CN106007470B - A kind of switching mode air entraining agent for wet shotcreting - Google Patents
A kind of switching mode air entraining agent for wet shotcreting Download PDFInfo
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- CN106007470B CN106007470B CN201610344954.3A CN201610344954A CN106007470B CN 106007470 B CN106007470 B CN 106007470B CN 201610344954 A CN201610344954 A CN 201610344954A CN 106007470 B CN106007470 B CN 106007470B
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- concrete
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- entraining agent
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/304—Air-entrainers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a kind of switching mode air entraining agent for wet shotcreting, it is made up of component A and B component, wherein, by mass fraction, component A is the mixture of 8 12 parts of 30 50 parts of soapberry soap powder, 5 15 parts of DTAC powder and polyacrylamide powder；B component is the mixture of 5 15 parts of 18 27 parts of X 2-1401 and lauryl sodium sulfate powder；Above-mentioned component A is added in concrete slurry in the ratio with the mass ratio of concrete for 0.05 0.1 ︰ 100 in whipping process；Above-mentioned B component is the vane opening position in the spray gun being connected with concrete ejection pipe, is carried and be injected in concrete slurry by compressed air in the ratio with the mass ratio of concrete for 0.015 0.03 ︰ 100.The present invention has good aid pumpability and sprayed coating concurrently, and its manufacturing cost is low with use cost, green, safe to use, has good market popularization value.
Description
Technical field
The present invention relates to a kind of concrete admixture, more particularly to a kind of switching mode air entraining agent for wet shotcreting.
Background technology
Wet shotcreting has higher pumpable performance index request to fresh concrete, thus, stirring shaping before or
During stirring shaping, additional air entraining agent is generally required, to improve its mobile performance index, obtains good aid pumpability
Energy.
However, the mobility of concrete is a pair of implacable lances with the slump after wet shotcreting injection molding
Shield：Higher mobility makes concrete have relatively low cohesive strength, is injected in by the easy slump of concrete on spray plane, to coagulation
The sprayed coating of soil affects.
How to assign simultaneously concrete flowability with can sprayed coating performance indications, have become the research and development side of air entraining agent
To being the technical staff in a concrete-spraying technology field important topic urgently to be resolved hurrily.
The content of the invention
Low, degradable, the construction is simple it is an object of the present invention to provide a kind of manufacturing cost, it can effectively reduce concrete spray
The switching mode air entraining agent for wet shotcreting of delivery pump power consumption during penetrating.
The present invention is to achieve the above object the technical scheme adopted is that a kind of switching mode bleed for wet shotcreting
Agent, it is characterised in that it is made up of component A and B component, wherein, component A foams for concrete, and B component disappears for concrete
Bubble；
The component A is the mixing of soapberry soap powder, DTAC powder and polyacrylamide powder
Thing, by mass fraction：Soapberry soap powder 30-50 parts, DTAC 5-15 parts, polyacrylamide powder 8-12
Part；
The B component is the mixture of X 2-1401 and lauryl sodium sulfate powder, by mass fraction：
X 2-1401 18-27 parts, lauryl sodium sulfate powder 5-15 parts；
Above-mentioned component A is added to mixed in the ratio with the mass ratio of concrete for 0.05-0.1 ︰ 100 in whipping process
In solidifying soil paste material；
Above-mentioned B component in the mass ratio of concrete be 0.015-0.03 ︰ 100 ratio, be with concrete ejection pipe
The vane opening position of the spray gun of connection, carried and be injected in concrete slurry by compressed air.
The technical effect directly brought by the technical proposal is that it is used as the A of barbotage in this " switching mode " air entraining agent
Component is added in concrete slurry in whipping process, and concrete slurry can be made to have bleed in conveyance conduit pumping procedure
Effect, greatly improved the mobility of concrete slurry, so as to obtain higher pumpable performance index, improve pumping efficiency,
Reduce pumping resistance, reduce (concrete pump) power consumption, and reduce the general of gunite concrete pipeline blockage accident generation
Rate, improve the security used；
Play vane opening position of the B component in the spray gun being connected with concrete ejection pipe of defoaming, taken by compressed air
Band is injected in concrete slurry.So, the air-flow for taking the B component for being wrapped with defoaming effect is injected into take in the form of " injection " and wrapped up in
In the concrete slurry for having the component A as barbotage, uniformly mixed under two strands of " jet " fast states, can effectively ensure that A
Component uniformly mixed with B component and formed it is effective, sufficiently contact, obtain preferably " defoaming " effect, so that it is guaranteed that spray
The cohesive strength performance indications that concrete slurry on by spray plane regains or " recovery " is good, obtain it is good can sprayed coating
Property, and then ensure concrete ejection Forming Quality, prevent wet shotcreting slump.
It is not difficult to find out, the switching mode air entraining agent of above-mentioned technical proposal, foaming ingredient " one in front and one in back " is mixed into antifoam composition
Concrete slurry, dexterously solve in wet shotcreting construction, " the lance between the aid pumpability and sprayability of concrete slurry
Shield ".
In above-mentioned technical proposal, each material composition of switching mode air entraining agent is nontoxic, degradable, is environmentally friendly
Green air entraining agent.To more fully understand the technical characterstic of switching mode air entraining agent of the present invention, it is briefly described as follows：
In each material composition of above-mentioned switching mode air entraining agent, soapberry soap powder comes from plant, is a kind of natural nuisance-free table
Face activating agent；
DTAC has excellent permeability and emulsibility.We prove by substantial amounts of experiment：
DTAC has good compatibility with soapberry soap powder, has excellent foaming energy after the two is compound
Power；
Polyacrylamide has good flocculability, can effectively reduce the frictional resistance between liquid, increase foam glues
Degree and elastic strength；
X 2-1401 is a kind of conventional high effective antifoaming agent, and its addition is small, but defoaming effect is notable；
Lauryl sodium sulfate is a kind of nontoxic anion surfactant, its biological degradability>90%.It is this it is cloudy from
Sub- surfactant and (being already present in concrete slurry) cationic surfactant DTAC
After mixing, turbidity and precipitation can be quickly formed.
That is, can be with coordinated after X 2-1401 mixes with lauryl sodium sulfate, on the one hand, strengthen
" defoaming " ability, on the other hand, it is further ensured that the reaction speed of " defoaming ".
Preferably, the pressure of above-mentioned compressed air is 0.2-0.5MPa.
What the optimal technical scheme was directly brought has the technical effect that, our practical experience shows, utilizes the wet shot of routine
Compressed air at concrete gun vane mends wind (pressure is usually 0.2-0.5MPa), you can preferably take and wrap up in B component " note
Penetrate " enter in the jet of concrete slurry, and realize good mixed effect.
That is, it is not necessary to be additionally carried out the feed of compressed air or the adjustment of pressure parameter, it is easy to technology controlling and process；
In other words, any extra negative effect will not be caused to wet shotcreting Forming Quality.
Further preferably, added when above-mentioned component A is the 3-5min before concrete stirring is completed.
What the optimal technical scheme was directly brought has the technical effect that,
So that component A both fully stirs, the effect of bleed can be given full play in concrete, increase is newly mixed mixed
The mobility of soil is coagulated, improves pumping；Meanwhile avoid long agitation from causing the rupture of introduced bubble, bubble can not be played
Ball lubrication.
In summary, the present invention has the advantages that relative to prior art：
1st, good aid pumpability and sprayed coating, safe to use are had concurrently；
2nd, green, manufacturing cost is cheap with use cost；
3rd, wet shotcreting good forming effect, Forming Quality are stable.
Embodiment
With reference to embodiment, the present invention is described in detail.
Embodiment 1
Above-mentioned component A is the mixing of soapberry soap powder, DTAC powder and polyacrylamide powder
Thing, by mass fraction：Soapberry soap powder 30-50 parts, DTAC 5-15 parts, polyacrylamide powder 8-12
Part；
Above-mentioned B component is the mixture of X 2-1401 and lauryl sodium sulfate powder, by mass fraction：
X 2-1401 18-27 parts, lauryl sodium sulfate powder 5-15 parts；
Above-mentioned component A is added to mixed in the ratio with the mass ratio of concrete for 0.05-0.1 ︰ 100 in whipping process
In solidifying soil paste material；
Above-mentioned B component in the mass ratio of concrete be 0.015-0.03 ︰ 100 ratio, be with concrete ejection pipe
The vane opening position of the spray gun of connection, carried and be injected in concrete slurry by compressed air.
The pressure of above-mentioned compressed air is 0.2-0.5MPa.
Above-mentioned component A adds when being the 3-5min before concrete stirring is completed.
Embodiment 1
Switching mode air entraining agent for wet shotcreting is made up of component A and B component, wherein, component A is sent out for concrete
Bubble, B component defoam for concrete；
The component A is the mixing of soapberry soap powder, DTAC powder and polyacrylamide powder
Thing, by mass fraction：30 parts of soapberry soap powder, 15 parts of DTAC, 12 parts of polyacrylamide powder；
The B component is the mixture of X 2-1401 and lauryl sodium sulfate powder, by mass fraction：
27 parts of X 2-1401,10 parts of lauryl sodium sulfate powder；
Above-mentioned component A is added to concrete in the ratio with the mass ratio of concrete for 0.05 ︰ 100 in whipping process
In slurry；
Above-mentioned B component in the ratio with the mass ratio of concrete for 0.015 ︰ 100, is connected with concrete ejection pipe
The vane opening position of spray gun, carried and be injected in concrete slurry by compressed air.
The pressure of compressed air is 0.2MPa.
Above-mentioned component A adds when being the 3min before concrete stirring is completed.
Embodiment 2
Switching mode air entraining agent for wet shotcreting is made up of component A and B component, wherein, component A is sent out for concrete
Bubble, B component defoam for concrete；
The component A is the mixing of soapberry soap powder, DTAC powder and polyacrylamide powder
Thing, by mass fraction：50 parts of soapberry soap powder, 5 parts of DTAC, 8 parts of polyacrylamide powder；
The B component is the mixture of X 2-1401 and lauryl sodium sulfate powder, by mass fraction：
18 parts of X 2-1401,15 parts of lauryl sodium sulfate powder；
Above-mentioned component A is added to concrete grout in the ratio with the mass ratio of concrete for 0.1 ︰ 100 in whipping process
In material；
Above-mentioned B component in the ratio with the mass ratio of concrete for 0.03 ︰ 100, is connected with concrete ejection pipe
The vane opening position of spray gun, carried and be injected in concrete slurry by compressed air.
The pressure of compressed air is 0.5MPa.
Above-mentioned component A adds when being the 5min before concrete stirring is completed.
Embodiment 3
Switching mode air entraining agent for wet shotcreting is made up of component A and B component, wherein, component A is sent out for concrete
Bubble, B component defoam for concrete；
The component A is the mixing of soapberry soap powder, DTAC powder and polyacrylamide powder
Thing, by mass fraction：40 parts of soapberry soap powder, 9 parts of DTAC, 11 parts of polyacrylamide powder；
The B component is the mixture of X 2-1401 and lauryl sodium sulfate powder, by mass fraction：
24 parts of X 2-1401,12 parts of lauryl sodium sulfate powder；
Above-mentioned component A is added to concrete in the ratio with the mass ratio of concrete for 0.08 ︰ 100 in whipping process
In slurry；
Above-mentioned B component in the ratio with the mass ratio of concrete for 0.02 ︰ 100, is connected with concrete ejection pipe
The vane opening position of spray gun, carried and be injected in concrete slurry by compressed air.
The pressure of compressed air is 0.35MPa.
Above-mentioned component A adds when being the 3-5min before concrete stirring is completed.
The performance detection of product：
The switching mode air entraining agent and Clariant air entraining agent, air entraining agent SA-20 for choosing embodiment 2 carry out concrete spraying contrast
Experiment.Contrast and experiment is as shown in table 1 below.
Explanation：
The concrete grade of above-mentioned contrast test is C25.
The raw material of the Concrete are：Portland cement R42.5, the river sand that modulus of fineness is 2.57, maximum
A diameter of 10mm lime stone, the ratio of mud 0.40.
Above-mentioned Clariant air entraining agent, air entraining agent SA-20 dosage are added according to commercially available prod specification dosage.(section
The volume of Lay grace air entraining agent is the 0.005-0.025% of gel rubber material quality, and SA-20 volume is 2-3 kilograms of additive per ton,
That is 0.2-0.3%).
Table 1：The switching mode air entraining agent of embodiment 2 and Clariant air entraining agent, air entraining agent SA-20 contrast and experiment
As can be seen from Table 1：The switching mode air entraining agent of the present invention is simultaneous compared with Clariant air entraining agent, air entraining agent SA-20
Have good aid pumpability and sprayed coating, safe to use, use cost is cheap, wet shotcreting good forming effect, shaping matter
Amount is stable.
Claims (3)
- A kind of 1. switching mode air entraining agent for wet shotcreting, it is characterised in that it is made up of component A and B component, wherein, A groups Divide and be used for concrete foaming, B component defoams for concrete；The component A is the mixture of soapberry soap powder, DTAC powder and polyacrylamide powder, is pressed Mass fraction：Soapberry soap powder 30-50 parts, DTAC 5-15 parts, polyacrylamide powder 8-12 parts；The B component is the mixture of X 2-1401 and lauryl sodium sulfate powder, by mass fraction：Ring-type Dimethyl silicone polymer 18-27 parts, lauryl sodium sulfate powder 5-15 parts；Above-mentioned component A is added to concrete in the ratio with the mass ratio of concrete for 0.05-0.1 ︰ 100 in whipping process In slurry；Above-mentioned B component in the ratio with the mass ratio of concrete for 0.015-0.03 ︰ 100, is connected with concrete ejection pipe Spray gun vane opening position, by compressed air carry be injected in concrete slurry.
- 2. the switching mode air entraining agent according to claim 1 for wet shotcreting, it is characterised in that the compressed air Pressure be 0.2-0.5MPa.
- 3. the switching mode air entraining agent according to claim 1 for wet shotcreting, it is characterised in that above-mentioned component A is Added when concrete stirs the 3-5min before completing.
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| CN201610344954.3A CN106007470B (en) | 2016-05-24 | 2016-05-24 | A kind of switching mode air entraining agent for wet shotcreting |
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| CN201610344954.3A CN106007470B (en) | 2016-05-24 | 2016-05-24 | A kind of switching mode air entraining agent for wet shotcreting |
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| CN106007470A CN106007470A (en) | 2016-10-12 |
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| CN108569858A (en) * | 2018-04-25 | 2018-09-25 | 临泉县凯晟建筑工程有限公司 | A kind of special air entraining agent of stable structure type cement |
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| CN102491687B (en) * | 2011-11-11 | 2013-07-24 | 中国铁道科学研究院金属及化学研究所 | Self-compaction concrete used for filling closed space as well as preparation method and application of same |
| BR112014014186B1 (en) * | 2011-12-12 | 2020-07-07 | Verifi Llc | method for monitoring and adjusting the slump and air content in a cement mix and mixing device |
| CN102584139B (en) * | 2012-01-18 | 2013-09-18 | 中国铁道科学研究院金属及化学研究所 | Self-densifying concrete as well as preparation method and application thereof |
| CN105217995B (en) * | 2015-11-06 | 2017-09-15 | 科之杰新材料集团有限公司 | A kind of Concrete synergist and preparation method thereof |
| CN105330211A (en) * | 2015-11-24 | 2016-02-17 | 扬州康龙环保工程有限公司 | High-strength self-compacting concrete |
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