CN114773022A - High-efficiency water-dispersion-resistant synchronous grouting slurry and preparation method thereof - Google Patents
High-efficiency water-dispersion-resistant synchronous grouting slurry and preparation method thereof Download PDFInfo
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- 239000002002 slurry Substances 0.000 title claims abstract description 57
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 37
- 239000006185 dispersion Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000007613 slurry method Methods 0.000 title description 2
- 238000002156 mixing Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000003756 stirring Methods 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000010881 fly ash Substances 0.000 claims abstract description 18
- 239000011398 Portland cement Substances 0.000 claims abstract description 17
- 239000000440 bentonite Substances 0.000 claims abstract description 17
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 17
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 15
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 15
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 15
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 13
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000004281 calcium formate Substances 0.000 claims abstract description 11
- 229940044172 calcium formate Drugs 0.000 claims abstract description 11
- 235000019255 calcium formate Nutrition 0.000 claims abstract description 11
- 239000008394 flocculating agent Substances 0.000 claims abstract description 11
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 11
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 11
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 11
- 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 abstract description 11
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000292 calcium oxide Substances 0.000 claims abstract description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229940092782 bentonite Drugs 0.000 claims description 15
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 150000002085 enols Chemical class 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical group O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- 229940080314 sodium bentonite Drugs 0.000 claims description 3
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 3
- 239000010754 BS 2869 Class F Substances 0.000 claims 1
- 229920005646 polycarboxylate Polymers 0.000 claims 1
- 239000008399 tap water Substances 0.000 abstract 2
- 235000020679 tap water Nutrition 0.000 abstract 2
- 235000012245 magnesium oxide Nutrition 0.000 abstract 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- WVYSWPBECUHBMJ-UHFFFAOYSA-N 2-methylprop-1-en-1-ol Chemical compound CC(C)=CO WVYSWPBECUHBMJ-UHFFFAOYSA-N 0.000 description 2
- 229910020091 MgCa Inorganic materials 0.000 description 2
- 101100003996 Mus musculus Atrn gene Proteins 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- ONIOAEVPMYCHKX-UHFFFAOYSA-N carbonic acid;zinc Chemical compound [Zn].OC(O)=O ONIOAEVPMYCHKX-UHFFFAOYSA-N 0.000 description 2
- 229910000015 iron(II) carbonate Inorganic materials 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- ASUAYTHWZCLXAN-UHFFFAOYSA-N prenol Chemical compound CC(C)=CCO ASUAYTHWZCLXAN-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000011667 zinc carbonate Substances 0.000 description 2
- 229910000010 zinc carbonate Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 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
- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention relates to a high-efficiency water-dispersion-resistant synchronous grouting slurry and a preparation method thereof, wherein the synchronous grouting slurry comprises the following components: the preparation method of the synchronous grouting slurry comprises the following steps of portland cement, fly ash, fine sand, tap water, bentonite, an expanding agent, magnesium oxide, calcium oxide, a flocculating agent, water glass, a polycarboxylic acid water reducing agent, hydroxypropyl methyl cellulose and calcium formate, wherein the preparation method of the synchronous grouting slurry comprises the following steps: step 1, placing portland cement, fly ash, fine sand, bentonite and tap water into a slurry mixing cylinder for primary mechanical mixing and stirring, step 2, after primary mechanical mixing and stirring, adding an expanding agent, magnesium oxide, calcium formate and hydroxypropyl methyl cellulose into the slurry mixing cylinder for secondary mechanical mixing and stirring, and step 3, after secondary mechanical mixing and stirring, adding a polycarboxylic acid water reducing agent, water glass and a flocculating agent into the slurry mixing cylinder for tertiary mechanical mixing and stirring to obtain the synchronous grouting slurry, wherein the synchronous grouting slurry has water dispersion resistance.
Description
Technical Field
The invention belongs to the technical field of shield tunnel construction, and particularly relates to high-efficiency water-dispersion-resistant synchronous grouting slurry and a preparation method thereof.
Background
With the planning and implementation of underground space, the shield method is mostly applied to urban rail transit, hydraulic engineering, cable tunnels, railway engineering, pipeline laying and other projects due to the characteristics of higher degree of automation and automation, higher tunneling speed and the like, and is widely applied to the implementation of urban underground space and the construction of crossing river and transoceanic tunnels due to the characteristics of smaller safety and influence and the like.
At present, in the field of shield construction, synchronous grouting slurry is divided into single-liquid mortar, cement and water glass double-liquid slurry and inert slurry, wherein in the process of shield construction of the single-liquid mortar, the slurry is quickly diluted by underground water under the action of the underground water, and is accelerated in loss of cementing materials in an underground water rich region to cause segregation and non-solidification, and the segregation and non-solidification cannot be solidified around a duct piece in time, so that quality risks such as ground surface settlement exceeding the standard, irregular floating of the duct piece, duct piece dislocation, exceeding of ovality and the like are caused; the main materials of the cement and water glass double-liquid slurry are cement and water glass, and the double-liquid slurry is injected for a long time, so that the slurry can wrap the shield tail brush, the quality of the shield tail brush and the contact effect of the shield tail brush and the outer wall of the duct piece are influenced, and the overall quality of the shield tail brush is influenced; the main materials of the inert slurry are fly ash, sand, bentonite and water, and the purposes of filling in a short time and enhancing the stability of the stratum cannot be achieved for weak surrounding rock and the stratum with poor self-stability.
The Chinese patent application No. 202010173814.0 discloses a light slurry for shield synchronous grouting, which comprises 300 parts of cement 200-.
Based on the above, a synchronous grouting slurry with high-efficiency water dispersion resistance is required to be introduced, so that the consolidation rate and strength are guaranteed, a certain water dispersion resistance is maintained, and the stability of a stratum after grouting is enhanced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides high-efficiency synchronous grouting slurry with water dispersibility resistance, which comprises the following components in parts by weight: 200-250kg of Portland cement, 400-500kg of fly ash, 740kg of fine sand, 1200-1400kg of water, 100-120kg of bentonite, 12-18kg of expanding agent, 40-50kg of magnesium oxide, 45-55kg of calcium oxide, 20-30kg of flocculating agent, 30-40kg of water glass, 20-40kg of polycarboxylic acid water reducing agent, 30-38kg of hydroxypropyl methyl cellulose and 50-60kg of calcium formate.
Further, the synchronous grouting slurry comprises the following components in parts by weight: 225kg of portland cement, 450kg of fly ash, 720kg of fine sand, 1300kg of water, 110kg of bentonite, 15kg of an expanding agent, 45kg of magnesium oxide, 50kg of calcium oxide, 25kg of a flocculating agent, 35kg of water glass, 30kg of a polycarboxylic acid water reducing agent, 34kg of hydroxypropyl methyl cellulose and 55kg of calcium formate.
Furthermore, the Portland cement is 42.5-grade ordinary Portland cement, and the specific surface area is 339m2Per kg, the stability is 4.8.
Further, the fly ash is F-class II-grade fly ash, the fineness is 17.2%, the water demand ratio is 99%, and the loss on ignition is 5.89%.
Furthermore, the fineness modulus of the fine sand is 1.4, and the mud content is 1.2%.
Further, the bentonite is sodium bentonite, and the density of the bentonite is 200-300 kg/m3The pulping rate is 8m3T, the balance of the wet sieve is 3.3 percent.
Further, the expanding agent is a low-alkali concrete expanding agent, and the specific surface area is 370m2/kg。
Furthermore, the water glass is colloidal, and the baume degree is 5 degrees.
Further, the flocculating agent is formed by mixing 30 parts of polymeric aluminum hydroxide, 45 parts of carbonate, 20 parts of rheological agent, 15 parts of dispersing agent and 20 parts of early strength agent.
Further, the carbonate is CaCO3、Ca(HCO3)2、FeCO3、MgCa(CO3)2、ZnCO3、MgCO3、Na2CO3、 NaHCO3One or more mixtures of (a).
Further, the polycarboxylic acid water reducing agent consists of an enol polyether macromonomer, acrylic acid, maleic anhydride, deionized water and persulfate according to the mass ratio of 100:0.9:0.5:50: 150.
Further, the enol polyether macromonomer is any one of allyl alcohol polyoxyethylene ether, isobutenol polyoxyethylene ether or prenol polyoxyethylene ether.
Further, the magnesium oxide is a heavy-burned magnesium oxide industrial product, and the Bosch specific surface area is 280-350m2Kg, purity 90%.
The invention also provides a preparation method of the high-efficiency water-dispersion-resistant synchronous grouting slurry, which comprises the following steps:
step 1, putting 225kg of Portland cement, 450kg of fly ash, 720kg of fine sand, 110kg of bentonite and 1300kg of water into a slurry mixing cylinder for first mechanical mixing and stirring, wherein the time of the first mechanical mixing and stirring is 10-20 min;
step 2, after the first mechanical mixing and stirring, adding 15kg of expanding agent, 45kg of magnesium oxide, 50kg of calcium oxide, 55kg of calcium formate and 34kg of hydroxypropyl methyl cellulose into a slurry mixing cylinder for second mechanical mixing and stirring, wherein the time for the second mechanical mixing and stirring is 25-25min, and the rotating speed for the second mechanical mixing and stirring is 750-800 r/min;
and 3, after the second mechanical mixing and stirring, adding 30kg of polycarboxylic acid water reducing agent, 35kg of water glass and 25kg of flocculating agent into a slurry mixing cylinder for third mechanical mixing and stirring to obtain the synchronous grouting slurry, wherein the third mechanical mixing and stirring time is 20-30 min.
Further, the setting time of the synchronous grouting slurry in the step 3 is 270min, the bleeding rate is 6%, the consistency is 11.3cm, and the fluidity is 20.1 mm.
Compared with the prior art, the invention has the beneficial effects that: the synchronous grouting slurry has the advantages of good stability, high water dispersion resistance, quick initial setting time and the like, unstable floating drop of the duct piece is reduced in the shield tunneling process, the stratum is quickly stabilized, and the synchronous grouting slurry is ensured to have smaller loss amount under the conditions of pore diving, confined aquifer, supply, runoff and drainage of rivers, the synchronous grouting slurry prevents the duct piece from floating upwards after being solidified, protects the duct piece from excessive underground water pressure, and ensures certain safety and quality in tunnel tunneling.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail below with reference to specific embodiments.
The invention provides high-efficiency synchronous grouting slurry with water dispersibility resistance, which comprises the following components in parts by weight: 200-250kg of Portland cement, 400-500kg of fly ash, 740kg of fine sand, 1200-1400kg of water, 100-120kg of bentonite, 12-18kg of expanding agent, 40-50kg of magnesium oxide, 45-55kg of calcium oxide, 20-30kg of flocculant, 30-40kg of water glass, 20-40kg of polycarboxylic acid water reducer, 30-38kg of hydroxypropyl methyl cellulose and 50-60kg of calcium formate.
Further, the synchronous grouting slurry comprises the following components in parts by weight: 225kg of portland cement, 450kg of fly ash, 720kg of fine sand, 1300kg of water, 110kg of bentonite, 15kg of an expanding agent, 45kg of magnesium oxide, 50kg of calcium oxide, 25kg of a flocculating agent, 35kg of water glass, 30kg of a polycarboxylic acid water reducing agent, 34kg of hydroxypropyl methyl cellulose and 55kg of calcium formate.
Further, the Portland cement is 42.5-grade ordinary Portland cement, and the specific surface area is 339m2Kg, stability 4.8.
Further, the fly ash is F-class II-grade fly ash, the fineness is 17.2%, the water demand ratio is 99%, and the loss on ignition is 5.89%.
Furthermore, the fineness modulus of the fine sand is 1.4, and the mud content is 1.2%.
Further, the bentonite is sodium bentonite, and the density of the bentonite is 200-300 kg/m3The pulping rate is 8m3T, the balance of the wet sieve is 3.3 percent.
Furthermore, the expanding agent is a low-alkali concrete expanding agent with the specific surface area of 370m2/kg。
Furthermore, the water glass is colloidal, and the baume degree is 5 degrees.
Further, the flocculating agent is formed by mixing 30 parts of polymeric aluminum hydroxide, 45 parts of carbonate, 20 parts of rheological agent, 15 parts of dispersing agent and 20 parts of early strength agent.
Further, the carbonate is CaCO3、Ca(HCO3)2、FeCO3、MgCa(CO3)2、ZnCO3、MgCO3、Na2CO3、 NaHCO3One or more mixtures of (a).
Further, the polycarboxylic acid water reducing agent consists of an enol polyether macromonomer, acrylic acid, maleic anhydride, deionized water and persulfate according to the mass ratio of 100:0.9:0.5:50: 150.
Further, the enol polyether macromonomer is any one of allyl alcohol polyoxyethylene ether, isobutenol polyoxyethylene ether or prenol polyoxyethylene ether.
Further, the magnesium oxide is a heavy-burned magnesium oxide industrial product, and the Bosch specific surface area is 280-350m2Kg, purity 90%.
The invention also provides a preparation method of the high-efficiency water-dispersion-resistant synchronous grouting slurry, which comprises the following steps:
step 1, putting 225kg of portland cement, 450kg of fly ash, 720kg of fine sand, 110kg of bentonite and 1300kg of water into a slurry mixing cylinder for first mechanical mixing and stirring, wherein the time for the first mechanical mixing and stirring is 10-20 min;
step 2, after the first mechanical mixing and stirring, adding 15kg of expanding agent, 45kg of magnesium oxide, 50kg of calcium oxide, 55kg of calcium formate and 34kg of hydroxypropyl methyl cellulose into a slurry mixing cylinder for second mechanical mixing and stirring, wherein the time for the second mechanical mixing and stirring is 25-25min, and the rotating speed for the second mechanical mixing and stirring is 750-800 r/min;
and 3, after the second mechanical mixing and stirring, adding 30kg of polycarboxylic acid water reducing agent, 35kg of water glass and 25kg of flocculant into the slurry mixing cylinder, and performing third mechanical mixing and stirring to obtain the synchronous grouting slurry, wherein the third mechanical mixing and stirring time is 20-30 min.
Further, the setting time of the synchronous grouting slurry in the step 3 is 270min, the bleeding rate is 6%, the consistency is 11.3cm, and the fluidity is 20.1 mm.
Finally, it should be understood that the above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The high-efficiency synchronous grouting slurry with the water dispersibility resisting property is characterized by comprising the following components in parts by weight: 200-250kg of Portland cement, 400-500kg of fly ash, 740kg of fine sand, 1200-1400kg of water, 100-120kg of bentonite, 12-18kg of expanding agent, 40-50kg of magnesium oxide, 45-55kg of calcium oxide, 20-30kg of flocculant, 30-40kg of water glass, 20-40kg of polycarboxylic acid water reducer, 30-38kg of hydroxypropyl methyl cellulose and 50-60kg of calcium formate.
2. The high-efficiency water-dispersivity synchronous grouting slurry as claimed in claim 1, wherein the synchronous grouting slurry comprises the following components in parts by weight: 225kg of portland cement, 450kg of fly ash, 720kg of fine sand, 1300kg of water, 110kg of bentonite, 15kg of an expanding agent, 45kg of magnesium oxide, 50kg of calcium oxide, 25kg of a flocculating agent, 35kg of water glass, 30kg of a polycarboxylic acid water reducing agent, 34kg of hydroxypropyl methyl cellulose and 55kg of calcium formate.
3. The high-efficiency water-dispersion-resistant synchronous grouting slurry as claimed in claim 1, wherein the portland cement is 42.5-grade ordinary portland cement, and the specific surface area is 339m2Kg, stability 4.8.
4. The high-efficiency water-dispersivity synchronous grouting slurry as claimed in claim 1, wherein the fly ash is class F class II fly ash, the fineness is 17.2%, the water demand ratio is 99%, and the loss on ignition is 5.89%.
5. The synchronous grouting slurry with high efficiency and water dispersivity performance of claim 1, wherein the fineness modulus of the fine sand is 1.4, and the mud content is 1.2%.
6. The high-efficiency water-dispersivity synchronous grouting slurry as claimed in claim 1, wherein the bentonite is sodium bentonite, and the slurry making rate is 8m3T, the balance of the wet sieve is 3.3 percent.
7. The high-efficiency water-dispersibility-resistant synchronous grouting slurry as claimed in claim 1, wherein the expanding agent is a low-alkali concrete expanding agent, and the specific surface area of the expanding agent is 370m2/kg。
8. The high-efficiency water-dispersivity synchronous grouting slurry as claimed in claim 2, wherein the flocculating agent is formed by mixing 30 parts of polymeric aluminum hydroxide, 45 parts of carbonate, 20 parts of rheological agent, 15 parts of dispersing agent and 20 parts of early strength agent.
9. The high-efficiency water-resistant dispersion property synchronous grouting slurry as claimed in claim 2, wherein the polycarboxylate water reducer is composed of an enol polyether macromonomer, acrylic acid, maleic anhydride, deionized water and persulfate according to a mass ratio of 100:0.9:0.5:50: 150.
10. The preparation method of the high-efficiency water-dispersion-resistant synchronous grouting slurry as claimed in claim 1, characterized by comprising the following steps:
step 1, putting 225kg of Portland cement, 450kg of fly ash, 720kg of fine sand, 110kg of bentonite and 1300kg of water into a slurry mixing cylinder for first mechanical mixing and stirring, wherein the time of the first mechanical mixing and stirring is 10-20 min;
step 2, after the first mechanical mixing and stirring, adding 15kg of expanding agent, 45kg of magnesium oxide, 50kg of calcium oxide, 55kg of calcium formate and 34kg of hydroxypropyl methyl cellulose into a slurry mixing cylinder for second mechanical mixing and stirring, wherein the time of the second mechanical mixing and stirring is 25-25min, and the rotating speed of the second mechanical mixing and stirring is 750-800 r/min;
and 3, after the second mechanical mixing and stirring, adding 30kg of polycarboxylic acid water reducing agent, 35kg of water glass and 25kg of flocculating agent into a slurry mixing cylinder for third mechanical mixing and stirring to obtain the synchronous grouting slurry, wherein the third mechanical mixing and stirring time is 20-30 min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210248636.2A CN114773022A (en) | 2022-03-14 | 2022-03-14 | High-efficiency water-dispersion-resistant synchronous grouting slurry and preparation method thereof |
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| CN202210248636.2A CN114773022A (en) | 2022-03-14 | 2022-03-14 | High-efficiency water-dispersion-resistant synchronous grouting slurry and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891413A (en) * | 2010-06-18 | 2010-11-24 | 中国水利水电第三工程局有限公司 | Flocculating agent for cement high pressure jet grouting and preparation method and application thereof |
| CN103880372A (en) * | 2014-03-04 | 2014-06-25 | 北京纽维逊建筑工程技术有限公司 | Cement-based grouting material used for strengthening repairing as well as preparation method and application thereof |
| US20180290923A1 (en) * | 2017-04-07 | 2018-10-11 | Jiahuan Yu | Underwater Non-Dispersible Quick-Setting and Rapid-Hardening Cement-Based Composite Material and Preparation Method and Application Thereof |
| CN113003999A (en) * | 2021-02-22 | 2021-06-22 | 中铁隧道集团二处有限公司 | Synchronous grouting slurry for shield construction of water-rich stratum and preparation method thereof |
-
2022
- 2022-03-14 CN CN202210248636.2A patent/CN114773022A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891413A (en) * | 2010-06-18 | 2010-11-24 | 中国水利水电第三工程局有限公司 | Flocculating agent for cement high pressure jet grouting and preparation method and application thereof |
| CN103880372A (en) * | 2014-03-04 | 2014-06-25 | 北京纽维逊建筑工程技术有限公司 | Cement-based grouting material used for strengthening repairing as well as preparation method and application thereof |
| US20180290923A1 (en) * | 2017-04-07 | 2018-10-11 | Jiahuan Yu | Underwater Non-Dispersible Quick-Setting and Rapid-Hardening Cement-Based Composite Material and Preparation Method and Application Thereof |
| CN113003999A (en) * | 2021-02-22 | 2021-06-22 | 中铁隧道集团二处有限公司 | Synchronous grouting slurry for shield construction of water-rich stratum and preparation method thereof |
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Application publication date: 20220722 |