CN104944834A - Concrete admixture and preparation method and application thereof - Google Patents
Concrete admixture and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides a concrete admixture and a preparation method and application thereof. The concrete admixture is obtained through hybrid reaction of lignosulfonate prepared by sugar solution, a foam stabilizing agent and a modifying agent. The modifying agent is one or more of sodium hydroxide, potassium hydroxide, magnesium hydrate and calcium hydroxide. The reacting temperature is controlled to be 60-150 DEG C, so that the water-reducing effect of the prepared admixture is better than that of lignin admixture sold in market.
Description
Technical field
The present invention relates to a kind of concrete admixture and its preparation method and application.
Background technology
When cement mixture operation, for making rapid operation effective, and the early stage demoulding reduction of erection time, need cement mixture to have high workability, effectively suppress the loss of slump, and the sclerosis initial stage there is sufficient early strength, therefore, need to add concrete admixture.
Current concrete admixture with naphthalene system and polycarboxylic acid series product for main flow.The cement mixture workability of naphthalene system product is bad, there is water-reducing rate not high, the problem that loss of slump is large, although polycarboxylic acid series product superior performance, it is bigger than normal that cost is equivalent to naphthalene system product; In addition, modification is carried out to sulfonated lignin and also can prepare concrete admixture, and due to sulfonated lignin wide material sources, cheap, so quite a few as the report of admixture using lignin material, but the water-reducing rate of modified sulfonated lignin is still not high, the application as concrete admixture cannot be met.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of concrete admixture, and not only cost is low, and water-reducing rate is high.
The invention provides a kind of concrete admixture, obtained by sulfonated lignin, suds-stabilizing agent and the properties-correcting agent hybrid reaction prepared by liquid glucose;
The temperature of described hybrid reaction is 60 DEG C ~ 150 DEG C;
Described properties-correcting agent is one or more in sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide.
Preferably, described suds-stabilizing agent is silicone resin polyethers emulsion.
Preferably, the pH value of the reaction system of described hybrid reaction is 9 ~ 11.
Preferably, the temperature of described hybrid reaction is 80 DEG C ~ 100 DEG C.
Preferably, described hybrid reaction also comprise modifying agent become massfraction be 1% ~ 5% modifier aqueous solution.
Preferably, the mass ratio of the sulfonated lignin prepared of described liquid glucose and described suds-stabilizing agent is 100:(0.05 ~ 0.3).
Preferably, described liquid glucose prepares the process of sulfonated lignin and is:
Liquid glucose is obtained sulfonated lignin by chromatographic separation;
The solid content of described liquid glucose is 35wt% ~ 65wt%, and the pH of liquid glucose is 4 ~ 7, and in liquid glucose, reducing sugar is greater than 16%.
Preferably, described liquid glucose is prepared in accordance with the following methods:
By the material containing xylogen and Compound-acid hybrid reaction, obtain liquid glucose;
Described Compound-acid comprises sulfurous gas, non-oxidizing acid and sulphite,
Described non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
Described sulphite is one or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite.
Present invention also offers a kind of concrete admixture composition, comprising: concrete admixture provided by the invention and naphthalene series additive.
Preferably, the mass ratio of described concrete admixture and described naphthalene series additive is (1 ~ 5): 1.
Compared with prior art, concrete admixture provided by the invention, is obtained by sulfonated lignin, suds-stabilizing agent and the properties-correcting agent hybrid reaction prepared by liquid glucose; Wherein, described properties-correcting agent is one or more in sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide, and the temperature controlling reaction is 60 DEG C ~ 150 DEG C, make the admixture effect for preparing better than commercially available lignin admixture water-reducing effect, experimental result shows, the water-reducing rate of admixture of the present invention is more than 8%, and water-insoluble is lower than 0.5wt%.
And admixture prepared by the present invention and naphthalene series additive composite, experimental result shows, its water-reducing rate is more than 14%, and water-insoluble is lower than 0.5%.
Embodiment
The invention provides a kind of concrete admixture, obtained by sulfonated lignin, suds-stabilizing agent and the properties-correcting agent hybrid reaction prepared by liquid glucose;
The temperature of described hybrid reaction is 60 DEG C ~ 150 DEG C;
Described properties-correcting agent is one or more in sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide.
According to the present invention, obtain concrete admixture by sulfonated lignin, suds-stabilizing agent and the properties-correcting agent hybrid reaction prepared by liquid glucose;
Wherein, described properties-correcting agent is one or more in sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide, is preferably sodium hydroxide or calcium hydroxide; And in order to make the admixture better effects if obtained, the present invention preferably modifying agent is become massfraction be 1% ~ 5% modifier aqueous solution, be more preferably and be mixed with the modifier aqueous solution that massfraction is 2% ~ 3%; Described suds-stabilizing agent is preferably silicone resin polyethers emulsion; The mass ratio of sulfonated lignin prepared by described liquid glucose and described suds-stabilizing agent is preferably 100:(0.05 ~ 0.3), be more preferably 100:(0.1 ~ 0.2).
The pH value of described hybrid reaction is preferably 9 ~ 12, is more preferably 10 ~ 11; The temperature of described reaction is 60 DEG C ~ 150 DEG C, is more preferably 70 DEG C ~ 130 DEG C, most preferably is 80 DEG C ~ 100 DEG C, is the most preferably 85 ~ 95 DEG C; The time of described reaction is preferably 1 ~ 12 hour, is more preferably 2 ~ 6 hours, most preferably is 3 ~ 4 hours.
Reaction solution after hybrid reaction is preferably also passed through spraying dry by the present invention, obtain concrete admixture, spray-dired method of the present invention is not particularly limited, spray drying process well known in the art, described spray-dired inlet temperature is preferably 260 DEG C ~ 280 DEG C, and air outlet temperature is preferably 80 DEG C ~ 100 DEG C.
The index of the concrete admixture that the present invention obtains is: moisture is less than 7, pH value is 5.5 ~ 8.5, reducing sugar content (accounting for butt) is for being less than or equal to 8wt%, and water-insoluble (accounting for butt) is for being less than or equal to 0.5%, and vitriol is less than or equal to 6%.
The process that described liquid glucose prepares sulfonated lignin is preferably:
Liquid glucose is obtained sulfonated lignin by chromatographic separation;
The solid content of described liquid glucose is 35wt% ~ 65wt%, and the pH of liquid glucose is 4 ~ 7, and in liquid glucose, reducing sugar is greater than 16%.
According to the present invention, the solid content of described liquid glucose is preferably wt40 ~ 50wt%; Described used in chromatograph resin is preferably one or more in sodium form resin, magnesium types resin, calcium type resin and potassium type resin; The temperature of described separation is preferably 30 ~ 90 DEG C, is more preferably 50 ~ 80 DEG C, and described velocity of separation is preferably 1 ~ 10m/h, is more preferably 2 ~ 6m/h; Described eluent is preferably distilled water.
In order to can better the sulfonated lignin in liquid glucose and wood sugar and other sugar be left, during liquid glucose preferably also carries out by the present invention before chromatographic separation and and filter, the reagent of described neutralization is preferably one or more in sodium hydroxide, magnesium oxide, calcium oxide and potassium hydroxide, the temperature of described neutralization reaction is preferably 30 ~ 80 DEG C, be more preferably 40 ~ 60 DEG C, most preferably be 45 ~ 55 DEG C; After described neutralization reaction, the pH of solution is to being preferably 2 ~ 6, is more preferably 3 ~ 5, most preferably is 4 ~ 5; The mode of described filtration is preferably precoating and drainage, is more preferably Plate Filtration or the filtration of candle formula; Described precoating paint is preferably one or more in diatomite, waste active carbon, perlite and xylose residue, is more preferably one or both in diatomite and waste active carbon; Described precoating amount is preferably 0 ~ 3kg/m
2, be more preferably 0.5 ~ 1.5kg/m
2; Described flocculating aids is one or more in diatomite, waste active carbon and perlite, is more preferably one or both in diatomite and waste active carbon; The temperature of described filtration is preferably 30 ~ 80 DEG C, is more preferably 40 ~ 60 DEG C, most preferably is 45 ~ 55 DEG C; The number of times of described filtration is preferably 1 ~ 4 time, is more preferably 2 ~ 3 times.
Described liquid glucose is preferably prepared in accordance with the following methods:
By the material containing xylogen and Compound-acid hybrid reaction, obtain liquid glucose;
Described Compound-acid comprises sulfurous gas, non-oxidizing acid and sulphite,
Described non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
Described sulphite is one or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite.
Concrete, the present invention does not have particular requirement to the described material containing xylogen, is preferably selected from one or more in corn cob, reed, beans bar and cotton stalk; Be more preferably corn cob or reed; Most preferably be corn cob.Raw material of the present invention is preferably through pulverizing, and the order number that the present invention obtains for the instrument pulverized or pulverizing does not limit, the instrument that acidolysis well known to those skilled in the art is pulverized and order number.
Compound-acid described in the present invention comprises sulfurous gas, non-oxidizing acid and sulphite, and wherein, described non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid; Preferably non-oxidizing acid is two or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid; Described sulphite is one or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite; Be preferably as two or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite; In described Compound-acid, the mass ratio of sulfurous gas, non-oxidizing acid is preferably (10 ~ 95): (2 ~ 50), be more preferably (50 ~ 90): (5 ~ 30), most preferably be (80 ~ 90): (6 ~ 20); The mol ratio of described sulfurous gas and sulphite is for being preferably (10 ~ 95): (0 ~ 10), be more preferably (50 ~ 90): (1 ~ 7), most preferably be (80 ~ 90): (2 ~ 3).
In the present invention, the described material containing xylogen mixes with Compound-acid and carries out acidolysis reaction, obtains liquid glucose; Wherein, be describedly preferably 1:(0.01 ~ 0.1 containing the material of xylogen and the mass ratio of Compound-acid), be more preferably 1:(0.03 ~ 0.08), most preferably be 1:(0.03 ~ 0.06); In order to make reaction better carry out, the content (i.e. solid content) adding water in mixed solution and make the solid in reaction system is also 2 ~ 100wt% by the present invention, is more preferably 4 ~ 90wt%, most preferably is 5.5 ~ 85wt%; The pressure of described reaction is preferably 0.2 ~ 1MPa, is more preferably 0.4 ~ 0.8MPa, most preferably is 0.5 ~ 0.7MPa.
In the present invention, said solid content refers to the mass ratio of reaction raw materials in reaction system and reaction solution (comprising reaction raw materials and solvent).
Present invention also offers a kind of concrete admixture composition, comprise: one or more in concrete admixture provided by the invention and naphthalene series additive, aliphatics admixture and amino admixture, the mass ratio of described concrete admixture and described naphthalene series additive is preferably (1 ~ 5): (1 ~ 10), be more preferably (2 ~ 4): (1 ~ 5), be more preferably (2.5 ~ 3): (2 ~ 4).
Concrete admixture provided by the invention, is obtained by sulfonated lignin, suds-stabilizing agent and the properties-correcting agent hybrid reaction prepared by liquid glucose; Wherein, described properties-correcting agent is one or more in sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide, and the temperature controlling reaction is 60 DEG C ~ 150 DEG C, make the admixture prepared have well water-soluble and surfactivity, be applied to water reducer effect better than commercially available lignin admixture water-reducing effect;
And admixture prepared by the present invention and naphthalene series additive is composite obtains composition, it is higher than the performance of simple naphthalene series additive, 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, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
100g corn cob is pulverized, add 8g sulfurous acid, 1.4g phosphoric acid, 0.5g S-WAT 140 DEG C, be hydrolyzed under 05Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtains xylose residue and liquid glucose after solid-liquid separation.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, then at 50 DEG C of sedimentation 48h, adds sodium hydroxide at 55 DEG C and carry out neutralization reaction, obtain the solution that pH value is 5.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
Be that the aqueous sodium hydroxide solution of 2% and the silicone resin polyethers emulsion of 0.02g are in 85 DEG C of reaction 2h by the sodium lignosulfonate 20g obtained, massfraction, and the add-on of sodium hydroxide is the pH most 9 making reaction system, pass through spraying dry after completion of the reaction, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains concrete admixture.
Measured according to GB 8076-2008 by the concrete admixture obtained, result shows, when volume is 0.25%, its water-reducing rate is 10%, and air content is 3.2%, 3d compressive strength rate 124%, 7d compressive strength rate 126%.By the concrete admixture 20g that obtains and 10g naphthalene water reducer composite, obtain concrete admixture composition;
Measured according to GB 8076-2008 by the concrete admixture composition obtained, result shows, when volume is 0.25%, its water-reducing rate is 17%, and air content is 2.5%, 3d compressive strength rate 135%, 7d compressive strength rate 136%.
Embodiment 2
100g corn cob is pulverized, add 6.5g sulfurous acid, 1.5g oxalic acid, 0.55g S-WAT 160 DEG C, be hydrolyzed under 0.5Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtains xylose residue and liquid glucose after solid-liquid separation.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, then at 50 DEG C of sedimentation 48h, adds sodium hydroxide at 55 DEG C and carry out neutralization reaction, obtain the solution that pH value is 5.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
Be that the aqueous sodium hydroxide solution of 3% and the silicone resin polyethers emulsion of 0.04g are in 95 DEG C of reaction 3h by the sodium lignosulfonate 20g obtained, massfraction, and the add-on of sodium hydroxide is the pH most 10 making reaction system, pass through spraying dry after completion of the reaction, spray-dired inlet temperature is 270 DEG C, air outlet temperature is 90 DEG C, obtains concrete admixture.
Measured according to GB 8076-2008 by the concrete admixture obtained, result shows, when volume is 0.25%, its water-reducing rate is 11%, and air content is 3.0%, 3d compressive strength rate 125%, 7d compressive strength rate 124%.By the concrete admixture 20g that obtains and 6g naphthalene water reducer composite, obtain concrete admixture composition;
Measured according to GB 8076-2008 by the concrete admixture composition obtained, result shows, when volume is 0.25%, its water-reducing rate is 15%, and air content is 2.4%, 3d compressive strength rate 131%, 7d compressive strength rate 134%.
Embodiment 3
300g corn cob is pulverized, add 10g sulfurous acid, 5g sulfuric acid, 1.3g S-WAT 150 DEG C, be hydrolyzed under 0.6Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtains xylose residue and liquid glucose after solid-liquid separation.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, and then at 50 DEG C of sedimentation 48h, 55 DEG C add sodium hydroxide and carry out neutralization reaction, obtain the solution that pH value is 4.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
Be that the aqueous sodium hydroxide solution of 2% and the silicone resin polyethers emulsion of 0.1g are in 95 DEG C of reaction 3h by the sodium lignosulfonate 50g obtained, massfraction, and the add-on of sodium hydroxide is the pH most 10 making reaction system, pass through spraying dry after completion of the reaction, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains concrete admixture.
Measured according to GB 8076-2008 by the concrete admixture obtained, result shows, when volume is 0.25%, its water-reducing rate is 12%, and air content is 2.8%, 3d compressive strength rate 125%, 7d compressive strength rate 126%.By the concrete admixture 30g that obtains and 10g naphthalene water reducer composite, obtain concrete admixture composition;
Measured according to GB 8076-2008 by the concrete admixture composition obtained, result shows, when volume is 0.25%, its water-reducing rate is 16%, and air content is 2.3%, 3d compressive strength rate 136%, 7d compressive strength rate 137%.
Embodiment 4
300g corn cob is pulverized, add 10g sulfurous acid, 5g acetic acid, 1.3g S-WAT 150 DEG C, be hydrolyzed under 0.6Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and xylose residue; Merge liquid glucose, xylose residue adds 100 DEG C of washings of twice, obtains xylose residue and liquid glucose after solid-liquid separation.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, and then at 50 DEG C of sedimentation 48h, 55 DEG C add sodium hydroxide and carry out neutralization reaction, obtain the solution that pH value is 5.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
Be that the aqueous sodium hydroxide solution of 3% and the silicone resin polyethers emulsion of 0.10g are in 85 DEG C of reaction 2h by the sodium lignosulfonate 50g obtained, massfraction, and the add-on of sodium hydroxide is the pH most 9 making reaction system, pass through spraying dry after completion of the reaction, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains concrete admixture.
Measured according to GB 8076-2008 by the concrete admixture obtained, result shows, when volume is 0.25%, its water-reducing rate is 11%, and air content is 3.0%, 3d compressive strength rate 124%, 7d compressive strength rate 125%.By the concrete admixture 40g that obtains and 10g naphthalene water reducer composite, obtain concrete admixture composition;
Measured according to GB 8076-2008 by the concrete admixture composition obtained, result shows, when volume is 0.25%, its water-reducing rate is 15%, and air content is 2.5%, 3d compressive strength rate 133%, 7d compressive strength rate 135%.
Embodiment 5
300g corn cob is pulverized, add 10g sulfurous acid, 2g acetic acid, 3g sulfuric acid, 1.3g S-WAT 150 DEG C, be hydrolyzed under 0.6Mpa, after hydrolysis, solid-liquid separation, obtains liquid glucose and sugared slag; Merge liquid glucose, sugared slag adds 100 DEG C of washings of four times, after solid-liquid separation, obtains liquid glucose and sugared slag; Merge liquid glucose, sugared slag adds 100 DEG C of washings of twice, obtains liquid glucose after solid-liquid separation, merges and obtains liquid glucose.
The liquid glucose obtained is condensed into the solution that solid content is 45wt%, and then at 50 DEG C of sedimentation 48h, 55 DEG C add sodium hydroxide and carry out neutralization reaction, obtain the solution that pH value is 5.
The solution being 5 by the pH obtained carries out Plate Filtration 2 times, and the temperature of filtration is 50 DEG C, and the precoating paint of Plate Filtration is diatomite and waste active carbon, and precoating amount is 1kg/m
2, flocculating aids is diatomite, and add-on is 0.6% of liquid glucose quality, obtains the liquid glucose after filtering.
By the liquid glucose after filtration through chromatographic separation, obtain sodium lignosulfonate, wherein, the temperature of chromatographic separation is 70 DEG C, and the speed of separation is 4m/h, and washing and dehydrating integrated machine is water, and used in chromatograph resin is sodium form resin.
Be that the aqueous sodium hydroxide solution of 3% and the silicone resin polyethers emulsion of 0.05g are in 85 DEG C of reaction 2h by the sodium lignosulfonate 50g obtained, massfraction, and the add-on of sodium hydroxide is the pH most 9 making reaction system, pass through spraying dry after completion of the reaction, spray-dired inlet temperature is 260 DEG C, air outlet temperature is 80 DEG C, obtains concrete admixture.
Measured according to GB 8076-2008 by the concrete admixture obtained, result shows, when volume is 0.25%, its water-reducing rate is 11%, and air content is 3.1%, 3d compressive strength rate 122%, 7d compressive strength rate 124%.By the concrete admixture 25g that obtains and 10g naphthalene water reducer composite, obtain concrete admixture composition;
Measured according to GB 8076-2008 by the concrete admixture composition obtained, result shows, when volume is 0.25%, its water-reducing rate is 18%, and air content is 2.2%, 3d compressive strength rate 138%, 7d compressive strength rate 137%.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a concrete admixture, is obtained by sulfonated lignin, suds-stabilizing agent and the properties-correcting agent hybrid reaction prepared by liquid glucose;
The temperature of described hybrid reaction is 60 DEG C ~ 150 DEG C;
Described properties-correcting agent is one or more in sodium hydroxide, potassium hydroxide, magnesium hydroxide and calcium hydroxide.
2. concrete admixture according to claim 1, is characterized in that, described suds-stabilizing agent is silicone resin polyethers emulsion.
3. concrete admixture according to claim 1, is characterized in that, the pH value of the reaction system of described hybrid reaction is 9 ~ 11.
4. concrete admixture according to claim 1, is characterized in that, the temperature of described hybrid reaction is 80 DEG C ~ 100 DEG C.
5. concrete admixture according to claim 1, is characterized in that, described hybrid reaction also comprise modifying agent become massfraction be 1% ~ 5% modifier aqueous solution.
6. concrete admixture according to claim 1, is characterized in that, the mass ratio of sulfonated lignin prepared by described liquid glucose and described suds-stabilizing agent is 100:(0.05 ~ 0.3).
7. concrete admixture according to claim 1, is characterized in that, the process that described liquid glucose prepares sulfonated lignin is:
Liquid glucose is obtained sulfonated lignin by chromatographic separation;
The solid content of described liquid glucose is 35wt% ~ 65wt%, and the pH of liquid glucose is 4 ~ 7, and in liquid glucose, reducing sugar is greater than 16%.
8. concrete admixture according to claim 1, is characterized in that, described liquid glucose is prepared in accordance with the following methods:
By the material containing xylogen and Compound-acid hybrid reaction, obtain liquid glucose;
Described Compound-acid comprises sulfurous gas, non-oxidizing acid and sulphite,
Described non-oxidizing acid is one or more in phosphoric acid, sulfuric acid, oxalic acid and acetic acid,
Described sulphite is one or more in S-WAT, potassium sulfite, magnesium sulfite and calcium sulfite.
9. a concrete admixture composition, comprising: one or more in the concrete admixture described in claim 1 ~ 8 any one and naphthalene series additive, aliphatics admixture and amino admixture.
10. admixture according to claim 9, is characterized in that, the mass ratio of described concrete admixture and described naphthalene series additive is (1 ~ 5): (1 ~ 10).
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| CN112390660A (en) * | 2020-10-29 | 2021-02-23 | 成都聚力混凝土有限公司 | Special vegetation concrete for slope protection and greening and preparation method thereof |
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