CN106279625A - A kind of patching material for concrete structures crack and method for repairing and mending - Google Patents
A kind of patching material for concrete structures crack and method for repairing and mending Download PDFInfo
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- CN106279625A CN106279625A CN201610662004.5A CN201610662004A CN106279625A CN 106279625 A CN106279625 A CN 106279625A CN 201610662004 A CN201610662004 A CN 201610662004A CN 106279625 A CN106279625 A CN 106279625A
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Abstract
A kind of patching material for concrete structures crack includes the first component and second component that volume ratio is 1:0.6～1.5, based on the percentage by weight accounting for the first component, first component includes Oleum Ricini 10% 30%, polypropylene glycol 40% 60%, triethanolamine 10% 30%, Polyethylene Glycol 0% 10%, polyglycerol 0% 10% and dibutyl tin laurate 0% 0.5%, based on the percentage by weight accounting for second component, second component includes methyl diphenylene diisocyanate 85% 95%, polymethylene polyphenylene isocyanate 0% 15% and toluene di-isocyanate(TDI) 0% 10%.Method for repairing and mending uses the patching material ratio of the present invention to mix, and adds water and quickly stir 10 seconds 20 seconds and be then injected into concrete structures crack to be repaired, treats potting compound curing molding, i.e. completes patch work.
Description
Technical field
The present invention relates to concrete structures guard technology field, in particular to one for concrete structures
The patching material in crack and method for repairing and mending.
Background technology
China Higher level bituminous paving is based on semi-rigid type base, due to by road-making material, weather conditions, traffic load
Acting on execution conditions etc., China Higher level highway well damage, the bituminous paving built in early days enters maintenance the most in advance
Phase.In numerous diseases, pavement crack is inevitable, is the most common disease being also to be most difficult to elimination.Pavement crack itself can not
Be afraid of, but crack produce way of escape table water and objectionable impurities etc. and can immerse basic unit or roadbed along crack, cause base mud, plat-bottom escape with
And the disease such as pit, affect the service life on road-ability and road surface.American Highway strategic research plan (is called for short SHRP meter
Draw) propose, if can in time asphalt pavement crack be repaired, can prolonging service life of pavement 10～20 years, reduce and keep in repair
Maintenance costs more than 50%.
In terms of crack repairing, current China is still mainly repaired by the cementation of fissures and surface filling technology, traditional
Crack patching material many employings plain asphalt, solvent-borne type modified pitch, emulsified asphalt, fiber asphalt, rubber asphalt fluid sealant, have
Machine silicon, base joint grouting glue, sand grains formula or particulate formula hot-mix asphalt mixture etc., but they are not enough with the adhesion strength of old pavement material,
Elastic poor with toughness, compatible deformation is not consistent, easily again ftractures after the cementation of fissures or joint filling, and crash rate is high, and endurance quality obtains
Less than guarantee；And above-mentioned material can only be maintained on fracture surface, therefore, traditional cementation of fissures or filling technology are not
Can fundamentally solve the crack problem of bituminous paving.Except the cementation of fissures and filling technology, the process of fracture also excavation type is repaiied
Benefit technology, cement injection technology etc..
But all there is certain drawback in current above-mentioned Techniques for Remedy of Cracks, such as: excavation type repairing technique, its construction period
Long, cost is high, big to Coherent traffic noise, also can produce substantial amounts of waste material；The bad secondary that can be formed of cement mud-jack technical finesse takes off
Sky, curing cycle is long, is easily generated brittle break after grout cures, and endurance quality is poor.
In recent years, domestic occur in that with polymer grouting and the cleft weld high polymer grouting as representative and road surface deep layer sick
Evil treatment technology, reports according to pertinent literature, this technology achieves preferable treatment effect in some engineerings.But this technology is still
It is in the explorative research stage, at high polymer material R&D costs, the high polymer material scope of application, high polymer material and adjacent material
The aspect such as compatibility of deformation all there is many problems to be resolved.
Cement concrete pavement is as another kind of common road surface form, and its method for repairing and mending used after disruption is will be broken
The concrete damaged is removed, and spreads identical with original design label or higher than original design label portland cement concrete.This repairing
The shortcoming of method maximum is that the strength development of cement concrete is slow, hardening time is long, causes the cycle again come into operation long.
Additionally, carry out thin layer reparation with portland cement concrete to there is also the problem of the compatibility, such as, the cement concrete of new cast is received
Contracting is bigger than old concrete, is easily caused shrinkage cracking, and owing to the viscosity of cement concrete own is low, causes mixing with old
Solidifying soil associativity is poor, and then again forms crack.Similar with cement concrete pavement also has cement concrete metope etc., and it is also
There is secondary and repair problem easy to crack.
Therefore, for concrete structures such as above-mentioned bituminous paving, cement concrete pavement and cement concrete metopes
Reparation need further exploratory development, especially in the area that environmental condition is bigger on concrete structures impact, as
The research of high temperature, the cold or high polymer grouting repair materials of moist area of heavy rainfull and corresponding restorative procedure has important grinding
Study carefully meaning and engineer applied is worth.
Summary of the invention
It is an object of the invention to provide a kind of patching material for concrete structures crack, its curing rate is fast,
Cementitiousness is strong, possesses preferable temperature stability and wider temperature applicable range, has good freeze proof, anti-water damage effect
Really, and nontoxic, safety and environmental protection.
Another object of the present invention is to provide the method for repairing and mending in a kind of concrete structures crack, it can quickly be repaired
Concrete structures crack, method is simply, easily operate, it is possible to effectively extends service life of structure, is greatly saved engineering cost.
Embodiments of the invention are achieved in that
A kind of patching material for concrete structures crack, it includes the first component and second component, the first component
It is 1:0.6～1.5 with the volume ratio of second component, wherein,
Based on the percentage by weight accounting for the first component, the first component includes Oleum Ricini 10%-30%, polypropylene glycol 40%-
60%, triethanolamine 10%-30%, Polyethylene Glycol 0%-10%, polyglycerol 0%-10% and dibutyl tin laurate
0%-0.5%,
Based on the percentage by weight accounting for second component, second component include methyl diphenylene diisocyanate 85%-95%,
Polymethylene polyphenylene isocyanate 0%-15% and toluene di-isocyanate(TDI) 0%-10%.
The method for repairing and mending in a kind of concrete structures crack, it uses above-mentioned patching material to repair, method for repairing and mending bag
Include following steps:
Preparation patching material, mixes the first component and second component according to the ratio that volume ratio is 1:0.6-1.5,
And add water and quickly stir 10 seconds-20 seconds, it is thus achieved that potting compound；And
Potting compound is injected in concrete structures crack to be repaired, treats potting compound curing molding, i.e. complete to repair
Work.
The embodiment of the present invention provides the benefit that:
The patching material for concrete structures crack of the present invention for it compares existing patching material, has more
Good temperature stability, broader temperature applicable range, and anti-water damage is effective, therefore, it is possible to be applicable to various weather and
The Rapid-Repair in the concrete structures crack under environmental condition, rainy area relatively big, moist to circumstance of temperature difference is also suitable.Make
When concrete structures being repaired with the patching material of the present invention, directly slurry is injected in crack, repair procedure
Simply.Constitute the reacted foaming of the various material compositions of patching material of the present invention formed soft elasticity, self tool sticking
Polyurethanes plastics, it is possible to form the repair layer fitted completely with crack, do not limited by fissured structure, and need not use volume
Outer binding agent, repairing efficiency is high, repair efficiency is good.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but those skilled in the art will
Understanding, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.In embodiment unreceipted specifically
Condition person, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same or instrument unreceipted production firm person, be
Can be by the commercially available conventional products bought and obtain.
The patching material for concrete structures crack of the present invention mainly includes the first component and second component.First
The volume ratio of component and second component is 1:0.6～1.5.It is preferred that the volume ratio of the first component and second component be 1:0.8～
1.2.More preferably, the volume ratio of the first component and second component is 1:1.Obtain by the first component and second component are carried out mixing
Obtain the patching material of the present invention.
Wherein, the first component is polyhydric alcohol.Based on the percentage by weight accounting for the first component, the first component includes Oleum Ricini
10%-30%, polypropylene glycol 40%-60%, triethanolamine 10%-30%, Polyethylene Glycol 0%-10%, polyglycerol 0%-
10% and dibutyl tin laurate 0%-0.5%.Wherein, Polyethylene Glycol, polyglycerol and dibutyl tin laurate
Belong to selectivity composition, can include also may not include Polyethylene Glycol, polyglycerol or di lauric dibutyl in the first component
Stannum.It is preferred that based on the percentage by weight accounting for the first component, the first component includes the Oleum Ricini of 15%-25%, 45%-55%
Polypropylene glycol, the triethanolamine of 15%-25%, the Polyethylene Glycol of 2%-8%, the polyglycerol of 2%-8% and 0.1%-
The dibutyl tin laurate of 0.3%.In actual mechanical process, can fit according to the structure in crack and concrete environment of repairing
Answer Sexual behavior mode.Polyethylene Glycol or polyglycerol is added, it is possible to be effectively improved patching material according to proportioning provided by the present invention
Softness, tensile property and caking property, improve the matching between patching material and crack and bonding stability further, with
Time can also improve patching material strain property under different force and ambient temperature, extend the service life of structures, anti-
Only patching material exoneration.Dibutyl tin laurate can be added as a kind of auxiliary agent or catalyst, to accelerate reaction rate,
Shorten hardening time.
First component of the present invention is water white transparency material, and its viscosity is 280mPa s-340mPa s, and density is
0.95kg·m-3-1.05kg·m-3。
Wherein, based on the percentage by weight accounting for second component, second component includes methyl diphenylene diisocyanate (MDI)
85%-95%, polymethylene polyphenylene isocyanate 0%-15% and toluene di-isocyanate(TDI) 0%-10%.Wherein, MDI
The derivant of methyl diphenylene diisocyanate can be become with partial replacement.Polymethylene polyphenylene isocyanate and toluene two are different
Cyanate is the composition selectively added.It is preferred that based on the percentage by weight accounting for second component, second component includes 90%-
The methyl diphenylene diisocyanate of 94%, the polymethylene polyphenylene isocyanate of 5%-8% and the toluene of 1%-5%
Diisocyanate.
The second component of the present invention is amber transparent material, and its viscosity is 230mPa s-270mPa s, and density is
1.23kg·m-3-1.25kg·m-3。
In preferred embodiment of the present invention, the patching material of the present invention also includes the 3rd component.3rd component is catalysis
Agent, the consumption of the 3rd component is 0.01%～1% of the volume relative to the first component.3rd component of the present invention is also to select
Property add, select accordingly according to the condition such as construction environment and climate temperature.Such as, can not adopt under higher temperature environment
With catalyst, and catalyst need to be used, to accelerate reaction rate and solidified forming time during relatively low temperature.As catalyst
3rd component is mainly aminated compounds, e.g. triethylene diamine, double-(2-methylaminoethyl) ether or N, N-dimethyleyelohexane
Amine.It is preferred that the 3rd component is selected from triethylene diamine, double-(2-methylaminoethyl) ether and N, N-dimethyl cyclohexyl amine
Plant or multiple.Those skilled in the art can regulate by selecting the consumption of different types of catalyst and corresponding catalyst
Catalytic effect.
3rd component of the present invention is water white transparency material, and its viscosity is 470mPa s-550mPa s, and density is
0.95kg·m-3-1.05kg·m-3。
In preferred embodiment of the present invention, the patching material of the present invention also includes additive.This additive e.g. water,
And the 0.1%-3% that its dosage is the volume relative to the first component.
The method for repairing and mending in the concrete structures crack of the present invention is that the patching material using the present invention carries out repairing, its
Specifically include following steps:
Step 1: the cleaning in crack processes
It is cleaned concrete structures crack to be repaired processing, removes the dust of fracture faces, dirt and water
Stain.
Step 2: preparation patching material, enters the first component and second component according to the ratio that volume ratio is 1:0.6-1.5
Row mixing, and add water and quickly stir 10 seconds-20 seconds, it is thus achieved that potting compound.Particularly as follows:
Measure the first component and second component that volume ratio is 1:0.6-1.5, and the volume ratio relative to the first component
The water of 0.1%-3%, is sequentially added into water and second component to the first component under stirring at normal temperature, more quickly stirring 10 seconds-
20 seconds, form the polyurethane filling material for mending a split.The room temperature of indication of the present invention refers to, temperature is the environment of 0 DEG C-60 DEG C
Temperature, when crack to be repaired is positioned at indoor, room temperature i.e. refers to indoor temperature, when crack to be repaired is positioned at outdoor, room temperature
I.e. refer to outdoor temperature.
Need in this step reaction raw materials, the i.e. first component, second component and water, quickly stir, so that the
One component, second component and water uniformly mix, are fully contacted, and react, fast foaming, and then obtain stable performance, uniformly
Crack patching material.
It is preferred that the 3rd component can also be added in this step in the first component, it is used for further speeding up reaction speed
Rate, improves repairing efficiency.Wherein, the dosage of the 3rd component is the volume ratio 0.01%～1% relative to the first component.Further,
The 3rd component as catalyst is in triethylene diamine, double-(2-methylaminoethyl) ether and N, N-dimethyl cyclohexyl amine
Plant or multiple.
Step 3: crack repairing
By the patching material of the polyurethane filling material in step 2, the i.e. present invention, pour into rapidly the crack after cleaning processes
In or be injected in the crack of deep layer with slip casting machine, treat that it solidify to form, i.e. complete patch work.
The patching material for concrete structures crack of the present invention starts to foam swollen for 15 seconds after embedding in-35 seconds
Swollen, in expansion process, the urethanes (also referred to as polyurethane plastics or polyurethane material) that reaction is formed fills up
Gap, whole crack, and rely on intrinsic viscosity to be closely linked with concrete layer, the most progressively curing molding.By the present invention
The patching material for concrete structures crack inject in crack after, through 3min-5min, polyurethane filling material is the most not
Flowing, starts curing molding, and is fully cured after 3h-8h.Proportioning raw materials according to the present invention and the dosage of catalyst
Can by the flowing time of patching material (keeping the time of fluidised form) and curing time control one reasonably in the range of, both
Construction requirement can be met, it is to avoid reaction is too fast, hardening time is the shortest and causes patching material not also being fully filled with gap
In the case of the situation of Local Priority solidification is occurred can having again simultaneously and carry out foaming faster relative to prior art
Journey, and completion of cure within a short period of time so that structures can recover to use as early as possible.
Utilizing the method for repairing and mending of the patching material of the present invention, either the preparation stage at patching material still repaiies in crack
The benefit stage is all to carry out under the ambient temperature carrying out patch work, it is not necessary to the dispensing stage or repair first group of the stage
Point, obtain potting compound after second component or mixing and heat, reaction condition is gentle, low for equipment requirements, reduces equipment
Input cost.
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1
In the present embodiment, the patching material for concrete structures crack of the present invention includes the first component and second
Component.The volume ratio of the first component and second component is 1:0.6.Wherein, based on the percentage by weight accounting for the first component, first group
Dividing and include the Oleum Ricini of 10%, the polypropylene glycol of 60% and the triethanolamine of 30%, its viscosity is 280mPa s, and density is
0.95kg·m-3.Based on the percentage by weight accounting for second component, second component includes the methyl diphenylene diisocyanate of 85%
And the polymethylene polyphenylene isocyanate of 15%, its viscosity is 230mPa s, and density is 1.23kg m-3。
By above-mentioned first component and second component and relative to the first component volume 0.1% water carry out mixing also
Quickly stirring 10 seconds, form the polyurethane filling material for mending a split.Polyurethane filling material is poured onto rapidly cleaning process
After crack in, after 25 seconds start foaming and intumescing, after 5min, polyurethane filling material does not flows, and the most solid after 8h
Chemical conversion type, repairing completes.
Embodiment 2
In the present embodiment, the patching material for concrete structures crack of the present invention includes the first component and second
Component.The volume ratio of the first component and second component is 1:1.2.Wherein, the first component includes the Oleum Ricini of 20%, 50% poly-
Propylene glycol, the triethanolamine of 20% and the Polyethylene Glycol of 10%, its viscosity is 300mPa s, and density is 0.98kg m-3.Press
Accounting for the percentage by weight meter of second component, second component includes methyl diphenylene diisocyanate and the methylene more than 10% of 90%
Quito phenylene isocyanate, its viscosity is 250mPa s, and density is 1.23kg m-3。
Above-mentioned first component and second component and the water relative to the 1% of the volume of the first component are carried out mixing fast
Speed stirring 15 seconds, forms the polyurethane filling material for mending a split.Polyurethane filling material slip casting machine is injected at cleaning
In crack after reason, starting foaming and intumescing after 30 seconds, after 4min, polyurethane filling material does not flows, and after 6h completely
Curing molding, repairing completes.
Embodiment 3
In the present embodiment, the patching material for concrete structures crack of the present invention includes the first component and second
Component.The volume ratio of the first component and second component is 1:1.Wherein, the first component includes the Oleum Ricini of 30%, poly-the third of 40%
Glycol, the triethanolamine of 25% and the polyglycerol of 5%, its viscosity is 320mPa s, and density is 1.02kg m-3.By accounting for
The percentage by weight meter of second component, second component include 94% methyl diphenylene diisocyanate, 5% polymethylene how sub-
Phenyl isocyanate and 1% toluene di-isocyanate(TDI), its viscosity is 260mPa s, and density is 1.24kg m-3。
Above-mentioned first component and second component and the water relative to the 2% of the volume of the first component are carried out mixing fast
Speed stirring 20 seconds, forms the polyurethane filling material for mending a split.Polyurethane filling material slip casting machine is injected at cleaning
In crack after reason, starting foaming and intumescing after 30 seconds, after 4min, polyurethane filling material does not flows, and after 6h completely
Curing molding, repairing completes.
Embodiment 4
In the present embodiment, the patching material for concrete structures crack of the present invention include the first component, second
Component and the 3rd component.The volume ratio of the first component and second component is 1:1.5, and the dosage of the 3rd component is relative to first
The 0.8% of the volume of component.Wherein, the first component include 15% Oleum Ricini, the polypropylene glycol of 45%, three ethanol of 19.5%
Amine, the Polyethylene Glycol of 10%, the polyglycerol of 10% and the di lauric dibutyl of 0.5%, its viscosity is 340mPa s,
Density is 1.04kg m-3.Based on the percentage by weight accounting for second component, second component includes 92% diphenyl methane two isocyanide
Acid esters, 6% polymethylene polyphenylene isocyanate and 2% toluene di-isocyanate(TDI), its viscosity is 270mPa s, density
For 1.25kg m-3.In the present embodiment, the 3rd component is triethylene diamine and the mixture of double-(2-methylaminoethyl) ether,
Its viscosity is 500mPa s, and density is 1.02kg m-3。
By above-mentioned first component, second component, the 3rd component and relative to the first component volume 2% water carry out
Mixing quickly stirring 20 seconds, form the polyurethane filling material for mending a split.Polyurethane filling material slip casting machine is injected
Entering in the crack after cleaning processes, start foaming and intumescing after 20 seconds, after 3min, polyurethane filling material does not flows, and
Being fully cured molding after 3h, repairing completes.Owing to the present embodiment with the addition of catalyst the 3rd component, therefore its hardening time is the shortest
In previous embodiment.
In order to verify the repair efficiency of the patching material for concrete structures crack of the present invention, the present invention further
The patching material preparing the proportioning raw materials using embodiment 1-embodiment 4 carries out performance test, and is made by SBS modified pitch
Compare for contrast material.
Test one: pull-out test
The cementitiousness of crack patching material is investigated by pull-out test.Cut into cube with the rut plate of AC-13 grating
Body A type test specimen and cuboid Type B test specimen carry out pull-out test.The cutting optimal of cube A type test specimen smears the repairing material of the present invention
Carry out bond (square that adhesive surface is about 50mm × 50mm) with cuboid Type B test specimen after material, the upper layer of A type test specimen again with
Drawing instrument bonds, and crack patching material consumption is 4ml.Identical cube A type test specimen and cuboid Type B test specimen are used
The SBS modified pitch of same amount bonds, and carries out contrast test, and test temperature is 25 DEG C.According to formula: P=(F/S) ×
103Calculate pull strength, wherein, P be pull strength (MPa), F be pulling force (kN), S be bond area (mm2), S=50mm ×
50mm=2500 (mm2), result of the test is shown in Table 1.
Table 1
From the pull-out test data of table 1 it can be seen that the cementitiousness of the patching material of the present invention is far longer than SBS modification
The cementitiousness of Colophonium, adhesion strength nearly reaches 2 times of SBS modified pitch, and the patching material of the explanation present invention has ratio
The more preferable repair efficiency of SBS modified pitch.
Test two: indirect tensile test on frozen-thaw
The anti-water damage ability of crack patching material is investigated by indirect tensile test on frozen-thaw.Asphalt uses AC-13 level
Joining, use Marshall compaction method shaped cylinder body test specimen, striking times is two-sided each 50 times, then at surface cutting width about
The crack of 5mm, the degree of depth about 15mm carries out the simulation of pavement crack.Respectively with patching material and the SBS modified pitch pair of the present invention
Test specimen after cutting carries out crack repairing, carries out comparative study with the marshal piece not carrying out cutting simultaneously.
Carry out asphalt indirect tensile test on frozen-thaw by the method for T 0729-2000 in JTG E20-2011, test data
Calculating cleavage strength and Ratio of split strength according to below equation, test data is shown in Table 2.
RT1=0.006287PT1/h1
RT2=0.006287PT2/h2
RT1And RT2Represent respectively and stretch intensity (MPa) without the Split-tension of Rolled of freeze-thaw cycle and freeze-thaw cycle test specimen；PT1And PT2
Represent the Test Loading Value for Loading (N) without freeze-thaw cycle and freeze-thaw cycle test specimen respectively；h1And h2Represent respectively without freeze-thaw cycle and
The height (mm) of freeze-thaw cycle test specimen；WithRepresent respectively and stretch without the Split-tension of Rolled of freeze-thaw cycle and freeze-thaw cycle test specimen
Average strength (MPa)；TSR represents indirect tensile test on frozen-thaw strength ratio (%).
Table 2
From the indirect tensile test on frozen-thaw data of table 2 it can be seen that utilize the repairing test specimen of the patching material of the present invention through freeze thawing
Average tensile splitting strength after circulation has almost no change, and utilizes the repairing test specimen of SBS modified pitch after freeze-thaw cycle
Average tensile splitting strength be declined slightly, further illustrate the present invention's in conjunction with freeze-thaw split tensile strength ratio (TSR) data
The patching material of polyurethanes mends a split more effective than the anti-water damage after mending a split with SBS modified pitch.
What deserves to be explained is, the patching material of the present invention is used not only for pavement crack, applies also for other concrete
Structures crack, such as cracking of wall surface, deck crack etc..
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. the patching material for concrete structures crack, it is characterised in that described patching material includes the first component
And second component, the volume ratio of described first component and described second component is 1:0.6～1.5, wherein,
Based on the percentage by weight accounting for described first component, described first component includes Oleum Ricini 10%-30%, polypropylene glycol
40%-60%, triethanolamine 10%-30%, Polyethylene Glycol 0%-10%, polyglycerol 0%-10% and tin dilaurate two fourth
Base stannum 0%-0.5%,
Based on the percentage by weight accounting for described second component, described second component includes methyl diphenylene diisocyanate 85%-
95%, polymethylene polyphenylene isocyanate 0%-15% and toluene di-isocyanate(TDI) 0%-10%.
Patching material for concrete structures crack the most according to claim 1, it is characterised in that by accounting for described
The percentage by weight meter of one component, described first component includes that the described Oleum Ricini of 15%-25%, the described of 45%-55% gather
Propylene glycol, the described triethanolamine of 15%-25%, the described Polyethylene Glycol of 2%-8%, 2%-8% described polyglycerol with
And the described dibutyl tin laurate of 0.1%-0.3%.
Patching material for concrete structures crack the most according to claim 1, it is characterised in that by accounting for described
The percentage by weight meter of two components, described second component includes the described methyl diphenylene diisocyanate of 90%-94%, 5%-
The described polymethylene polyphenylene isocyanate of 8% and the described toluene di-isocyanate(TDI) of 1%-5%.
Patching material for concrete structures crack the most according to claim 1, it is characterised in that described first group
Divide and the volume ratio of described second component is 1:0.8～1.2.
Patching material for concrete structures crack the most according to claim 1, it is characterised in that described repairing material
Material also includes the 3rd component, and described 3rd component is catalyst, and the consumption of described 3rd component is relative to described first component
Volume 0.01%～1%.
Patching material for concrete structures crack the most according to claim 5, it is characterised in that described 3rd group
It is selected from one or more in triethylene diamine, double-(2-methylaminoethyl) ether and N, N-dimethyl cyclohexyl amine.
7. the method for repairing and mending in a concrete structures crack, it is characterised in that described method for repairing and mending use such as claim 1 to
Patching material according to any one of 6, described method for repairing and mending comprises the following steps:
Preparation patching material, is carried out described first component and described second component according to the ratio that volume ratio is 1:0.6-1.5
Mixing, and add water and quickly stir 10 seconds-20 seconds, it is thus achieved that potting compound；And
Described potting compound is injected in concrete structures crack to be repaired, treats described potting compound curing molding, i.e. complete
Patch work.
The method for repairing and mending in concrete structures crack the most according to claim 7, it is characterised in that at preparation patching material
Time, the dosage of water is the 0.1%-3% of the volume relative to described first component.
The method for repairing and mending in concrete structures crack the most according to claim 7, it is characterised in that at preparation patching material
Time, adding the 3rd component, described 3rd component is catalyst, and the consumption of described 3rd component is relative to described first component
The 0.01%～1% of volume.
The method for repairing and mending in concrete structures crack the most according to claim 9, it is characterised in that by described first group
Point and the described second component method that carries out mixing according to the ratio that volume ratio is 1:0.6-1.5 be: will described first component with
Described second component mixes under normal temperature condition according to the ratio that volume ratio is 1:0.6-1.5.
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| CN111423838A (en) * | 2020-04-09 | 2020-07-17 | 湖北腾辰科技股份有限公司 | Low-viscosity pressureless grouting type crack repairing agent and preparation method thereof |
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