CN108164221A - A kind of grouting agent and preparation method thereof - Google Patents
A kind of grouting agent and preparation method thereof Download PDFInfo
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- CN108164221A CN108164221A CN201810082966.2A CN201810082966A CN108164221A CN 108164221 A CN108164221 A CN 108164221A CN 201810082966 A CN201810082966 A CN 201810082966A CN 108164221 A CN108164221 A CN 108164221A
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- grouting agent
- grouting
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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
- C04B28/04—Portland 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
A kind of grouting agent and preparation method thereof is related to a kind of concrete admixture and preparation method thereof.It can be used for the fields such as the grouting of Equipment Foundations, the anchor grouting of earth anchor system according to the grouting agent obtained by this method.By 7 12 parts of silica flour, 24 parts of flyash, 35 parts of polycarboxylic acids, 1 1.5 parts of magnesia, 0 0.05 parts of sodium thiosulfate, 0.3 part of sodium sulphate, 0.1 0.2 parts of β naphthalene sulfonic acid-formaldehyde condensation products, 0.01 part of organosilicon, saponified 0.1 part of rosin, 0.2 0.3 parts and 550 650 parts cement of sodium carbonate.Grouting agent prepared by the present invention, dosage between institute's addO-on therapy can be regulated and controled according to the variety classes and different temperature in use of used cement, so as to make had and normal use and the performance of grouting agent can not had an impact when the model of cement is different in a variety of contexts by the grouting agent for preparing of the present invention.
Description
Technology neighborhood
The present invention relates to a kind of concrete admixture and preparation method thereof is related to, can be used for setting according to the grouting agent obtained by this method
The fields such as the grouting on standby basis, the anchor grouting of earth anchor system.
Background technology
The preparation of grouting agent is mainly more by high efficiency water reducing agent, swelling agent, early strength agent, retarder, antifoaming agent, plasticiser etc.
Kind material mixes and stirs.And grouting agent prepared by the present invention does not add in main volume stability component water during preparation
Mud has certain limitation this is mainly due to common grouting agent during use, it is easy to by cement type and
The influence of environmental factor and the defects of caused in performance to the use of grouting agent.
China Patent Publication No. CN103482899A discloses a kind of hole path pressure grouting agent and preparation method thereof, in this invention
The components such as super plasticizer, water-retaining agent, foaming agent, swelling agent are added to, prepared grouting agent can not during use
Bleeding is not stratified, and durability is good, and secured with concrete binding, easy to use.But grouting agent children's folk rhymes prepared by the present invention
With the common disadvantage of common grouting agent, this grouting agent Modulatory character during use is selectively poor, does not have more
It is used under kind environment and under the conditions of various cement is selectable.
China Patent Publication No. CN102092982A discloses a kind of concrete pipeline mud-jacking agent and preparation method thereof, by this
It invents in the grouting agent prepared and is added to swelling agent, retarder, corrosion inhibitor, prepared by air entraining agent etc..Pressure prepared by the invention
Slurry agent has high full property during use, durable firm, can carry out disposable mud jacking construction and have no shrinkage phenomenon, but
Being introduced during preparation has concrete the chlorion of corrosiveness, and the presence of chlorion can directly affect the resistance to of concrete
Long property.
Invention content
The defects of purpose of the present invention is intended to overcome the prior art, provide one kind can in a variety of contexts normal use with
And the preparation method of the grouting agent of grouting agent performance is not influenced when cement model is different.
Grouting agent of the present invention, by 7-12 parts of silica flour, 2-4 parts of flyash, 3-5 parts of polycarboxylic acids, magnesia 1-1.5
Part, 0-0.05 parts of sodium thiosulfate, 0.3 part of sodium sulphate, 0.1-0.2 parts of beta-naphthalenesulfonic-acid formaldehyde condensation compound, 0.01 part of organosilicon, pine
0.1 part of perfumed soap compound, 0.2-0.3 parts of sodium carbonate and 550-650 parts of cement.
The cement is any one in 42.5 type Portland cements or 52.5 type portland cements.
The preparation method of grouting agent of the present invention, preparation method are：
（A）The preparation of grouting agent head product
A, it is separately added into 7-12 parts of silica flours in pulvis reaction kettle, 2-4 parts of flyash, 3-5 parts of polycarboxylic acids, 1-1.5 parts of magnesia,
0.15-0.3 parts of sodium sulphate, 0.1-0.2 parts of beta-naphthalenesulfonic-acid formaldehyde condensation compounds, 0.01 part of organosilicon, 0.1 part of rosin it is saponified and
0.2-0.3 parts of sodium carbonate；
B, pulvis blender is opened, and it is 30 rpms to control the mixing speed of 10 minutes before blender；
C, when all pulvis stir evenly, the mixing speed of pulvis blender is adjusted, mixing speed is adjusted to 40 turns often
Minute, and continue stirring 20-40 minutes；
D, after all reaction raw materials are stirred evenly, the head product of grouting agent is obtained, the head product of grouting agent is moved into material storage kettle
In store for future use；
（B）The compounding of grouting agent
E, the head product of the grouting agent prepared is taken out spare；
F, the 42.5 type Portland cements for being equivalent to 30 times of head product weight are added in the head product of grouting agent, add in 0-
0-05 parts of sodium thiosulfate, add in sodium thiosulfate after mixing to obtain the final product.
According to step f, and according to the specific environment temperature constructed at that time, when temperature is less than 5 DEG C, 0.05 part of addition
Sodium thiosulfate；When temperature adds 0.01 part of sodium thiosulfate when between 5 DEG C to 25 DEG C；When temperature is higher than 25 DEG C, then do not have to
Add sodium thiosulfate.
Grouting agent according to the present invention, the specific features of institute's reagent adding are as follows：
1st, silica flour：The grain size of silica flour is superfine, can carry out good filling, and can be generated with hydrated product to the gap of cement
Gel, the addition of silica flour can effectively improve the intensity of cement and the resistance to compression of cement, anti-folding, and impact resistance simultaneously improves body
The wearability of system.
2nd, flyash：All it is to be conducive to shape containing silica, alundum (Al2O3) and free calcium oxide in flyash
Into the advantageous component of gel, it can be good at the gap in filling concrete, and the calcium sulfate in flyash also helps increasing
The early strength of reinforced concrete.
3rd, polycarboxylic acids：Polycarboxylic acids is pulvis.It is added in grouting agent as water-reducing agent, the addition of water-reducing agent can be effective
The use of diminishing water, and working strength and the slump that can effectively keep concrete are added in using polycarboxylic acids as water-reducing agent
Degree.
4th, magnesia：Magnesia is good swelling agent, and the addition of swelling agent can react with cement, and cement is made to exist
Aquation initial stage generate certain expansion so as to inhibiting concrete because the overpull stress that is generated during the normal contraction in hardening process and
Caused by crack.The addition of swelling agent can generate certain volume expansion so as to be compensated to the volume contraction of concrete,
The addition of magnesia can effectively maintain the volume stability of concrete and keep its durability.
5th, sodium thiosulfate：Sodium thiosulfate is good antifreezing agent, can effectively reduce the freezing point of substance, make by
Grouting agent prepared by the present invention can adapt to wider array of temperature range, and can improve the early strength of cement, prevent mud jacking
Agent is generated frost heave stress and is destroyed due to freezing for moisture.It but can be according to reality in the grouting agent prepared in the present invention
The temperature of construction carries out choosing whether to add in antifreezing agent component.
6th, sodium sulphate：Sodium sulphate is early strength agent of good performance, and the addition of sodium sulphate can significantly improve grouting agent
Early strength, workability, later strength and durability.And apply in this grouting agent, sodium sulphate can be according to used cement
Type carries out rational components by weight percent proportioning.
7th, beta-naphthalenesulfonic-acid formaldehyde condensation compound：Beta-naphthalenesulfonic-acid formaldehyde condensation compound is good retarder, the dispersion to cement
Property is good, and the heat of hydration and the volume that can reduce cement initial stage are small, the high slow setting of low air-entraining performance, and water-reducing rate is higher and to cement
Enhancing effect is good.
8th, organosilicon：Organosilicon is added to as antifoaming agent in grouting agent, and the addition of organosilicon can effectively inhibit not
The foam of generation and it can effectively break the foam generated, the reduction of foam volume is then conducive to early increase concrete
Intensity and improve its wearability, the addition of antifoaming agent also is able to effectively reduce the viscosity of liquid.And organosilicon is in mud jacking
Dispersion is exceedingly fast in agent, being exceedingly fast to be mixed with other components in grouting agent.
9th, rosin is saponified：Saponified rosin is good surface reactive material, is that can significantly reduce solution surface
The plasticiser of tension.It can make to generate a large amount of small equally distributed bubble, equally distributed minute bubbles in mixture
The workability of mixture can effectively be improved, improve frost resistance and impermeability.
10th, sodium carbonate：Sodium carbonate is added to as corrosion inhibitor in grouting agent, can be adsorbed and be formed adsorbed film in cathodic region
Rust is hindered so as to prevent or reduce the cathodic process of electrochemical reaction in mixture.Corrosion inhibitor can effectively lose harmful ion
Its corrosive power is lost or reduces to delay the speed of corrosion and then extend the usage time of mixture.
Grouting agent prepared by the present invention, dosage between institute's addO-on therapy can according to the variety classes of used cement with
And different temperature in use is regulated and controled, so as to make had and can normally be made in a variety of contexts by grouting agent prepared by this patent
With and when cement model it is different when the performance of grouting agent is not had an impact.
The properties for usually adjusting using a large amount of outer adding assistant in concrete and improving concrete.And grouting agent
Use primarily directed to the filling of various prestress pipes, the grouting of Equipment Foundations, the anchor grouting of earth anchor system and each
The fields such as the gap grouting of class large-sized concrete object.Irreplaceable work is usually played in the use of grouting agent in specific place
With.And the use of various grouting agents on the market is frequently subjected to the influence of the external conditions such as temperature, cement type at present.Therefore,
This invention address that preparing a kind of environment by outside is influenced smaller grouting agent, grouting agent prepared by the present invention can be according to tool
The environment of body and the characteristic of material carry out performance of the macro adjustments and controls so as to which grouting agent be made to reach excellent.The main base of the present invention
The dosage of early strength agent in different strength of cement type adjustment grouting agents.And it can pass through when the use in harsh environment
The dosage of antifreezing agent is adjusted to widen the use temperature range of this grouting agent.In addition to this, anti-corrosion is also added into grouting agent
The ingredients such as agent, retarder, swelling agent, preservative, surfactant adjust the grouting agent for preparing of the present invention and different cement
Actual performance when being used.
Specific embodiment
With reference to embodiment, the present invention is further illustrated, but not limited to the examples.
Embodiment 1
Grouting agent of the present invention and preparation method thereof, the grouting agent major design described in the present embodiment is with 42.5 type silicates
Cement and 52.5 type portland cements compare, and the specific preparation method of this grouting agent is as follows：
First, the preparation method of grouting agent
（One）Cement used is the cement of normal silicate 42.5
Step 1：The preparation of grouting agent head product
1st, 10 parts of silicon ashes, 3 parts of flyash, 3 parts of polycarboxylic acids, 1 part of magnesia, 0.3 part of sulfuric acid are separately added into pulvis reaction kettle
Sodium, 0.2 part of beta-naphthalenesulfonic-acid formaldehyde condensation compound, 0.01 part of organosilicon, 0.1 part of rosin is saponified, 0.3 part of sodium carbonate.
2nd, pulvis blender is opened, and it is 30 rpms to control the speed that halves of 10 minutes before blender.
3rd, when all pulvis stir evenly substantially, the mixing speed of pulvis blender is adjusted, mixing speed is adjusted
To 40 rpms, and continue stirring 30 minutes.
4th, the head product of grouting agent is moved in material storage kettle after all reaction raw materials are stirred evenly and is stored for future use.
Step 2：The compounding of grouting agent
1st, it is the head product of the grouting agent prepared taking-up part is spare.
2nd, addition is equivalent to 42.5 type Portland cements of 30 times of head product in the head product of grouting agent, and according to
The specific environment temperature constructed at that time, if temperature in 5 DEG C hereinafter, adding 0.05 part of sodium thiosulfate again in system；It is if warm
Spend 0.01 part of sodium thiosulfate of addition when between 5 DEG C to 25 DEG C；If temperature is higher than 25 DEG C, addition sodium thiosulfate is not had to.
Added raw material and cement are adequately stirred evenly with the head product of grouting agent spare.
Embodiment 2
（One）Cement used is the cement of normal silicate 52.5
Step 1：The preparation of grouting agent head product
1st, 10 parts of silicon ashes, 3 parts of flyash, 5 parts of polycarboxylic acids, 1 part of magnesia, 0.15 part of sulfuric acid are separately added into pulvis reaction kettle
Sodium, 0.1 part of beta-naphthalenesulfonic-acid formaldehyde condensation compound, 0.01 part of organosilicon, 0.1 part of rosin is saponified, 0.3 part of sodium carbonate.
2nd, pulvis blender is opened, and it is 30 rpms to control the speed that halves of 10 minutes before blender.
3rd, when all pulvis stir evenly substantially, the mixing speed of pulvis blender is adjusted, mixing speed is adjusted
To 40 rpms, and continue stirring 30 minutes.
4th, the head product of grouting agent is moved in material storage kettle after all reaction raw materials are stirred evenly and is stored for future use.
Step 2：The compounding of grouting agent
1st, it is the head product of the grouting agent prepared taking-up part is spare.
2nd, addition is equivalent to 52.5 type Portland cements of 30 times of head product in the head product of grouting agent, and according to
The specific environment temperature constructed at that time, if temperature in 5 DEG C hereinafter, adding 0.05 part of sodium thiosulfate again in system；It is if warm
Spend 0.01 part of sodium thiosulfate of addition when between 5 DEG C to 25 DEG C；If temperature is higher than 25 DEG C, addition sodium thiosulfate is not had to.
Added raw material and cement are adequately stirred evenly with the head product of grouting agent spare.
In two embodiments, the design of listed specific component is as shown in the table：
| Serial number | Components by weight percent designs（Part） | 42.5 Portland cements | 52.5 Portland cements |
| 1 | Silica flour | 10 | 10 |
| 2 | Flyash | 3 | 3 |
| 3 | Polycarboxylic acids | 3 | 5 |
| 4 | Magnesia | 1 | 1 |
| 5 | Sodium sulphate | 0.3 | 0.15 |
| 6 | Beta-naphthalenesulfonic-acid formaldehyde condensation compound | 0.2 | 0.1 |
| 7 | Organosilicon | 0.01 | 0.01 |
| 8 | Rosin is saponified | 0.1 | 0.1 |
| 9 | Sodium carbonate | 0.3 | 0.3 |
| 10 | Cement | 600 | 600 |
And according to specific environment temperature, the component design of sodium thiosulfate is as shown in the table：
| Environment temperature（℃） | 42.5 Portland cements | 52.5 Portland cements |
| T ＜ 5 | 0.05 part | 0.05 part |
| 5 ＜ T ＜ 25 | 0.01 part | 0.01 part |
| 25 ＜ T | 0 part | 0 part |
2nd, the use step of grouting agent
1st, the design of water-cement ratio finds the grouting agent of the present invention according to the requirement of the standard of grouting material and repeatedly repetition test comparison
Each performance such as intensity and mobile performance of the ratio of mud when being designed as 0.15 it is best.Therefore it sets in the actual use process
The grouting agent that 150 parts of water of addition are counted with 850 parts is used cooperatively.
2nd, it stirs：1. 120 parts of water is firstly added in blender and starts blender.2. uniformly add in 850 parts
Grouting agent, stirring add in water 30 parts remaining, then be stirred 2 minutes after 3-5 minutes.3. start the stirring motor of storage tank,
The valve of blender is opened, the slurry being stirred is discharged into storage tank.
3rd, mud jacking：1. the outlet of the inlet pipe of pneumatic mortar machine and slurry can is attached.2. starting pneumatic mortar machine, and exclude to press
Remaining air and moisture in pulp grinder.3. adjusting the rotating speed of pneumatic mortar machine, the rotating speed for controlling pneumatic mortar machine is 1100 rpms.It 4. will
The grout outlet of pneumatic mortar machine proceeds by mud jacking after being connect with the pipeline of required mud jacking.5. should be noted that during mud jacking slowly uniformly into
Row, should disposably carry out mud jacking and prevent that mud jacking is repeated.
4th, after mud jacking, the detection work of physical property is carried out to the part of carried out mud jacking.Physical property reaches finger
Terminate mud jacking after mark requirement and carry out later stage maintenance work.
And the detection of physical property carried out during the preparation use of grouting agent prepared for the present invention is as follows
Shown in row detection table：
Table one：Use environment temperature is 25 DEG C, when the additive amount of sodium thiosulfate is 0 part：
Table two：Use environment temperature is 15 DEG C, when the additive amount of sodium thiosulfate is 0.01 part：
Table three：Use environment temperature is 3 DEG C, when the additive amount of sodium thiosulfate is 0.05 part, adds moisture and stirs evenly
Do not occur the clean phenomenon of ice afterwards, the specific performance used is as shown in the table：
42.5 cement and 52.5 water that can be evident that from the correction data in table in normal silicate type cement
Mud performance practical during use has certain difference, and compared with 42.5 cement, the Slow setting time of 52.5 cement is shorter,
And the intensity of pressure-proof and snap-resistent is bigger, and in general the various performances of 52.5 cement are superior to 42.5 cement.At this
It has selected to adjust in the preparation of grouting agent and has prepared between component different components by weight percent come usability caused by adjusting different cement
Can difference, with significant effect, but for this grouting agent, be it is selectable in the case of should preferentially select
The Portland cement of 52.5 models.
And the use for being advantageously selected for widening this grouting agent whether added in of the variable component sodium thiosulfate in system
Temperature range show by practical experimental verification, this grouting agent is in the relatively low engineering of temperature using also making with good
Use performance.
Claims (4)
1. a kind of grouting agent, which is characterized in that the parts by weight of its component are：7-12 parts of silica flour, 2-4 parts of flyash, polycarboxylic acids 3-5
Part, 1-1.5 parts of magnesia, 0-0.05 parts of sodium thiosulfate, 0.3 part of sodium sulphate, 0.1-0.2 parts of beta-naphthalenesulfonic-acid formaldehyde condensation compound,
0.01 part of organosilicon, saponified 0.1 part of rosin, 0.2-0.3 parts of sodium carbonate and 550-650 parts of cement.
2. grouting agent according to claim 1, which is characterized in that the cement for 42.5 type Portland cements or
Any one in 52.5 type portland cements.
3. grouting agent according to claim 1, which is characterized in that the preparation method of the grouting agent, preparation method
For：
（A）The preparation of grouting agent head product
A, it is separately added into 7-12 parts of silica flours in pulvis reaction kettle, 2-4 parts of flyash, 3-5 parts of polycarboxylic acids, 1-1.5 parts of magnesia,
0.15-0.3 parts of sodium sulphate, 0.1-0.2 parts of beta-naphthalenesulfonic-acid formaldehyde condensation compounds, 0.01 part of organosilicon, 0.1 part of rosin it is saponified and
0.2-0.3 parts of sodium carbonate；
B, pulvis blender is opened, and it is 30 rpms to control the mixing speed of 10 minutes before blender；
C, when all pulvis stir evenly, the mixing speed of pulvis blender is adjusted, mixing speed is adjusted to 40 turns often
Minute, and continue stirring 20-40 minutes；
D, after all reaction raw materials are stirred evenly, the head product of grouting agent is obtained, the head product of grouting agent is moved into material storage kettle
In store for future use；
（B）The compounding of grouting agent
E, the head product of the grouting agent prepared is taken out spare；
F, the 42.5 type Portland cements for being equivalent to 30 times of head product weight are added in the head product of grouting agent, add in 0-
0-05 parts of sodium thiosulfate, add in sodium thiosulfate after mixing to obtain the final product.
4. grouting agent according to claim 3, which is characterized in that it is described according to step f, and according to constructing at that time
Specific environment temperature, when temperature is less than 5 DEG C, the sodium thiosulfate of 0.05 part of addition；When temperature adds when between 5 DEG C to 25 DEG C
Add 0.01 part of sodium thiosulfate；When temperature is higher than 25 DEG C, then addition sodium thiosulfate is not had to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082966.2A CN108164221A (en) | 2018-01-29 | 2018-01-29 | A kind of grouting agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082966.2A CN108164221A (en) | 2018-01-29 | 2018-01-29 | A kind of grouting agent and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108164221A true CN108164221A (en) | 2018-06-15 |
Family
ID=62515786
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|---|---|---|---|
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05140557A (en) * | 1991-11-14 | 1993-06-08 | Nippon Chem Ind Co Ltd | Grouting agent and grouting method |
| CN102249636A (en) * | 2011-05-18 | 2011-11-23 | 江苏名和集团有限公司 | Cement-based shrinkage-free grouting mortar |
| CN103172296A (en) * | 2011-12-21 | 2013-06-26 | 中冶建筑研究总院有限公司 | Post-tensioned pre-stressed concrete beam pipeline grouting agent |
| CN104291726A (en) * | 2013-07-19 | 2015-01-21 | 北京纽维逊建筑工程技术有限公司 | Ultralow-content post-tensioned pre-stressed pipeline grouting agent, and preparation method and application thereof |
| CN105236863A (en) * | 2015-09-16 | 2016-01-13 | 长安大学 | Expansive type high-fluidity cement-base pavement slip-casting reinforcing material and preparation method thereof |
-
2018
- 2018-01-29 CN CN201810082966.2A patent/CN108164221A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05140557A (en) * | 1991-11-14 | 1993-06-08 | Nippon Chem Ind Co Ltd | Grouting agent and grouting method |
| CN102249636A (en) * | 2011-05-18 | 2011-11-23 | 江苏名和集团有限公司 | Cement-based shrinkage-free grouting mortar |
| CN103172296A (en) * | 2011-12-21 | 2013-06-26 | 中冶建筑研究总院有限公司 | Post-tensioned pre-stressed concrete beam pipeline grouting agent |
| CN104291726A (en) * | 2013-07-19 | 2015-01-21 | 北京纽维逊建筑工程技术有限公司 | Ultralow-content post-tensioned pre-stressed pipeline grouting agent, and preparation method and application thereof |
| CN105236863A (en) * | 2015-09-16 | 2016-01-13 | 长安大学 | Expansive type high-fluidity cement-base pavement slip-casting reinforcing material and preparation method thereof |
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