CN107721330A - Permanent seal cooling Identification Beneath Concrete Slabs injecting paste material and preparation method thereof - Google Patents
Permanent seal cooling Identification Beneath Concrete Slabs injecting paste material and preparation method thereof Download PDFInfo
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- CN107721330A CN107721330A CN201710954197.6A CN201710954197A CN107721330A CN 107721330 A CN107721330 A CN 107721330A CN 201710954197 A CN201710954197 A CN 201710954197A CN 107721330 A CN107721330 A CN 107721330A
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- raw material
- injecting paste
- weight fraction
- concrete slabs
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention provides a kind of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material and preparation method thereof, including following raw material：Cement, flyash, water reducer and water, in addition to compound A, compound B and complexing agent.Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 60%~70%, and asbestos are 5%~10%, and attapulgite is 20%~30%, and the weight fraction sum of raw material is 100%；Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, and super absorbent resin is 5%~10%, and MgO expansion agent is 10%~15%, and the weight fraction sum of raw material is 100%.The injecting paste material gel of the present invention is fast, water resistant good dispersion, fluidity are big, good penetrability, it can penetrate into and be reinforced the soil body and roadbase or have in the interface of certain active mineral material, viscosity is high, stability is good, the rheology loss of slurry can be reduced, and freeze proof, impervious good, corrosion resistance is good under snow melt salt action.
Description
Technical field
The invention belongs to road engineering material field, is related to road deck rising pouring pulp material, and in particular to a kind of permanent seal cooling water
Cement concrete road deck rising pouring pulp material and preparation method thereof.
Background technology
Cement concrete pavement has service life length as a kind of high grade pavement structure type, and maintenance work amount is small,
Energy resource consumption is few, easy construction, the advantages that to Traffic volume level and strong environmental suitability.Since the 1980s, the water in China
Cement concrete road surface obtains fast development.According to statistics, by the end of the year in 2016, be open to traffic total kilometrage about 5,000,000 of highway in China is public
In, all kinds of rating cement road surfaces account for paved road total kilometrage 60% or so.But due to Pavement Design and unreasonable construction, lotus of driving a vehicle
Carry that overweight, material composition is improper, and the reasons such as road surface drainage is not smooth, China's cement concrete pavement behaviour in service is bad, uses the longevity
Life is significantly less than design life, and pavement crack, road deck fracture, disease of coming to nothing are very universal.It further investigation reveals that, concrete
Road deck major cause of failure is relevant with the support force deficiency of basic unit, and rigid base and semi-rigid type base are to cement concrete
The influence of surface layer has larger difference.
In order to improve the bearing capacity of basic unit's road pavement, extend the service life on road surface, one is usually used in present engineering
Injecting paste material is injected into the space of basic unit by kind non-excavation type reinforcement technique, this technology by high pressure, makes cracking or broken
Cement stabilized macadam cohesion, improve the globality of basic unit, base layer structure defect is made up, therefore can improve the carrying of basic unit
Ability, while also soft soil matrix is reinforced using this technology, injecting paste material can chemically react with soil for a long time, can make
Soil solidifying, the stable purpose of soil matrix is progressivelyed reach, and with economizing on resources, convenient and quick construction is small etc. to traffic impact
Advantage.But with the extensive use of grout material, some problems present in engineering also are reflected out, such as：Grout material and base
The caking property of layer is bad, water resistant damage poor performance, to the poor durability of old pavement maintenance.
The content of the invention
For the deficiencies in the prior art, it is an object of the present invention to provide a kind of permanent seal cooling cement-concrete road
Panel rising pouring pulp material and preparation method thereof, solves the technical problem of the poor durability of existing grout material road pavement maintenance.
In order to solve the above-mentioned technical problem, the application, which adopts the following technical scheme that, is achieved：
A kind of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material, including following raw material：Cement, flyash, water reducer
And water, in addition to compound A, compound B and complexing agent；
Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 60%~70%, stone
Cotton is 5%~10%, and attapulgite is 20%~30%, and the weight fraction sum of raw material is 100%；
Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, and super absorbent resin is
5%~10%, MgO expansion agent is 10%~15%, and the weight fraction sum of raw material is 100%.
The present invention also has following distinguishing feature：
Specifically, in terms of weight fraction, it is made up of following raw material：Cement be 32%~38%, flyash be 22%~
30%, water reducer be 0.35%~0.55%, complexing agent be 3%~5%, compound A be 5%~8%, compound B be 4%~
7%, surplus is water, and the weight fraction sum of raw material is 100%.
Preferably, in terms of weight fraction, it is made up of following raw material：Cement is 32%, flyash 27%, and water reducer is
0.50%, complexing agent 5%, compound A is 8%, and compound B is 7%, and surplus is water, and the weight fraction sum of raw material is
100%；
Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 70%, and asbestos are
5%, attapulgite 25%；
Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, and super absorbent resin is
5%, MgO expansion agent 15%.
Preferably, described complexing agent is powdered ethylenediamine tetraacetic methene sodium phosphate, and fineness is 300 mesh.
Preferably, described cement is 42.5 grades of quick hardening sulphoaluminate cements, and apparent density is 3.0~3.2g/cm3。
Preferably, described flyash is one-level flyash, and apparent density is 2.1~2.5g/cm3。
Preferably, described water reducer is powdered sulfamate formaldehyde condensation products, water-reducing rate 25%.
Preferably, described precipitated silica uses powdered precipitated silica；Described asbestos use cotton-shaped stone
Cotton；Described attapulgite water content≤15%, fineness are 300 mesh, viscosity >=3000cps.
Preferably, described super absorbent resin uses super absorbent resin of the water absorption rate for 60~100g/g.
The present invention also protects a kind of preparation method of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as described above,
This method follows the steps below：
Step 1, each raw material is weighed by proportioning, it is standby；
Step 2, cement and flyash are mixed and stir to obtain mixture；
Step 3, first precipitated silica and attapulgite are stirred, then add stone under stirring
Cotton, asbestos is homogeneously dispersed in precipitated silica and attapulgite, obtain compound A；
Step 4, compound B is obtained after sepiolite, super absorbent resin and MgO expansion agent are stirred；
Step 5, after water reducer is mixed with water, pour into agitator；Then mixture made from step 2 is added simultaneously
Stirring；Compound A, compound B and complexing agent are added, after quickly stirring 4 minutes, obtains permanent seal cooling Cement Concrete Pavement Slab
Rising pouring pulp material.
Compared with prior art, beneficial has the technical effect that the present invention：
(I) in permanent seal cooling Identification Beneath Concrete Slabs injecting paste material provided by the present invention compound A addition, play
Thickening and the effect of thixotroping, increase slurry and concrete slab and the bonding of basic unit, while volcano ash effect is played, improve slurry
Later strength, compactness is improved, improve the freeze proof and water resistant performance of flushing at road deck bottom.
(II) in permanent seal cooling Identification Beneath Concrete Slabs injecting paste material provided by the present invention compound B addition, rise
Supplied water to interior maintenance is lasting, prevent from shrinking, there is the effect of microdilatancy, while prevent rainwater from being further seeped into basic unit and road down
Base.
(III) the complexing agent ethylenediamine tetraacetic in permanent seal cooling Identification Beneath Concrete Slabs injecting paste material provided by the present invention
Methene sodium phosphate, it can promote the scattered of other molecules with water reducer sulfamate formaldehyde condensation products collective effect, promote
The aquation of binder materials, each phase intensity of grout material is improved, reduce grouting pressure, improve the stability of slurry, reduce rheology
Loss, so as to improve the supportive of whole roadbed.
(IV) whole technique preparation flow of the invention is simple, cost is cheap and the injecting paste material gel is fast, water resistant is disperseed
Property is good, fluidity is big, good penetrability, can penetrate into and be reinforced the soil body, roadbase roadbed and have certain active mineral material
In the interface of material, viscosity is high, and stability is good, can reduce the rheology loss of slurry, and frost resistance is good, resists under snow melt salt action
Corrosivity is good.
Explanation further is explained in detail to present invention work with reference to embodiments.
Embodiment
Specific embodiment of the invention given below is, it is necessary to which explanation is that the invention is not limited in implement in detail below
Example, all equivalents done on the basis of technical scheme each fall within protection scope of the present invention.
Embodiment 1：
The present embodiment provides a kind of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material, the injecting paste material, with weight point
Number meter, is made up of following raw material：Cement is 32%, flyash 27%, water reducer 0.50%, complexing agent 5%, compound
A is 8%, and compound B is 7%, water 20.5%；
Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 70%, and asbestos are
5%, attapulgite 25%；
Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, and super absorbent resin is
5%, MgO expansion agent 15%.
In the present embodiment：
Complexing agent is powdered ethylenediamine tetraacetic methene sodium phosphate, and fineness is 300 mesh.
Cement is 42.5 grades of quick hardening sulphoaluminate cements, and apparent density is 3.0~3.2g/cm3。
Flyash is one-level flyash, and apparent density is 2.1~2.5g/cm3。
Water reducer is powdered sulfamate formaldehyde condensation products, water-reducing rate 25%.
Precipitated silica uses powdered precipitated silica；Described asbestos use cotton-shaped asbestos；Described bumps
Rod soil water content≤15%, fineness are 300 mesh, viscosity >=3000cps.
Super absorbent resin selects the conventional super absorbent resin in this area, and control water absorption rate is in 60~100g/g.
The preparation method of the permanent seal cooling Identification Beneath Concrete Slabs injecting paste material of the present embodiment, this method is according to following step
It is rapid to carry out：
Step 1, each raw material is weighed by proportioning, it is standby；
Step 2, cement and flyash are mixed and stir to obtain mixture；
Step 3, first precipitated silica and attapulgite are stirred, then add stone under stirring
Cotton, asbestos is homogeneously dispersed in precipitated silica and attapulgite, obtain compound A；
Step 4, compound B is obtained after sepiolite, super absorbent resin and MgO expansion agent are stirred；
Step 5, after water reducer is mixed with water, pour into agitator；Then mixture made from step 2 is added simultaneously
Stirring；Compound A, compound B and complexing agent are added, after quickly stirring 4 minutes, obtains permanent seal cooling Cement Concrete Pavement Slab
Rising pouring pulp material.
Performance test：To verify that the permanent seal cooling Identification Beneath Concrete Slabs injecting paste material of the present embodiment has well resistance to
Long property, carries out performance test to injecting paste material made from the present embodiment, testing experiment include resistance to compression, it is anti-reckon the actual amount after a discount test, fluidity and
Free swelling rate, referring in particular to《Polymer-modified cement mortar testing regulations》(GB50728-2011).
The performance test results of the present embodiment are as shown in table 1.
Embodiment 2：
The present embodiment provides a kind of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material, the injecting paste material, with weight point
Number meter, is made up of following raw material：Cement is 35%, flyash 25%, water reducer 0.55%, complexing agent 5%, compound
A is 6%, and compound B is 7%, water 21.45%.
Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 60%, and asbestos are
15%, attapulgite 25%；
Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, and super absorbent resin is
5%, MgO expansion agent 15%.
The species of each raw material and dosage require same as Example 1 in the present embodiment.
The preparation method of the permanent seal cooling Identification Beneath Concrete Slabs injecting paste material of the present embodiment and 1 basic phase of embodiment
Together.
The performance test process of the present embodiment is substantially the same manner as Example 1, the performance test results such as institute of table 1 of the present embodiment
Show.
Embodiment 3：
The present embodiment provides a kind of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material, the injecting paste material, with weight point
Number meter, is made up of following raw material：Cement is 38%, flyash 22%, water reducer 0.45%, complexing agent 5%, compound
A is 6%, and compound B is 5%, water 23.55%；
Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 70%, and asbestos are
10%, attapulgite 20%；
Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, and super absorbent resin is
10%, MgO expansion agent 10%.
The species of each raw material and dosage require same as Example 1 in the present embodiment.
The preparation method of the permanent seal cooling Identification Beneath Concrete Slabs injecting paste material of the present embodiment and 1 basic phase of embodiment
Together.
The performance test process of the present embodiment is substantially the same manner as Example 1, the performance test results such as institute of table 1 of the present embodiment
Show.
Embodiment 4：
The present embodiment provides a kind of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material, the injecting paste material, with weight point
Number meter, is made up of following raw material：Cement is 34%, flyash 30%, water reducer 0.35%, complexing agent 3%, compound
A is 5%, and compound B is 4%, water 23.65%；
Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 60%, and asbestos are
10%, attapulgite 30%；
Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, and super absorbent resin is
10%, MgO expansion agent 10%.
The species of each raw material and dosage require same as Example 1 in the present embodiment.
The preparation method of the permanent seal cooling Identification Beneath Concrete Slabs injecting paste material of the present embodiment and 1 basic phase of embodiment
Together.
The performance test process of the present embodiment is substantially the same manner as Example 1, the performance test results such as institute of table 1 of the present embodiment
Show.
Comparative example 1：
This comparative example provides a kind of Identification Beneath Concrete Slabs injecting paste material, the injecting paste material and 1 basic phase of embodiment
Together, differ only in, be not added with complexing agent and compound B, the constituent content that complexing agent and compound B are substituted with cement causes original
The parts by weight sum of material is 100%.
The species of each raw material and dosage require same as Example 1 in this comparative example.
The preparation method of the Identification Beneath Concrete Slabs injecting paste material of this comparative example is substantially the same manner as Example 1.
The performance test process of this comparative example is substantially the same manner as Example 1, the performance test results such as institute of table 1 of this comparative example
Show.
Comparative example 2：
This comparative example provides a kind of Identification Beneath Concrete Slabs injecting paste material, the injecting paste material and 1 basic phase of embodiment
Together, differ only in, be not added with complexing agent and compound A, the constituent content that complexing agent and compound A are substituted with cement causes original
The parts by weight sum of material is 100%.
The species of each raw material and dosage require same as Example 1 in this comparative example.
The preparation method of the Identification Beneath Concrete Slabs injecting paste material of this comparative example is substantially the same manner as Example 1.
The performance test process of this comparative example is substantially the same manner as Example 1, the performance test results such as institute of table 1 of this comparative example
Show.
Comparative example 3：
This comparative example provides a kind of Identification Beneath Concrete Slabs injecting paste material, the injecting paste material and 1 basic phase of embodiment
Together, differ only in, be not added with compound A and compound B, caused with cement alternative composite thing A and compound B constituent content
The parts by weight sum of raw material is 100%.
The species of each raw material and dosage require same as Example 1 in this comparative example.
The preparation method of the Identification Beneath Concrete Slabs injecting paste material of this comparative example is substantially the same manner as Example 1.
The performance test process of this comparative example is substantially the same manner as Example 1, the performance test results such as institute of table 1 of this comparative example
Show.
Comparative example 4：
This comparative example provides a kind of Identification Beneath Concrete Slabs injecting paste material, the injecting paste material and 1 basic phase of embodiment
Together, differ only in, be not added with compound B, the parts by weight sum of raw material is caused with cement alternative composite thing B constituent content
For 100%.
The species of each raw material and dosage require same as Example 1 in this comparative example.
The preparation method of the Identification Beneath Concrete Slabs injecting paste material of this comparative example is substantially the same manner as Example 1.
The performance test process of this comparative example is substantially the same manner as Example 1, the performance test results such as institute of table 1 of this comparative example
Show.
Comparative example 5：
This comparative example provides a kind of Identification Beneath Concrete Slabs injecting paste material, the injecting paste material and 1 basic phase of embodiment
Together, differ only in, be not added with compound A, the parts by weight sum of raw material is caused with cement alternative composite thing A constituent content
For 100%.
The species of each raw material and dosage require same as Example 1 in this comparative example.
The preparation method of the Identification Beneath Concrete Slabs injecting paste material of this comparative example is substantially the same manner as Example 1.
The performance test process of this comparative example is substantially the same manner as Example 1, the performance test results such as institute of table 1 of this comparative example
Show.
Comparative example 6：
This comparative example provides a kind of Identification Beneath Concrete Slabs injecting paste material, the injecting paste material and 1 basic phase of embodiment
Together, differ only in, be not added with complexing agent, the constituent content that complexing agent is substituted with cement make it that the parts by weight sum of raw material is
100%.
The species of each raw material and dosage require same as Example 1 in this comparative example.
The preparation method of the Identification Beneath Concrete Slabs injecting paste material of this comparative example is substantially the same manner as Example 1.This is right
The performance test process of ratio is substantially the same manner as Example 1, and the performance test results of this comparative example are as shown in table 1.
The injecting paste material the performance test results of table 1
As shown in Table 1：
1. the contrast of embodiment 1~4 is understood：The rupture strength of the injecting paste material of embodiment 1~4, compression strength and freely swollen
Swollen rate is far above code requirement；Mobility is larger and more stable, meets code requirement；Show the slip casting material of embodiment 1~4
Material has good workability and workability, can significantly improve the intensity and durability at whole slip casting plate bottom.Wherein, embodiment
1 injecting paste material combination property is optimal.
2. embodiment 1 is understood with the contrast of comparative example 1~3：In the case of other conditions identical, compound A, compound B
In complexing agent, only plus the injecting paste material that is obtained of any of compound A, compound B or complexing agent, in addition to mobility,
Rupture strength, compression strength and free swelling rate can significantly reduce, and be unsatisfactory for code requirement.Show, single compound
A, compound B or complexing agent, the intensity and durability at whole slip casting plate bottom can not be improved.
3. embodiment 1 is understood with the contrast of comparative example 4~5：In the case of other conditions identical, compound A, compound B
In complexing agent, only add compound A and complexing agent or only add compound B and the injecting paste material of complexing agent acquisition, in addition to mobility,
Rupture strength, compression strength and free swelling rate can significantly reduce, and be unsatisfactory for code requirement.Show, only plus compound A and
Complexing agent or only plus the injecting paste material that obtains of compound B and complexing agent, it can not improve the intensity at whole slip casting plate bottom and durable
Property.
4. embodiment 1 is understood with the contrast of comparative example 6：In the case of other conditions identical, only add compound A and compound
The rupture strength and free swelling rate for the injecting paste material that B is obtained can reduce.Show, only add what compound A and compound B was obtained
Injecting paste material, it is impossible to improve the intensity and durability at whole slip casting plate bottom.
To sum up experiment shows, injecting paste material prepared by the present invention service behaviour, mechanics under the collective effect of various components
Performance and excellent durability, effective solution party is provided to solve the technical problem of concrete flag bottom poor durability
Method, have broad application prospects.
The injecting paste material gel of the present invention is fast, water resistant good dispersion, fluidity are big, good penetrability, can penetrate into and be reinforced
The soil body and roadbase have in the interface of certain active mineral material, and viscosity is high, and stability is good, can reduce the rheology of slurry
Loss, and it is freeze proof, impervious good, and corrosion resistance is good under snow melt salt action.
Claims (10)
1. a kind of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material, including following raw material：Cement, flyash, water reducer and
Water, it is characterised in that also including compound A, compound B and complexing agent；
Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 60%~70%, and asbestos are
5%~10%, attapulgite is 20%~30%, and the weight fraction sum of raw material is 100%；
Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, super absorbent resin 5%
~10%, MgO expansion agent is 10%~15%, and the weight fraction sum of raw material is 100%.
2. permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as claimed in claim 1, it is characterised in that with weight fraction
Meter, is made up of following raw material：Cement is 32%~38%, and flyash is 22%~30%, and water reducer is 0.35%~0.55%,
Complexing agent is 3%~5%, and compound A is 5%~8%, and compound B is 4%~7%, and surplus is water, the weight fraction of raw material
Sum is 100%.
3. permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as claimed in claim 2, it is characterised in that with weight fraction
Meter, is made up of following raw material：Cement is 32%, flyash 27%, water reducer 0.50%, complexing agent 5%, compound A
For 8%, compound B is 7%, and surplus is water, and the weight fraction sum of raw material is 100%；
Described compound A, in terms of weight fraction, it is made up of following raw material：Precipitated silica is 70%, asbestos 5%, recessed
Convex rod soil is 25%；
Described compound B, in terms of weight fraction, it is made up of following raw material：Sepiolite is 80%, super absorbent resin 5%,
MgO expansion agent is 15%.
4. permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as claimed in claim 1, it is characterised in that described complexing
Agent is powdered ethylenediamine tetraacetic methene sodium phosphate, and fineness is 300 mesh.
5. permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as claimed in claim 1, it is characterised in that described cement
For 42.5 grades of quick hardening sulphoaluminate cements, apparent density is 3.0~3.2g/cm3。
6. permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as claimed in claim 1, it is characterised in that described fine coal
Ash is one-level flyash, and apparent density is 2.1~2.5g/cm3。
7. permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as claimed in claim 1, it is characterised in that described diminishing
Agent is powdered sulfamate formaldehyde condensation products, water-reducing rate 25%.
8. permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as claimed in claim 1, it is characterised in that described precipitation
Silica uses powdered precipitated silica；Described asbestos use cotton-shaped asbestos；Described attapulgite water content≤
15%, fineness is 300 mesh, viscosity >=3000cps.
9. permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as claimed in claim 1, it is characterised in that described high suction
Water-base resin uses super absorbent resin of the water absorption rate for 60~100g/g.
10. a kind of permanent seal cooling Identification Beneath Concrete Slabs injecting paste material as described in claim 1 to 9 any claim
Preparation method, this method follow the steps below：
Step 1, each raw material is weighed by proportioning, it is standby；
Step 2, cement and flyash are mixed and stir to obtain mixture；
Step 3, first precipitated silica and attapulgite are stirred, then add asbestos under stirring, make
Asbestos are homogeneously dispersed in precipitated silica and attapulgite, obtain compound A；
Step 4, compound B is obtained after sepiolite, super absorbent resin and MgO expansion agent are stirred；
Step 5, after water reducer is mixed with water, pour into agitator；Then add mixture made from step 2 and stir
Mix；Compound A, compound B and complexing agent are added, after quickly stirring 4 minutes, obtains permanent seal cooling Identification Beneath Concrete Slabs
Injecting paste material.
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| CN201710954197.6A CN107721330B (en) | 2017-10-13 | 2017-10-13 | Durable cement concrete pavement slab bottom grouting material and preparation method thereof |
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| CN201710954197.6A CN107721330B (en) | 2017-10-13 | 2017-10-13 | Durable cement concrete pavement slab bottom grouting material and preparation method thereof |
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Cited By (3)
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| CN109095868A (en) * | 2018-10-25 | 2018-12-28 | 合肥慧林建材有限公司 | A kind of novel bridge distress in concrete grout material |
| CN109279849A (en) * | 2018-10-25 | 2019-01-29 | 合肥慧林建材有限公司 | A kind of preparation method of road and bridge cement base crack grout material |
| CN110194628A (en) * | 2019-06-27 | 2019-09-03 | 长安大学 | Buffer crack-resistant layer, preparation method, concrete road surface structure and preparation method thereof |
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| CN110194628A (en) * | 2019-06-27 | 2019-09-03 | 长安大学 | Buffer crack-resistant layer, preparation method, concrete road surface structure and preparation method thereof |
| CN110194628B (en) * | 2019-06-27 | 2022-01-18 | 长安大学 | Buffering anti-cracking layer, preparation method thereof, concrete pavement structure and preparation method thereof |
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