CN103880377B - A kind of geo-polymer grouting material and preparation method thereof - Google Patents
A kind of geo-polymer grouting material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of geo-polymer grouting material and preparation method thereof.It is obtained preparing inorganic silicate composite by slag 71～91 parts, flyash 66～70 parts, alkali-activator 16～28 parts and retarder 0.5～1.6 parts；It is mixed with according to the proportion of 0.30～0.38 by inorganic silicate composite and water the most again and forms.The present invention has the features such as good fluidity, early strength height, ungauged regions, good endurance, setting time and intensity is adjustable, compared with tradition geology polymer material, this material is the composite mixed by various powder raw materials, scene adds water to stir and i.e. can use, preparation technology is simple, low cost, easy to operate, can be widely applied to Identification Beneath Concrete Slabs grouting, cement concrete cracks repairing, foot bolt fastening, equipment installation, the pre-stressed bridge cementation of fissures, engineering first-aid repair, reinforcing etc..
Description
Technical field
The invention belongs to inorganic composite materials technical field, relate to a kind of geo-polymer grouting material and preparation method thereof.
Background technology
Geo-polymer is to be reacted, with highly basic or highly basic silicate solutions, the class novel aluminum silicate inorganic Binder Materials generated by activated aluminosilicate material (metakaolin, clay, slag, flyash, silicon ash etc.).French famous scientist Davidovits in 1978 is geo-polymer the reaction mechanism proposing geo-polymer this material designation first.Geo-polymer, owing to having the advantages such as high-early-strength, corrosion resistance, environmental protection, high temperature resistant, good endurance, is widely used in the fields such as construction material, traffic repairing, heavy metal ion adsorbed, nuclear waste disposal.In recent years, owing to cement-based grouting material and chemical grouting material cost are high, corrosion-resistant undesirable with flushing resistance, geo-polymer starts to apply at the aspect such as treatment of soft foundation, tunnel grouting, pre-stressed bridge grouting, measures of cracks on concrete pavement reparation and plat-bottom escape process.But at present geo-polymer grouting material there is also following some shortcomings, limit the geo-polymer application in grouting material field:
The form of alkali-activator determines the unstable properties of geo-polymer grouting material, and construction technical requirement is high.At present, alkali-activator is mainly liquid, including low modulus sodium silicate solution, low modulus KP1, NaOH solution or KOH solution.Reporting according to document both domestic and external, liquid soluble glass is prepared the modulus of geo-polymer and is generally below 2.0, and along with the increase of the time of storage, in waterglass, the degree of polymerization of silicate ion is continually changing, bigger to the performance impact of geology polymer grout-ing material.If the geo-polymer prepared by NaOH solution or KOH solution is lower than geo-polymer intensity prepared by waterglass, range of application is narrow.
Geo-polymer prepared by liquid base exciting agent is the easy accumulation of salt in the surface soil in humid air, affects the durability of geo-polymer.
The solid waste such as slag, flyash, slag have been utilized to prepare the report of geo-polymer grouting material and alkali-excited cement both at home and abroad, due to raw material active component and the difference of chemical constituent, gel time is uncontrollable, and at present retarder in terms of cement is entirely without effect in geo-polymer system, the retarder therefore finding a kind of applicable geology polymeric system is the key factor of geo-polymer popularization and application.
Researchers both domestic and external, from the deficiency of geo-polymer, have applied for some Patents.
Chinese invention patent (patent No.: CN200810035397.2 and CN200410015696.1) discloses a kind of geopolymer soil consolidation grouting material and soil consolidation grouting material, and the two patent is all to be mixed with flyash, slag, slag, high-calcium fly ass, alkali-activator and water to form.It is prepared for the geopolymer soil consolidation grouting material that early strength is high, have good water stability, mobility and durability.Except for the difference that CN200810035397.2 with the addition of a kind of water reducer, but the waterglass that the alkali-activator used by the method is not Instant, but general solid water glass, waterglass dissolution velocity in slurry is slow, it is difficult to prepare the grouting material meeting different engineering positions performance indications, according to the reaction mechanism of geo-polymer, in waterglass, the rate of dissolution in slurry of silicate ion and the silicate ion version being dissolved in slurry directly affect geo-polymer grouting material performance.Meanwhile, both preparation methoies are all without reference to retarder, and geo-polymer is uncontrollable for setting time, particularly contrast high calcium slag, and setting time is very fast, does not has suitable retarder to there will be sudden strain of a muscle solidifying.
Chinese patent, the open a kind of geopolymer grouting material of number of patent application: CN200910153713.0.Discarded concrete powder, desulfurated plaster, steel-making slag powder, slag powders, flyash, alkali-activator are mixed with and form by the method.Alkali-activator used by the method is liquid base exciting agent, it is difficult to the geo-polymer grouting material that processability is stable, is not suitable for large-scale production and application.
Chinese patent, application number: 200910153713.0, publication number: CN101712546A, this disclosure of the invention one geopolymer grouting material, it is prepared by each component of following weight portion: discarded concrete powder 10～30 weight portion, desulfurated plaster 5～15 weight portion, steel-making slag powder 10～20 weight portion, slag powders 20～40 weight portion, high-calcium fly ass 3～8 weight portion, flyash 20～50 weight portion, alkali-activator 5～10 weight portion.The geopolymer grouting material of this invention, although solving polymer grout-ing material intensity height, mobility partially, but it is low to there is intensity, setting time is non-adjustable, narrow application range, the problem of unstable properties.
Existing document report and Patents pertain only to the grouting material at certain concrete engineering position, there is also intensity low, and setting time is non-adjustable, narrow application range, the problem of unstable properties.
Summary of the invention
The invention solves the problems that prior art problem and provide a kind of intensity and gel time adjustable, stable performance, geo-polymer grouting material applied widely, and extensively apply significant in engineering for realizing this geo-polymer grouting material.
To achieve these goals, present invention employs techniques below scheme:
A kind of geo-polymer grouting material, is characterized in that: is mixed with according to the proportion of 0.26～0.38 by water and inorganic silicate composite and forms；The composition parts by weight of described inorganic silicate composite: slag 75～93 parts, flyash 66～70 parts, alkali-activator 16～28 parts and retarder 0.3～1.6 parts；Described retarder is two kinds of mixture powders of potassium dihydrogen phosphate, sodium dihydrogen phosphate and dalcium biphosphate.
It is mixed with according to the proportion of 0.30 by inorganic silicate composite and water above and forms；The composition parts by weight of described inorganic silicate composite: 91 parts of slag, 67 parts of flyash, alkali-activator 20 parts and retarder 0.5 part.
Above-described slag by hardening granulated blast-furnace slag through the powder body of grinding to 800 mesh；Flyash reaches 600 mesh, and quality reaches more than two grades；Alkali-activator be modulus be the instant type powdery waterglass of 1.6, fineness reaches 600 mesh；Retarder fineness reaches more than 400 mesh.
The preparation process of above-mentioned geo-polymer grouting material is:
(1) preparation of inorganic silicate composite: slag 75～93 parts, flyash 66～70 parts, alkali-activator 20～28 parts and retarder 0.3～1.6 parts are placed in blender, under room temperature, normal pressure, it is uniformly mixed, obtains a kind of inorganic silicate composite；
(2) preparation of geo-polymer grouting material: the inorganic silicate composite choosing water and step (1) is placed in blender with the weight ratio of 1:0.26～0.38, stirring mixing, it is thus achieved that geo-polymer grouting material.
Mixing time described in above step (1) is: 6～10 minutes；Mixing time described in step (2) is: 5～10 minutes.
Operation principle:
The present invention utilizes instant type powdery waterglass, slag, flyash and retarder to select flexibly according to the requirement of construction, and it is mixed with inorganic silicate composite granule, as long as at the construction field (site), adding and just can be prepared into geo-polymer grouting material as appropriate water carries out mixing.The method is similar with cement-based grouting material preparation method, scene has only to add water and uniformly mixes, simple to operate, slag and flyash just can fully react with instant type powdery waterglass within a short period of time simultaneously, slag and waterglass react the early strength that ensure that grouting material, flyash and waterglass react setting time and the later strength that can regulate grouting material in a big way, and improve the durability of grouting material.
Beneficial effects of the present invention:
1. the present invention uses two kinds of mixture powders of potassium dihydrogen phosphate, sodium dihydrogen phosphate and dalcium biphosphate as retarder, select the method that instant type powdery waterglass, slag, flyash, retarder and water carry out being mixed with geo-polymer grouting material the most flexibly, the gel time and the fluidity performance indications that make geo-polymer grouting material reach stable and adjustable effect, thus are greatly improved the use combination property of geo-polymer grouting material.
2. this geology polymer grout-ing material preparation method is similar with cement-based grouting material preparation method, and scene has only to add water, simple to operate；Slag and flyash just can fully react with instant type powdery waterglass within a short period of time simultaneously, slag and waterglass react the early strength that ensure that grouting material, flyash and waterglass react setting time and the later strength that can regulate grouting material in a big way, and improve the durability of grouting material.
3. to have the grouting material performance indications such as intensity, gel time, fluidity stable, adjustable for this geology polymer grout-ing material, asepsis environment-protecting, the advantage of low cost.It is widely used in the engineering positions such as road quick patching, Identification Beneath Concrete Slabs grouting, treatment of soft foundation, bridge strengthening crack repairing, deep layer grout curtain, foot bolt fastening.Relative to traditional cement-based grouting material, low cost is more superior in terms of the durability such as corrosion-resistant, Heat-resistant stable, resistance to erosion.In terms of existing technologies, there is the advantage that stable performance is adjustable, the scope of application is big, simple to operate in this geology polymer grout-ing material.
Detailed description of the invention
Described in further detail by the detailed description of the invention of the present invention below.
Embodiment 1:
A kind of geo-polymer grouting material, is prepared inorganic silicate composite by slag 91kg, alkali-activator 20kg, flyash 67 and retarder 0.5kg；It is mixed with 30kg water by 100kg inorganic silicate composite the most again and forms.
The preparation method of above-described geo-polymer grouting material, the preparation process of above-mentioned geo-polymer grouting material:
(1) preparation of inorganic silicate composite: by slag 91kg, alkali-activator 16kg, flyash 67 and retarder 0.5kg, be placed in blender, under room temperature, normal pressure, mix and blend 5 minutes, obtain a kind of inorganic silicate composite；Described slag by hardening granulated blast-furnace slag through the slag powder of grinding to 800 mesh; flyash is the flyash that 600 mesh qualities reach more than two grades; alkali-activator be modulus be 1.6 fineness 16kg instant type powdery waterglass at 600 mesh, retarder is 0.25kg sodium dihydrogen phosphate and the mixture powder of 0.25kg potassium dihydrogen phosphate of 400 mesh.
(2) preparation of geo-polymer grouting material: the ratio of the inorganic silicate composite and 30kg water of choosing 100kg step (1) is refitted in stirrer for mixing and stirs 5 minutes, it is thus achieved that geo-polymer grouting material.
Through measuring, the initial set 100min of this grouting material, final set 130min, fluidity 340mm, 1d comprcssive strength 10.7MPa, 3d comprcssive strength 16.1MPa, 28d comprcssive strength 46.9MPa, this grouting material is applicable to the application in distress in concrete Rapid-Repair field.
Embodiment 2:
A kind of geo-polymer grouting material, is prepared inorganic silicate composite by slag 75kg, flyash 70kg, alkali-activator 28kg and retarder 1kg；Formed with being mixed with of 38kg water by 100kg inorganic silicate composite the most again.
The preparation method of above-described geo-polymer grouting material, the preparation process of above-mentioned geo-polymer grouting material:
(1) preparation of inorganic silicate composite: by slag 71kg, flyash 70kg, alkali-activator 28kg and retarder 1kg, be placed in blender, under room temperature, normal pressure, mix and blend 10 minutes, obtain a kind of inorganic silicate composite；Described slag by hardening granulated blast-furnace slag through the slag powder of grinding to 800 mesh; flyash is the flyash that 600 mesh qualities reach more than two grades; alkali-activator be modulus be 1.6 fineness 28kg instant type powdery waterglass at 600 mesh, retarder is 0.5kg sodium dihydrogen phosphate and the mixture powder of 0.5kg potassium dihydrogen phosphate of 450 mesh.
(2) preparation of geo-polymer grouting material: the ratio of the inorganic silicate composite and 38kg water of choosing 100kg step (1) is refitted in stirrer for mixing and stirs 10 minutes, it is thus achieved that geo-polymer grouting material.
Through measuring, the initial set 300min of this grouting material, final set 330min, fluidity 330mm, 1d comprcssive strength 6.9MPa, 3d comprcssive strength 16.7MPa, 28d comprcssive strength 31.3MPa, this grouting material is applicable to the application of the aspects such as the deep layer grout curtain in cement concrete road basic reinforcement, treatment of soft foundation and soot.
Embodiment 3:
A kind of geo-polymer grouting material, is prepared inorganic silicate composite by slag 93kg, flyash 66kg, alkali-activator 18kg and retarder 1.6kg；It is mixed with 32kg water by 100kg inorganic silicate composite the most again and forms.
The preparation method of above-described geo-polymer grouting material, the preparation process of above-mentioned geo-polymer grouting material:
(1) preparation of inorganic silicate composite: by slag 93kg, flyash 66kg, alkali-activator 18kg and retarder 1.6kg, be placed in blender, under room temperature, normal pressure, mix and blend 8 minutes, obtain a kind of inorganic silicate composite；Described slag by hardening granulated blast-furnace slag through the slag powder of grinding to 800 mesh; flyash is the flyash that 600 mesh qualities reach more than two grades; alkali-activator be modulus be 1.6 fineness 18kg instant type powdery waterglass at 600 mesh, retarder is fineness at the 1kg sodium dihydrogen phosphate of 600 mesh and the mixture powder of 0.6kg dalcium biphosphate.
(2) preparation of geo-polymer grouting material: the ratio of the inorganic silicate composite and 32kg water of choosing 100kg step (1) is refitted in stirrer for mixing and stirs 8 minutes, it is thus achieved that geo-polymer grouting material.
Through measuring, the initial set 360min of this grouting material, final set 400min, fluidity 325mm, 1d comprcssive strength, 21.5MPa, 3d comprcssive strength 40.7MPa, 28d comprcssive strength 63.2MPa, this grouting material is applicable to the application of the aspects such as Identification Beneath Concrete Slabs grouting, equipment installation and engineering first-aid repair.
Embodiment 4:
A kind of geo-polymer grouting material, is prepared inorganic silicate composite by slag 85kg, flyash 68kg, alkali-activator 24kg and retarder 1.2kg；It is mixed with 34kg water by 100kg inorganic silicate composite the most again and forms.
The preparation method of above-described geo-polymer grouting material, the preparation process of above-mentioned geo-polymer grouting material:
(1) preparation of inorganic silicate composite: by slag 85kg, flyash 68kg, alkali-activator 24kg and retarder 1.2kg, be placed in blender, under room temperature, normal pressure, mix and blend 6 minutes, obtain a kind of inorganic silicate composite；Described slag by hardening granulated blast-furnace slag through the slag powder of grinding to 800 mesh; flyash is the flyash that 600 mesh qualities reach more than two grades; alkali-activator be modulus be 1.6 fineness 24kg instant type powdery waterglass at 600 mesh, retarder is the 0.6 kg potassium dihydrogen phosphate and 0.6 of 800 mesh
The mixture powder of kg dalcium biphosphate.
(2) preparation of geo-polymer grouting material: the ratio of the inorganic silicate composite and 34kg water of choosing 100kg step (1) is refitted in stirrer for mixing and stirs 6 minutes, it is thus achieved that geo-polymer grouting material.
Through measuring, the initial set 120min of this grouting material, final set 150min, fluidity 313mm, 1d comprcssive strength 13.7MPa, 3d comprcssive strength 28.7MPa, 28d comprcssive strength 46.1MPa, this grouting material is applicable to the application of the aspects such as the reinforcing of normal concrete base course, pre-stressed bridge crack repairing.
Embodiment described above, simply one of more preferably concrete mode of the present invention, the usual variations and alternatives that those skilled in the art are carried out in the range of technical solution of the present invention all should comprise within the scope of the present invention.
Claims (4)
1. a geo-polymer grouting material, is characterized in that: is mixed with according to the proportion of 0.26～0.38: 1 by water and inorganic silicate composite and forms；The component of described inorganic silicate composite and parts by weight are: slag 75～93 parts, flyash 66～70 parts, alkali-activator 16～28 parts and retarder 0.3～1.6 parts；
Described retarder is two kinds of mixture powders of potassium dihydrogen phosphate, sodium dihydrogen phosphate and dalcium biphosphate；
Described slag by hardening granulated blast-furnace slag through the powder body of grinding to 800 mesh；Flyash reaches 600 mesh, and quality reaches more than two grades；Alkali-activator be modulus be the instant type powdery waterglass of 1.6, fineness reaches 600 mesh；Retarder fineness reaches more than 400 mesh.
Geo-polymer grouting material the most according to claim 1, is characterized in that: is mixed with according to the proportion of 1: 0.30 by inorganic silicate composite and water and forms；The component of described inorganic silicate composite and parts by weight are: 91 parts of slag, alkali-activator 20 parts, 67 parts of flyash and retarder 0.5 part.
3. according to the preparation method of the geo-polymer grouting material described in claim 1-2 any one, it is characterized in that: the preparation process of above-mentioned geo-polymer grouting material is:
(1) preparation of inorganic silicate composite: slag 75～93 parts, flyash 66～70 parts, alkali-activator 16～28 parts and retarder 0.3～1.6 parts are placed in blender, under room temperature, normal pressure, it is uniformly mixed, obtains a kind of inorganic silicate composite；
(2) preparation of geo-polymer grouting material: the inorganic silicate composite choosing water and step (1) is placed in blender with the weight ratio of 1: 0.26～0.38, stirring mixing, it is thus achieved that geo-polymer grouting material.
The preparation method of geo-polymer grouting material the most according to claim 3, is characterized in that: described in step (1) stirring mixing time be: 6～10 minutes；Described in step (2) stirring mixing time be: 5～10 minutes.
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