CN104556918B - A kind of water resistant dispersion high bonding early strength micro expansion injecting paste material - Google Patents
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Abstract
The invention discloses a kind of water resistant dispersion high bonding early strength micro expansion injecting paste material, it is made up of the component of following parts by weight: quick hardening sulphoaluminate cement 100 parts, potassium dihydrogen phosphate 8～10 parts, magnesium oxide 25～40 parts, aggregate 100～150 parts, water reducer 0.5～2.0 parts, retarder 0～0.6 part, water resistant dispersant 0.01～0.05 part, polymer emulsion 5～15 parts, water 28～35 parts.Water resistant of the present invention dispersion high bonding early strength micro expansion injecting paste material has early strength micro expansion, high with the adhesion strength of reinforcing bar, old concrete, good fluidity, water resistant good dispersion, and setting time and early strength controlled, the features such as good endurance, can be widely applied to Underwater Engineering, early strength requires high salvaging, plant and bury the engineering field such as reinforcing bar and shield tunnel synchronous grouting.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of water resistant dispersion high bonding early strength micro expansion injecting paste material.
Background technology
Cement based grouting material is the injecting paste material that in domestic and international Grouting engineering, consumption is maximum and purposes is the widest, be mainly used in anchoring,
Steel structure column sole is carried out slip casting, remodeling concrete structure, reinforce the reserving hole channel of prestressed reinforced concrete construction slip casting,
The fields such as shield tunnel synchronous grouting, therefore need to meet the requirements such as good fluidity, fast hard, the strongest, adhesion strength height and microdilatancy.
Existing injecting paste material is of a great variety, but can meet claimed below not yet finding simultaneously: 1) setting time is adjustable, with full
Slip casting requirement under foot complex working condition；2) enough intensity is reached in early days, it is ensured that efficiently construction requirement；3) in application process
In occur without shrinkage cracking phenomenon, can have effective adhesive, it is ensured that the durability of structure and security and stability；4) in water environment
Slip casting, is susceptible to water-dispersible corrosion, it is to avoid cause the destruction of water mudrock structure to affect safety of structure and service life；5) with
Reinforcing bar, the adhesion strength height of old concrete, meet the high-adhesion energy requirement of special engineering.
Summary of the invention
It is an object of the present invention to provide a kind of water resistant dispersion high bonding early strength micro expansion injecting paste material, the preferable mobility of this injecting paste material,
Water resistant dispersion, caking property, early strength micro expansion, and setting time is adjustable, applied widely.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of water resistant disperses high bonding early strength micro expansion injecting paste material, and it is made up of the component of following parts by weight: fast hard sulfur aluminic acid
Salt cement 100 parts, potassium dihydrogen phosphate 8～10 parts, magnesium oxide 25～40 parts, aggregate 100～150 parts, water reducer 0.5～2.0
Part, retarder 0～0.6 part, water resistant dispersant 0.01～0.05 part, polymer emulsion 5～15 parts, water 28～35 parts.
According to such scheme, described quick hardening sulphoaluminate cement strength grade is 42.5R, its Blain specific surface be 350～
400m2/kg。
According to such scheme, described potassium dihydrogen phosphate is industrial products, and its purity is not less than 98% (quality).
According to such scheme, described magnesium oxide is dead burned magnesia industrial products (calcining heat is 1600～1700 DEG C), its
Blain specific surface is 280～350m2/ kg, purity is not less than 90% (quality).
According to such scheme, described quick hardening sulphoaluminate cement has early strength micro expansion, hardening at subcritical temerature, impervious, sulfuric-resisting salt contamination
The performance that erosion etc. are excellent；Potassium dihydrogen phosphate and magnesium oxide are swift in response and generate MgKPO4·6H2O, has the strongest, fast hard, high anti-
Salt freezes, high-adhesion and high-durability energy；And partial oxidation magnesium reacts generation magnesium hydroxide with water and produces microdilatancy, note can be improved
The dense packing effect of pulp material, early strength and adhesive property.Can be formed after described injecting paste material aquation substantial amounts of entringite,
Al(OH)3Gel and magnesium-phosphate hydrated gel, gained gel and entringite mutually overlap with hydrated calcium silicate and form fine and close water
Change product net, improve the consistency of gained injecting paste material, improve its early epistasis energy, adhesive property and endurance quality.
According to such scheme, described aggregate is natural sand, and its MB value < 1.4, clod content < 1.0% (quality).
According to such scheme, described water reducer is Slow release polycarboxylate-typehigh-performance high-performance water reducer, for the auspicious VIVID-500A in Shanghai three
Type or VIVID-500C type, water-reducing rate > 20%.Molecule on Slow release polycarboxylate-typehigh-performance high-performance water reducer side chain can be along with water
Mud hydration reaction is carried out, and hydrolysis, the little molecule of sustained release, it is provided that lasting dispersibility occurs, shows good guarantor
Collapse ability.
According to such scheme, described retarder is boric acid, and for industrial products, its purity is not less than 98% (quality).Boric acid adds
After entering among aluminium sulfate, it is wrapped in cement granules hydrated sheath surface owing to forming Calcium pyroborate, makes cement suspended substance tend towards stability,
And stop cement particle to condense, the condensation of cement can be delayed.For the reaction of potassium dihydrogen phosphate Yu magnesium oxide, boric acid dissolves raw
The B become4O7 2-Ion meeting rapid adsorption, to MgO particle surface, forms one layer with B4O7 2-And Mg2+It is main hydrated product layer,
Hinder dissolving and the NH of MgO4+And H2PO4 -Ion contacts with MgO granule, thus reaches slow setting purpose.
According to such scheme, described water resistant dispersant is hydroxyethyl cellulose or hydroxypropyl methyl cellulose, for Cellosize
QP type hydroxyethyl cellulose (HEC) or HT-K type hydroxypropyl methyl cellulose (HPMC), its molecular weight is not less than 200,000.
The water resistant dispersant used is a kind of water-soluble high-molecular compound with backbone and stronger absorbability, backbone
Cement granules, gather materials etc. can be attached together by macromolecular compound, improves the intergranular cohesion of mixture, and molecule
Can mutually tangle between chain, form stable network structure, thus the water resistant being greatly improved injecting paste material mixture washes ability,
Directly can pour in water, improve the intensity of injecting paste material under water, it is ensured that the quality of Underwater Engineering, it is achieved that underwater construction " land
Groundization ".
According to such scheme, described polymer emulsion is made up of the component of following portions by weight: E51 aqueous epoxy resins 100
Part, aromatic amine aqueous epoxy curing agent (solid content is 50～52%) 100～130 parts；Described aromatic amine aqueous ring
Oxygen firming agent is Hanzhong, Shanghai H203B type firming agent.The three-dimensional that injecting paste material of the present invention utilizes polymer emulsion to have is continuous
Cancellated nethike embrane, and utilize the Al (OH) formed in cement slurry hydration process3Gel, magnesium-phosphate hydrated gel and calcium
Alumen and hydrated calcium silicate mutually overlap and form fine and close hydrated product net, make both structures mutually intert, be cross-linked with each other formation
A kind of three-dimensional fine and close inierpeneirating network structure, is effectively improved the mechanical property of gained injecting paste material, adhesive property, and blocks stress
The micro-crack that effect produces.Meanwhile, polymer emulsion consist of macromole, adsorbable cement granules, increase hydration process
Diffusional resistance, reduces the hydration rate of cement, and alleviates the problem that heat release is concentrated.Sulphate aluminium cement aquation and magnesium oxide and phosphorus
Acid dihydride nak response heat release can promote the solidification of aqueous epoxy resins, and the epoxy resin after solidification can further improve injecting paste material
Adhesive property and anti-permeability performance.Potassium dihydrogen phosphate and magnesium oxide react and generate the MgKPO with high-adhesion4·6H2O, it is possible to decrease
The consumption of polymer emulsion, reduces cost, reduces and shrink, improve the adhesive property of injecting paste material simultaneously.
According to such scheme, by quick hardening sulphoaluminate cement, potassium dihydrogen phosphate, magnesium oxide, aggregate, retarder, water resistant dispersion
It is uniform that stirrer for mixing is put in agent, water reducer, polymer emulsion and water is pre-mixed simultaneously, is subsequently adding in blender and mixes
Close uniformly, obtain water resistant of the present invention dispersion high bonding early strength micro expansion injecting paste material.
Compared with prior art, the invention have the benefit that
1) injecting paste material of the present invention has adjustability flexibly, can adjust water reducer ease up according to the needs of work condition environment
Solidifying agent volume, accurately controls its setting time and early strength；Can the engineering time (fluidity > 270mm) can be at 10min～2h
In the range of be adjusted, facilitate site operation.
2) injecting paste material of the present invention has water resistant dispersive property, and land and water strength ratio is more than 0.80, meets wanting of slip casting under water
Ask.
3) injecting paste material of the present invention has micro-expansibility and high-adhesion energy, can with reinforcing bar, old concrete bonds well,
And contractility is little, it is ensured that the durability of resulting structures and security and stability after slip casting.
4) injecting paste material of the present invention is applied widely, and low cost, has good workability, can be used for anchor foundation bolt,
Steel structure column sole is carried out slip casting, under water slip casting, remodeling concrete structure, the preformed hole of reinforcing prestressed reinforced concrete construction
The fields such as the slip casting in road and shield tunnel synchronous grouting, excellent combination property, there is preferable economic benefit and social benefit.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below by embodiment, but the present invention not only office
It is limited to the following examples, should not be construed as limitation of the invention further.
Performance test methods in following example is as follows:
1) mensuration of mechanical property: carry out by GB177-85 " strength of cement mortar detection method " relevant regulations.
2) fluidity, setting time and adhesive property: by JGJ70-90 " building mortar basic performance tests method " relevant regulations
Carry out.
3) grip degree: carry out with reference to DL/T 5150-2001 " concrete for hydraulic structure testing regulations " relevant regulations.
4) volume stability and durability: reference GB/T 50448-2008 " cement-based grouting material application technology specification ",
JGJ70-90 " building mortar basic performance tests method " and GB/T 50082-2009 " normal concrete long-term behaviour and durability
Can test method standard " relevant regulations carries out.
5) test of water resistant dispersive property: prepare the height container more than 550mm, be filled at 500mm, simultaneously
In container, one length of side of placement is the cube serosity die trial of 70.7mm, carefully injects full water newly mixing serosity by conduit
Mould in, until serosity is filled die trial and overflows, take out die trial from container, vibrate, beat molding, by molding in water
Die trial is placed in mark and supports maintenance in room (humidity is more than 60%) until specifying age, reference JGJ70-90 " building serosity key property
Test method " in test specimen comprcssive strength method measure its comprcssive strength, measure same pot slurry of corresponding age by same procedure simultaneously
The intensity of commonsense method molding.It is land and water strength ratio, energy divided by the intensity of common shaping test piece by the intensity of shaping test piece in water
The water resistant dispersive property of quantitative analysis serosity.
Embodiment 1
A kind of water resistant dispersion high bonding early strength micro expansion injecting paste material, is made up of the component of following parts by weight: quick hardening sulphoaluminate
Cement 100 parts, potassium dihydrogen phosphate 8 parts, magnesium oxide 25 parts, 100 parts of aggregate, water reducer 2.0 parts, retarder 0 part, anti-
Water dispersant 0.01 part, polymer emulsion 5 parts, 28 parts of water.
Quick hardening sulphoaluminate cement strength grade is 42.5R, and its Blain specific surface is 350m2/kg；Potassium dihydrogen phosphate is industry
Product, its purity is 98% (quality)；Magnesium oxide is dead burned magnesia (calcining heat is 1600 DEG C), and Blain specific surface is
280m2/ kg, its purity is 90% (quality)；Aggregate is natural sand, and its MB value is 0.8, clod content 0.2% (quality)；
Water reducer is VIVID-500C Slow release polycarboxylate-typehigh-performance high-performance water reducer (Shanghai three auspicious VIVID-500C type), and water-reducing rate is
22%；Retarder is boric acid, and boric acid is industrial products, and its purity is 98% (quality)；Water resistant dispersant is Cellosize QP
Type hydroxyethyl cellulose (HEC), its molecular weight 200,000；Polymer emulsion is made up of the component of following parts by weight: E51 water
Property epoxy resin 100 parts, H203B type aromatic amine aqueous epoxy curing agent (solid content is 52%) 100 parts.
According to the above ratio quick hardening sulphoaluminate cement, potassium dihydrogen phosphate, magnesium oxide, aggregate, water resistant dispersant are put into blender
Middle mix homogeneously, is pre-mixed water reducer, polymer emulsion and water simultaneously, is subsequently adding mix in blender uniform, obtains
Water resistant of the present invention dispersion high bonding early strength micro expansion injecting paste material.Proportioning raw materials is as shown in table 2, and the performance test results is shown in
Table 1.
Embodiment 2
A kind of water resistant dispersion high bonding early strength micro expansion injecting paste material, is made up of the component of following portions by weight: quick hardening sulphoaluminate
Cement 100 parts, potassium dihydrogen phosphate 8 parts, magnesium oxide 30 parts, 120 parts of aggregate, water reducer 1.0 parts, retarder 0.2 part,
Water resistant dispersant 0.02 part, polymer emulsion 10 parts, 30 parts of water.
Described quick hardening sulphoaluminate cement strength grade is 42.5R, and Blain specific surface is 380m2/kg；Potassium dihydrogen phosphate is work
Industry product, its purity is 98% (quality)；Magnesium oxide is dead burned magnesia (calcining heat is 1600 DEG C) industrial products, suddenly
Family name's specific surface area is 300m2/ kg, its purity is 92% (quality)；Aggregate is natural sand, and its MB value is 0.6, clod content
It is 0.3% (quality)；Water reducer is VIVID-500C Slow release polycarboxylate-typehigh-performance high-performance water reducer, and water-reducing rate is 22%；Slow
Solidifying agent is boric acid, and boric acid is industrial products, and its purity is 98% (quality)；Water resistant dispersant is Cellosize QP type ethoxy
Cellulose (HEC), its molecular weight 350,000；Polymer emulsion is made up of the component of following portions by weight: E51 water-base epoxy tree
100 parts of fat, H203B type aromatic amine aqueous epoxy curing agent (solid content is 52%) 110 parts.
According to the above ratio quick hardening sulphoaluminate cement, potassium dihydrogen phosphate, magnesium oxide, aggregate, retarder, water resistant dispersant are put
Enter stirrer for mixing uniform, water reducer, polymer emulsion and water are pre-mixed simultaneously, are subsequently adding mix in blender equal
Even, obtain water resistant of the present invention dispersion high bonding early strength micro expansion injecting paste material.Proportioning raw materials is as shown in table 2, and performance is surveyed
Test result is shown in Table 1.
Embodiment 3
A kind of water resistant dispersion high bonding early strength micro expansion injecting paste material, is made up of the component of following portions by weight:
Quick hardening sulphoaluminate cement 100 parts, potassium dihydrogen phosphate 9 parts, magnesium oxide 25 parts, 120 parts of aggregate, water reducer 0.5 part,
Retarder 0.4 part, water resistant dispersant 0.03 part, polymer emulsion 10 parts, 33 parts of water.
Quick hardening sulphoaluminate cement strength grade is 42.5R, and Blain specific surface is 400m2/kg；Potassium dihydrogen phosphate is that industry is produced
Product, its purity is 99% (quality)；Magnesium oxide is dead burned magnesia (calcining heat is 1700 DEG C), and Blain specific surface is
330m2/ kg, its purity is 90% (quality)；Aggregate is to meet the natural sand required, its MB value 1.0, clod content 0.3%；
Water reducer is VIVID-500A Slow release polycarboxylate-typehigh-performance high-performance water reducer, water-reducing rate 25%；Retarder is boric acid, and boric acid is
Industrial products, its purity is 99% (quality)；Water resistant dispersant is Cellosize QP type hydroxyethyl cellulose (HEC), its
Molecular weight 350,000；Polymer emulsion is made up of the component of following portions by weight: E51 aqueous epoxy resins 100 parts, H203B type
Aromatic amine aqueous epoxy curing agent (solid content is 52%) 120 parts.
According to the above ratio quick hardening sulphoaluminate cement, potassium dihydrogen phosphate, magnesium oxide, aggregate, retarder, water resistant dispersant are put
Enter stirrer for mixing uniform, water reducer, polymer emulsion and water are pre-mixed simultaneously, are subsequently adding mix in blender equal
Even, obtain water resistant of the present invention dispersion high bonding early strength micro expansion injecting paste material.Proportioning raw materials is as shown in table 2, and performance is surveyed
Test result is shown in Table 1.
Embodiment 4
A kind of water resistant dispersion high bonding early strength micro expansion injecting paste material, is made up of the component of following portions by weight: quick hardening sulphoaluminate
Cement 100 parts, potassium dihydrogen phosphate 10 parts, magnesium oxide 35 parts, 130 parts of aggregate, water reducer 1.0 parts, retarder 0.5 part,
Water resistant dispersant 0.03 part, polymer emulsion 15 parts, 35 parts of water.
Quick hardening sulphoaluminate cement strength grade is 42.5R, and Blain specific surface is 380m2/kg；Potassium dihydrogen phosphate is that industry is produced
Product, its purity is 98% (quality)；Magnesium oxide is dead burned magnesia (calcining heat is 1700 DEG C), and Blain specific surface is
350m2/ kg, its purity is 92% (quality)；Aggregate is to meet the natural sand required, its MB value 0.5, clod content 0.3%
(quality)；Water reducer is VIVID-500A Slow release polycarboxylate-typehigh-performance high-performance water reducer, water-reducing rate 25%；Retarder is boric acid,
Boric acid is industrial products, and its purity is 99% (quality)；Water resistant dispersant is HT-K type hydroxypropyl methyl cellulose (HPMC),
Its molecular weight 350,000；Polymer emulsion is made up of the component of following portions by weight: E51 aqueous epoxy resins 100 parts, H203B
Type aromatic amine aqueous epoxy curing agent (solid content is 50%) 130 parts.
According to the above ratio quick hardening sulphoaluminate cement, potassium dihydrogen phosphate, magnesium oxide, aggregate, retarder, water resistant dispersant are put
Enter stirrer for mixing uniform, water reducer, polymer emulsion and water are pre-mixed simultaneously, are subsequently adding mix in blender equal
Even, obtain water resistant of the present invention dispersion high bonding early strength micro expansion injecting paste material.Proportioning raw materials is as shown in table 2, and performance is surveyed
Test result is shown in Table 1.
Embodiment 5
A kind of water resistant dispersion high bonding early strength micro expansion injecting paste material, is made up of the component of following portions by weight:
Quick hardening sulphoaluminate cement 100 parts, potassium dihydrogen phosphate 10 parts, magnesium oxide 40 parts, 150 parts of aggregate, water reducer 2.0
Part, retarder 0.6 part, water resistant dispersant 0.05 part, polymer emulsion 15 parts, 35 parts of water.
Quick hardening sulphoaluminate cement strength grade is 42.5R, and Blain specific surface is 380m2/kg；Potassium dihydrogen phosphate is that industry is produced
Product, its purity is 98% (quality)；Magnesium oxide is dead burned magnesia (calcining heat is 1700 DEG C), and Blain specific surface is
300m2/ kg, its purity is 95% (quality)；Aggregate is to meet the natural sand required, its MB value 1.2, clod content 0.8%
(quality)；Water reducer is VIVID-500A Slow release polycarboxylate-typehigh-performance high-performance water reducer, water-reducing rate 25%；Retarder is boric acid,
Boric acid is industrial products, and its purity is 99% (quality)；Water resistant dispersant is HT-K type hydroxypropyl methyl cellulose (HPMC),
Its molecular weight 350,000；Polymer emulsion is made up of the component of following portions by weight: E51 aqueous epoxy resins 100 parts, H203B
Type aromatic amine aqueous epoxy curing agent (solid content is 50%) 130 parts.
According to the above ratio quick hardening sulphoaluminate cement, potassium dihydrogen phosphate, magnesium oxide, aggregate, retarder, water resistant dispersant are put
Enter stirrer for mixing uniform, water reducer, polymer emulsion, water are pre-mixed simultaneously, are subsequently adding mix in blender equal
Even, obtain the water resistant dispersion high bonding early strength micro expansion injecting paste material of the present invention.
Described in embodiment 1～5, the proportioning raw materials of water resistant dispersion high bonding early strength micro expansion injecting paste material is as shown in table 2, performance test
The results are shown in Table 1.
The performance test results of table 1 embodiment 1～5 gained injecting paste material
The proportioning raw materials (parts by weight) of table 2 embodiment 1～5 gained injecting paste material
Table 1 illustrates: water resistant dispersion high bonding early strength micro expansion injecting paste material prepared by the present invention, good fluidity, can pass through diminishing
Agent and retarder regulate and control setting time and the early strength of described injecting paste material；Potassium dihydrogen phosphate, magnesium oxide and polymer emulsion
Its adhesion strength and microdilatancy performance can be effectively improved；Injecting paste material service behaviour, mechanical property and the endurance quality prepared is good,
Integrated performance index is excellent, can meet different construction working condition requirement, be suitable for popularization and application.
Bound value and interval value that the present invention is raw materials used can realize the present invention, then this illustrative example that just differs.And
Above-described embodiment is only by clearly demonstrating made example, the not restriction to embodiment.Common for art
For technical staff, can also make other changes in different forms on the basis of the above description, and these change or
Within variation is still in the protection domain of the invention.
Claims (7)
1. a water resistant dispersion high bonding early strength micro expansion injecting paste material, it is made up of the component of following parts by weight: quick hardening sulphoaluminate cement 100 parts, potassium dihydrogen phosphate 8～10 parts, magnesium oxide 25～40 parts, aggregate 100～150 parts, water reducer 0.5～2.0 parts, retarder 0～0.6 part, water resistant dispersant 0.01～0.05 part, polymer emulsion 5～15 parts, water 28～35 parts；
Described retarder is boric acid, and its purity is not less than 98wt%；
Described polymer emulsion is made up of the component of following portions by weight: E51 aqueous epoxy resins 100 parts, aromatic amine aqueous epoxy curing agent 100～130 parts.
Water resistant the most according to claim 1 dispersion high bonding early strength micro expansion injecting paste material, it is characterised in that described quick hardening sulphoaluminate cement strength grade is 42.5R, and Blain specific surface is 350～400m2/kg。
Water resistant the most according to claim 1 dispersion high bonding early strength micro expansion injecting paste material, it is characterised in that described potassium dihydrogen phosphate is industrial products, and its purity is not less than 98wt%.
Water resistant the most according to claim 1 dispersion high bonding early strength micro expansion injecting paste material, it is characterised in that described magnesium oxide is dead burned magnesia industrial products, and its Blain specific surface is 280～350m2/ kg, purity is not less than 90wt%.
Water resistant the most according to claim 1 dispersion high bonding early strength micro expansion injecting paste material, it is characterised in that described aggregate is natural sand, its MB value < 1.4, clod content < 1.0wt%.
Water resistant the most according to claim 1 dispersion high bonding early strength micro expansion injecting paste material, it is characterised in that described water reducer is Slow release polycarboxylate-typehigh-performance high-performance water reducer, its water-reducing rate > 20%.
Water resistant the most according to claim 1 dispersion high bonding early strength micro expansion injecting paste material, it is characterised in that described water resistant dispersant is hydroxyethyl cellulose or hydroxypropyl methyl cellulose, and its molecular weight is not less than 200,000.
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| 《水泥基水性环氧树脂灌浆材料性能的研究》;王冬梅等;《新型建筑材料》;20111031(第10期);第86页左栏第6-7段及第87页左栏第3段-第88页右栏第1段 * |
| 《超早强微膨胀水下灌浆料的研究》;丁庆军等;《武汉理工大学学报（交通科学与工程版）》;20140630;第38卷(第3期);第498页右栏第1段-第3段、第500页左栏第3段-右栏第1段及第501页左栏第3段 * |
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|---|---|
| CN104556918A (en) | 2015-04-29 |
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