CN108017319A - A kind of special economization agent of concrete mortar - Google Patents
A kind of special economization agent of concrete mortar Download PDFInfo
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- CN108017319A CN108017319A CN201711488283.9A CN201711488283A CN108017319A CN 108017319 A CN108017319 A CN 108017319A CN 201711488283 A CN201711488283 A CN 201711488283A CN 108017319 A CN108017319 A CN 108017319A
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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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/10—Acids or salts thereof containing carbon in the anion
- C04B22/106—Bicarbonates
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
- C04B24/121—Amines, polyamines
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a kind of special economization agent of concrete mortar, belongs to construction material auxiliary agent technical field.The special economization agent of concrete mortar that the present invention develops is by converted starch lotion, lightweight aggregate, N, N dimethyl cyclohexyl amines, calcium bicarbonate, water-reducing agent, defoamer and air entraining agent composition, wherein converted starch lotion is after being stirred by octenyl succinic denaturated starch by acid and water, add fluid, continue to be stirred, and high speed dispersion, obtained again after high-pressure homogeneous, during configuration, first by converted starch lotion, lightweight aggregate, N, after N dimethyl cyclohexyl amines and calcium bicarbonate are stirred, add water-reducing agent, defoamer and air entraining agent, continue to be stirred, discharging, it is filling, up to the special economization agent of concrete mortar.Gained economization agent for concrete of the invention has excellent decrement performance.
Description
Technical field
The invention discloses a kind of special economization agent of concrete mortar, belongs to construction material auxiliary agent technical field.
Background technology
Foam concrete is produced per year because enjoying favor with multiple functions such as lightweight, insulation, fire prevention, antidetonation, sound insulations
Measure close to 1.7 × 107m3.But the factors such as high porosity, high cementitious material content and aggregate shortage, cause foam concrete dry
Dehydration is fast in dry environment, and drying shrinkage is big, and high cementitious material content causes larger chemical shrinkage, promotes foam concrete to show
Go out larger self-constriction.Significant drying shrinkage and self-constriction macroscopically show larger volume and become in the case where lacking the limitation of aggregate
Shape.It is easy to crack when deformation suffers restraints.Cracking can make the performance degradations such as its thermal technology, mechanics, influence subsequently to use.
At present, control foam concrete shrink means mainly have adding of fiber, admixture expansion component, reduce water-cement ratio,
Add mineral admixture etc..But adding of fiber and expansion component are the contraction for limiting or compensating Behavior of Hardened Cement Paste, reduce water-cement ratio
It is also difficult to avoid that moisture dissipates with addition mineral admixture, it is also difficult to which effectively control is shunk.Economization agent is by reducing Behavior of Hardened Cement Paste hole
Solution surface tension, reduces pore dehydration stress, reduces air shrinkage value and self-shrinking value, and SRA makes Behavior of Hardened Cement Paste have in early days
Certain swelliong power, is conducive to improve self-constriction.At present, applications of the SRA in foam concrete, is also rarely reported, still,
At present traditional concrete also there are shrinkage it is bad the problem of, therefore also need to study it, it is intended to which probing into one kind has
Effect improves the method that foam concrete is shunk, and help is provided for the practical engineering application of concrete.
The content of the invention
The present invention solves the technical problem of：For traditional concrete reducing performance it is bad the problem of, there is provided
A kind of special economization agent of concrete mortar.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of special economization agent of concrete mortar, is made of the raw material of following parts by weight：
80~100 parts of converted starch lotion
10~20 parts of lightweight aggregate
4~6 parts of N, N- dimethyl cyclohexyl amine
3~5 parts of calcium bicarbonate
1~3 part of water-reducing agent
1~3 part of defoamer
1~3 part of air entraining agent
The special economization agent configuration process of concrete mortar is：
（1）Formed by raw material and weigh each component；
（2）It is 1 in mass ratio by octenyl succinic denaturated starch by acid and water：40~1：50 are stirred, and add water quality 0.1
~0.2 times of fluid, after being stirred, high speed dispersion, then through high-pressure homogeneous, obtain converted starch lotion；
（3）By converted starch lotion, lightweight aggregate, N, after N- dimethyl cyclohexyl amines and calcium bicarbonate are stirred, diminishing is added
Agent, defoamer and air entraining agent, continue to be stirred, discharging, filling, up to the special economization agent of concrete mortar.
The lightweight aggregate is in chitosan, polyvinyl alcohol, Gluten, casein, agar, carragheen, peach gum or sodium alginate
Any one.
The water-reducing agent is lignosulfonates, polycarboxylate water-reducer, naphthalene sulfonate water-reducing agent, the efficient diminishing of fatty acid series
Any one in agent or Amino-sulfonic Acid-based Water-reducer.
The defoamer for silicone emulsion, the fatty acid ester compounded thing of higher alcohols, polyoxyethylene polyoxypropylene pentaerythrite ether,
In polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether, polyoxyethylene polyoxypropylene glycerin ether or dimethyl silicone polymer
Any one.
The air entraining agent is any one in sodium alkyl benzene sulfonate, aliphatic alcohol sodium sulfate or rosin glycerides.
The fluid is any one in atoleine, castor oil, linseed oil, sunflower oil or soybean oil.
The beneficial effects of the invention are as follows：
（1）Technical solution of the present invention by adding converted starch lotion, by products application in concrete system after, mixed in cement
In solidifying soil whipping process, emulsion particle can be evenly distributed in cement mortar, and with the progress of hydrated cementitious, is constantly deposited on water
The surface of mud gelinite, with the progress of hydrated cementitious, moisture is constantly reduced, and emulsion particle is gradually limited in concrete capillary
Kong Zhong, and flocculate together, sealant is formed on the surface of cement gel, which has also cohered the surface of aggregate and non-water
Change the surface of cement granules, finally, the moisture between emulsion particle is gradually absorbed in the chemical bonding water of aquation generation again, is made
Emulsion particle is merged completely, forms continuous Structure Network, on the one hand, hydrolysis product of cement links together, improves
Concrete product mechanical property, on the other hand, can be used as support and connection structure, effectively avoid concrete in whole hydration process
In contraction, furthermore, converted starch also has good water-absorbing-retaining performance, can cooperate with lightweight aggregate effective compensation cement water together
Contraction caused by the consumption of moisture during change, furthermore, converted starch has good emulsification and surface-active, can effectively drop
The surface tension of liquid of low concrete system, and then reduce the contraction of cement-base concrete；
（2）Technical solution of the present invention is by adding N, N- dimethyl cyclohexyl amines and calcium bicarbonate, in use, calcium bicarbonate
Occur slowly to decompose under hydrated cementitious exothermic conditions, and produce carbon dioxide and calcium carbonate, before carbon dioxide does not produce,
The N protonated on a small quantity, N- dimethyl cyclohexyl amine are can be inserted into due to electrostatic interaction between the hydrophilic head base of converted starch molecule, are produced
Stronger synergistic effect, plays good emulsification, carbon dioxide generation after, most of N, N- dimethyl cyclohexyl amines with
Carbon dioxide reaction and protonate, be transferred to from oil phase in water phase, make aqueous ion intensity increase severely so that emulsion particle is because of band
There are identical charges and mutually exclusive, and be well dispersed in concrete system, concrete is subtracted so as to further improve product
Contracting effect.
Embodiment
It is 1 in mass ratio：10~1：12 pour into cornstarch and water mixing in beaker, and beaker is transferred to digital display and is tested the speed
Constant temperature blender with magnetic force, is 55~65 DEG C in temperature, and under the conditions of rotating speed is 800~1200r/min, constant temperature is stirred 2~4h,
Obtain farinaceous size；It is 1 in mass ratio by octenyl succinic acid anhydride and absolute ethyl alcohol：8~1：10 are stirred, and obtain acid anhydrides dilution
Liquid；It is 1 in mass ratio：20~1：25 weigh farinaceous size and acid anhydrides dilution, first pour into farinaceous size in reaction kettle, then will
Acid anhydrides dilution is added dropwise in reaction kettle by dropping funel, and it is 8~10mL/min to control acid anhydrides dilution drop rate, treats acid
Acid anhydride dilution is added dropwise, and pH to 8.6~9.0 in reaction kettle is adjusted with triethanolamine, after continuing 3~5h of constant temperature stirring reaction,
PH in reaction kettle is adjusted with hydrochloric acid and is transferred to Rotary Evaporators to neutrality, then by material in reaction kettle, is 75~80 DEG C in temperature, is pressed
Under the conditions of power is 600~800kPa, 3~5h of concentrated by rotary evaporation, discharging, obtains concentrate, and gained concentrate is transferred in baking oven, in
Temperature is dried to constant weight under the conditions of being 105~110 DEG C, obtains dried feed, then gained dried feed is crushed, and crosses 200~300 mesh sieves,
Obtain octenyl succinic denaturated starch by acid；It is 1 in mass ratio by gained octenyl succinic denaturated starch by acid and water：40~1：50 pour into
In batch mixer, after being stirred 45~60min with 600~800r/min rotating speeds, then into batch mixer add water quality 0.1~
0.2 times of fluid, continues to be stirred 20~30min with 600~800r/min rotating speeds, obtains mixed liquor, then by gained mixed liquor
With high speed disperser, using rotating speed as 18000~20000r/min under the conditions of, 30~45min of high speed dispersion, obtains dispersion liquid, then will
Gained dispersion liquid is transferred in high pressure homogenizer, and through high-pressure homogeneous, discharging, obtains converted starch lotion；Count, take successively in parts by weight
80~100 parts of converted starch lotions, 10~20 parts of lightweight aggregates, 4~6 parts of N, N- dimethyl cyclohexyl amines, 3~5 parts of calcium bicarbonates, 1
~3 parts of water-reducing agents, 1~3 part of defoamer, 1~3 part of air entraining agent, first by converted starch lotion, lightweight aggregate, N, N- dimethyleyelohexanes
Amine and calcium bicarbonate are stirred 1~3h with 400~600r/min rotating speeds with blender, add diminishing under room temperature
Agent, defoamer and air entraining agent, continue to be stirred 1~3h, discharging, filling, up to the special economization agent of concrete mortar.It is described light
Aggregate is any one in chitosan, polyvinyl alcohol, Gluten, casein, agar, carragheen, peach gum or sodium alginate.It is described
Water-reducing agent is lignosulfonates, polycarboxylate water-reducer, naphthalene sulfonate water-reducing agent, fatty acid series high efficiency water reducing agent or sulfamic acid
Any one in salt series high-efficiency water-reducing agent.The defoamer is silicone emulsion, the fatty acid ester compounded thing of higher alcohols, polyoxyethylene
Polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether, polyoxyethylene polyoxypropylene glycerin ether
Or any one in dimethyl silicone polymer.The air entraining agent is sodium alkyl benzene sulfonate, aliphatic alcohol sodium sulfate or rosin glycerine
Any one in ester.The fluid is any one in atoleine, castor oil, linseed oil, sunflower oil or soybean oil
Kind.
Example 1
It is 1 in mass ratio：Cornstarch and water are mixed and poured into beaker by 12, and beaker is transferred to the digital display constant temperature magnetic force that tests the speed and is stirred
Device is mixed, is 65 DEG C in temperature, under the conditions of rotating speed is 1200r/min, constant temperature is stirred 4h, obtains farinaceous size；By octenyl amber
Amber acid anhydrides and absolute ethyl alcohol are 1 in mass ratio：10 are stirred, and obtain acid anhydrides dilution；It is 1 in mass ratio：25 weigh starch slurry
Liquid and acid anhydrides dilution, first pour into farinaceous size in reaction kettle, then acid anhydrides dilution is added dropwise to reaction by dropping funel
In kettle, it is 10mL/min to control acid anhydrides dilution drop rate, treats that acid anhydrides dilution is added dropwise, and is adjusted and reacted with triethanolamine
PH to 9.0 in kettle, after continuing constant temperature stirring reaction 5h, pH is adjusted in reaction kettle to neutrality with hydrochloric acid, then by material in reaction kettle
Rotary Evaporators are transferred to, are 80 DEG C in temperature, under the conditions of pressure is 800kPa, concentrated by rotary evaporation 5h, discharging, obtains concentrate, and will
Gained concentrate is transferred in baking oven, is dried under the conditions of being 110 DEG C in temperature to constant weight, is obtained dried feed, then gained is dried feed powder
It is broken, 300 mesh sieves are crossed, obtain octenyl succinic denaturated starch by acid；It is in mass ratio by gained octenyl succinic denaturated starch by acid and water
1：50 pour into batch mixer, after being stirred 60min with 800r/min rotating speeds, then 0.2 times of water quality are added into batch mixer
Fluid, continues to be stirred 30min with 800r/min rotating speeds, obtains mixed liquor, then by gained mixed liquor high speed disperser, to turn
Under the conditions of speed is 20000r/min, high speed dispersion 45min, obtains dispersion liquid, then gained dispersion liquid is transferred in high pressure homogenizer, warp
High-pressure homogeneous, discharging, obtains converted starch lotion；Count in parts by weight, take 100 parts of converted starch lotions successively, 20 parts of lightweight aggregates,
6 parts of N, N- dimethyl cyclohexyl amines, 5 parts of calcium bicarbonates, 3 parts of water-reducing agents, 3 parts of defoamers, 3 parts of air entraining agents, first by converted starch breast
Liquid, lightweight aggregate, N, N- dimethyl cyclohexyl amines and calcium bicarbonate are stirred with 600r/min rotating speeds with blender and mixed under room temperature
3h is closed, water-reducing agent, defoamer and air entraining agent is added, continues to be stirred 3h, is discharged, it is filling, it is special up to concrete mortar
Economization agent.The lightweight aggregate is chitosan.The water-reducing agent is lignosulfonates.The defoamer is silicone emulsion.It is described
Air entraining agent is sodium alkyl benzene sulfonate.The fluid is atoleine.
Example 2
Count in parts by weight, take 20 parts of lightweight aggregates successively, 6 parts of N, N- dimethyl cyclohexyl amines, 5 parts of calcium bicarbonates, 3 parts of water-reducing agents, 3
Part defoamer, 3 parts of air entraining agents, first use blender by lightweight aggregate, N, N- dimethyl cyclohexyl amines and calcium bicarbonate under room temperature
3h is stirred with 600r/min rotating speeds, adds water-reducing agent, defoamer and air entraining agent, continues to be stirred 3h, is discharged, is filled
Dress, up to the special economization agent of concrete mortar.The lightweight aggregate is chitosan.The water-reducing agent is lignosulfonates.It is described
Defoamer is silicone emulsion.The air entraining agent is sodium alkyl benzene sulfonate.The fluid is atoleine.
Example 3
It is 1 in mass ratio by cornstarch and water：50 pour into batch mixer, after being stirred 60min with 800r/min rotating speeds, then
The fluid of 0.2 times of water quality is added into batch mixer, continues to be stirred 30min with 800r/min rotating speeds, obtains mixed liquor, then will
Gained mixed liquor high speed disperser, using rotating speed as 20000r/min under the conditions of, high speed dispersion 45min obtains dispersion liquid, then by institute
Obtain dispersion liquid to be transferred in high pressure homogenizer, through high-pressure homogeneous, discharging, obtains converted starch lotion；Count, take successively in parts by weight
100 parts of converted starch lotions, 20 parts of lightweight aggregates, 6 parts of N, N- dimethyl cyclohexyl amines, 5 parts of calcium bicarbonates, 3 parts of water-reducing agents, 3 parts disappear
Infusion, 3 parts of air entraining agents, first by converted starch lotion, lightweight aggregate, N, N- dimethyl cyclohexyl amines and calcium bicarbonate are in room temperature condition
Under, 3h is stirred with 600r/min rotating speeds with blender, water-reducing agent, defoamer and air entraining agent is added, continues to be stirred
3h, discharging is filling, up to the special economization agent of concrete mortar.The lightweight aggregate is chitosan.The water-reducing agent is sulfomethylated lignin
Hydrochlorate.The defoamer is silicone emulsion.The air entraining agent is sodium alkyl benzene sulfonate.The fluid is atoleine.
Example 4
It is 1 in mass ratio：Cornstarch and water are mixed and poured into beaker by 12, and beaker is transferred to the digital display constant temperature magnetic force that tests the speed and is stirred
Device is mixed, is 65 DEG C in temperature, under the conditions of rotating speed is 1200r/min, constant temperature is stirred 4h, obtains farinaceous size；By octenyl amber
Amber acid anhydrides and absolute ethyl alcohol are 1 in mass ratio：10 are stirred, and obtain acid anhydrides dilution；It is 1 in mass ratio：25 weigh starch slurry
Liquid and acid anhydrides dilution, first pour into farinaceous size in reaction kettle, then acid anhydrides dilution is added dropwise to reaction by dropping funel
In kettle, it is 10mL/min to control acid anhydrides dilution drop rate, treats that acid anhydrides dilution is added dropwise, and is adjusted and reacted with triethanolamine
PH to 9.0 in kettle, after continuing constant temperature stirring reaction 5h, pH is adjusted in reaction kettle to neutrality with hydrochloric acid, then by material in reaction kettle
Rotary Evaporators are transferred to, are 80 DEG C in temperature, under the conditions of pressure is 800kPa, concentrated by rotary evaporation 5h, discharging, obtains concentrate, and will
Gained concentrate is transferred in baking oven, is dried under the conditions of being 110 DEG C in temperature to constant weight, is obtained dried feed, then gained is dried feed powder
It is broken, 300 mesh sieves are crossed, obtain octenyl succinic denaturated starch by acid；It is in mass ratio by gained octenyl succinic denaturated starch by acid and water
1：50 pour into batch mixer, after being stirred 60min with 800r/min rotating speeds, then 0.2 times of water quality are added into batch mixer
Fluid, continues to be stirred 30min with 800r/min rotating speeds, obtains mixed liquor, then by gained mixed liquor high speed disperser, to turn
Under the conditions of speed is 20000r/min, high speed dispersion 45min, obtains dispersion liquid, then gained dispersion liquid is transferred in high pressure homogenizer, warp
High-pressure homogeneous, discharging, obtains converted starch lotion；Count in parts by weight, take 100 parts of converted starch lotions successively, 20 parts of lightweight aggregates,
5 parts of calcium bicarbonates, 3 parts of water-reducing agents, 3 parts of defoamers, 3 parts of air entraining agents, first by converted starch lotion, lightweight aggregate and calcium bicarbonate in
Under room temperature, 3h is stirred with 600r/min rotating speeds with blender, adds water-reducing agent, defoamer and air entraining agent, continued
3h is stirred, is discharged, it is filling, up to the special economization agent of concrete mortar.The lightweight aggregate is chitosan.The water-reducing agent is
Lignosulfonates.The defoamer is silicone emulsion.The air entraining agent is sodium alkyl benzene sulfonate.The fluid is liquid stone
Wax.
Example 5
It is 1 in mass ratio：Cornstarch and water are mixed and poured into beaker by 12, and beaker is transferred to the digital display constant temperature magnetic force that tests the speed and is stirred
Device is mixed, is 65 DEG C in temperature, under the conditions of rotating speed is 1200r/min, constant temperature is stirred 4h, obtains farinaceous size；By octenyl amber
Amber acid anhydrides and absolute ethyl alcohol are 1 in mass ratio：10 are stirred, and obtain acid anhydrides dilution；It is 1 in mass ratio：25 weigh starch slurry
Liquid and acid anhydrides dilution, first pour into farinaceous size in reaction kettle, then acid anhydrides dilution is added dropwise to reaction by dropping funel
In kettle, it is 10mL/min to control acid anhydrides dilution drop rate, treats that acid anhydrides dilution is added dropwise, and is adjusted and reacted with triethanolamine
PH to 9.0 in kettle, after continuing constant temperature stirring reaction 5h, pH is adjusted in reaction kettle to neutrality with hydrochloric acid, then by material in reaction kettle
Rotary Evaporators are transferred to, are 80 DEG C in temperature, under the conditions of pressure is 800kPa, concentrated by rotary evaporation 5h, discharging, obtains concentrate, and will
Gained concentrate is transferred in baking oven, is dried under the conditions of being 110 DEG C in temperature to constant weight, is obtained dried feed, then gained is dried feed powder
It is broken, 300 mesh sieves are crossed, obtain octenyl succinic denaturated starch by acid；It is in mass ratio by gained octenyl succinic denaturated starch by acid and water
1：50 pour into batch mixer, after being stirred 60min with 800r/min rotating speeds, then 0.2 times of water quality are added into batch mixer
Fluid, continues to be stirred 30min with 800r/min rotating speeds, obtains mixed liquor, then by gained mixed liquor high speed disperser, to turn
Under the conditions of speed is 20000r/min, high speed dispersion 45min, obtains dispersion liquid, then gained dispersion liquid is transferred in high pressure homogenizer, warp
High-pressure homogeneous, discharging, obtains converted starch lotion；Count in parts by weight, take 100 parts of converted starch lotions successively, 20 parts of lightweight aggregates,
6 parts of N, N- dimethyl cyclohexyl amines, 3 parts of water-reducing agents, 3 parts of defoamers, 3 parts of air entraining agents, first by converted starch lotion, lightweight aggregate, N,
N- dimethyl cyclohexyl amines are stirred 3h with blender under room temperature with 600r/min rotating speeds, add water-reducing agent, defoaming
Agent and air entraining agent, continue to be stirred 3h, discharging, filling, up to the special economization agent of concrete mortar.The lightweight aggregate gathers for shell
Sugar.The water-reducing agent is lignosulfonates.The defoamer is silicone emulsion.The air entraining agent is sodium alkyl benzene sulfonate.Institute
It is atoleine to state fluid.
Example 6
It is 1 in mass ratio：Cornstarch and water are mixed and poured into beaker by 12, and beaker is transferred to the digital display constant temperature magnetic force that tests the speed and is stirred
Device is mixed, is 65 DEG C in temperature, under the conditions of rotating speed is 1200r/min, constant temperature is stirred 4h, obtains farinaceous size；By octenyl amber
Amber acid anhydrides and absolute ethyl alcohol are 1 in mass ratio：10 are stirred, and obtain acid anhydrides dilution；It is 1 in mass ratio：25 weigh starch slurry
Liquid and acid anhydrides dilution, first pour into farinaceous size in reaction kettle, then acid anhydrides dilution is added dropwise to reaction by dropping funel
In kettle, it is 10mL/min to control acid anhydrides dilution drop rate, treats that acid anhydrides dilution is added dropwise, and is adjusted and reacted with triethanolamine
PH to 9.0 in kettle, after continuing constant temperature stirring reaction 5h, pH is adjusted in reaction kettle to neutrality with hydrochloric acid, then by material in reaction kettle
Rotary Evaporators are transferred to, are 80 DEG C in temperature, under the conditions of pressure is 800kPa, concentrated by rotary evaporation 5h, discharging, obtains concentrate, and will
Gained concentrate is transferred in baking oven, is dried under the conditions of being 110 DEG C in temperature to constant weight, is obtained dried feed, then gained is dried feed powder
It is broken, 300 mesh sieves are crossed, obtain octenyl succinic denaturated starch by acid；It is in mass ratio by gained octenyl succinic denaturated starch by acid and water
1：50 pour into batch mixer, after being stirred 60min with 800r/min rotating speeds, then 0.2 times of water quality are added into batch mixer
Fluid, continues to be stirred 30min with 800r/min rotating speeds, obtains mixed liquor, then by gained mixed liquor high speed disperser, to turn
Under the conditions of speed is 20000r/min, high speed dispersion 45min, obtains dispersion liquid, then gained dispersion liquid is transferred in high pressure homogenizer, warp
High-pressure homogeneous, discharging, obtains converted starch lotion；Count in parts by weight, take 100 parts of converted starch lotions, 6 parts of N, N- diformazans successively
Basic ring hexylamine, 5 parts of calcium bicarbonates, 3 parts of water-reducing agents, 3 parts of defoamers, 3 parts of air entraining agents, first by converted starch lotion, N, N- diformazans
Basic ring hexylamine and calcium bicarbonate are stirred 3h with blender under room temperature with 600r/min rotating speeds, add water-reducing agent,
Defoamer and air entraining agent, continue to be stirred 3h, discharging, filling, up to the special economization agent of concrete mortar.The water-reducing agent is
Lignosulfonates.The defoamer is silicone emulsion.The air entraining agent is sodium alkyl benzene sulfonate.The fluid is liquid stone
Wax.
Comparative example：The economization agent for concrete of Beijing Science and Technology Ltd. production.
The gained of example 1 to 6 economization agent and comparative example product are subjected to performance detection, specific detection method is as follows：
Drying shrinkage：Compact dimensions are the test block of 25mm × 25mm × 280mm, after the 24h demouldings, are placed in 20 DEG C of temperature, relative humidity 60%
Environment, with reference to JC/T603 measure 1,2,3,4,5,6,7,14,21 and 28d air shrinkage values.Specific testing result is as shown in table 1：
Table 1
| Detection content | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Comparative example |
| Air shrinkage value reduction rate/% | 42.4 | 45.8 | 47.8 | 55.1 | 49.3 | 48.8 | 59.5 |
From 1 testing result of table, present invention gained economization agent for concrete has excellent decrement performance.
Claims (6)
- A kind of 1. special economization agent of concrete mortar, it is characterised in that：It is made of the raw material of following parts by weight：80~100 parts of converted starch lotion10~20 parts of lightweight aggregate4~6 parts of N, N- dimethyl cyclohexyl amine3~5 parts of calcium bicarbonate1~3 part of water-reducing agent1~3 part of defoamer1~3 part of air entraining agentThe special economization agent configuration process of concrete mortar is：（1）Formed by raw material and weigh each component；（2）It is 1 in mass ratio by octenyl succinic denaturated starch by acid and water：40~1：50 are stirred, and add water quality 0.1 ~0.2 times of fluid, after being stirred, high speed dispersion, then through high-pressure homogeneous, obtain converted starch lotion；（3）By converted starch lotion, lightweight aggregate, N, after N- dimethyl cyclohexyl amines and calcium bicarbonate are stirred, diminishing is added Agent, defoamer and air entraining agent, continue to be stirred, discharging, filling, up to the special economization agent of concrete mortar.
- A kind of 2. special economization agent of concrete mortar according to claim 1, it is characterised in that：The lightweight aggregate gathers for shell Any one in sugar, polyvinyl alcohol, Gluten, casein, agar, carragheen, peach gum or sodium alginate.
- A kind of 3. special economization agent of concrete mortar according to claim 1, it is characterised in that：The water-reducing agent is wooden Plain sulfonate, polycarboxylate water-reducer, naphthalene sulfonate water-reducing agent, the efficient diminishing of fatty acid series high efficiency water reducing agent or sulfamate system Any one in agent.
- A kind of 4. special economization agent of concrete mortar according to claim 1, it is characterised in that：The defoamer is emulsification It is the fatty acid ester compounded thing of silicone oil, higher alcohols, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, poly- Any one in oxypropylene glycerin ether, polyoxyethylene polyoxypropylene glycerin ether or dimethyl silicone polymer.
- A kind of 5. special economization agent of concrete mortar according to claim 1, it is characterised in that：The air entraining agent is alkyl Any one in benzene sulfonic acid sodium salt, aliphatic alcohol sodium sulfate or rosin glycerides.
- A kind of 6. special economization agent of concrete mortar according to claim 1, it is characterised in that：The fluid is liquid stone Any one in wax, castor oil, linseed oil, sunflower oil or soybean oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488283.9A CN108017319A (en) | 2017-12-30 | 2017-12-30 | A kind of special economization agent of concrete mortar |
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| CN111592284A (en) * | 2020-04-24 | 2020-08-28 | 黄振兴 | High-viscosity aerated thin-layer masonry mortar and preparation method thereof |
| WO2021175004A1 (en) * | 2020-05-30 | 2021-09-10 | 科洛结构自防水技术(深圳)有限公司 | Concrete admixture anti-seepage and anti-cracking shrinkage-reducing agent and preparation method thereof |
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| CN111592284B (en) * | 2020-04-24 | 2022-02-15 | 黄振兴 | High-viscosity aerated thin-layer masonry mortar and preparation method thereof |
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