, active sites such as silazane, amino and the like can be introduced into asphalt through co-modification of tetramethyl divinyl disilazane and 2, 4-diamino-6-diallylamino-1, 3, 5-triazine, and compatibility of the asphalt with other components is improved, and the asphalt and other components are mutually matched to act, so that the asphalt is uniformly dispersed in a material structure, and the waterproof concrete is further beneficial to improving the waterproof property and the durability.
Detailed Description
The present invention will be further described with reference to the following examples in order to better understand the technical solutions of the present invention and to make the above features, objects and advantages of the present invention more clearly understood. The examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
Example 1
The waterproof concrete for the river-crossing tunnel comprises the following raw materials in parts by weight: 95 parts of cement, 80 parts of broken stone, 95 parts of sand, 5 parts of gangue powder, 5 parts of silica fume powder, 1 part of fluorosilicate, 5 parts of modified asphalt, 3 parts of epoxy silsesquioxane, 4 parts of epoxidized ethylene propylene diene monomer, 1 part of waste coconut fiber, 3 parts of fly ash fiber, 1 part of coupling agent, 1 part of water reducer, 0.5 part of benzidine disulfonic acid and 35 parts of water.
The water reducer is a mixture formed by mixing a basf RHEOPLUS 420 polycarboxylate water reducer and sodium lignin sulfonate according to a mass ratio of 3:1; the coupling agent is a silane coupling agent KH550; the average diameter of the fly ash fiber is 5 mu m, and the length-diameter ratio is 20:1; the average diameter of the waste coconut shell fibers is 5 mu m, and the length-diameter ratio is 20:1; the epoxidized ethylene propylene diene monomer is prepared according to the method of the Chinese invention patent example 1 with the application number ZL 201810352806.5.
The preparation method of the modified asphalt comprises the following steps: uniformly mixing coal tar pitch, tetramethyl divinyl disilazane, 2, 4-diamino-6-diallylamino-1, 3, 5-triazine and a catalyst, heating to 120 ℃ at a speed of 5 ℃/min under an inert gas atmosphere, preserving heat and stirring for 3 hours, continuing stirring for 1 hour at 170 ℃, and starting a colloid mill for 1 hour to obtain modified asphalt; the mass ratio of the coal tar pitch to the tetramethyl divinyl disilazane to the 2, 4-diamino-6-diallylamino-1, 3, 5-triazine to the catalyst is 10:0.8:1:0.2; the catalyst is boric acid; the inert gas is nitrogen.
The fluorosilicate is sodium fluorosilicate; the average grain diameter of the silica fume powder is 0.1 mu m; the average particle size of the gangue powder is 0.3mm; the particle size of the crushed stone is 10-20 mm, the mud content is less than 0.5%, and the needle-shaped particles are less than 10%; the fineness modulus of the sand is 2.6-3.0, and the mud content is less than 2%; the cement is ordinary Portland cement P.O 42.5.5.
The preparation method of the waterproof concrete for the river-crossing tunnel comprises the following steps: mixing the raw materials according to the weight portion, stirring and reacting for 8 minutes, pouring, vibrating, and curing for 8 days in a wet environment at 15 ℃.
Example 2
The waterproof concrete for the river-crossing tunnel comprises the following raw materials in parts by weight: 100 parts of cement, 83 parts of crushed stone, 98 parts of sand, 6 parts of gangue powder, 6 parts of silica fume powder, 1.2 parts of fluorosilicate, 6 parts of modified asphalt, 3.5 parts of epoxy silsesquioxane, 5 parts of epoxy ethylene propylene diene monomer, 1.5 parts of waste coconut fiber, 3.5 parts of fly ash fiber, 1.2 parts of a coupling agent, 2 parts of a water reducer, 0.7 part of benzidine disulfonic acid and 37 parts of water.
The water reducer is a mixture formed by mixing a basf RHEOPLUS 420 polycarboxylate water reducer and sodium lignin sulfonate according to a mass ratio of 3.5:1; the coupling agent is silane coupling agent KH560; the average diameter of the fly ash fiber is 6 mu m, and the length-diameter ratio is 23:1; the average diameter of the waste coconut shell fibers is 6 mu m, and the length-diameter ratio is 23:1; the epoxidized ethylene propylene diene monomer is prepared according to the method of the Chinese invention patent example 1 with the application number ZL 201810352806.5.
The preparation method of the modified asphalt comprises the following steps: uniformly mixing coal tar pitch, tetramethyl divinyl disilazane, 2, 4-diamino-6-diallylamino-1, 3, 5-triazine and a catalyst, heating to 130 ℃ at a speed of 6 ℃/min under the atmosphere of inert gas, keeping the temperature and stirring for 3.5 hours, continuing stirring for 1.2 hours at 175 ℃, and starting a colloid mill for 1.2 hours to obtain modified asphalt; the mass ratio of the coal tar pitch to the tetramethyl divinyl disilazane to the 2, 4-diamino-6-diallylamino-1, 3, 5-triazine to the catalyst is 10:0.9:1.2:0.25; the catalyst is phosphoric acid; the inert gas is helium.
The fluorosilicate is magnesium fluorosilicate; the average grain diameter of the silica fume powder is 0.15 mu m; the average particle size of the gangue powder is 0.5mm; the particle size of the crushed stone is 10-20 mm, the mud content is less than 0.5%, and the needle-shaped particles are less than 10%; the fineness modulus of the sand is 2.6-3.0, and the mud content is less than 2%; the cement is ordinary Portland cement P.O 42.5.5.
The preparation method of the waterproof concrete for the river-crossing tunnel comprises the following steps: mixing the raw materials according to the weight portion, stirring and reacting for 9 minutes, pouring, vibrating, and curing for 9 days in a wet environment at the temperature of 19 ℃.
Example 3
The waterproof concrete for the river-crossing tunnel comprises the following raw materials in parts by weight: 105 parts of cement, 83 parts of crushed stone, 100 parts of sand, 7.5 parts of coal gangue powder, 6.5 parts of silica fume powder, 1.5 parts of fluorosilicate, 7.5 parts of modified asphalt, 4 parts of epoxy silsesquioxane, 6 parts of epoxidized ethylene propylene diene monomer, 2 parts of waste coconut fiber, 4 parts of fly ash fiber, 1.5 parts of a coupling agent, 2.5 parts of a water reducer, 1 part of benzidine disulfonic acid and 40 parts of water.
The water reducer is a mixture formed by mixing a basf RHEOPLUS 420 polycarboxylate water reducer and sodium lignin sulfonate according to a mass ratio of 4:1; the coupling agent is a silane coupling agent KH570; the average diameter of the fly ash fiber is 7.5 mu m, and the length-diameter ratio is 25:1; the average diameter of the waste coconut shell fibers is 7.5 mu m, and the length-diameter ratio is 25:1; the epoxidized ethylene propylene diene monomer is prepared according to the method of the Chinese invention patent example 1 with the application number ZL 201810352806.5.
The preparation method of the modified asphalt comprises the following steps: uniformly mixing coal tar pitch, tetramethyl divinyl disilazane, 2, 4-diamino-6-diallylamino-1, 3, 5-triazine and a catalyst, heating to 135 ℃ at a speed of 7.5 ℃/min under the atmosphere of inert gas, preserving heat and stirring for 4 hours, continuing stirring for 1.5 hours at 180 ℃, and starting a colloid mill for 1.5 hours to obtain modified asphalt; the mass ratio of the coal tar pitch to the tetramethyl divinyl disilazane to the 2, 4-diamino-6-diallylamino-1, 3, 5-triazine to the catalyst is 10:1:1.5:0.3; the catalyst is p-toluenesulfonic acid; the inert gas is neon.
The fluorosilicate is sodium fluorosilicate; the average grain diameter of the silica fume powder is 0.2 mu m; the average particle size of the gangue powder is 0.9mm; the particle size of the crushed stone is 10-20 mm, the mud content is less than 0.5%, and the needle-shaped particles are less than 10%; the fineness modulus of the sand is 2.6-3.0, and the mud content is less than 2%; the cement is ordinary Portland cement P.O 42.5.5.
The preparation method of the waterproof concrete for the river-crossing tunnel comprises the following steps: mixing the raw materials according to the weight portion, stirring and reacting for 10 minutes, pouring, vibrating, and curing for 10 days in a wet environment at 22 ℃.
Example 4
The waterproof concrete for the river-crossing tunnel comprises the following raw materials in parts by weight: 110 parts of cement, 88 parts of crushed stone, 103 parts of sand, 9 parts of coal gangue powder, 7.5 parts of silica fume powder, 1.8 parts of fluorosilicate, 9.5 parts of modified asphalt, 4.5 parts of epoxy silsesquioxane, 7.5 parts of epoxy ethylene propylene diene monomer, 2.5 parts of waste coconut fiber, 4.5 parts of fly ash fiber, 1.8 parts of coupling agent, 3.5 parts of water reducer, 1.3 parts of benzidine disulfonic acid and 42 parts of water.
The water reducer is a mixture formed by mixing a basf RHEOPLUS 420 polycarboxylate water reducer and sodium lignin sulfonate according to a mass ratio of 4.5:1; the coupling agent is a mixture formed by mixing a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH570 according to a mass ratio of 1:2:3; the average diameter of the fly ash fiber is 9 mu m, and the length-diameter ratio is 28:1; the average diameter of the waste coconut shell fibers is 9 mu m, and the length-diameter ratio is 27:1; the epoxidized ethylene propylene diene monomer is prepared according to the method of the Chinese invention patent example 1 with the application number ZL 201810352806.5.
The preparation method of the modified asphalt comprises the following steps: uniformly mixing coal tar pitch, tetramethyl divinyl disilazane, 2, 4-diamino-6-diallylamino-1, 3, 5-triazine and a catalyst, heating to 142 ℃ at a speed of 9 ℃/min under the atmosphere of inert gas, keeping the temperature and stirring for 4.5 hours, continuing stirring for 1.8 hours at 185 ℃, and starting a colloid mill for 1.8 hours to obtain modified asphalt; the mass ratio of the coal tar pitch to the tetramethyl divinyl disilazane to the 2, 4-diamino-6-diallylamino-1, 3, 5-triazine to the catalyst is 10:1.1:1.8:0.35; the catalyst is a mixture formed by mixing boric acid, phosphoric acid and p-toluenesulfonic acid according to a mass ratio of 1:2:3; the inert gas is argon.
The fluorosilicate is a mixture formed by mixing sodium fluorosilicate and magnesium fluorosilicate according to a mass ratio of 3:5; the average grain diameter of the silica fume powder is 0.25 mu m; the average particle size of the gangue powder is 1.3mm; the particle size of the crushed stone is 10-20 mm, the mud content is less than 0.5%, and the needle-shaped particles are less than 10%; the fineness modulus of the sand is 2.6-3.0, and the mud content is less than 2%; the cement is ordinary Portland cement P.O 42.5.5.
The preparation method of the waterproof concrete for the river-crossing tunnel comprises the following steps: mixing the raw materials according to the weight portion, stirring and reacting for 11 minutes, pouring, vibrating, and curing for 11 days in a wet environment at 28 ℃.
Example 5
The waterproof concrete for the river-crossing tunnel comprises the following raw materials in parts by weight: 115 parts of cement, 90 parts of broken stone, 105 parts of sand, 10 parts of gangue powder, 8 parts of silica fume powder, 2 parts of fluorosilicate, 10 parts of modified asphalt, 5 parts of epoxy silsesquioxane, 8 parts of epoxidized ethylene propylene diene monomer, 3 parts of waste coconut fiber, 5 parts of fly ash fiber, 2 parts of coupling agent, 4 parts of water reducer, 1.5 parts of benzidine disulfonic acid and 45 parts of water.
The water reducer is a mixture formed by mixing a basf RHEOPLUS 420 polycarboxylate water reducer and sodium lignin sulfonate according to a mass ratio of 5:1; the coupling agent is silane coupling agent KH560; the average diameter of the fly ash fiber is 10 mu m, and the length-diameter ratio is 30:1; the average diameter of the waste coconut shell fibers is 10 mu m, and the length-diameter ratio is 30:1; the epoxidized ethylene propylene diene monomer is prepared according to the method of the Chinese invention patent example 1 with the application number ZL 201810352806.5.
The preparation method of the modified asphalt comprises the following steps: uniformly mixing coal tar pitch, tetramethyl divinyl disilazane, 2, 4-diamino-6-diallylamino-1, 3, 5-triazine and a catalyst, heating to 145 ℃ at a speed of 10 ℃/min under the atmosphere of inert gas, preserving heat and stirring for 5 hours, continuing stirring for 2 hours at 190 ℃, and starting a colloid mill for 2 hours to obtain modified asphalt; the mass ratio of the coal tar pitch to the tetramethyl divinyl disilazane to the 2, 4-diamino-6-diallylamino-1, 3, 5-triazine to the catalyst is 10:1.2:2:0.4; the catalyst is p-toluenesulfonic acid; the inert gas is nitrogen.
The fluorosilicate is sodium fluorosilicate; the average grain diameter of the silica fume powder is 0.3 mu m; the average particle size of the gangue powder is 1.5mm; the particle size of the crushed stone is 10-20 mm, the mud content is less than 0.5%, and the needle-shaped particles are less than 10%; the fineness modulus of the sand is 2.6-3.0, and the mud content is less than 2%; the cement is ordinary Portland cement P.O 42.5.5.
The preparation method of the waterproof concrete for the river-crossing tunnel comprises the following steps: mixing the raw materials according to the weight portion, stirring and reacting for 12 minutes, pouring, vibrating, and curing for 12 days in a 30 ℃ moist environment.
Comparative example 1
The formulation and preparation method of the waterproof concrete for the river-crossing tunnel are basically the same as those of the example 1, except that coal pitch is used for replacing modified pitch and fluorosilicate is not added.
Comparative example 2
The formula and the preparation method of the waterproof concrete for the river-crossing tunnel are basically the same as those of the embodiment 1, except that the epoxidized ethylene propylene diene monomer and benzidine disulfonic acid are not added.
The concrete samples for river-crossing tunnel described in examples 1-5 and comparative examples 1-2 were subjected to performance tests according to the current corresponding national standards in China, and the test results are shown in Table 1, wherein the compressive strength is 28 d.
TABLE 1
| Detecting items | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 |
| Waterproof grade | P12 | P12 | P12 | P12 | P12 | P10 | P10 |
| Compressive strength (MPa) | 62.5 | 63.2 | 64.2 | 64.7 | 65.9 | 50.2 | 53.5 |
As can be seen from table 1, the waterproof concrete for river-crossing tunnels disclosed in the examples of the present invention has more excellent waterproof property and strength than the comparative examples; the addition of modified bitumen, fluorosilicate, epoxidized ethylene propylene diene monomer and benzidine disulfonic acid is beneficial for improving the above properties.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The waterproof concrete for the river-crossing tunnel is characterized by comprising the following raw materials in parts by weight: 95-115 parts of cement, 80-90 parts of crushed stone, 95-105 parts of sand, 5-10 parts of gangue powder, 5-8 parts of silica fume powder, 1-2 parts of fluorosilicate, 5-10 parts of modified asphalt, 3-5 parts of epoxy silsesquioxane, 4-8 parts of epoxidized ethylene propylene diene monomer, 1-3 parts of waste coconut shell fibers, 3-5 parts of fly ash fibers, 1-2 parts of a coupling agent, 1-4 parts of a water reducer, 0.5-1.5 parts of benzidine disulfonic acid and 35-45 parts of water.
2. The waterproof concrete for the river-crossing tunnel according to claim 1, wherein the water reducing agent is a mixture formed by mixing a basf RHEOPLUS 420 polycarboxylate water reducing agent and sodium lignin sulfonate according to a mass ratio of (3-5) to 1; the coupling agent is at least one of silane coupling agent KH550, silane coupling agent KH560 and silane coupling agent KH 570.
3. The waterproof concrete for the river-crossing tunnel according to claim 1, wherein the fly ash fibers have an average diameter of 5-10 μm and an aspect ratio (20-30): 1; the average diameter of the waste coconut shell fiber is 5-10 mu m, and the length-diameter ratio (20-30): 1.
4. The waterproof concrete for a river-crossing tunnel according to claim 1, wherein the preparation method of the modified asphalt comprises the following steps: uniformly mixing coal tar pitch, tetramethyl divinyl disilazane, 2, 4-diamino-6-diallylamino-1, 3, 5-triazine and a catalyst, heating to 120-145 ℃ at a speed of 5-10 ℃/min under the atmosphere of inert gas, preserving heat and stirring for 3-5 hours, continuing stirring for 1-2 hours at 170-190 ℃, and starting a colloid mill for 1-2 hours to obtain the modified asphalt.
5. The waterproof concrete for the river-crossing tunnel according to claim 4, wherein the mass ratio of coal tar pitch, tetramethyl divinyl disilazane, 2, 4-diamino-6-diallylamino-1, 3, 5-triazine and catalyst is 10 (0.8-1.2): 1-2): 0.2-0.4.
6. The waterproof concrete for the river-crossing tunnel according to claim 4, wherein the catalyst is at least one of boric acid, phosphoric acid and p-toluenesulfonic acid; the inert gas is any one of nitrogen, helium, neon and argon.
7. The waterproof concrete for a river-crossing tunnel according to claim 1, wherein the fluorosilicate is at least one of sodium fluorosilicate and magnesium fluorosilicate; the average grain diameter of the silica fume powder is 0.1-0.3 mu m; the average particle size of the gangue powder is 0.3mm-1.5mm.
8. The waterproof concrete for the river-crossing tunnel according to claim 1, wherein the particle size of the crushed stone is 10-20 mm, the mud content is less than 0.5%, and the needle-shaped particles are less than 10%.
9. The waterproof concrete for the river-crossing tunnel according to claim 1, wherein the fineness modulus of the sand is 2.6-3.0, and the mud content is less than 2%; the cement is ordinary Portland cement P.O 42.5.5.
10. A method for preparing waterproof concrete for river-crossing tunnels according to any one of claims 1 to 9, comprising the steps of: mixing the raw materials according to the weight portion, stirring and reacting for 8-12 minutes, pouring, vibrating, and curing for 8-12 days in a wet environment at 15-30 ℃.
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