CN111574099A - Hollow anchor rod grouting material additive, preparation method and application - Google Patents
Hollow anchor rod grouting material additive, preparation method and application Download PDFInfo
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- CN111574099A CN111574099A CN202010382951.5A CN202010382951A CN111574099A CN 111574099 A CN111574099 A CN 111574099A CN 202010382951 A CN202010382951 A CN 202010382951A CN 111574099 A CN111574099 A CN 111574099A
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- anchor rod
- hollow anchor
- grouting material
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- 239000000463 material Substances 0.000 title claims abstract description 91
- 239000000654 additive Substances 0.000 title claims abstract description 69
- 230000000996 additive effect Effects 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title abstract description 22
- 239000004568 cement Substances 0.000 claims abstract description 68
- 239000002002 slurry Substances 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003381 stabilizer Substances 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 28
- 230000015271 coagulation Effects 0.000 claims abstract description 25
- 238000005345 coagulation Methods 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 15
- 230000009974 thixotropic effect Effects 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 13
- 239000010703 silicon Substances 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 11
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims description 56
- 238000013329 compounding Methods 0.000 claims description 41
- 239000002994 raw material Substances 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000011325 microbead Substances 0.000 claims description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 12
- 229920002310 Welan gum Polymers 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 12
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 12
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 12
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 12
- 239000000176 sodium gluconate Substances 0.000 claims description 12
- 229940005574 sodium gluconate Drugs 0.000 claims description 12
- 235000012207 sodium gluconate Nutrition 0.000 claims description 12
- 229910021487 silica fume Inorganic materials 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 9
- 239000004327 boric acid Substances 0.000 claims description 9
- 239000004156 Azodicarbonamide Substances 0.000 claims description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 8
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 8
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 8
- 229910052791 calcium Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 5
- 235000015165 citric acid Nutrition 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 235000010755 mineral Nutrition 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- 239000011975 tartaric acid Substances 0.000 claims description 5
- 235000002906 tartaric acid Nutrition 0.000 claims description 5
- 239000000230 xanthan gum Substances 0.000 claims description 5
- 229920001285 xanthan gum Polymers 0.000 claims description 5
- 229940082509 xanthan gum Drugs 0.000 claims description 5
- 235000010493 xanthan gum Nutrition 0.000 claims description 5
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 4
- 235000010338 boric acid Nutrition 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical group [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- -1 azo compound Chemical class 0.000 claims description 2
- 150000004676 glycans Chemical class 0.000 claims description 2
- 229920001282 polysaccharide Polymers 0.000 claims description 2
- 239000005017 polysaccharide Substances 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims 1
- 230000000740 bleeding effect Effects 0.000 abstract description 10
- 238000005086 pumping Methods 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 238000004873 anchoring Methods 0.000 description 12
- 239000011435 rock Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 11
- 230000001603 reducing effect Effects 0.000 description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- 239000004570 mortar (masonry) Substances 0.000 description 9
- 229920005646 polycarboxylate Polymers 0.000 description 9
- 239000008030 superplasticizer Substances 0.000 description 9
- 239000004721 Polyphenylene oxide Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 8
- 229920000570 polyether Polymers 0.000 description 8
- 239000003517 fume Substances 0.000 description 7
- 239000000377 silicon dioxide Substances 0.000 description 7
- 229940009868 aluminum magnesium silicate Drugs 0.000 description 5
- WMGSQTMJHBYJMQ-UHFFFAOYSA-N aluminum;magnesium;silicate Chemical compound [Mg+2].[Al+3].[O-][Si]([O-])([O-])[O-] WMGSQTMJHBYJMQ-UHFFFAOYSA-N 0.000 description 5
- 239000013530 defoamer Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0082—Segregation-preventing agents; Sedimentation-preventing agents
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides an additive for a grouting material of a hollow anchor rod, a preparation method and application thereof, wherein the formula comprises the following components: 70-80% of quick hardening component, 8-15% of expansion component, 6-10% of active admixture, 1-3% of polycarboxylic acid water reducing agent, 1-3% of coagulation adjusting component, 0.3-0.4% of organic silicon defoaming agent, 0.01-0.02% of suspension stabilizer and 0.02-0.03% of thixotropic lubricant. Compared with the prior art, the additive has good adaptability to cement, can obviously improve the fluidity and the fluidity retention time of the grouting material of the hollow anchor rod after being mixed, and has the initial flow time of less than or equal to 25 seconds and the 30min flow time of less than or equal to 35 seconds; the bleeding condition of the slurry can be obviously improved, and the pumping performance can be improved; the setting time of the slurry is shortened, and the early and later strength is improved; compensating for shrinkage during the slurry plasticity phase and after hardening.
Description
Technical Field
The invention belongs to the technical field of materials for geotechnical engineering construction, and particularly relates to an additive for a grouting material of a hollow anchor rod, a preparation method and application.
Background
The hollow anchor rod grouting technology is an anchoring technology suitable for weak surrounding rocks, fault broken zones, sand pebbles and the like, and holes are easy to collapse after hole rotation, the anchor rod and grouting are combined, the anchor rod has the supporting effect of the anchor rod, a grouting pipe and the anchor rod are integrated, the hollow grouting anchor rod can effectively improve the anchoring effect on the surrounding rocks, the injected slurry can fill cracks in the surrounding rocks, and the surrounding rocks with holes form a whole through the bonding effect of the grouting material, so that the capability of bearing deformation of the surrounding rocks is improved.
The grouting materials applied in the current engineering are mainly divided into chemical grouting materials and cement-based grouting materials, and compared with the prior art, the cement-based grouting materials have the advantages of good durability, high strength, no toxicity, wide sources, low cost and the like, and are widely applied to the current engineering. Although the research on grouting materials is mature at home and abroad, few researches on the grouting materials of the hollow anchor rod are carried out at present, so that the grouting materials for the hollow anchor rod in actual engineering are mainly common cement paste. However, the phenomenon of bottom sinking bleeding easily appears as the slip casting material in the cement paste, lead to appearing stifled pipe in the slip casting work progress, influence the construction progress, and the slurry setting time is long, cause the loss of slurry easily in loose country rock region, can't form stable anchor grout blanket, this risk that has also increased the anchor rod hole and has collapsed, intensity increases slowly also leads to the anchor effect to produce time later simultaneously, if the stock disturbance appears or the rock stratum condition that warp during this period, then can't guarantee later stage slip casting material's anchor effect. And the later stage volume shrinkage of the common cement paste is large, and pores are easily generated between the grouting material and the rock stratum, so that the anchor rod is easily damaged by external corrosive substances, and the overall anchoring effect of the anchor rod is reduced. Because the interior of the cement-based grouting material is difficult to detect after grouting is completed, the defects of the common cement-based grouting material after grouting is completed easily cause great potential safety hazards and are difficult to find, and irreparable serious consequences can be caused when problems are found.
If the grouting material is researched again, the selection and experimental verification from the aspects of the mixing proportion and raw materials are needed, and a large amount of manpower and material resources are consumed, so that the research on the modification of the additive suitable for cement paste is a more feasible and effective measure aiming at the existing anchoring grouting technology. Therefore, the additive for the grouting material of the hollow anchor rod, which has wide cement adaptability and can ensure better slurry homogeneity, high early and later strength, micro-expansion and strong anchoring force, is very important.
Disclosure of Invention
The invention aims to provide an additive for a grouting material of a hollow anchor rod, which has the performance meeting the requirements of wide cement adaptability, good slurry homogeneity, high early and later strength, micro-expansion, strong anchoring force and the like.
The invention also aims to provide a preparation method of the additive for the grouting material of the hollow anchor rod.
The invention also aims to provide application of the additive for the grouting material of the hollow anchor rod.
The specific technical scheme of the invention is as follows:
the invention provides an additive for a grouting material of a hollow anchor rod, which comprises the following raw materials in percentage by mass: 70-80% of quick hardening component, 8-15% of expansion component, 6-10% of active admixture, 1-3% of polycarboxylic acid water reducing agent, 1-3% of coagulation adjusting component, 0.3-0.4% of organic silicon defoaming agent, 0.01-0.02% of suspension stabilizer and 0.02-0.03% of thixotropic lubricant.
The sum of the raw materials is 100 percent.
The quick hardening component is formed by compounding one or more of sulphoaluminate cement clinker powder or high-alumina cement clinker, wherein the specific surface area of the two clinker powders is larger than or equal to 350m2/kg。
The rapid hardening component is preferably compounded by 90 mass percent to 10 mass percent of sulphoaluminate cement clinker powder and high-alumina cement clinker powder, and the early performance of the grouting material can be obviously improved by the preferable formula.
The expansion component is formed by compounding one or more of calcium oxide expansion agent, magnesium oxide expansion agent or calcium sulphoaluminate expansion agent with azo compounds.
The expansion component is preferably compounded by 98-99% of calcium oxide expansion agent, magnesium oxide expansion agent or calcium sulphoaluminate expansion agent and 1-2% of azodicarbonamide according to mass percentage. This preferred formulation can compensate for shrinkage during the slurry plasticity phase and after hardening.
The active admixture is one or more of micro-bead powder, silica fume or superfine mineral powder, wherein the specific surface area of the micro-bead powder is not less than 900m2The activity index of/kg and 28d is not less than 90 percent, and SiO in the silica fume2The content is not less than 85 percent, the 28d activity index is not less than 85 percent, and the specific surface area of the superfine mineral powder is not less than 1000m2The activity index of/kg, 28d is not less than 110%. The slurry pumping performance is improved through the self-rolling effect of the admixture, and the high activity of the admixture can improve the later strength of the slurry.
The active admixture is preferably formed by compounding 75-80% of micro-bead powder and 20-25% of superfine mineral powder or silica fume in percentage by mass.
The water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%;
the coagulation regulating component is one or more of boric acid, sodium gluconate, tartaric acid or citric acid.
Preferably, the coagulation regulating component is prepared by compounding 45-55% of sodium gluconate and 45-55% of boric acid, tartaric acid or citric acid in percentage by mass. The optimal formula and the quick-hardening components have good adaptability, so that the slurry can be ensured to have sufficient time fluidity on the premise of ensuring the early strength of the slurry, and the grouting construction requirement can be met.
The organic silicon defoaming agent is a ZJ-D120 type polyether modified organic silicon defoaming agent of Jiangsu McAb scientific and technological building materials science and technology Limited company, and the scheme can increase the dispersibility of the water reducing agent and improve the water reducing effect of the water reducing agent while removing harmful bubbles in slurry.
The suspension stabilizer is one or more of biological polysaccharide gums such as hydroxypropyl methyl cellulose ether, welan gum or xanthan gum. The slurry can be improved in homogeneity, the phenomenon of bottom sinking and bleeding is avoided, the probability of pump blockage is reduced, the adsorption of the water reducing agent to cement can be enhanced, and the adaptability of the admixture and the cement is improved.
The suspension stabilizer is preferably compounded by 5-10% of hydroxypropyl methyl cellulose ether and 90-95% of welan gum or xanthan gum by mass percentage.
The thixotropic lubricant is magnesium aluminum silicate, can improve the thixotropy of slurry, can be quickly thickened after the slurry is grouted to form a stable anchoring grouting layer, and can prevent the slurry from losing after the slurry is grouted in a loose surrounding rock area.
The invention provides a preparation method of an additive for a grouting material of a hollow anchor rod, which comprises the following steps:
firstly, stirring the rapid hardening component, the expansion component and the active admixture according to the formula amount, and then adding the rest materials in the formula and stirring to obtain the additive of the grouting material of the hollow anchor rod.
The preferred preparation method is as follows: firstly, stirring the rapid hardening component, the expansion component and the active admixture with the formula amount for 5-10min by using a mixer, then adding the rest materials in the formula and stirring for 5min to obtain the hollow anchor rod grouting material admixture.
The hollow anchor rod grouting material additive is used for a hollow anchor rod grouting material, and the specific application method comprises the following steps:
and mixing the additive with cement, wherein the mass ratio of the additive to the cement is 15-25: 75-85.
The preferred application method is as follows: and (3) mixing 20 mass percent of additive and 80 mass percent of common silicate 42.5 cement, adding 28 mass percent of water of the total mass of the additive and the cement, and stirring for 3-5min by using a forced stirrer to obtain slurry for grouting the hollow anchor rod.
The preparation method is simple, the raw materials are easy to obtain, and the product cost is low.
The invention relates to an additive which is specially developed based on a hollow anchor rod grouting material, and based on the existing anchoring grouting system, the rapid-hardening component and the set-regulating component are adopted to jointly act, so that the slurry setting time is greatly shortened on the premise of meeting the construction time requirement, the anchoring effect time of the slurry is advanced, the problems of collapse or shrinkage and the like in the early stage of an anchor rod hole are avoided, and the influence of early anchor rod disturbance or rock stratum deformation on the anchoring force can be weakened. The suspension stabilizer can ensure that the slurry does not have the phenomenon of bottom sinking and bleeding, and the pumping performance of the slurry is improved through the ball effect of the active admixture, so that the construction efficiency of grouting is improved, the adsorptivity of the water reducing agent to cement is enhanced, the adaptability of the admixture and the cement is increased, and the high activity of the active admixture can also improve the later strength of the slurry. Aiming at a weak surrounding rock area, thixotropic lubricity is introduced to increase thixotropy of slurry, after grouting of the slurry is completed, the slurry can be thickened rapidly due to the thixotropy to form a stable wedge-shaped anchoring body, and loss of the slurry from a surrounding rock gap is avoided to a great extent. The introduction of the expansion component can compensate the contraction generated in the slurry plasticity stage and after hardening, and the volume stability of the slurry is improved. The invention is mixed into the hollow anchor rod grouting material, can ensure that the slurry has no bleeding stratification phenomenon, improves the early strength of the slurry on the premise of ensuring the construction time of the slurry, and has micro-expansion of the volume of the slurry and high later strength and anchoring strength.
Compared with the prior art, the invention has the following advantages:
1. the additive has good adaptability to cement, can obviously improve the fluidity and the fluidity retention time of the grouting material of the hollow anchor rod after being mixed, and has the initial flow time of less than or equal to 25 seconds and the 30min flow time of less than or equal to 35 seconds.
2. After the grouting material for the hollow anchor rod is doped, the bleeding condition of slurry can be obviously improved, the pumping performance is improved, the bleeding rate is less than or equal to 0.2%, and the grouting construction efficiency is improved.
3. After the hollow anchor rod grouting material is doped, the slurry coagulation time can be shortened, and the early and later strength can be improved, wherein the 2h strength is not less than 10MPa, the 1d strength is not less than 30MPa, and the 28d strength is not less than 75 MPa.
4. After the hollow anchor rod grouting material is doped into the hollow anchor rod grouting material, the plastic stage and the hardened shrinkage of slurry can be compensated, and the 3-hour vertical expansion rate is larger than or equal to 0.03%, the 24-hour vertical expansion rate is larger than or equal to 0.05%, and the 7-d limited expansion rate is larger than or equal to 0.02%.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the following examples.
Example 1
The hollow anchor rod grouting material additive comprises the following raw materials in percentage by mass:
72.165% of quick-hardening component, 14% of expansion component, 10% of active admixture, 2% of polycarboxylic acid water reducing agent, 1.5% of coagulation regulating component, 0.3% of polyether modified organic silicon defoamer, 0.015% of suspension stabilizer and 0.02% of aluminum magnesium silicate thixotropic lubricant. The quick hardening component is formed by compounding 90 mass percent of sulphoaluminate cement clinker powder and 10 mass percent of high-alumina cement clinker powder, and the specific surface area of the two clinker powders is larger than or equal to 350m2Per kg; the active admixture is formed by compounding 80 mass percent of micro-bead powder and 20 mass percent of silica fume, wherein the specific surface area of the micro-bead powder is not less than 900m2The activity index of/kg and 28d is not less than 90 percent, and SiO in the silica fume2The content is not less than 85%, and the 28d activity index is not less than 85%; the expansion component is formed by compounding 99% of calcium oxide expansion agent and 1% of azodicarbonamide in percentage by mass; the water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%; the coagulation regulating component is formed by compounding 45 mass percent of sodium gluconate and 55 mass percent of boric acid; the suspension stabilizer is formed by compounding 5% of hydroxypropyl methyl cellulose ether and 95% of welan gum in percentage by mass;
the preparation method of the additive for the grouting material of the hollow anchor rod comprises the following steps:
a: weighing the raw materials of the quick hardening component, the expansion component, the active admixture, the polycarboxylic acid water reducing agent, the coagulation regulating component, the organic silicon defoaming agent, the suspension stabilizer and the thixotropic lubricant according to the mass percentage.
B: firstly, stirring the rapid hardening component, the expansion component and the active admixture with the formula amount for 5-10min by using a mixer, then adding the rest materials in the formula and stirring for 5min to obtain the hollow anchor rod grouting material admixture.
The additive prepared in the embodiment 1 is added into cement to prepare slurry for grouting of the hollow anchor rod, and the concrete steps are as follows:
the admixture prepared in the embodiment 1 with the mass percent of 20% is mixed with the ordinary Portland 42.5 cement with the mass percent of 80%, then the water with the mass percent of 28% of the total mass of the admixture and the cement is added, and the mixture is stirred for 4min by a forced stirrer, so that the slurry for grouting the hollow anchor rod can be obtained.
Example 2
The hollow anchor rod grouting material additive comprises the following raw materials in percentage by mass:
76.645% of quick-hardening component, 11% of expansion component, 8% of active admixture, 2% of polycarboxylic acid water reducing agent, 2% of coagulation regulating component, 0.32% of polyether modified organic silicon defoaming agent, 0.015% of suspension stabilizer and 0.02% of thixotropic lubricant. The quick hardening component is formed by compounding 90 mass percent of sulphoaluminate cement clinker powder and 10 mass percent of high-alumina cement clinker powder, and the specific surface area of the two clinker powders is larger than or equal to 350m2Per kg; the active admixture is formed by compounding 80 mass percent of micro-bead powder and 20 mass percent of silica fume, wherein the specific surface area of the micro-bead powder is not less than 900m2The activity index of/kg and 28d is not less than 90 percent, and SiO in the silica fume2The content is not less than 85%, and the 28d activity index is not less than 85%; the expansion component is formed by compounding 98 mass percent of calcium sulphoaluminate expansion agent and 2 mass percent of azodicarbonamide; the water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%; the coagulation regulating component is formed by compounding 45 mass percent of sodium gluconate and 55 mass percent of boric acid; the suspension stabilizer is formed by compounding 5% of hydroxypropyl methyl cellulose ether and 95% of welan gum in percentage by mass;
the preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 2.
The additive prepared in the embodiment 2 is added into cement to prepare slurry for grouting the hollow anchor rod, and the concrete steps are as follows:
the admixture prepared in the embodiment 2 with the mass percent of 20% is mixed with 80% of ordinary silicate 42.5 cement, then water with the mass of 28% of the total mass of the admixture and the cement is added, and the mixture is stirred for 5min by a forced stirrer, so that slurry for grouting the hollow anchor rod can be obtained.
Example 3
The hollow anchor rod grouting material additive comprises the following raw materials in percentage by mass:
79.135% of quick-hardening component, 8% of expansion component, 7% of active admixture, 2.5% of polycarboxylic acid water reducing agent, 3% of coagulation regulating component, 0.33% of polyether modified organic silicon defoamer, 0.01% of suspension stabilizer and 0.025% of aluminum magnesium silicate thixotropic lubricant. The quick hardening component is formed by compounding 90 mass percent of sulphoaluminate cement clinker powder and 10 mass percent of high-alumina cement clinker powder, and the specific surface area of the two clinker powders is larger than or equal to 350m2Per kg; the active admixture is formed by compounding 80 mass percent of micro-bead powder and 20 mass percent of silica fume, wherein the specific surface area of the micro-bead powder is not less than 900m2The activity index of/kg and 28d is not less than 90 percent, and SiO in the silica fume2The content is not less than 85%, and the 28d activity index is not less than 85%; the expansion component is formed by compounding 99 mass percent of magnesium oxide expansion agent and 1 mass percent of azodicarbonamide; the water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%; the coagulation regulating component is formed by compounding 55% of sodium gluconate and 45% of tartaric acid in percentage by mass; the suspension stabilizer is formed by compounding 5 mass percent of hydroxypropyl methyl cellulose ether and 95 mass percent of welan gum.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 3.
The additive prepared in the embodiment 3 is added into cement to prepare slurry for grouting the hollow anchor rod, and the concrete steps are as follows:
the admixture prepared in the embodiment 3 with the mass percent of 20% is mixed with the ordinary Portland 42.5 cement with the mass percent of 80%, then the water with the mass percent of 28% of the total mass of the admixture and the cement is added, and the mixture is stirred for 5min by a forced stirrer, so that the slurry for grouting the hollow anchor rod can be obtained.
Example 4
Compared with the raw material composition of the hollow anchor rod grouting material additive in the embodiment 1, the quick hardening component of the embodiment is sulphoaluminate cement clinker powder, and the rest is the same as the embodiment 1.
The preparation method of the hollow anchor rod grouting material additive is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 4.
The admixture prepared in example 4 was added to cement to prepare a slurry for grouting a hollow anchor, the same as in example 1 except that the admixture used was prepared in example 4.
Example 5
The hollow anchor rod grouting material additive comprises the following raw materials in percentage by mass:
76.11 percent of quick hardening component, 10 percent of expansion component, 8 percent of active admixture, 2.5 percent of polycarboxylic acid water reducing agent, 3 percent of coagulation regulating component, 0.35 percent of polyether modified organic silicon defoaming agent, 0.015 percent of suspension stabilizer and 0.025 percent of aluminum magnesium silicate thixotropic lubricant. The quick hardening component is formed by compounding 90 mass percent of sulphoaluminate cement clinker powder and 10 mass percent of high-alumina cement clinker powder, and the specific surface area of the two clinker powders is larger than or equal to 350m2Per kg; the active admixture is formed by compounding 80% of micro-bead powder and 20% of silica fume according to mass percentage, wherein the specific surface area of the micro-bead powder is not less than 900m2The activity index of/kg and 28d is not less than 90 percent, and SiO in the silica fume2The content is not less than 85%, and the 28d activity index is not less than 85%; the expansion component is a calcium sulphoaluminate expanding agent; the water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%; the coagulation regulating component is formed by compounding 45% of sodium gluconate and 55% of citric acid in percentage by mass; the suspension stabilizer is prepared by compounding 5% of hydroxypropyl methyl cellulose ether and 95% of welan gum according to mass percentage.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 5.
The admixture prepared in example 5 was added to cement to prepare a slurry for grouting a hollow anchor, the same as in example 1 except that the admixture used was prepared in example 5.
Example 6
The hollow anchor rod grouting material additive comprises the following raw materials in percentage by mass:
72.77% of quick-hardening component, 14% of expansion component, 7% of active admixture, 2.8% of polycarboxylic acid water reducing agent, 3% of coagulation regulating component, 0.38% of polyether modified organic silicon defoamer, 0.02% of suspension stabilizer and 0.03% of aluminum magnesium silicate thixotropic lubricant. The quick hardening component is formed by compounding 90 mass percent of sulphoaluminate cement clinker powder and 10 mass percent of high-alumina cement clinker powder, and the specific surface area of the two clinker powders is larger than or equal to 350m2Per kg; the water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%; the active admixture is micro-bead powder, wherein the specific surface area of the micro-bead powder is not less than 900m2The activity index of the catalyst per kg,28d is not less than 90%; the expansion component is formed by compounding 99% of calcium oxide expansion agent and 1% of azodicarbonamide by mass percentage; the water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%; the coagulation regulating component is formed by compounding 45% of sodium gluconate and 55% of boric acid in percentage by mass; the suspension stabilizer is formed by compounding 5% of hydroxypropyl methyl cellulose ether and 95% of welan gum according to mass percentage.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 6.
The admixture prepared in example 6 was added to cement to prepare a slurry for grouting a hollow anchor, the same as in example 1 except that the admixture used was prepared in example 6.
Example 7
Compared with the raw material composition of the hollow anchor rod grouting material additive in the embodiment 1, the coagulation adjusting component of the embodiment is sodium gluconate, and the rest is the same as the embodiment 1.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 7.
The admixture prepared in example 7 was added to cement to prepare a slurry for grouting a hollow anchor, the same as in example 1 except that the admixture used was prepared in example 7.
Example 8
The raw material composition of the additive for the grouting material of the hollow anchor rod is compared with that of the additive in the embodiment 1, the suspension stabilizer in the embodiment is hydroxypropyl methyl cellulose ether, and the rest is the same as the additive in the embodiment 1.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 8.
The admixture prepared in example 8 was added to cement to prepare a slurry for grouting a hollow anchor, the same as in example 1 except that the admixture used was prepared in example 8.
Example 9
Compared with the raw material composition of the additive for the grouting material of the hollow anchor rod in the embodiment 1, the suspension stabilizer in the embodiment is welan gum, and the balance is kept unchanged.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 9.
The admixture prepared in example 9 was added to cement to prepare a slurry for grouting a hollow anchor, the same as in example 1 except that the admixture used was prepared in example 9.
Example 10
Compared with the raw material composition of the additive for the grouting material of the hollow anchor rod in the embodiment 1, the suspension stabilizer in the embodiment is xanthan gum, and the balance is kept unchanged.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the embodiment 10.
The admixture prepared in example 10 was added to cement to prepare a slurry for grouting a hollow anchor, the same as in example 1 except that the admixture used was prepared in example 10.
Comparative example 1
The hollow anchor rod grouting material additive comprises the following raw materials in percentage by mass:
83.645% of quick hardening component, 8% of expansion component, 6% of active admixture, 1% of polycarboxylic acid water reducing agent, 1% of coagulation regulating component and 0.32% of polyether modified organic silicon defoaming agent0.015 percent of suspension stabilizer and 0.02 percent of magnesium aluminum silicate thixotropic lubricant. The quick hardening component is formed by compounding 90 mass percent of sulphoaluminate cement clinker powder and 10 mass percent of high-alumina cement clinker powder, and the specific surface area of the two clinker powders is larger than or equal to 350m2Per kg; the active admixture is formed by compounding 80% of micro-bead powder and 20% of silica fume according to mass percentage, wherein the specific surface area of the micro-bead powder is not less than 900m2The activity index of/kg and 28d is not less than 90 percent, and SiO in the silica fume2The content is not less than 85%, and the 28d activity index is not less than 85%; the expansion component is formed by compounding 99% of calcium sulphoaluminate expansion agent and 1% of azodicarbonamide according to the mass percentage; the water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%; the coagulation regulating component is formed by compounding 45% of sodium gluconate and 55% of boric acid in percentage by mass; the suspension stabilizer is formed by compounding 5% of hydroxypropyl methyl cellulose ether and 95% of welan gum according to mass percentage;
the preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the comparative example 1.
The admixture prepared in comparative example 1 was added to cement to prepare a slurry for grouting of a hollow anchor rod, the same as in example 1 except that the admixture used was prepared in comparative example 1.
Comparative example 2
The hollow anchor rod grouting material additive comprises the following raw materials in percentage by mass:
68.62% of quick-hardening component, 15% of expansion component, 10% of active admixture, 3% of polycarboxylic acid water reducing agent, 3% of coagulation regulating component, 0.33% of polyether modified organic silicon defoamer, 0.02% of suspension stabilizer and 0.03% of aluminum magnesium silicate thixotropic lubricant. The quick hardening component is formed by compounding 90 mass percent of sulphoaluminate cement clinker powder and 10 mass percent of high-alumina cement clinker powder, and the specific surface area of the two clinker powders is larger than or equal to 350m2Per kg; the active admixture is formed by compounding 80 mass percent of micro-bead powder and 20 mass percent of silica fume, wherein the specific surface area of the micro-bead powder is not less than 900m2The activity index of/kg and 28d is not less than 90 percent, and SiO in the silica fume2The content is not less than 85%, and the 28d activity index is not less than 85%; the expansion component expands 99 percent calcium sulphoaluminate according to mass percentageThe swelling agent is compounded with 1 percent of azodicarbonamide; the water reducing rate of the polycarboxylate superplasticizer mortar is not less than 20%; the coagulation regulating component is formed by compounding 45% of sodium gluconate and 55% of boric acid in percentage by mass; the suspension stabilizer is formed by compounding 5% of hydroxypropyl methyl cellulose ether and 95% of welan gum in percentage by mass;
the preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the comparative example 2.
The admixture prepared in comparative example 2 was added to cement to prepare a slurry for grouting of a hollow anchor rod, the same as in example 1 except that the admixture used was prepared in comparative example 2.
Comparative example 3
Compared with the raw material composition of the hollow anchor rod grouting material additive in the embodiment 1, the mass percentage of the quick-hardening component is 72.18%, the mass percentage of the suspension stabilizer is 0%, and the balance is kept unchanged.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the comparative example 3.
The admixture prepared in comparative example 3 was added to cement to prepare a slurry for grouting of a hollow anchor rod, the same as in example 1 except that the admixture used was prepared in comparative example 3.
Comparative example 4
Compared with the raw material composition of the hollow anchor rod grouting material additive in the embodiment 1, the active admixture is limestone powder, and the balance is kept unchanged.
The preparation method of the additive for the grouting material of the hollow anchor rod is the same as that of the embodiment 1, except that the dosage ratio of the raw materials is the same as that of the comparative example 4.
The admixture prepared in comparative example 4 was added to cement to prepare a slurry for grouting of a hollow anchor rod, the same as in example 1 except that the admixture used was prepared in comparative example 4.
The grouting materials prepared in the respective examples and comparative examples were subjected to performance testing with reference to the methods in the following standards:
the detection of the fluidity and the bleeding rate is carried out by referring to TB/T3192-. The performance test results of the grouting materials prepared in the respective examples and comparative examples are shown in table 1 below.
TABLE 1 Properties of grouting materials prepared in respective examples and comparative examples
As can be seen from the results in Table 1, the coagulation regulating components in the admixtures of examples 1-10 of the present invention can significantly improve the fluidity of the slurry, and the initial flow time can be controlled to be less than or equal to 25 seconds, and the 30min flow time can be controlled to be less than or equal to 35 seconds; the early strength can be equal to or greater than 10MPa in 2h, equal to or greater than 30MPa in 1d and equal to or greater than 75MPa in later 28 d; the expansion component can regulate and control the vertical expansion rate of the slurry in the plastic stage for 3h to be not less than 0.03%, and the limited expansion rate after hardening for 7d to be not less than 0.02%; the suspension stabilizer can ensure that the slurry has good uniformity and no bleeding layering phenomenon, and the detection result of the bleeding rate of the slurry is less than or equal to 0.05 percent.
The detection results show that the admixture has the characteristics of good fluidity of cement paste, long fluidity retention time, high early strength, plasticity stage, micro-expansion after hardening and the like, and can be used for grouting construction of hollow anchor rods.
The foregoing is only a preferred embodiment of the present invention, and it should be understood that numerous changes and modifications may be made without departing from the inventive concept thereof, which falls within the scope of the invention.
Claims (15)
1. The hollow anchor rod grouting material additive is characterized by comprising the following raw materials in percentage by mass: 70-80% of quick hardening component, 8-15% of expansion component, 6-10% of active admixture, 1-3% of polycarboxylic acid water reducing agent, 1-3% of coagulation adjusting component, 0.3-0.4% of organic silicon defoaming agent, 0.01-0.02% of suspension stabilizer and 0.02-0.03% of thixotropic lubricant.
2. The hollow anchor rod grouting material additive according to claim 1, wherein the quick hardening component is formed by compounding one or more of sulphoaluminate cement clinker powder and hyperaluminate cement clinker powder, and the specific surface area of the two clinker powders is larger than or equal to 350m2/kg。
3. The hollow anchor rod grouting material additive as claimed in claim 1 or 2, wherein the quick hardening component is formed by compounding 90 mass percent of sulphoaluminate cement clinker powder and 10 mass percent of aluminate cement clinker powder.
4. The hollow anchor rod grouting material additive according to claim 1, wherein the expansion component is formed by compounding one or more of a calcium oxide expanding agent, a magnesium oxide expanding agent and a calcium sulphoaluminate expanding agent with an azo compound.
5. The hollow anchor rod grouting material additive according to claim 1 or 4, wherein the expansion component is formed by compounding 98-99% of calcium oxide expanding agent, magnesium oxide expanding agent or calcium sulphoaluminate expanding agent and 1-2% of azodicarbonamide by mass percentage.
6. The hollow anchor rod grouting material additive of claim 1, wherein the active admixture is one or more of micro-bead powder, silica fume or superfine mineral powder.
7. The hollow anchor rod grouting material additive as claimed in claim 1 or 6, wherein the active admixture is formed by compounding 75-80% of micro-bead powder and 20-25% of superfine mineral powder or silica fume in percentage by mass.
8. The hollow anchor rod grouting material additive according to claim 1, wherein the coagulation regulating component is one or more of boric acid, sodium gluconate, tartaric acid or citric acid.
9. The hollow anchor rod grouting material additive of claim 1 or 8, wherein the coagulation regulating component is compounded by 45-55% of sodium gluconate and 45-55% of boric acid, tartaric acid or citric acid according to mass percentage.
10. The hollow anchor rod grouting material admixture according to claim 1, wherein the suspension stabilizer is one or more of biological polysaccharide gums such as hydroxypropyl methyl cellulose ether, welan gum or xanthan gum.
11. The hollow anchor rod grouting material admixture according to claim 1, wherein the thixotropic lubricant is magnesium aluminum silicate.
12. The hollow anchor rod grouting material admixture as claimed in claim 1 or 11, wherein the suspension stabilizer is compounded by 5-10% of hydroxypropyl methyl cellulose ether and 90-95% of welan gum or xanthan gum by mass percentage.
13. A method for preparing the hollow anchor rod grouting material admixture according to any one of claims 1 to 12, which is characterized by comprising the following steps: firstly, stirring the rapid hardening component, the expansion component and the active admixture according to the formula amount, and then adding the rest materials in the formula and stirring to obtain the additive of the grouting material of the hollow anchor rod.
14. The application of the additive for the grouting material of the hollow anchor rod as claimed in any one of claims 1 to 12 is characterized in that the additive is used for the grouting material of the hollow anchor rod, and the specific application method comprises the following steps: and mixing the additive and the cement, wherein the dosage ratio of the additive to the cement is 2: 8.
15. The application method according to claim 14, wherein the application method is as follows: and (3) mixing 20 mass percent of additive and 80 mass percent of cement which is added into common silicate 42.5, adding water accounting for 28 mass percent of the total mass of the additive and the cement, and stirring for 3-5min by using a forced stirrer to obtain slurry for grouting the hollow anchor rod.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647979A (en) * | 2020-12-28 | 2021-04-13 | 中国科学院武汉岩土力学研究所 | Setting-time-controllable ultra-early-strength type micro-expansion grouting material and preparation method and application thereof |
| CN114644490A (en) * | 2022-03-22 | 2022-06-21 | 南京兴佑交通科技有限公司 | Grouting material for road reinforcement and repair |
| CN114804789A (en) * | 2022-03-03 | 2022-07-29 | 武汉源锦建材科技有限公司 | Quick-setting type cement roll anchoring agent and preparation method thereof |
| CN115385615A (en) * | 2022-07-19 | 2022-11-25 | 江西省建筑技术促进中心 | Cement-based grouting material |
| CN116425492A (en) * | 2023-03-29 | 2023-07-14 | 中铁建华南建设(广州)高科技产业有限公司 | Grouting composition for shield synchronous grouting, shield synchronous grouting system, method and application |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000264706A (en) * | 1999-03-12 | 2000-09-26 | Sumitomo Osaka Cement Co Ltd | Grouting material for repairing cracked part |
| CN101830664A (en) * | 2010-04-14 | 2010-09-15 | 中国科学院武汉岩土力学研究所 | Prestressing anchoring and grouting material additive, as well as preparation method and application thereof |
| CN102992722A (en) * | 2012-12-14 | 2013-03-27 | 武汉理工大学 | Ultrahigh-strength grouting material based on iron tailing sand and cement and preparation method of grouting material |
| CN103951355A (en) * | 2014-04-02 | 2014-07-30 | 山西凯舟科技有限公司 | Ultrafine segregation-resistance injecting paste material and preparation method thereof |
| CN108558330A (en) * | 2018-05-22 | 2018-09-21 | 武汉源锦建材科技有限公司 | A kind of tunnel-liner vault band mould grouting microdilatancy grout material |
| CN108863251A (en) * | 2018-08-03 | 2018-11-23 | 夏义兵 | Slope protection anchor pole grouting agent and preparation method thereof |
| CN109467377A (en) * | 2018-11-21 | 2019-03-15 | 上海力阳道路加固科技股份有限公司 | A kind of super hardening one-component injecting paste material |
-
2020
- 2020-05-08 CN CN202010382951.5A patent/CN111574099A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000264706A (en) * | 1999-03-12 | 2000-09-26 | Sumitomo Osaka Cement Co Ltd | Grouting material for repairing cracked part |
| CN101830664A (en) * | 2010-04-14 | 2010-09-15 | 中国科学院武汉岩土力学研究所 | Prestressing anchoring and grouting material additive, as well as preparation method and application thereof |
| CN102992722A (en) * | 2012-12-14 | 2013-03-27 | 武汉理工大学 | Ultrahigh-strength grouting material based on iron tailing sand and cement and preparation method of grouting material |
| CN103951355A (en) * | 2014-04-02 | 2014-07-30 | 山西凯舟科技有限公司 | Ultrafine segregation-resistance injecting paste material and preparation method thereof |
| CN108558330A (en) * | 2018-05-22 | 2018-09-21 | 武汉源锦建材科技有限公司 | A kind of tunnel-liner vault band mould grouting microdilatancy grout material |
| CN108863251A (en) * | 2018-08-03 | 2018-11-23 | 夏义兵 | Slope protection anchor pole grouting agent and preparation method thereof |
| CN109467377A (en) * | 2018-11-21 | 2019-03-15 | 上海力阳道路加固科技股份有限公司 | A kind of super hardening one-component injecting paste material |
Non-Patent Citations (1)
| Title |
|---|
| 张彬: "《混凝土外加剂及其应用手册》", 30 November 2012, 天津大学出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647979A (en) * | 2020-12-28 | 2021-04-13 | 中国科学院武汉岩土力学研究所 | Setting-time-controllable ultra-early-strength type micro-expansion grouting material and preparation method and application thereof |
| CN114804789A (en) * | 2022-03-03 | 2022-07-29 | 武汉源锦建材科技有限公司 | Quick-setting type cement roll anchoring agent and preparation method thereof |
| CN114644490A (en) * | 2022-03-22 | 2022-06-21 | 南京兴佑交通科技有限公司 | Grouting material for road reinforcement and repair |
| CN115385615A (en) * | 2022-07-19 | 2022-11-25 | 江西省建筑技术促进中心 | Cement-based grouting material |
| CN115385615B (en) * | 2022-07-19 | 2023-10-13 | 江西省建筑技术促进中心 | Cement-based grouting material |
| CN116425492A (en) * | 2023-03-29 | 2023-07-14 | 中铁建华南建设(广州)高科技产业有限公司 | Grouting composition for shield synchronous grouting, shield synchronous grouting system, method and application |
| CN116425492B (en) * | 2023-03-29 | 2024-04-05 | 中铁建华南建设(广州)高科技产业有限公司 | Grouting composition for shield synchronous grouting, shield synchronous grouting system, method and application |
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Application publication date: 20200825 |
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