CN107619236B - A kind of high-performance superfine cement based grouting material and its application for microfissure and powder fine sand soil grouting treatment - Google Patents

A kind of high-performance superfine cement based grouting material and its application for microfissure and powder fine sand soil grouting treatment Download PDF

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CN107619236B
CN107619236B CN201710937815.6A CN201710937815A CN107619236B CN 107619236 B CN107619236 B CN 107619236B CN 201710937815 A CN201710937815 A CN 201710937815A CN 107619236 B CN107619236 B CN 107619236B
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parts
grouting
superfine cement
cement base
fine sand
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CN107619236A (en
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李术才
沙飞
刘人太
李召峰
张庆松
杨磊
刘浩杰
马晨阳
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Shandong University
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Abstract

The invention discloses a kind of high-performance superfine cement based grouting materials and its application for microfissure and powder fine sand soil grouting treatment, it is grouped as by the group of following parts by weight: 50~79 parts of Portland clinker, 19~48 parts of supplementary cementitious material, 2~7 parts of desulfurized gypsum;Wherein, the supplementary cementitious material is grouped as by the group of following parts by weight: 25~57 parts of slag, 8~21 parts of steel slag, 18~36 parts of flyash, 6~12 parts of agstone, 1~8 part of silicon ash, 2.5-12.8 parts of high-performance composite regulator;The high-performance composite regulator, is grouped as by the group of following parts by weight: 5~16 parts of sodium hydroxide, 4~12 parts of sodium metasilicate, 4~14 parts of potassium metaaluminate, 12~21 parts of calcium chloride, 11~18 parts of lithium chloride, 4~12 parts of triethanolamine, 21~27 parts of alum, aluminum sulfate 18~29,0.2-1.5 parts of hydroxypropyl methyl cellulose, 0.1~3.0 part of sticky polymers, 0~0.8 part of polypropylene fibre, 0.5-3.0 parts of super plasticizer;The sticky polymers are acrylate polymer or ethylene-vinyl acetate copolymer.

Description

It is a kind of to be infused for the high-performance superfine cement base of microfissure and powder fine sand soil grouting treatment Pulp material and its application
Technical field
The invention belongs to civil engineering grouting reinforcement technique field, it is related to a kind of high-performance superfine cement-based material and its answers With, in particular to the high-performance superfine cement base combined casting material of a kind of geotechnical engineering grouting for water blocking Reinforcement, and should Application of the material in microfissure rock mass and micropore powder fine sand soil Grouting engineering.
Background technique
The Belt and Road strategy and policy guide under, in country variant and different zones, China will carry out on a large scale tunnel, The large-scale construction projects such as water conservancy and hydropower, subway, mine and traffic infrastructure, the geological conditions that the engineering phase of building is faced are more next It is more complicated.Wherein, microfissure rock mass, micro chink concrete structure and micropore powder fine sand soil are poor with the property infused, bearing capacity is poor And the disadvantages of fragile structure, it is difficult to effectively be administered, easily cause the major disasters such as prominent water burst, structural instability and landslide, no Only delay the duration, influences project benefit and economic benefit, but also serious personal's injures and deaths will be caused, seriously threaten the life of the people With property safety, baneful influence is generated to social benefit and environmental benefit.
Slip casting as tunnels and underground engineering dash forward discharge disaster administer effective means, it is more and more extensive be applied to tunnel and Underground engineering water blockoff and Reinforcement.In grouting for water blocking and reinforcing engineering, rock mass microfissure, deep hole micro-crack, structure micro chink And powder fine sand soil is grouting for water blocking and reinforces emphasis and difficult point, and accounts for sizeable proportion, belongs to global problem.It is generally believed that When crack, crack and pore-size are at least more than suspension particle three times, the suspension liquid grout could be considered, otherwise the property infused It does not reach requirement, slip casting effect is very poor.For width < 0.5mm microfissure in geotechnical engineering and microcrack and partial size < 0.6mm Powder fine sand soil, although the chemical slip casting material property infused is higher, its price is high, pollution environment, formula are complicated, corrosion resistance difference and Durability is poor, and most of chemical slip casting materials to underground water have certain toxicity, so such injecting paste material application by To very big limitation.Ordinary cement material is although at low cost, abundance, durability are preferable and easy to use, but exists simultaneously It cannot be efficiently injected into, cannot effectively spread, effectively cannot fill and reinforce, slurries pumping stability is poor and Seed harvest volume retraction The disadvantages of, it cannot be guaranteed that preferable slip casting effect.The water resistant of superfine cement it is erodible it is poor, corrosion resistance is poor, rheological characteristic is poor, after Phase intensity is low, durability is poor and higher cost, cannot meet microfissure rock mass and micropore powder fine sand soil Grouting engineering requirement.On Material width < 0.5mm microfissure and during partial size < 0.6mm powder fine sand soil slip casting in geotechnical engineering is stated, synthesis is examined Consider, satisfactory state is not achieved in application effect.
For width < 0.2mm, 0.2~0.5mm in geotechnical engineering and 0.5~1.0mm rock mass microfissure and partial size < The micropore powder fine sand soil grouting treatment of 0.075mm, 0.075~0.15mm, 0.15~0.30mm and 0.3~0.6mm, need one The kind property infused is high, gelling time is controllable, early stage later strength height, volume not retraction, consistency is high, impermeability is good, durability is high, Environmental-friendly and lower-cost novel high-performance superfine cement base combined casting material.
Summary of the invention
In order to solve the technical problems existing in the prior art, the object of the present invention is to provide one kind to be used for microfissure rock mass And the superfine cement base grouting material of powder fine sand soil grouting treatment, this kind of material property infused is high, diffusivity is strong, pumping stability Good, gelling time is controllably, Seed harvest early stage later strength height, volume not retraction, effect of prestressed is good, consistency is high, impermeability is good, Durability is high, environmental-friendly and cost is relatively low, it can be ensured that microfissure rock mass and the excellent slip casting effect of micropore powder fine sand soil.It can By the superfine cement base grouting material be named as CG-1 or HPMCG or HPUCG or HPSCG or MHPCG or UHPCG or SHPCG or MCG or UCG or SCG or MCCG or HPMCCG or MHPCCG or HPUCCG or UHPCCG or HPSCCG or SHPCCG.
Another object of the present invention is to provide this kind of superfine cement base grouting material in microfissure rock mass and powder fine sand soil slip casting Application in improvement.
In order to solve the above technical problems, the technical solution of the present invention is as follows:
It is a kind of for microfissure rock mass and the superfine cement base grouting material of powder fine sand soil grouting treatment, by following parts by weight Group be grouped as: 50~79 parts of Portland clinker, 19~48 parts of supplementary cementitious material, 2~7 parts of desulfurized gypsum;Wherein,
The supplementary cementitious material is grouped as by the group of following parts by weight: 25~57 parts of slag, 8~21 parts of steel slag, and fine coal 18~36 parts, 6~12 parts of agstone, 1~8 part of silicon ash, 2.5-12.8 parts of high-performance composite regulator of ash;
The high-performance composite regulator, is grouped as by the group of following parts by weight: 5~16 parts of sodium hydroxide, sodium metasilicate 4~ 12 parts, 4~14 parts of potassium metaaluminate, 12~21 parts of calcium chloride, 11~18 parts of lithium chloride, 4~12 parts of triethanolamine, alum 21~27 Part, aluminum sulfate 18~29,0.2-1.5 parts of hydroxypropyl methyl cellulose, 0.1~3.0 part of sticky polymers, polypropylene fibre 0~ 0.8 part, 0.5-3.0 parts of super plasticizer;
The sticky polymers are acrylate polymer or ethylene-vinyl acetate copolymer.
Portland clinker is good hydraulic cementing materials, and hydrated product mainly has hydrated calcium silicate gel (CSH Gel), the mineral such as entringite and calcium hydroxide, CSH gel is the main source of cement consolidating strength, in calcium hydroxide water not Disconnected dissolution and react with etchant etc. be principal element that Behavior of Hardened Cement Paste macro property is degenerated, the present invention is by using auxiliary gelling material Material is reacted with calcium hydroxide, efficient CSH gel is largely converted by extra aquation calcium hydroxide, to improve unit volume Effective hydrated minerals quantity and Seed harvest consistency.
For desulfurized gypsum for preventing Portland clinker from coagulating fastly, desulfurized gypsum also can increase calculus by autoreactivity Body consistency, while industrial by-products desulfurized gypsum enough reduces material cost, is conducive to cycle development.
Under alkaline condition, slag, steel slag, flyash, silicon ash and agstone can promote mutually in supplementary cementitious material Reactivity, interreaction after each component active mineral aquation, while with the calcium hydroxide sustained response after clinker hydration;These The long-term continuous growth that can ensure effective hydrated minerals ensure that cement Seed harvest later strength constantly increases, Neng Gouti Impermeability, the water resistant of high reinforcing body be erodible, corrosion resistance and durability.
Sodium hydroxide and sodium metasilicate can be improved the gelation activity of supplementary cementitious material in high-performance composite regulator, effectively Improve the hydration reaction degree of supplementary cementitious material;Sodium metasilicate and potassium metaaluminate being capable of Effective Regulation slurries gelling times;Chlorine Changing calcium, lithium chloride and triethanolamine can be improved cement Seed harvest and reinforcing body early strength, make up supplementary cementitious material early period The low disadvantage of consolidating strength;Alum is reacted with aluminum sulfate by gypsum etc., material Seed harvest and reinforcing body can be made to have micro- Dilatancy has the beneficial effect for improving reinforcing body interface binding intensity;Super plasticizer can be mentioned with hydroxypropyl methyl cellulose The dispersibility of particle in high slurry system, and can be improved slurries pumping stability, it is not easy isolation layering, can be improved simultaneously Seed harvest retention ratio under the conditions of slurries rich water;Polymer and polypropylene fibre can be improved the fracture toughness of cement-based material, subtract Few Seed harvest and the harmful obvious crack number of reinforcing body.
Preferably, the above-mentioned superfine cement base grouting material for microfissure rock mass and powder fine sand soil grouting treatment, by with The group of lower parts by weight is grouped as: 52~76 parts of Portland clinker, 21~45 parts of supplementary cementitious material, desulfurized gypsum 3.0~ 6.5 part;Wherein,
The supplementary cementitious material is grouped as by the group of following parts by weight: 28~56 parts of slag, 10~19 parts of steel slag, and powder 21~35 parts of coal ash, 7~11 parts of agstone, 2~7 parts of silicon ash, 3.2-11.9 parts of high-performance composite regulator;
The high-performance composite regulator, is grouped as by the group of following parts by weight: 6~15 parts of sodium hydroxide, sodium metasilicate 8~ 11 parts, 5~14 parts of potassium metaaluminate, 13~20 parts of calcium chloride, 12~16.5 parts of lithium chloride, 5~11 parts of triethanolamine, alum 21~ 26 parts, aluminum sulfate 19~28,0.25-1.4 parts of hydroxypropyl methyl cellulose, 0.2~2.8 part of sticky polymers, polypropylene fibre 0 ~0.6 part, 0.8-2.6 parts of super plasticizer.
Preferably, the sticky polymers are acrylate polymer or ethylene-vinyl acetate copolymer.
Acrylate polymer and ethylene-vinyl acetate copolymer can react with hydrolysis product of cement, generate Polymer with space net structure-cement crosslinked increases substantially aquation and generates the globality of product, flexibility and hold Loading capability;Acrylate polymer can be improved polymer cement interface waterproofness and waterproof effect in engineering;Ethyl vinyl acetate Ethylene copolymer and cement interface adhesive property are preferable, can be improved interface bearing capacity.
Preferably, length≤3mm of the polypropylene fibre.
Polypropylene fibre length is in injecting paste material if more than 3mm.The property infused of slurries will be substantially reduced, is unfavorable for slurries Effectively diffusion, while will also decrease slip casting effect and validity.
Preferably, the super plasticizer is polycarboxylate water-reducer or naphthalene water reducer, preferably polycarboxylate water-reducer.
Polycarboxylate water-reducer is high efficiency water reducing agent of new generation, can effectively improve cement granules in slurries with less content In dispersibility, effect highly significant.
Preferably, the Portland clinker is the low alkali portland cement clinker for meeting GB/T 21372-2008.
Preferably, the slag is the ground granulated blast furnace slag for meeting GB/T 18046-2008.
Preferably, the steel slag is the steel slag for meeting GB/T20491-2006.
Preferably, the flyash is the flyash for meeting GB/T 1596-2017.
Preferably, the agstone is to meet GBT 30190-2013 and calcium carbonate mass fraction not less than 80%, oxygen Change the agstone that aluminium mass fraction is not more than 2.0%.
Preferably, the desulfurized gypsum is the desulfurized gesso of flue gas for meeting JC/T 2074-2011.
Preferably, SiO in the silicon ash2Content is greater than 97%.
Preferably, the sodium hydroxide is to meet the industry of GB/T 209-2006 without water sodium hydroxide;The sodium metasilicate is The sodium silicate solids of GB T4209-2008.
Preferably, the calcium chloride is the anhydrous industrial solid calcium chloride for meeting GB/T 26520-2011;The lithium chloride For the anhydrous industrial solid lithium chloride for meeting GB/T 10575-2007.
Preferably, the triethanolamine is the industrial liquid triethanolamine for meeting HG/T 3268-2002.
Preferably, the aluminum sulfate is the solid industrial aluminum sulfate for meeting HG/T 2225-2001.
Preferably, the industrial hydroxypropyl methyl cellulose that the viscosity of the hydroxypropyl methyl cellulose is 100,000.
Preferably, the sticky polymers are the acrylate polymer or ethyl vinyl acetate for meeting GBT 23445-2009 Ethylene copolymer.
Preferably, the super plasticizer is the polycarboxylate water-reducer or naphthalene water reducer for meeting GB8076-2008.
It is a kind of for microfissure rock mass and the superfine cement base grouting serous fluid of powder fine sand soil grouting treatment, the superfine cement Base grouting material and water are by the ratio of mud for 0.8-3.0 is stirred and obtains.
Preferably, the revolving speed of stirring is 1000-3000r/min, and the time of stirring is 10-30min.
Microfissure rock of the above-mentioned superfine cement base grouting serous fluid in width < 0.2mm, 0.2~0.5mm and 0.5~1.0mm Application in body grouting treatment, using single fluid grouting, grouting pressure is no more than 0.8MPa.Diffusion works well.
Above-mentioned superfine cement base grouting serous fluid is in the crack rock that width is 1.0~3.0mm, 3.0~5.0mm and > 5.0mm Application in the grouting for water blocking and Reinforcement of body.When slip casting closes to an end, slurries gel time is adjusted, slurries is made to inject fine fisssure Rear autocoagulation is sufficient filling with after gap or microcrack.
Above-mentioned superfine cement base grouting serous fluid partial size < 0.075mm, 0.075~0.15mm, 0.15~0.30mm and Application in the powder fine sand soil of 0.30~0.6mm, using single fluid grouting, grouting pressure is no more than 0.8MPa.Diffusion effect Well.
Above-mentioned superfine cement base grouting serous fluid is 0.6~1.0mm, 1.0~2.0mm and > 2.0mm medium coarse sand soil in partial size Grouting for water blocking and Reinforcement in application.It can very well be injected in medium coarse sand soil, and slip casting effect is good.
Above-mentioned superfine cement base grouting serous fluid is in the environment of water flow velocity > 30m/min in grouting for water blocking and Reinforcement Using using dual slurry slip casting, dual slurry is biliquid of the superfine cement base grouting serous fluid of the present invention in conjunction with waterglass The volume ratio of slurry, the superfine cement base grouting serous fluid and waterglass is 1:1~5:1.
Preferably, the volume ratio of superfine cement base grouting serous fluid and waterglass is 2:1~3:1.
By Double-liquid mud-injection pump, in slip casting orifice position or deep slip casting region, biliquid mixing slip casting is carried out by volume; By dual slurry application attestation, dual slurry is under the extreme harsh environment of dynamic water flow velocity > 30m/min, dual slurry calculus of the present invention 98% or more body retention ratio.
The beneficial effects of the invention are as follows
(1) high-performance superfine cement based grouting material distinguishing feature of the invention is that the property infused is high, viscosity is small and flowing is expanded It is big to dissipate property;There is preferable stability, water-retaining property and pumping simultaneously;Under rich water or river channels, the water resistant of slurries is dispersed Property and Seed harvest retention ratio it is higher (average 90% or more);Gelling time controlled range is 10~240 minutes;Material Seed harvest and Reinforcing body has micro-expansibility (0.1~0.6%), and slurry-rock, slurry-sand and slurry-Soil Interface adhesion strength are high.Solves traditional water The mud base grouting material property infused is poor, easily isolation layering, be difficult in dynamic water to retain, gelling time is uncontrollable, Seed harvest volume retraction And interface binding intensity it is low the problems such as.
(2) high-performance superfine cement based grouting material of the invention especially suitable for width < 0.2mm in geotechnical engineering, 0.2~0.5mm and 0.5~1.0mm microfissure rock mass and partial size < 0.075mm, 0.075~0.15mm, 0.15~0.30mm And the grouting for water blocking and Reinforcement of the micropore 0.30~0.6mm powder fine sand soil, it is innovatively microfissure rock mass and micropore The closure and reinforcing of powder fine sand soil provide the novel high-performance superfine cement base grouting material of high standard low cost;Material of the present invention Material can be particularly well applicable in simultaneously 1.0~3.0mm, 3.0~5.0mm and the larger crack rock of > 5.0mm and 0.6~ The grouting for water blocking and Reinforcement of 1.0mm, 1.0~2.0mm and the larger hole medium coarse sand of > 2.0mm, slip casting effect are ideal.
(3) 28 days intensity of cement-based material of the present invention is 21~52MPa, and 90 days intensity is up to 56MPa, 180 days intensity Up to 60MPa;3 days Seed harvest impermeability pressure >=4.0MPa, 28 days Seed harvest impermeability pressure >=5.0MPa;Water resistant is erodible By force, anti-ion erosion is strong, and durability is strong.It solves low conventional cement base grouting material early strength, later strength retraction, resist The problems such as infiltration property is low, water resistant is erodible poor, anti-ion erosion is poor and durability is poor, material overall process of the present invention does not generate not only Solid waste, and can make full use of solid waste has that environment-protecting and non-poisonous, cost is relatively low and the advantages such as with short production cycle.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Embodiment 1
1, component and mass ratio are as follows: 60 parts of Portland clinker, 35.5 parts of supplementary cementitious material, 4.5 parts of desulfurized gypsum; Wherein, supplementary cementitious material each component parts by weight are as follows: 43 parts of slag, 10.5 parts of steel slag, and 32 parts of flyash, agstone 10 Part, 4.5 parts of silicon ash, 9.7 parts of high-performance composite regulator are mixed outside;Each component parts by weight are as follows in high-performance composite regulator: 8 parts of sodium hydroxide, 7 parts of sodium metasilicate, 6 parts of potassium metaaluminate, 13.3 parts of calcium chloride, 12.8 parts of lithium chloride, 8 parts of triethanolamine, alum 21 parts, aluminum sulfate 20,0.29 part of hydroxypropyl methyl cellulose, 2.1 parts of acrylate polymer, 0.11 part of polypropylene fibre is (long Degree≤3mm), 1.4 parts of polycarboxylate water-reducer.
2, grouting treatment application: the cement based grouting material grain diameter d95And d10017 and 21 μm are controlled as, than Surface area control is 970m2/kg;The single slurry ratio of mud is 1.2:1, carries out the high-speed uniform stirring of 1500r/min, mixing time Control is 20min;High-performance superfine cement base combined casting material of the present invention is used for Tunnel Engineering powder fine sand soil and microfissure The grouting treatment of rock mass, grouting pressure are no more than 0.7MPa, and diffusion, filling and injection effect are good.
3, index parameter such as the following table 1:
Table 1
Embodiment 2
1, component and mass ratio are as follows: 65 parts of Portland clinker, 30 parts of supplementary cementitious material, 5 parts of desulfurized gypsum;Its In, supplementary cementitious material each component parts by weight are as follows: 45 parts of slag, 8.5 parts of steel slag, and 33.5 parts of flyash, agstone 9 Part, 4 parts of silicon ash, 8.7 parts of high-performance composite regulator are mixed outside;Each component parts by weight are as follows in high-performance composite regulator: hydrogen 7 parts of sodium oxide molybdena, 8 parts of sodium metasilicate, 7 parts of potassium metaaluminate, 13.6 parts of calcium chloride, 12.8 parts of lithium chloride, 7 parts of triethanolamine, alum 21 Part, aluminum sulfate 20,0.12 part of hydroxypropyl methyl cellulose, 1.9 parts of ethylene-vinyl acetate copolymer, 0.08 part of polypropylene fibre (length≤3mm), 1.5 parts of polycarboxylate water-reducer.
2, grouting treatment application: the cement based grouting material grain diameter d95And d100It is controlled as 16.5 and 20.5 μ M, specific surface area control are 970m2/kg;The single slurry ratio of mud is 1.5:1, carries out the high-speed uniform stirring of 1200r/min, stirring Time control is 20min;High-performance superfine cement base combined casting material of the present invention is used for subway micropore powder fine sand soil, micro- Cracked concrete structure and microfissure rock mass and grouting treatment, grouting pressure be no more than 0.6MPa, diffusion, filling and note It is fine to enter effect.
3, index parameter such as the following table 2:
Table 2
Embodiment 3
1, component and mass ratio are as follows: 65 parts of Portland clinker, 30 parts of supplementary cementitious material, 5 parts of desulfurized gypsum;Its In, supplementary cementitious material each component parts by weight are as follows: 42 parts of slag, 9 parts of steel slag, and 36 parts of flyash, 9 parts of agstone, silicon 4 parts of ash, mixes 8.9 parts of high-performance composite regulator outside;Each component parts by weight are as follows in high-performance composite regulator: sodium hydroxide 7 parts, 8 parts of sodium metasilicate, 7 parts of potassium metaaluminate, 13.6 parts of calcium chloride, 12.8 parts of lithium chloride, 7 parts of triethanolamine, 21 parts of alum, sulfuric acid Aluminium 20,0.12 part of hydroxypropyl methyl cellulose, 1.98 parts of ethylene-vinyl acetate copolymer, 1.5 parts of polycarboxylate water-reducer.
2, grouting treatment application: the cement based grouting material grain diameter d95And d100It is controlled as 16.5 and 20.5 μ M, specific surface area control are 970m2/kg;The single slurry ratio of mud is 1.2:1, carries out the high-speed uniform stirring of 2000r/min, stirring Time control is 20min;It is micro- that high-performance superfine cement base combined casting material of the present invention is used for mine microfissure rock mass, deep hole The grouting treatment of crackle and micropore sandstone, grouting pressure are no more than 0.8MPa, and diffusion, filling and injection effect are fine.
3, index parameter such as the following table 3:
Table 3
Novel high-performance superfine cement base grouting material according to the present invention, the slurries property infused is high, pumping stability is good, Gelling time is controllable, Seed harvest and reinforcing body early stage later strength height, volume not retraction, effect of prestressed is good, consistency is high, impervious Property is good, durability is high, environment-protecting and non-poisonous and cost is relatively low.
Cement based grouting material of the present invention can extensively and be used successfully to tunnels and underground engineering width < 0.2mm, 0.2~ The water blockoff and Reinforcement of 0.5mm and 0.5~1.0mm microfissure rock mass, and can be successfully applied to 1.0~3.0mm, 3.0~ The grouting treatment of 5.0mm and > 5.0mm crack rock.
Cement based grouting material of the present invention can extensively and be used successfully to tunnels and underground engineering partial size < 0.075mm, The powder fine sand soil water blockoff and Reinforcement of 0.075~0.15mm, 0.15~0.30mm and 0.30~0.6mm, and can successfully answer For 0.6~1.0mm, 1.0~2.0mm and the grouting treatment of > 2.0mm medium coarse sand.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.

Claims (14)

1. a kind of for microfissure rock mass and the superfine cement base grouting material of powder fine sand soil grouting treatment, it is characterised in that: by The group of following parts by weight is grouped as: 50~79 parts of Portland clinker, 19~48 parts of supplementary cementitious material, and desulfurized gypsum 2~7 Part;Wherein,
The supplementary cementitious material is grouped as by the group of following parts by weight: 25~57 parts of slag, 8~21 parts of steel slag, and flyash 18 ~36 parts, 6~12 parts of agstone, 1~8 part of silicon ash, 2.5-12.8 parts of high-performance composite regulator;
The high-performance composite regulator, is grouped as by the group of following parts by weight: 5~16 parts of sodium hydroxide, sodium metasilicate 4~12 Part, 4~14 parts of potassium metaaluminate, 12~21 parts of calcium chloride, 11~18 parts of lithium chloride, 4~12 parts of triethanolamine, alum 21~27 Part, aluminum sulfate 18~29,0.2-1.5 parts of hydroxypropyl methyl cellulose, 0.1~3.0 part of sticky polymers, polypropylene fibre 0~ 0.8 part, 0.5-3.0 parts of super plasticizer;
The sticky polymers are acrylate polymer or ethylene-vinyl acetate copolymer.
2. it is used for the superfine cement base grouting material of microfissure rock mass and powder fine sand soil grouting treatment according to claim 1, It is characterized by: being grouped as by the group of following parts by weight: 52~76 parts of Portland clinker, supplementary cementitious material 21~45 Part, 3.0~6.5 parts of desulfurized gypsum;Wherein,
The supplementary cementitious material is grouped as by the group of following parts by weight: 28~56 parts of slag, 10~19 parts of steel slag, and flyash 21~35 parts, 7~11 parts of agstone, 2~7 parts of silicon ash, 3.2-11.9 parts of high-performance composite regulator;
The high-performance composite regulator, is grouped as by the group of following parts by weight: 6~15 parts of sodium hydroxide, sodium metasilicate 8~11 Part, 5~14 parts of potassium metaaluminate, 13~20 parts of calcium chloride, 12~16.5 parts of lithium chloride, 5~11 parts of triethanolamine, alum 21~26 Part, aluminum sulfate 19~28,0.25-1.4 parts of hydroxypropyl methyl cellulose, 0.2~2.8 part of sticky polymers, polypropylene fibre 0~ 0.6 part, 0.8-2.6 parts of super plasticizer.
3. the superfine cement base slip casting material according to claim 1 or claim 2 for being used for microfissure rock mass and powder fine sand soil grouting treatment Material, it is characterised in that: the sticky polymers are acrylate polymer or ethylene-vinyl acetate copolymer.
4. it is used for the superfine cement base grouting material of microfissure rock mass and powder fine sand soil grouting treatment according to claim 3, It is characterized by: length≤3mm of the polypropylene fibre.
5. it is used for the superfine cement base grouting material of microfissure rock mass and powder fine sand soil grouting treatment according to claim 3, It is characterized by: the super plasticizer is polycarboxylate water-reducer or naphthalene water reducer.
6. it is used for the superfine cement base grouting material of microfissure rock mass and powder fine sand soil grouting treatment according to claim 5, It is characterized by: the super plasticizer is polycarboxylate water-reducer.
7. the superfine cement base slip casting material according to claim 1 or claim 2 for being used for microfissure rock mass and powder fine sand soil grouting treatment Material, it is characterised in that: the Portland clinker is the low alkali portland cement clinker for meeting GB/T 21372-2008;
The slag is the ground granulated blast furnace slag for meeting GB/T 18046-2008;
The steel slag is the steel slag for meeting GB/T20491-2006;
The flyash is the flyash for meeting GB/T 1596-2017;
The agstone is to meet GBT 30190-2013 and calcium carbonate mass fraction not less than 80%, quality of alumina score Agstone no more than 2.0%;
The desulfurized gypsum is the desulfurized gesso of flue gas for meeting JC/T 2074-2011;
SiO in the silicon ash2Content is greater than 97%;
The sodium hydroxide is to meet the industry of GB/T 209-2006 without water sodium hydroxide;The sodium metasilicate is GB T 4209- 2008 sodium silicate solids;
The calcium chloride is the anhydrous industrial solid calcium chloride for meeting GB/T 26520-2011;The lithium chloride is to meet GB/T The anhydrous industrial solid lithium chloride of 10575-2007;
The triethanolamine is the industrial liquid triethanolamine for meeting HG/T 3268-2002;
The aluminum sulfate is the solid industrial aluminum sulfate for meeting HG/T 2225-2001;
The industrial hydroxypropyl methyl cellulose that the viscosity of the hydroxypropyl methyl cellulose is 100,000;
The sticky polymers are the acrylate polymer or ethylene-vinyl acetate copolymer for meeting GBT 23445-2009;
The super plasticizer is the polycarboxylate water-reducer or naphthalene water reducer for meeting GB8076-2008.
8. a kind of for microfissure rock mass and the superfine cement base grouting serous fluid of powder fine sand soil grouting treatment, it is characterised in that: power Benefit requires any superfine cement base grouting material of 1-7 and water by the ratio of mud for 0.8-3.0 is stirred and obtains,
The revolving speed of stirring is 1000-3000r/min, and the time of stirring is 10-30min.
9. superfine cement base grouting serous fluid according to any one of claims 8 is in width < 0.2mm, 0.2~0.5mm and 0.5~1.0mm Application in the improvement of microfissure grouting in rock mass, it is characterised in that: use single fluid grouting, grouting pressure is no more than 0.8MPa.
10. superfine cement base grouting serous fluid according to any one of claims 8 is 1.0~3.0mm, 3.0~5.0mm and > in width Application in the grouting for water blocking and Reinforcement of the crack rock of 5.0mm.
11. superfine cement base grouting serous fluid according to any one of claims 8 partial size < 0.075mm, 0.075~0.15mm, 0.15~ Application in the powder fine sand soil of 0.30mm and 0.30~0.6mm, it is characterised in that: use single fluid grouting, grouting pressure is no more than 0.8MPa。
12. superfine cement base grouting serous fluid according to any one of claims 8 is 0.6~1.0mm, 1.0~2.0mm and > in partial size Application in the grouting for water blocking and Reinforcement of 2.0mm medium coarse sand soil.
13. superfine cement base grouting serous fluid according to any one of claims 8 in the environment of water flow velocity > 30m/min grouting for water blocking with plus Gu the application in administering, it is characterised in that: use dual slurry slip casting, dual slurry is superfine cement base described in any one of claim 10 note The volume ratio of dual slurry of the slurry slurries in conjunction with waterglass, the superfine cement base grouting serous fluid and waterglass is 1:1~5:1.
14. application according to claim 13, it is characterised in that: the volume ratio of superfine cement base grouting serous fluid and waterglass For 2:1~3:1.
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CN109681244B (en) * 2019-03-07 2021-03-19 安徽马钢矿业资源集团有限公司 Grouting method for micro-fractured rock mass
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