CN103819117A - Alkali-free chloride-free liquid concrete enhancer and preparation method thereof - Google Patents
Alkali-free chloride-free liquid concrete enhancer and preparation method thereof Download PDFInfo
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- CN103819117A CN103819117A CN201410008124.4A CN201410008124A CN103819117A CN 103819117 A CN103819117 A CN 103819117A CN 201410008124 A CN201410008124 A CN 201410008124A CN 103819117 A CN103819117 A CN 103819117A
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Abstract
The invention relates to an alkali-free chloride-free liquid concrete enhancer and a preparation method thereof, wherein the enhancer mainly comprises the following materials according to weight percentages: 20-80% of anhydrous aluminum sulfate, 5-20% of triethanolamine, 0-0.2% of stabilizer, and 15-60% of water. The concrete enhancer is lower in cost, the preparation process is simple, the production of the ettringite in the early stage is increased when the concrete enhancer is added into a concrete mixture, so that more chemical bonds with stronger binding forces are produced among cement hydration particles, the Van der Waals' force is replaced the binding force of a cementing material is increased, the strength of the cement and concrete is reached, the quality and the property of the concrete material are improved, and the amount of consumed concrete cement is reduced.
Description
Technical field
The present invention relates to cement additire technical field, be specifically related to a kind of alkali-free chlorine-free liquid concrete toughener and preparation method thereof.
Background technology
Selecting suitable adulterant and admixture, is one of approach improving concrete strength.In cement concrete industry, for country advocate Developing Circulation Economy, the industrial structure policy of Accelerating The Construction resource-conserving and environment-friendly society is coordinated mutually.Mineral admixture has been widely applied in cement concrete, and Save Resource Protect Environment is object on the one hand, for improving chemical constitution, the minimizing porosity of cement matrix, improves concrete rheology and Hardenability on the other hand.
The admixture using in concrete, be mostly by water reducer with other as multifunctional product that air entrapment agent, accelerating chemicals, hardening accelerator etc. are composited, and 100% concrete almost, especially commerical ready-mixed concrete, all uses admixture.Because various chemical admixtures go out good affinity to cement granules or hydrated cementitious particle performance, this has caused obvious adsorption.The result of absorption will change interface environments, form microenvironment in dispersion, finally affect Behavior of Hardened Cement Paste macroscopic property.Mixing of admixture greatly improved the performance (newly mixing performance and permanent performance) of concrete mix, but admixture improper use may cause concrete segregation.In addition, between the admixture of different varieties and different varieties cement, also there is compatible problem; Not on request, arbitrarily use admixture, also can cause concrete quality to worsen.
Summary of the invention
The object of the invention is the deficiency for solving the problems of the technologies described above, a kind of alkali-free chlorine-free liquid concrete toughener and preparation method thereof is provided, the feature such as the synergistic agent making has efficiently, extended storage stability is good and suitability is extensive.
The present invention is the deficiency solving the problems of the technologies described above, the technical scheme adopting is: a kind of alkali-free chlorine-free liquid concrete toughener, mainly formed by the raw material of following weight percent: anhydrous slufuric acid aluminium 20～80%, trolamine 5～20%, stablizer 0～0.2% and water 15～60%.
Described stablizer is acrylamide or Sipacril 2739OF.
Described toughener also comprises aluminium hydroxide and hydrofluoric acid, and wherein the weight of aluminium hydroxide is less than 10% of raw material gross weight, and fluohydric acid content is 1～2 times of aluminium hydroxide weight.
A kind of alkali-free chlorine-free liquid concrete toughener, is made up of the raw material of following weight percent: anhydrous slufuric acid aluminium 30～60%, trolamine 5～20%, stablizer 0.05～0.1%, aluminium hydroxide 5～10%, hydrofluoric acid 10～20% and water 19～49%.
The preparation method of above-mentioned alkali-free chlorine-free liquid concrete toughener, is characterized in that: comprise the following steps:
1) get, by weight percentage anhydrous slufuric acid aluminium 30～60%, trolamine 5～20%, stablizer 0.05～0.1%, aluminium hydroxide 5～10%, hydrofluoric acid 10～20% and water 19～49%, for subsequent use;
2), anhydrous slufuric acid aluminium is added to the water, after stirring, obtain alum liquor, for subsequent use;
3), hydrofluoric acid is placed in to plastic containers, then slowly add aluminium hydroxide, after question response completes, collect reacted aluminun fluoride solution, for subsequent use;
4), by step 2) aluminun fluoride solution that obtains of the alum liquor that obtains and step 3) mixes, and then adds trolamine and is uniformly mixed, and finally slowly adds stablizer, stirs until become uniform liquid, is liquid concrete toughener.
beneficial effect
Alkali-free chlorine-free liquid concrete toughener cost of the present invention is lower, preparation technology is simple, join in concrete mix, can improve the growing amount of early stage ettringite, make to produce the chemical bonding more, bonding force is stronger between hydrated cementitious particle, replace Van der Waals force, improve the bond of gelling material self, reach and improve cement and concrete strength, promote concrete material quality and performance, reduce concrete cement consumption.
Embodiment
A kind of alkali-free chlorine-free liquid concrete toughener, is mainly made up of the raw material of following weight percent: anhydrous slufuric acid aluminium 20～80%, trolamine 5～20%, stablizer 0～0.2% and water 15～60%.
Described stablizer is acrylamide or Sipacril 2739OF.
Described toughener also comprises aluminium hydroxide and hydrofluoric acid, and wherein the weight of aluminium hydroxide is less than 10% of raw material gross weight, and fluohydric acid content is 1～2 times of aluminium hydroxide weight.
A kind of alkali-free chlorine-free liquid concrete toughener, is made up of the raw material of following weight percent: anhydrous slufuric acid aluminium 30～60%, trolamine 5～20%, stablizer 0.05～0.1%, aluminium hydroxide 5～10%, hydrofluoric acid 10～20% and water 19～49%.
The preparation method of above-mentioned alkali-free chlorine-free liquid concrete toughener, is characterized in that: comprise the following steps:
1) get, by weight percentage anhydrous slufuric acid aluminium 30～60%, trolamine 5～20%, stablizer 0.05～0.1%, aluminium hydroxide 5～10%, hydrofluoric acid 10～20% and water 19～49%, for subsequent use;
2), anhydrous slufuric acid aluminium is added to the water, after stirring, obtain alum liquor, for subsequent use;
3), hydrofluoric acid is placed in to plastic containers, then slowly add aluminium hydroxide, after question response completes, collect reacted aluminun fluoride solution, for subsequent use;
4), by step 2) aluminun fluoride solution that obtains of the alum liquor that obtains and step 3) mixes, and then adds trolamine and is uniformly mixed, and finally slowly adds stablizer, stirs until become uniform liquid, is liquid concrete toughener.
Below specific embodiments of the invention:
embodiment 1
A kind of alkali-free chlorine-free liquid concrete toughener, is made up of the raw material of following weight percent: anhydrous slufuric acid aluminium 45%, trolamine 5%, stablizer 0.1%, aluminium hydroxide 5%, hydrofluoric acid 10% and water 34.9%.Described stablizer is acrylamide.
The preparation method of above-mentioned alkali-free chlorine-free liquid concrete toughener, comprises the following steps:
1) get, by weight percentage anhydrous slufuric acid aluminium 45%, trolamine 5%, stablizer 0.1%, aluminium hydroxide 5%, hydrofluoric acid 10% and water 34.9%, for subsequent use;
2), anhydrous slufuric acid aluminium is added to the water, after stirring, obtain alum liquor, for subsequent use;
3), hydrofluoric acid is placed in to plastic containers, then slowly add aluminium hydroxide, after question response completes, collect reacted aluminun fluoride solution, for subsequent use;
4), by step 2) aluminun fluoride solution that obtains of the alum liquor that obtains and step 3) mixes, and then adds trolamine and is uniformly mixed, and finally slowly adds stablizer, stirs until become uniform liquid, is liquid concrete toughener.
embodiment 2
A kind of alkali-free chlorine-free liquid concrete toughener, is made up of the raw material of following weight percent: anhydrous slufuric acid aluminium 30%, trolamine 20%, stablizer 0.05%, aluminium hydroxide 10%, hydrofluoric acid 20% and water 19.95%.Described stablizer is acrylamide.
The preparation method of above-mentioned alkali-free chlorine-free liquid concrete toughener, comprises the following steps:
1) get, by weight percentage anhydrous slufuric acid aluminium 30%, trolamine 20%, stablizer 0.05%, aluminium hydroxide 10%, hydrofluoric acid 20% and water 19.95%, for subsequent use;
2), anhydrous slufuric acid aluminium is added to the water, after stirring, obtain alum liquor, for subsequent use;
3), hydrofluoric acid is placed in to plastic containers, then slowly add aluminium hydroxide, after question response completes, collect reacted aluminun fluoride solution, for subsequent use;
4), by step 2) aluminun fluoride solution that obtains of the alum liquor that obtains and step 3) mixes, and then adds trolamine and is uniformly mixed, and finally slowly adds stablizer, stirs until become uniform liquid, is liquid concrete toughener.
embodiment 3
A kind of alkali-free chlorine-free liquid concrete toughener, is made up of the raw material of following weight percent: anhydrous slufuric acid aluminium 60%, trolamine 5%, stablizer 0.05%, aluminium hydroxide 6%, hydrofluoric acid 10% and water 18.95%.Described stablizer is Sipacril 2739OF.
The preparation method of above-mentioned alkali-free chlorine-free liquid concrete toughener, comprises the following steps:
1) get, by weight percentage anhydrous slufuric acid aluminium 60%, trolamine 5%, stablizer 0.05%, aluminium hydroxide 6%, hydrofluoric acid 10% and water 18.95%, for subsequent use;
2), anhydrous slufuric acid aluminium is added to the water, after stirring, obtain alum liquor, for subsequent use;
3), hydrofluoric acid is placed in to plastic containers, then slowly add aluminium hydroxide, after question response completes, collect reacted aluminun fluoride solution, for subsequent use;
4), by step 2) aluminun fluoride solution that obtains of the alum liquor that obtains and step 3) mixes, and then adds trolamine and is uniformly mixed, and finally slowly adds stablizer, stirs until become uniform liquid, is liquid concrete toughener.
embodiment 4
A kind of alkali-free chlorine-free liquid concrete toughener, is made up of the raw material of following weight percent: anhydrous slufuric acid aluminium 50%, trolamine 10%, stablizer 0.05% and water 18.95%.Described stablizer is acrylamide.
The preparation method of above-mentioned alkali-free chlorine-free liquid concrete toughener, comprises the following steps:
1) get, by weight percentage anhydrous slufuric acid aluminium 60%, trolamine 5%, stablizer 0.05%, aluminium hydroxide 6%, hydrofluoric acid 10% and water 39.95%, for subsequent use;
2), anhydrous slufuric acid aluminium is added to the water, after stirring, obtain alum liquor, for subsequent use;
3), in alum liquor, add trolamine and be uniformly mixed, finally slowly add stablizer, stir until become uniform liquid, be liquid concrete toughener.
testing data
According to the detection method of GB/T 17671-1999, adopt PO42.5 cement, carry out the test of sand-cement slurry ultimate compression strength.Wherein efficient alkali-free chlorine-free liquid concrete toughener is according to the percentage calculation of cement weight.
Sand-cement slurry intensity test:
Cement 450g
Standard sand 1350g
Water 225g
The volume of synergistic agent is that 0.2% of cement weight joins in cement slurry, and test-results is as shown in the table:
Table 1 is folding strength and the ultimate compression strength of cement mortar;
As can be seen from the above table: patent of the present invention (0.2%) under lower volume can make the 1d of cement mortar, 3d folding strength improve respectively 150%, more than 45%, 1d, 3d ultimate compression strength improves respectively 150%, more than 57%.28d folding strength improves 30%, 28d ultimate compression strength and improves 20%; The development of cement mortar early anti pressured intension is very fast, and later strength is higher.
Claims (4)
1. an alkali-free chlorine-free liquid concrete toughener, is characterized in that: be mainly made up of the raw material of following weight percent: anhydrous slufuric acid aluminium 20～80%, trolamine 5～20%, stablizer 0～0.2% and water 15～60%.
2. a kind of alkali-free chlorine-free liquid concrete toughener as claimed in claim 1, is characterized in that: described stablizer is acrylamide or methacrylic acid
A kind of alkali-free chlorine-free liquid concrete toughener as claimed in claim 2, it is characterized in that: described toughener also comprises aluminium hydroxide and hydrofluoric acid, wherein the weight of aluminium hydroxide is less than 10% of raw material gross weight, and fluohydric acid content is 1～2 times of aluminium hydroxide weight.
3. a kind of alkali-free chlorine-free liquid concrete toughener as claimed in claim 3, it is characterized in that: the raw material by following weight percent forms: anhydrous slufuric acid aluminium 30～60%, trolamine 5～20%, stablizer 0.05～0.1%, aluminium hydroxide 5～10%, hydrofluoric acid 10～20% and water 19～49%.
4. the preparation method of alkali-free chlorine-free liquid concrete toughener as claimed in claim 4, is characterized in that: comprise the following steps:
1) get, by weight percentage anhydrous slufuric acid aluminium 30～60%, trolamine 5～20%, stablizer 0.05～0.1%, aluminium hydroxide 5～10%, hydrofluoric acid 10～20% and water 19～49%, for subsequent use;
2), anhydrous slufuric acid aluminium is added to the water, after stirring, obtain alum liquor, for subsequent use;
3), hydrofluoric acid is placed in to plastic containers, then slowly add aluminium hydroxide, after question response completes, collect reacted aluminun fluoride solution, for subsequent use;
4), by step 2) aluminun fluoride solution that obtains of the alum liquor that obtains and step 3) mixes, and then adds trolamine and is uniformly mixed, and finally slowly adds stablizer, stirs until become uniform liquid, is liquid concrete toughener.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104072011A (en) * | 2014-07-11 | 2014-10-01 | 山西格瑞特建筑科技有限公司 | Alkali-free concrete liquid quick-setting reinforcing agent |
| CN107601948A (en) * | 2017-09-28 | 2018-01-19 | 中国建材检验认证集团厦门宏业有限公司 | A kind of gunite concrete low-alkaline liquid accelerating agent and preparation method thereof |
| CN108101403A (en) * | 2017-12-28 | 2018-06-01 | 科之杰新材料集团有限公司 | A kind of preparation method of environment-friendly type alkali-free liquid accelerator |
| CN108911555A (en) * | 2018-08-02 | 2018-11-30 | 四川恒泽建材有限公司 | A kind of gunite concrete alkali-free chlorine-free liquid accelerator and preparation method thereof |
| CN112456853A (en) * | 2020-12-16 | 2021-03-09 | 湖南加美乐素新材料股份有限公司 | High-strength alkali-free liquid accelerator and preparation method thereof |
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| CN102229477A (en) * | 2011-04-29 | 2011-11-02 | 中国建筑材料科学研究总院 | Alkali-free and chlorine-free liquid concrete accelerating agent as well as preparation method and application thereof |
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104072011A (en) * | 2014-07-11 | 2014-10-01 | 山西格瑞特建筑科技有限公司 | Alkali-free concrete liquid quick-setting reinforcing agent |
| CN107601948A (en) * | 2017-09-28 | 2018-01-19 | 中国建材检验认证集团厦门宏业有限公司 | A kind of gunite concrete low-alkaline liquid accelerating agent and preparation method thereof |
| CN108101403A (en) * | 2017-12-28 | 2018-06-01 | 科之杰新材料集团有限公司 | A kind of preparation method of environment-friendly type alkali-free liquid accelerator |
| CN108911555A (en) * | 2018-08-02 | 2018-11-30 | 四川恒泽建材有限公司 | A kind of gunite concrete alkali-free chlorine-free liquid accelerator and preparation method thereof |
| CN112456853A (en) * | 2020-12-16 | 2021-03-09 | 湖南加美乐素新材料股份有限公司 | High-strength alkali-free liquid accelerator and preparation method thereof |
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| CN103819117B (en) | 2016-03-30 |
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