CN112174554A - Single-component modified geopolymer and application thereof - Google Patents
Single-component modified geopolymer and application thereof Download PDFInfo
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- CN112174554A CN112174554A CN202011102593.4A CN202011102593A CN112174554A CN 112174554 A CN112174554 A CN 112174554A CN 202011102593 A CN202011102593 A CN 202011102593A CN 112174554 A CN112174554 A CN 112174554A
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- 229920000876 geopolymer Polymers 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 47
- 230000008929 regeneration Effects 0.000 claims abstract description 29
- 238000011069 regeneration method Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 19
- 238000003801 milling Methods 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000010881 fly ash Substances 0.000 claims abstract description 13
- 239000002699 waste material Substances 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 11
- 239000000654 additive Substances 0.000 claims abstract description 8
- 230000000996 additive effect Effects 0.000 claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 6
- 239000011707 mineral Substances 0.000 claims abstract description 6
- 239000006227 byproduct Substances 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims description 24
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 239000004115 Sodium Silicate Substances 0.000 claims description 14
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 8
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 7
- 229910052708 sodium Inorganic materials 0.000 claims description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 239000011398 Portland cement Substances 0.000 claims description 2
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000009418 renovation Methods 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 239000002956 ash Substances 0.000 abstract description 21
- 239000012190 activator Substances 0.000 abstract description 5
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 22
- 239000002002 slurry Substances 0.000 description 12
- 238000002156 mixing Methods 0.000 description 7
- 238000005056 compaction Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 230000007480 spreading Effects 0.000 description 6
- 238000003892 spreading Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 238000009775 high-speed stirring Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
-
- 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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/46—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing and placing the materials, e.g. slurry seals
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a single-component modified geopolymer injection and application thereof. The single-component modified geopolymer comprises 50.0-60.0 parts of industrial byproduct silicon-aluminum mineral materials, 25.0-30.0 parts of construction waste powder, 5.0-10.0 parts of cement, 5.0-10.0 parts of solid excitant and 0.2-1.0 part of additive. The single-component modified geopolymer prepared by the invention adopts the solid activator which is a salt substance, and the prepared single-component modified geopolymer is solid, is convenient to transport, can be directly constructed after being added with water and stirred on site, and has slow curing speed and long operable time; the single-component modified geopolymer is applied to the cold regeneration treatment process of the lime-fly ash crushed stone, and the base material obtained by the cold regeneration treatment has high strength and good stability; the secondary ash gravel cold regeneration treatment process can realize the field treatment of the secondary ash gravel base milling material, reduce the transportation and stacking cost and reduce the environmental pollution.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a single-component modified geopolymer and application thereof.
Background
Grouting, also known as grouting, is a process in which a slurry is prepared from a certain material, and the slurry is injected into gaps of particles in the formation, interfaces or cracks of the soil layer through a pressure-feed device, diffused, gelled and cured to achieve the purpose of strengthening the formation or preventing seepage and stopping leakage. Commonly used grouting materials are: 1) organic polymer pulp materials such as epoxy resin, polyurethane, acrylate and other chemical pulp materials generally have low viscosity, are easy to enter fine cracks or pores of a soil body, have strong pulp injection capacity and high manufacturing cost; 2) inorganic grouting materials, the existing inorganic grouting materials mostly use cement as a basic material, and the cement as a grouting material generally has the defects of poor slurry stability and low consolidation rate.
The geopolymer is an inorganic cementing material which is formed by a silicon-aluminum material under certain excitation action, has a silicon-oxygen tetrahedron and aluminum-oxygen tetrahedron alternate bonding network structure and is synthesized at normal temperature or below 150 ℃, has the advantages of wide raw material source, simple process, less energy consumption, small environmental pollution and the like, can react with base layer minerals, has compact structure of a consolidation body, strong scouring resistance and stable physical and chemical properties, and is an ideal substitute material for cement grouting materials. However, in the prior art, the geopolymer grouting material mainly adopts a two-component geopolymer material, a liquid alkaline activator needs to be produced in the practical application process, the liquid alkaline activator is corrosive and can stimulate skin and corrode a container, in addition, the two-component geopolymer is mixed to generate an exothermic reaction, a thickening speed block is short in operation time, grouting equipment needs to be cleaned in time in the application process, otherwise, the grouting equipment can be blocked, and the requirement on construction operation is high.
Meanwhile, the cold regeneration treatment process of the second-ash gravel base layer milling material mainly comprises the step of adding materials such as cement, slaked lime and the like into the second-ash gravel base layer milling material for cold regeneration treatment, so that the defect of insufficient bearing capacity exists generally, and the use requirement can be met only by adding new second-ash soil; on the other hand, for a road renovated due to pavement damage caused by expansion of the lime-gravel base layer, expansion factors caused by excessive lime, over-burnt lime, excessive gypsum and the like may exist in the milling material of the lime-gravel base layer, and on the basis of the expansion factors, materials such as cement, slaked lime and the like are added for cold regeneration treatment, so that the possibility of further expansion may be caused, and the purpose of eliminating the quality hidden trouble cannot be achieved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects in the prior art, provides a single-component modified geopolymer, directly adds water to stir and perform grouting construction on site, prolongs the hardening time and simplifies the operation process.
The technical scheme adopted by the invention for solving the technical problems is as follows: a single-component modified geopolymer comprises the following raw materials in parts by mass:
the solid excitant comprises the following raw materials in parts by mass:
50.0-60.0 parts of instant sodium silicate
15.0-30.0 parts of instant sodium fluosilicate
20.0-25.0 parts of sodium carbonate;
the modulus of the instant sodium silicate is 1.4-2.0.
Mixing and stirring the single-component modified geopolymer and water to obtain the single-component modified geopolymer grouting material, wherein the mass ratio of the single-component modified geopolymer is as follows: water 1: (0.3-0.4).
The industrial by-product silicon-aluminum mineral material and building rubbish powder contain a large amount of silicon oxide, aluminum oxide, calcium oxide and the like, and the waste residues have no or weak activity. The activity of silicon oxide, aluminum oxide and calcium oxide in the waste residue can be improved by utilizing alkalinity, and the hardening strength is formed by reaction. The weak acid strong alkali salt is adopted for excitation, so that the generation speed of activity can be delayed, the hardening time is prolonged, and the excessive hardening of the slurry is avoided. The addition of a small amount of cement improves the early slurry state and provides some early strength.
The single-component modified geopolymer prepared by the invention is powder, stirring and grouting are carried out in closed equipment in the using process, and the possibility of generating corrosion to a human body is low.
Further, the industrial byproduct alumino-silica mineral material is one or more of fly ash, mineral powder, zeolite powder and kaolin.
Further, the construction waste powder is house removal waste or road renovation milling waste, and the construction waste powder is powder with more than 200 meshes.
Further, the cement is Portland cement, and the cement strength is more than or equal to 42.5.
Further, the additive comprises the following raw materials in parts by mass:
65.0-80.0 parts of polycarboxylic acid water reducing agent
10.0-20.0% of defoaming agent
5.0-10.0 parts of diutan.
The polyacid water reducing agent reduces the water consumption and improves the fluidity of the slurry; the defoaming agent reduces the number of bubbles in the slurry and improves the compactness of the hardened slurry; the diutan is used for improving the thixotropy of the slurry, preventing bleeding, bottom sinking and the like, and forming stable and uniform perfusion slurry.
And (3) uniformly stirring the single-component modified geopolymer and water at a high speed according to the proportion, and then performing grouting construction, wherein the initial flow cone fluidity of the slurry is 16-22 s, the flow cone fluidity in 30 minutes is 26-30 s, the initial setting time is more than 120min, and the 28-day strength is more than 35 MPa.
The application of the single-component modified geopolymer is applied to a double-ash gravel cold recycling treatment process, and the double-ash gravel cold recycling treatment process comprises the following steps:
(1) the milling material for the single-component modified geopolymer and the two-ash gravel base layer is prepared from (8.0-15.0): 100.0, and uniformly spreading and mixing;
(2) leveling the uniformly mixed lime-fly ash gravel regeneration material, and rolling until the compaction degree is reached;
(3) and cold regeneration base layer health preserving to guarantee certain humidity thereof, the surface is in the humid state all the time, and the health preserving is generally no less than 3 ~ 7 d.
The single-component modified geopolymer is adopted to excite the activity of residual fly ash in old second-ash crushed stone and the activity of a silicon-aluminum material in clay particles generated in the milling process, and the unconfined compressive strength (7d) of a base material after treatment and cold regeneration treatment is greater than 2.0 MPa; the long-term soaking expansion rate of the base material of the cold regeneration treatment of the lime-flyash-gravel base milling material which causes the damage of arch camber, wave and the like of the road surface due to expansion is less than 0.1 percent.
The invention has the beneficial effects that: the invention has simple structure and the following advantages:
(1) the single-component modified geopolymer prepared by the invention adopts the solid excitant which is a salt substance, the prepared single-component modified geopolymer is solid, the transportation is convenient, the single-component modified geopolymer is directly constructed after water is added and stirred on site, the initial flow cone fluidity of slurry is 16-22 s, the flow cone fluidity in 30 minutes is 26-30 s, the initial setting time is more than 120min, the 28-day strength is more than 35MPa, the curing speed is slow, and the operable time is long;
(2) the single-component modified geopolymer prepared by the method adopts industrial byproduct silicon-aluminum mineral materials and building waste powder as main raw materials, so that resources are saved, and waste is changed into valuable;
(3) the single-component modified geopolymer prepared by the invention does not need to prepare a liquid alkaline activator, avoids the corrosion of the liquid alkaline activator to production equipment and containers, has no direct damage to human bodies, and is safe and environment-friendly;
(4) the single-component modified geopolymer is applied to the cold regeneration treatment process of the lime-fly-ash macadam, and the base material obtained by cold regeneration treatment has high strength and good stability and has wide adaptability to milling materials of lime-fly-ash macadam bases made of different materials; the secondary ash gravel cold regeneration treatment process can realize the field treatment of the secondary ash gravel base milling material, reduce the transportation and stacking cost and reduce the environmental pollution.
Detailed Description
The invention will now be described in further detail with reference to preferred embodiments.
Example 1
A single-component modified geopolymer comprises the following raw materials in parts by mass:
the solid excitant comprises the following raw materials in parts by mass:
50.0 of instant sodium silicate
Quick soluble sodium fluosilicate 15.0
20.0 parts of sodium carbonate;
the modulus of the instant sodium silicate is 1.4;
the additive comprises the following raw materials in parts by mass:
polycarboxylic acid water reducing agent 65.0
Antifoam 10.0
5.0 portions of diutan.
The mass ratio of the single-component modified geopolymer to water is 1: and (3) grouting construction is carried out after high-speed stirring is carried out uniformly.
The two-ash gravel cold regeneration treatment process comprises the following steps:
(1) the milling material for the single-component modified geopolymer and the two-ash gravel base layer is prepared according to the following steps of 8.0: 100.0, and uniformly spreading and mixing;
(2) leveling the uniformly mixed lime-fly ash gravel regeneration material, and rolling until the compaction degree is reached;
(3) and performing cold regeneration base layer curing to ensure certain humidity, and keeping the surface in a wet state all the time for 3 d.
Example 2
A single-component modified geopolymer comprises the following raw materials in parts by mass:
the solid excitant comprises the following raw materials in parts by mass:
quick-soluble sodium silicate 52.0
Quick soluble sodium fluosilicate 19.0
21.0 parts of sodium carbonate;
the modulus of the instant sodium silicate is 1.5;
the additive comprises the following raw materials in parts by mass:
polycarboxylic acid water reducing agent 70.0
Antifoam agent 12.0
And 6.5 of diutan.
The mass ratio of the single-component modified geopolymer to water is 1: and (5) performing grouting construction after 0.32 high-speed stirring is performed uniformly.
The two-ash gravel cold regeneration treatment process comprises the following steps:
(1) the single-component modified geopolymer and the two-ash gravel base layer milling material are mixed according to the weight ratio of 9.5: 100.0, and uniformly spreading and mixing;
(2) leveling the uniformly mixed lime-fly ash gravel regeneration material, and rolling until the compaction degree is reached;
(3) and performing cold regeneration basic health preserving to ensure certain humidity, and keeping the surface in a wet state all the time for 5 d.
Example 3
A single-component modified geopolymer comprises the following raw materials in parts by mass:
the solid excitant comprises the following raw materials in parts by mass:
quick soluble sodium silicate 55.0
Quick soluble sodium fluosilicate 22.5
22.5 of sodium carbonate;
the modulus of the instant sodium silicate is 1.7;
the additive comprises the following raw materials in parts by mass:
polycarboxylic acid water reducing agent 72.5
Antifoam 15.0
And 7.5 of diutan.
The mass ratio of the single-component modified geopolymer to water is 1: and (5) performing grouting construction after 0.35-speed stirring is performed uniformly.
The two-ash gravel cold regeneration treatment process comprises the following steps:
(1) the milling material for the single-component modified geopolymer and the two-ash gravel base layer is prepared from the following raw materials in parts by weight of 11.5: 100.0, and uniformly spreading and mixing;
(2) leveling the uniformly mixed lime-fly ash gravel regeneration material, and rolling until the compaction degree is reached;
(3) and performing cold regeneration base layer curing to ensure certain humidity, and keeping the surface in a wet state all the time for 7 d.
Example 4
A single-component modified geopolymer comprises the following raw materials in parts by mass:
the solid excitant comprises the following raw materials in parts by mass:
quick soluble sodium silicate 58.0
Fast soluble sodium fluosilicate 28.0
24.0 parts of sodium carbonate;
the modulus of the instant sodium silicate is 1.8;
the additive comprises the following raw materials in parts by mass:
polycarboxylic acid water reducing agent 78.0
Antifoam agent 17.0
And 8.0 of diutan.
The mass ratio of the single-component modified geopolymer to water is 1: and (5) performing grouting construction after 0.37-speed stirring is performed uniformly.
The two-ash gravel cold regeneration treatment process comprises the following steps:
(1) the milling material for the single-component modified geopolymer and the two-ash gravel base layer is prepared according to the following steps of 13.0: 100.0, and uniformly spreading and mixing;
(2) leveling the uniformly mixed lime-fly ash gravel regeneration material, and rolling until the compaction degree is reached;
(3) and performing cold regeneration base layer curing to ensure certain humidity, and keeping the surface in a wet state for 8d all the time.
Example 5
A single-component modified geopolymer comprises the following raw materials in parts by mass:
the solid excitant comprises the following raw materials in parts by mass:
instant sodium silicate 60.0
Quick soluble sodium fluosilicate 30.0
25.0 parts of sodium carbonate;
the modulus of the instant sodium silicate is 2.0;
the additive comprises the following raw materials in parts by mass:
polycarboxylic acid water reducing agent 80.0
Antifoam 20.0
Diutan 10.0.
The mass ratio of the single-component modified geopolymer to water is 1: 4, grouting construction is carried out after high-speed stirring is carried out uniformly.
The two-ash gravel cold regeneration treatment process comprises the following steps:
(1) the milling material for the single-component modified geopolymer and the two-ash gravel base layer is prepared according to the following steps of 15.0: 100.0, and uniformly spreading and mixing;
(2) leveling the uniformly mixed lime-fly ash gravel regeneration material, and rolling until the compaction degree is reached;
(3) and performing cold regeneration base layer curing to ensure certain humidity, and keeping the surface in a wet state all the time for 9 d.
The single-component modified geopolymer prepared in the embodiment 1-5 is uniformly stirred with water and then grouting construction is carried out, and the construction performance parameters are shown in table 1.
TABLE 1 examples 1-5 slip casting workability parameters
While particular embodiments of the present invention have been described in the foregoing specification, various modifications and alterations to the previously described embodiments will become apparent to those skilled in the art from this description without departing from the spirit and scope of the invention.
Claims (6)
1. A single-component modified geopolymer is characterized in that: the single-component modified geopolymer comprises the following raw materials in parts by mass:
the solid excitant comprises the following raw materials in parts by mass:
50.0-60.0 parts of instant sodium silicate
15.0-30.0 parts of instant sodium fluosilicate
20.0-25.0 parts of sodium carbonate;
the modulus of the instant sodium silicate is 1.4-2.0.
2. The one-component modified geopolymer of claim 1, wherein: the industrial byproduct alumino-silica mineral material is one or more of fly ash, mineral powder, zeolite powder and kaolin.
3. The one-component modified geopolymer of claim 1, wherein: the construction waste powder is house removal waste or road renovation milling waste, and the construction waste powder is powder with more than 200 meshes.
4. The one-component modified geopolymer of claim 1, wherein: the cement is Portland cement, and the strength of the cement is more than or equal to 42.5.
5. The one-component modified geopolymer of claim 1, wherein: the additive comprises the following raw materials in parts by mass:
65.0-80.0 parts of polycarboxylic acid water reducing agent
10.0-20.0% of defoaming agent
5.0-10.0 parts of diutan.
6. Use of the single-component modified geopolymer according to any of claims 1 to 5, characterized in that: the single-component modified geopolymer is applied to a cold regeneration treatment process of lime-fly ash macadam.
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| CN115286349A (en) * | 2022-08-15 | 2022-11-04 | 中晶环境科技股份有限公司 | Modified cementitious materials, processes for their production and use of compositions |
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| CN115286349B (en) * | 2022-08-15 | 2023-08-15 | 中晶环境科技股份有限公司 | Modified cementing material, production process thereof and application of composition |
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