CN104944834B - Concrete admixture and its preparation method and application - Google Patents
Concrete admixture and its preparation method and application Download PDFInfo
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- CN104944834B CN104944834B CN201510357271.7A CN201510357271A CN104944834B CN 104944834 B CN104944834 B CN 104944834B CN 201510357271 A CN201510357271 A CN 201510357271A CN 104944834 B CN104944834 B CN 104944834B
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Abstract
The invention provides a kind of concrete admixture and its preparation method and application, the concrete admixture that the present invention is provided is obtained by the lignosulfonates, foam stabilizer and the modifying agent hybrid reaction that are prepared by liquid glucose；Wherein, the modifying agent is one or more in NaOH, potassium hydroxide, magnesium hydroxide and calcium hydroxide, and it is 60 DEG C~150 DEG C to control the temperature reacted so that the additive effect for preparing is better than commercially available lignin additive water-reducing effect.
Description
Technical field
The present invention relates to a kind of concrete admixture and its preparation method and application.
Background technology
In cement mixture operation, to make rapid operation effectively, and the early stage demoulding shortens the duration, it is necessary to cement mixture
With high fluidity, effectively suppress the loss of slump, and there is sufficient early strength at the hardening initial stage, accordingly, it would be desirable to add mixed
Solidifying soil additive.
Current concrete admixture is with naphthalene system and polycarboxylic-acid product as main flow.The cement mixture workability of naphthalene system product
It is bad, have that water-reducing rate is not high, the big problem of loss of slump, although polycarboxylic-acid product superior performance, cost equivalent to
Naphthalene system product is bigger than normal；Additionally, lignosulfonates are modified concrete admixture can be also prepared, and due to sulfomethylated lignin
Hydrochlorate wide material sources, it is cheap, thus it is quite a few as the report of additive using lignin material, but modified wood
The water-reducing rate of mahogany sulfonate is not still high, it is impossible to meet as the application of concrete admixture.
The content of the invention
In view of this, the technical problems to be solved by the invention are to provide a kind of concrete admixture, not only low cost,
And water-reducing rate is high.
The invention provides a kind of concrete admixture, by the lignosulfonates that are prepared by liquid glucose, foam stabilizer and change
Property agent hybrid reaction is obtained；
The temperature of the hybrid reaction is 60 DEG C~150 DEG C；
The modifying agent is one or more in NaOH, potassium hydroxide, magnesium hydroxide and calcium hydroxide.
Preferably, the foam stabilizer is silicones polyethers emulsion.
Preferably, the pH value of the reaction system of the hybrid reaction is 9~11.
Preferably, the temperature of the hybrid reaction is 80 DEG C~100 DEG C.
Preferably, the hybrid reaction also includes modifying agent is water-soluble into the modifying agent that mass fraction is 1%~5%
Liquid.
Preferably, the lignosulfonates that prepared by the liquid glucose are 100 with the mass ratio of the foam stabilizer：(0.05~
0.3)。
Preferably, the process that the liquid glucose prepares lignosulfonates is：
Liquid glucose is obtained into lignosulfonates by chromatographic isolation；
The solid content of the liquid glucose is 35wt%~65wt%, and the pH of liquid glucose is 4~7, and reduced sugar is more than 16% in liquid glucose.
Preferably, the liquid glucose is prepared in accordance with the following methods：
By the material containing lignin and Compound-acid hybrid reaction, liquid glucose is obtained；
The Compound-acid includes sulfur dioxide, non-oxidizing acid and sulphite,
The non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
The sulphite is one or more in sodium sulfite, potassium sulfite, magnesium sulfite and calcium sulfite.
Present invention also offers a kind of concrete admixture composition, including：The present invention provide concrete admixture and
Naphthalene series additive.
Preferably, the mass ratio of the concrete admixture and the naphthalene series additive is (1~5):1.
Compared with prior art, the concrete admixture that the present invention is provided, by the lignosulfonates that are prepared by liquid glucose,
Foam stabilizer and modifying agent hybrid reaction are obtained；Wherein, the modifying agent is NaOH, potassium hydroxide, magnesium hydroxide and hydrogen-oxygen
Change calcium in one or more, and control reaction temperature be 60 DEG C~150 DEG C so that the additive effect for preparing compares city
The lignin additive water-reducing effect sold is good, test result indicate that, the water-reducing rate of additive of the present invention 8% with
On, and water-insoluble is less than 0.5wt%.
And the additive for preparing the present invention is compounded with naphthalene series additive, test result indicate that, its water-reducing rate is 14%
More than, water-insoluble is less than 0.5%.
Specific embodiment
The invention provides a kind of concrete admixture, by the lignosulfonates that are prepared by liquid glucose, foam stabilizer and change
Property agent hybrid reaction is obtained；
The temperature of the hybrid reaction is 60 DEG C~150 DEG C；
The modifying agent is one or more in NaOH, potassium hydroxide, magnesium hydroxide and calcium hydroxide.
According to the present invention, mixed by the lignosulfonates, foam stabilizer and the modifying agent hybrid reaction that are prepared by liquid glucose
Solidifying soil additive；
Wherein, the modifying agent is one or more in NaOH, potassium hydroxide, magnesium hydroxide and calcium hydroxide,
Preferably NaOH or calcium hydroxide；And in order that the additive effect that obtains more preferably, the present invention is preferably by modifying agent
Into the modifier aqueous solution that mass fraction is 1%~5%, the modifying agent water that mass fraction is 2%~3% is more preferably configured to
Solution；The foam stabilizer is preferably silicones polyethers emulsion；Lignosulfonates and the foam stabilizer prepared by the liquid glucose
Mass ratio is preferably 100：(0.05~0.3), more preferably 100：(0.1~0.2).
The pH value of the hybrid reaction is preferably 9~12, more preferably 10~11；The temperature of the reaction be 60 DEG C~
150 DEG C, more preferably 70 DEG C~130 DEG C, the most most preferably 80 DEG C~100 DEG C, preferably 85~95 DEG C；The reaction when
Between be preferably 1~12 hour, more preferably 2~6 hours, most preferably 3~4 hours.
Reaction solution after the present invention preferably also finishes hybrid reaction passes through spray drying, obtains concrete admixture, this
The method of the spray drying of invention is not particularly limited, spray drying process well known in the art, the spray drying
EAT is preferably 260 DEG C~280 DEG C, and leaving air temp is preferably 80 DEG C~100 DEG C.
The index of the concrete admixture that the present invention is obtained is：Moisture is less than 7, and pH value is 5.5~8.5, content of reducing sugar
(accounting for butt) is that, less than or equal to 8wt%, water-insoluble (accounting for butt) is that, less than or equal to 0.5%, sulfate is less than or equal to 6%.
The process that the liquid glucose prepares lignosulfonates is preferably：
Liquid glucose is obtained into lignosulfonates by chromatographic isolation；
The solid content of the liquid glucose is 35wt%~65wt%, and the pH of liquid glucose is 4~7, and reduced sugar is more than 16% in liquid glucose.
According to the present invention, the solid content of the liquid glucose is preferably wt40~50wt%；The used in chromatograph resin is preferred
It is one or more in sodium form resin, magnesium types resin, calcium type resin and potassium type resin；The temperature of the separation is preferably 30~
90 DEG C, more preferably 50~80 DEG C, the separating rate is preferably 1~10m/h, more preferably 2~6m/h；The eluant, eluent is excellent
Elect distilled water as.
In order to preferably leave the lignosulfonates in liquid glucose with xylose and other sugars, the present invention is preferably
Also liquid glucose is neutralized and filtered before chromatographic isolation, the reagent of the neutralization is preferably NaOH, magnesia, oxidation
One or more in calcium and potassium hydroxide, the temperature of the neutralization reaction is preferably 30~80 DEG C, more preferably 40~60 DEG C,
Most preferably 45~55 DEG C；The pH of solution to preferably 2~6 after the neutralization reaction, more preferably 3~5, most preferably 4~
5；The mode of the filtering is preferably precoating and drainage, more preferably plate-frame filtering or candle formula filtering；The precoating paint is preferably
One or more in diatomite, waste active carbon, perlite and xylose residue, the more preferably one kind in diatomite and waste active carbon
Or two kinds；The precoating amount is preferably 0~3kg/m2, more preferably 0.5~1.5kg/m2；The filter aid is diatomite, useless work
One or more in property charcoal and perlite, one or two more preferably in diatomite and waste active carbon；The filtering
Temperature is preferably 30~80 DEG C, most preferably more preferably 40~60 DEG C, 45~55 DEG C；The number of times of the filtering is preferably 1~4
It is secondary, more preferably 2~3 times.
The liquid glucose is preferably prepared in accordance with the following methods：
By the material containing lignin and Compound-acid hybrid reaction, liquid glucose is obtained；
The Compound-acid includes sulfur dioxide, non-oxidizing acid and sulphite,
The non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
The sulphite is one or more in sodium sulfite, potassium sulfite, magnesium sulfite and calcium sulfite.
Specifically, the present invention does not have particular/special requirement to the material containing lignin, be preferably selected from corncob, reed,
One or more in beans bar and cotton stalk；More preferably corncob or reed；Most preferably corncob.Raw material of the invention is preferred
By crushing, the present invention is not defined for the mesh number that the instrument of crushing or crushing are obtained, and those skilled in the art know
Acidolysis crush instrument and mesh number.
Heretofore described Compound-acid includes sulfur dioxide, non-oxidizing acid and sulphite, wherein, it is described non-oxidizable
Acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid；Preferably non-oxidizing acid is phosphoric acid, sulfuric acid, oxalic acid and acetic acid
In two or more；The sulphite is the one kind or several in sodium sulfite, potassium sulfite, magnesium sulfite and calcium sulfite
Kind；It is preferably two or more in sodium sulfite, potassium sulfite, magnesium sulfite and calcium sulfite；Two in the Compound-acid
Sulfur oxide, the mass ratio of non-oxidizing acid are preferably (10~95)：(2~50), more preferably (50~90)：(5~30), it is optimal
Elect as (80~90)：(6~20)；The sulfur dioxide is to be preferably (10~95) with the mol ratio of sulphite：(0~10),
More preferably (50~90)：(1~7), most preferably (80~90)：(2~3).
In the present invention, the material containing lignin mixes with Compound-acid carries out acidolysis reaction, obtains liquid glucose；Wherein,
The material containing lignin is preferably 1 with the mass ratio of Compound-acid：(0.01~0.1), more preferably 1：(0.03~
0.08), most preferably 1：(0.03~0.06)；In order that reaction is preferably carried out, the present invention addition water will also make in mixed liquor
The content (i.e. solid content) of the solid in reaction system be 2~100wt%, more preferably 4~90wt%, most preferably 5.5~
85wt%；The pressure of the reaction is preferably 0.2~1MPa, most preferably more preferably 0.4~0.8MPa, 0.5~0.7MPa.
Described solid content refers to reaction raw materials in reaction system and reaction solution (including reaction raw materials and molten in the present invention
Agent) mass ratio.
Present invention also offers a kind of concrete admixture composition, including：The present invention provide concrete admixture with
And one or more in naphthalene series additive, aliphatic additive and amino additive, the concrete admixture and the naphthalene
The mass ratio of series additive is preferably (1~5):(1~10), more preferably (2~4)：(1~5), more preferably (2.5~3)：
(2~4).
The concrete admixture that the present invention is provided, by the lignosulfonates, foam stabilizer and the modifying agent that are prepared by liquid glucose
Hybrid reaction is obtained；Wherein, the modifying agent be NaOH, potassium hydroxide, magnesium hydroxide and calcium hydroxide in one kind or
It is several, and it is 60 DEG C~150 DEG C to control the temperature reacted so that the additive for preparing has water-soluble and surface well
Activity, is applied to water reducer effect better than commercially available lignin additive water-reducing effect；
And the additive for preparing the present invention obtains composition with naphthalene series additive compounding, it is more additional than simple naphthalene system
The performance of agent is high, reaches the water-reducing rate of the efficient additive of accreditation in industry.
Technical scheme below in conjunction with the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
Embodiment 1
100g corncobs are crushed, and add 8g sulfurous acid, 1.4g phosphoric acid, 0.5g sodium sulfites to be hydrolyzed under 140 DEG C, 05Mpa,
After hydrolysis is finished, separation of solid and liquid obtains liquid glucose and xylose residue；Merge liquid glucose, xylose residue adds four times of 100 DEG C of washings, solid-liquid
After separation, liquid glucose and xylose residue are obtained；Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, xylose is obtained after separation of solid and liquid
Slag and liquid glucose.
The liquid glucose that will be obtained is condensed into the solution that solid content is 45wt%, then settles 48h at 50 DEG C, and hydrogen is added at 55 DEG C
Sodium oxide molybdena carries out neutralization reaction, obtains the solution that pH value is 5.
The pH that will be obtained is that 5 solution carries out plate-frame filtering 2 times, and the temperature of filtering is 50 DEG C, the precoating paint of plate-frame filtering
It is diatomite and waste active carbon, precoating amount is 1kg/m2, filter aid is diatomite, and addition is the 0.6% of liquid glucose quality, is obtained
Liquid glucose after filtering.
By the liquid glucose after filtering by chromatographic isolation, sodium lignin sulfonate is obtained, wherein, the temperature of chromatographic isolation is 70
DEG C, the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
The silicones of the sodium lignin sulfonate 20g, the sodium hydrate aqueous solution that mass fraction is 2% and 0.02g that will obtain
Polyethers emulsion reacts 2h in 85 DEG C, and the addition of NaOH is to make the pH most 9 of reaction system, is led to after completion of the reaction
Spray drying is crossed, the EAT of spray drying is 260 DEG C, and leaving air temp is 80 DEG C, obtains concrete admixture.
The concrete admixture that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is 0.25%
When, its water-reducing rate is 10%, and air content is 3.2%, 3d compressive strength rates 124%, 7d compressive strength rates 126%.By what is obtained
Concrete admixture 20g is compounded with 10g naphthalene water reducers, obtains concrete admixture composition；
The concrete admixture composition that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is
When 0.25%, its water-reducing rate is 17%, and air content is 2.5%, 3d compressive strength rates 135%, 7d compressive strength rates 136%.
Embodiment 2
100g corncobs are crushed, and addition 6.5g sulfurous acid, 1.5g oxalic acid, 0.55g sodium sulfites are under 160 DEG C, 0.5Mpa
Hydrolysis, after hydrolysis is finished, separation of solid and liquid obtains liquid glucose and xylose residue；Merge liquid glucose, xylose residue adds four times of 100 DEG C of washings,
After separation of solid and liquid, liquid glucose and xylose residue are obtained；Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtained after separation of solid and liquid
Xylose residue and liquid glucose.
The liquid glucose that will be obtained is condensed into the solution that solid content is 45wt%, then settles 48h at 50 DEG C, and hydrogen is added at 55 DEG C
Sodium oxide molybdena carries out neutralization reaction, obtains the solution that pH value is 5.
The pH that will be obtained is that 5 solution carries out plate-frame filtering 2 times, and the temperature of filtering is 50 DEG C, the precoating paint of plate-frame filtering
It is diatomite and waste active carbon, precoating amount is 1kg/m2, filter aid is diatomite, and addition is the 0.6% of liquid glucose quality, is obtained
Liquid glucose after filtering.
By the liquid glucose after filtering by chromatographic isolation, sodium lignin sulfonate is obtained, wherein, the temperature of chromatographic isolation is 70
DEG C, the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
The silicones of the sodium lignin sulfonate 20g, the sodium hydrate aqueous solution that mass fraction is 3% and 0.04g that will obtain
Polyethers emulsion reacts 3h in 95 DEG C, and the addition of NaOH is to make the pH most 10 of reaction system, after completion of the reaction
By spray drying, the EAT of spray drying is 270 DEG C, and leaving air temp is 90 DEG C, obtains concrete admixture.
The concrete admixture that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is 0.25%
When, its water-reducing rate is 11%, and air content is 3.0%, 3d compressive strength rates 125%, 7d compressive strength rates 124%.By what is obtained
Concrete admixture 20g is compounded with 6g naphthalene water reducers, obtains concrete admixture composition；
The concrete admixture composition that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is
When 0.25%, its water-reducing rate is 15%, and air content is 2.4%, 3d compressive strength rates 131%, 7d compressive strength rates 134%.
Embodiment 3
300g corncobs are crushed, and add 10g sulfurous acid, 5g sulfuric acid, 1.3g sodium sulfites to be hydrolyzed under 150 DEG C, 0.6Mpa,
After hydrolysis is finished, separation of solid and liquid obtains liquid glucose and xylose residue；Merge liquid glucose, xylose residue adds four times of 100 DEG C of washings, solid-liquid
After separation, liquid glucose and xylose residue are obtained；Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, xylose is obtained after separation of solid and liquid
Slag and liquid glucose.
The liquid glucose that will be obtained is condensed into the solution that solid content is 45wt%, and 48h, 55 DEG C of addition hydrogen-oxygens are then settled at 50 DEG C
Changing sodium carries out neutralization reaction, obtains the solution that pH value is 4.
The pH that will be obtained is that 5 solution carries out plate-frame filtering 2 times, and the temperature of filtering is 50 DEG C, the precoating paint of plate-frame filtering
It is diatomite and waste active carbon, precoating amount is 1kg/m2, filter aid is diatomite, and addition is the 0.6% of liquid glucose quality, is obtained
Liquid glucose after filtering.
By the liquid glucose after filtering by chromatographic isolation, sodium lignin sulfonate is obtained, wherein, the temperature of chromatographic isolation is 70
DEG C, the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
The silicones of the sodium lignin sulfonate 50g, the sodium hydrate aqueous solution that mass fraction is 2% and 0.1g that will obtain gathers
Ether emulsion reacts 3h in 95 DEG C, and the addition of NaOH is to make the pH most 10 of reaction system, is led to after completion of the reaction
Spray drying is crossed, the EAT of spray drying is 260 DEG C, and leaving air temp is 80 DEG C, obtains concrete admixture.
The concrete admixture that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is 0.25%
When, its water-reducing rate is 12%, and air content is 2.8%, 3d compressive strength rates 125%, 7d compressive strength rates 126%.By what is obtained
Concrete admixture 30g is compounded with 10g naphthalene water reducers, obtains concrete admixture composition；
The concrete admixture composition that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is
When 0.25%, its water-reducing rate is 16%, and air content is 2.3%, 3d compressive strength rates 136%, 7d compressive strength rates 137%.
Embodiment 4
300g corncobs are crushed, and add 10g sulfurous acid, 5g acetic acid, 1.3g sodium sulfites to be hydrolyzed under 150 DEG C, 0.6Mpa,
After hydrolysis is finished, separation of solid and liquid obtains liquid glucose and xylose residue；Merge liquid glucose, xylose residue adds four times of 100 DEG C of washings, solid-liquid
After separation, liquid glucose and xylose residue are obtained；Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, xylose is obtained after separation of solid and liquid
Slag and liquid glucose.
The liquid glucose that will be obtained is condensed into the solution that solid content is 45wt%, and 48h, 55 DEG C of addition hydrogen-oxygens are then settled at 50 DEG C
Changing sodium carries out neutralization reaction, obtains the solution that pH value is 5.
The pH that will be obtained is that 5 solution carries out plate-frame filtering 2 times, and the temperature of filtering is 50 DEG C, the precoating paint of plate-frame filtering
It is diatomite and waste active carbon, precoating amount is 1kg/m2, filter aid is diatomite, and addition is the 0.6% of liquid glucose quality, is obtained
Liquid glucose after filtering.
By the liquid glucose after filtering by chromatographic isolation, sodium lignin sulfonate is obtained, wherein, the temperature of chromatographic isolation is 70
DEG C, the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
The silicones of the sodium lignin sulfonate 50g, the sodium hydrate aqueous solution that mass fraction is 3% and 0.10g that will obtain
Polyethers emulsion reacts 2h in 85 DEG C, and the addition of NaOH is to make the pH most 9 of reaction system, is led to after completion of the reaction
Spray drying is crossed, the EAT of spray drying is 260 DEG C, and leaving air temp is 80 DEG C, obtains concrete admixture.
The concrete admixture that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is 0.25%
When, its water-reducing rate is 11%, and air content is 3.0%, 3d compressive strength rates 124%, 7d compressive strength rates 125%.By what is obtained
Concrete admixture 40g is compounded with 10g naphthalene water reducers, obtains concrete admixture composition；
The concrete admixture composition that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is
When 0.25%, its water-reducing rate is 15%, and air content is 2.5%, 3d compressive strength rates 133%, 7d compressive strength rates 135%.
Embodiment 5
300g corncobs are crushed, and add 10g sulfurous acid, 2g acetic acid, 3g sulfuric acid, 1.3g sodium sulfites in 150 DEG C, 0.6Mpa
Lower hydrolysis, after hydrolysis is finished, separation of solid and liquid obtains liquid glucose and sugar residue；Merge liquid glucose, sugar residue adds four times of 100 DEG C of washings, Gu
After liquid is separated, liquid glucose and sugar residue are obtained；Merge liquid glucose, sugar residue adds 100 DEG C of washings of twice, liquid glucose is obtained after separation of solid and liquid,
Merging obtains liquid glucose.
The liquid glucose that will be obtained is condensed into the solution that solid content is 45wt%, and 48h, 55 DEG C of addition hydrogen-oxygens are then settled at 50 DEG C
Changing sodium carries out neutralization reaction, obtains the solution that pH value is 5.
The pH that will be obtained is that 5 solution carries out plate-frame filtering 2 times, and the temperature of filtering is 50 DEG C, the precoating paint of plate-frame filtering
It is diatomite and waste active carbon, precoating amount is 1kg/m2, filter aid is diatomite, and addition is the 0.6% of liquid glucose quality, is obtained
Liquid glucose after filtering.
By the liquid glucose after filtering by chromatographic isolation, sodium lignin sulfonate is obtained, wherein, the temperature of chromatographic isolation is 70
DEG C, the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
The silicones of the sodium lignin sulfonate 50g, the sodium hydrate aqueous solution that mass fraction is 3% and 0.05g that will obtain
Polyethers emulsion reacts 2h in 85 DEG C, and the addition of NaOH is to make the pH most 9 of reaction system, is led to after completion of the reaction
Spray drying is crossed, the EAT of spray drying is 260 DEG C, and leaving air temp is 80 DEG C, obtains concrete admixture.
The concrete admixture that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is 0.25%
When, its water-reducing rate is 11%, and air content is 3.1%, 3d compressive strength rates 122%, 7d compressive strength rates 124%.By what is obtained
Concrete admixture 25g is compounded with 10g naphthalene water reducers, obtains concrete admixture composition；
The concrete admixture composition that will be obtained is measured according to GB 8076-2008, as a result shows, when volume is
When 0.25%, its water-reducing rate is 18%, and air content is 2.2%, 3d compressive strength rates 138%, 7d compressive strength rates 137%.
The explanation of above example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that right
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
Claims (7)
1. a kind of concrete admixture, is obtained by the lignosulfonates, foam stabilizer and the modifying agent hybrid reaction that are prepared by liquid glucose
Arrive；
The temperature of the hybrid reaction is 60 DEG C~150 DEG C；
The modifying agent is one or more in NaOH, potassium hydroxide, magnesium hydroxide and calcium hydroxide；
The foam stabilizer is silicones polyethers emulsion；
Lignosulfonates prepared by the liquid glucose are 100 with the mass ratio of the foam stabilizer：(0.05~0.3)；
The liquid glucose is prepared in accordance with the following methods：
By the material containing lignin and Compound-acid hybrid reaction, liquid glucose is obtained；
The Compound-acid includes sulfur dioxide, non-oxidizing acid and sulphite,
The non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
The sulphite is one or more in sodium sulfite, potassium sulfite, magnesium sulfite and calcium sulfite.
2. concrete admixture according to claim 1, it is characterised in that the pH value of the reaction system of the hybrid reaction
It is 9~11.
3. concrete admixture according to claim 1, it is characterised in that the temperature of the hybrid reaction is 80 DEG C~
100℃。
4. concrete admixture according to claim 1, it is characterised in that the hybrid reaction also includes matching somebody with somebody modifying agent
It is made the modifier aqueous solution that mass fraction is 1%~5%.
5. concrete admixture according to claim 1, it is characterised in that the liquid glucose prepares lignosulfonates
Process be：
Liquid glucose is obtained into lignosulfonates by chromatographic isolation；
The solid content of the liquid glucose is 35wt%~65wt%, and the pH of liquid glucose is 4~7, and reduced sugar is more than 16% in liquid glucose.
6. a kind of concrete admixture composition, including：Concrete admixture described in Claims 1 to 5 any one and
One or more in naphthalene series additive, aliphatic additive and amino additive.
7. concrete admixture composition according to claim 6, it is characterised in that the concrete admixture and described
The mass ratio of naphthalene series additive is (1~5):(1~10).
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| CN1778756A (en) * | 2005-10-13 | 2006-05-31 | 广西壮族自治区建筑材料科学研究设计院 | Preparation of composite high-efficient water reducer from begass |
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| CN104529228A (en) * | 2014-12-10 | 2015-04-22 | 青岛无为保温材料有限公司 | Modified cellulose ether applied to dry mixed sand for building |
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| EP1494990A4 (en) * | 2002-03-13 | 2010-05-26 | Grace W R & Co | Beneficiated water reducing compositions |
| CN103131802B (en) * | 2011-11-22 | 2014-08-13 | 济南圣泉集团股份有限公司 | Process for producing xylose by lignocellulose biomass |
| US9187865B2 (en) * | 2012-11-30 | 2015-11-17 | Api Intellectual Property Holdings, Llc | Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom |
| CN103588417A (en) * | 2013-11-01 | 2014-02-19 | 江苏百瑞吉新材料有限公司 | Modifier of sodium lignosulfonate concrete water reducing agent |
| CN104498640B (en) * | 2014-12-19 | 2018-02-06 | 成都连接流体分离科技有限公司 | A kind of technique using plant refuse as raw material coproduction xylose, microcrystalline cellulose and sodium lignin sulfonate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1778756A (en) * | 2005-10-13 | 2006-05-31 | 广西壮族自治区建筑材料科学研究设计院 | Preparation of composite high-efficient water reducer from begass |
| CN102140174A (en) * | 2011-03-08 | 2011-08-03 | 延边石岘白麓纸业股份有限公司 | Preparation method for lignosulfonate |
| CN104529228A (en) * | 2014-12-10 | 2015-04-22 | 青岛无为保温材料有限公司 | Modified cellulose ether applied to dry mixed sand for building |
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