CN115368053B - Reinforced gel reducing auxiliary agent and preparation method thereof - Google Patents
Reinforced gel reducing auxiliary agent and preparation method thereof Download PDFInfo
- Publication number
- CN115368053B CN115368053B CN202111230840.3A CN202111230840A CN115368053B CN 115368053 B CN115368053 B CN 115368053B CN 202111230840 A CN202111230840 A CN 202111230840A CN 115368053 B CN115368053 B CN 115368053B
- Authority
- CN
- China
- Prior art keywords
- auxiliary agent
- alcohol
- reducing auxiliary
- sulfonate
- phosphate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000012752 auxiliary agent Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 29
- 239000010452 phosphate Substances 0.000 claims abstract description 29
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 29
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 21
- 239000012958 Amine synergist Substances 0.000 claims abstract description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 150000001412 amines Chemical class 0.000 claims description 22
- 150000005846 sugar alcohols Polymers 0.000 claims description 22
- 229920002401 polyacrylamide Polymers 0.000 claims description 21
- 150000001414 amino alcohols Chemical class 0.000 claims description 15
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical group [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 12
- 125000000129 anionic group Chemical group 0.000 claims description 11
- 150000002191 fatty alcohols Chemical class 0.000 claims description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 9
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical group [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 8
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 8
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 8
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 8
- AHZILZSKKSPIKM-UHFFFAOYSA-N 3-aminooctan-4-ol Chemical compound CCCCC(O)C(N)CC AHZILZSKKSPIKM-UHFFFAOYSA-N 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical group OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- 239000003292 glue Substances 0.000 abstract description 15
- 239000004568 cement Substances 0.000 abstract description 12
- -1 alcohol amine Chemical class 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 10
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 206010003591 Ataxia Diseases 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010257 thawing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 235000019832 sodium triphosphate Nutrition 0.000 description 3
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 2
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- LDMOEFOXLIZJOW-UHFFFAOYSA-N 1-dodecanesulfonic acid Chemical compound CCCCCCCCCCCCS(O)(=O)=O LDMOEFOXLIZJOW-UHFFFAOYSA-N 0.000 description 1
- SWVSKCPPMNGBGL-UHFFFAOYSA-N 10-aminodecan-1-ol Chemical compound NCCCCCCCCCCO SWVSKCPPMNGBGL-UHFFFAOYSA-N 0.000 description 1
- IIWXYWWVCBRBCJ-UHFFFAOYSA-N 12-aminododecan-1-ol Chemical compound NCCCCCCCCCCCCO IIWXYWWVCBRBCJ-UHFFFAOYSA-N 0.000 description 1
- UXFQFBNBSPQBJW-UHFFFAOYSA-N 2-amino-2-methylpropane-1,3-diol Chemical compound OCC(N)(C)CO UXFQFBNBSPQBJW-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- WUGQZFFCHPXWKQ-UHFFFAOYSA-N Propanolamine Chemical compound NCCCO WUGQZFFCHPXWKQ-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 229920005551 calcium lignosulfonate Polymers 0.000 description 1
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229940048084 pyrophosphate Drugs 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000012747 synergistic agent Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical group [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to C04B, in particular to a reinforcing and glue reducing auxiliary agent and a preparation method thereof. The preparation raw materials of the gel reducing auxiliary agent comprise the following components in percentage by weight: 15 to 25 weight percent of polycarboxylate, 10 to 15 weight percent of alcohol amine synergist, 2 to 5 weight percent of sulfonate and the balance of water. By using the combined action of polycarboxylate and alcohol amine, the concrete with higher short-term and long-term strength can be obtained while the cement consumption is reduced. And by adding phosphate and alcohol amine to act together, the workability can be improved, and the problems of water seepage and the like can be solved. In addition, the gel reducing auxiliary agent provided by the invention is used in concrete, can promote the discharge of gas and improves the compactness of the concrete.
Description
Technical Field
The invention relates to C04B, in particular to a reinforcing and glue reducing auxiliary agent and a preparation method thereof.
Background
Concrete is used as an important material in construction engineering, but some cement in the concrete is difficult to be fully hydrated, so that effective utilization of cement cannot be realized, and although the addition of the water reducing agent is beneficial to promoting the dispersion of cement, some cement particles are still in a gel structure, so that the full utilization of cement is difficult to be realized by the addition of a pure water reducing agent.
CN111960716a provides a synergistic and glue-reducing agent for concrete and a preparation method thereof, wherein the synergistic and glue-reducing agent consists of a water-retaining compact component, a reinforcing component, a complex component, an air entraining component, a defoaming component, an auxiliary component and water; improving workability and durability of concrete.
However, the existing glue reducing agent has the problems of larger drying loss, difficult foam discharge and the like in the use process, and influences the use and the stable mechanical property of the hardened concrete.
Disclosure of Invention
In order to solve the problems, the first aspect of the invention provides a reinforcing glue reducing auxiliary agent,
the preparation raw materials of the glue reducing auxiliary agent comprise the following components in percentage by weight: 15 to 25 weight percent of polycarboxylate, 10 to 15 weight percent of alcohol amine synergist, 2 to 5 weight percent of sulfonate and the balance of water.
The polycarboxylate is used as the main part of the glue reducing agent, and the dispersing effect of the polycarboxylate on cement particles is utilized to promote the dispersion and hydration of cement, mineral powder and the like, so that the strength is improved.
In the polycarboxylate cement-piling dispersing process, the inventor finds that the strength of the concrete can be further improved by adding a proper amount of polyalcohol amine and utilizing the complexing of the polyalcohol amine to mineral ions and the combination of the polyalcohol amine and hydration products, and also finds that the workability is also improved when the polycarboxylate and the polyalcohol amine are used together. In one embodiment, the alcohol amine synergist comprises a polyhydric alcohol amine selected from one or more of triethanolamine, triisopropanolamine, 2-amino-2-methyl-1, 3-propanediol.
The inventor finds that partial bubbles enter, merge, break and the like in the process of co-coating particles such as cement and the like by polycarboxylate and polyalcohol amine, and influences the strength and fluidity of the concrete, and the inventor finds that the stability of the bubble and water interface film can be fully improved by adding sulfonate, especially lignin sulfonate, compared with dodecyl sulfonate, by a larger lignin structure, the formation of tiny bubbles is promoted, the aggregation and breaking of the bubbles are reduced, the strength is improved, and the fluidity loss is reduced. Thereby enhancing as one embodiment, the sulfonate is selected from one or more of calcium lignosulfonate, sodium dodecyl benzene sulfonate. Sodium lignin sulfonate is preferred.
The polyacrylamide is a chain acrylic polymer containing amino groups and has high water solubility, when the polyacrylamide is added into the glue reducing agent, the anionic polyacrylamide and the like and polycarboxylate are utilized to perform competitive adsorption and charge neutralization on cement, mineral powder and the like, so that hydration can be further promoted, micro bubbles are further promoted to be formed and stabilized, and the possibility is that the structure of the polyacrylamide polyamine group is also combined with lignosulfonate to a certain extent, the surface energy of a hydrophilic film is further reduced, and micro bubbles are further generated and stabilized, so that the strength is improved, the addition of the high molecular weight polyacrylamide does not influence the mobility, and in one embodiment, the glue reducing agent is prepared from 0.5-2 wt% of polyacrylamide. The polyacrylamide is anionic polyacrylamide and can be purchased from the company of gold source chemical industry, inc. of the consolidated city.
In addition, the amount of small bubbles introduced through sulfonate and polyacrylamide cannot be too much, otherwise shrinkage of the hardened concrete is caused, and the inventor finds that when amino alcohol and polyalcohol amine are added together to serve as a synergistic agent, the amino group and the hydroxyl group of the amino alcohol and polyalcohol amine are combined with a hydrophilic film, and longer alkyl chains are distributed to the air surface, so that proper discharge of bubbles is facilitated, the mixed concrete with proper air content is obtained, and the phenomenon of shrinkage after hardening is reduced. In one embodiment, the alcohol amine synergist further comprises an amino alcohol selected from one or more of 3-amino-4-octanol, 3-amino-1-propanol, 10-amino-1-decanol, 12-amino-1-dodecanol. Preferably an aminoalcohol having 8 or more carbon atoms, more preferably an aminoalcohol having 8 to 12 carbon atoms.
In one embodiment, the weight ratio of the amino alcohol to the polyalcohol amine is 1:2 to 4.
Through adding phosphate, the inventor finds that the co-ionic effect of calcium ions in phosphate, cement and mineral powder is beneficial to regulating the gelation structure and cohesion together with polyacrylamide in the concrete mixing process, so that the fineness of hydration particles is promoted to be reduced, a more uniform skeleton structure is obtained, and hardening shrinkage is reduced. In one embodiment, the preparation raw materials of the glue reducing auxiliary agent further comprise 2-5 wt% of phosphate in percentage by weight. In one embodiment, the phosphate comprises at least one of sodium pyrophosphate and sodium tripolyphosphate.
And when the fatty alcohol polyoxyethylene ether phosphate, pyrophosphate and other phosphate are added to obtain a calcium phosphate structure, shrinkage and air content are improved, the inventor finds that the method is favorable for reducing the damage of a hydrated framework and air bubbles of the concrete after repeated freezing and thawing and reducing the loss of compressive strength. In one embodiment, the phosphate further comprises C16-C18 fatty alcohol polyoxyethylene ether phosphate, such as MOA-3PK-40 and MOA-9PK-40 of Haihua.
In one embodiment, the weight ratio of at least one of sodium pyrophosphate and sodium tripolyphosphate to C16-C18 fatty alcohol polyoxyethylene ether phosphate is 1-2: 1 to 2.
The second aspect of the invention provides a preparation method of the glue reducing auxiliary agent, which comprises the following steps: and mixing the preparation raw materials of the gel reducing auxiliary agent to obtain the gel reducing auxiliary agent.
Compared with the prior art, the invention has the following beneficial effects: by using the combined action of polycarboxylate and alcohol amine, the concrete with higher short-term and long-term strength can be obtained while the cement consumption is reduced. And by adding phosphate and alcohol amine to act together, the workability can be improved, and the problems of water seepage and the like can be solved. In addition, the gel reducing auxiliary agent provided by the invention is used in concrete, can promote the discharge of gas and improves the compactness of the concrete.
Detailed Description
Examples
Example 1
The embodiment provides a glue reducing auxiliary agent, which comprises the following preparation raw materials in percentage by weight: 25wt% of polycarboxylate, 15wt% of alcohol amine synergist, 5wt% of sulfonate, 1.5wt% of anionic polyacrylamide, 5wt% of phosphate and the balance of water, wherein the alcohol amine synergist comprises polyalcohol amine and amino alcohol in a weight ratio of 4:1, wherein the polyalcohol amine is triethanolamine, the amino alcohol is 3-amino-4-octanol, the sulfonate is sodium lignin sulfonate, and the phosphate comprises sodium pyrophosphate and C16-C18 fatty alcohol polyoxyethylene ether phosphate MOA-9PK-40, and the weight ratio is 1:1.
the polycarboxylate is purchased from Nantong Runfeng petrochemical Co.
The sodium lignin sulfonate was purchased from ataxia qinghai chemical company.
The anionic polyacrylamide was purchased from the company of gold source chemical industry, incorporated.
The example also provides a preparation method of the gel reducing additive, which comprises the following steps: and mixing the preparation raw materials of the gel reducing auxiliary agent to obtain the gel reducing auxiliary agent.
Example 2
The embodiment provides a glue reducing auxiliary agent, which comprises the following preparation raw materials in percentage by weight: 20wt% of polycarboxylate, 10wt% of alcohol amine synergist, 2wt% of sulfonate, 1wt% of anionic polyacrylamide, 2wt% of phosphate and the balance of water, wherein the alcohol amine synergist comprises polyalcohol amine and amino alcohol in a weight ratio of 3:1, wherein the polyalcohol amine is triisopropanolamine, the amino alcohol is 3-amino-4-octanol, the sulfonate is sodium lignin sulfonate, and the phosphate comprises sodium tripolyphosphate and C16-C18 fatty alcohol polyoxyethylene ether phosphate MOA-9PK-40, wherein the weight ratio is 2:1.
the polycarboxylate is purchased from Nantong Runfeng petrochemical Co.
The sodium lignin sulfonate was purchased from ataxia qinghai chemical company.
The anionic polyacrylamide was purchased from the company of gold source chemical industry, incorporated.
The example also provides a preparation method of the gel reducing additive, which comprises the following steps: and mixing the preparation raw materials of the gel reducing auxiliary agent to obtain the gel reducing auxiliary agent.
Example 3
The embodiment provides a glue reducing auxiliary agent, which comprises the following preparation raw materials in percentage by weight: 25wt% of polycarboxylate, 15wt% of alcohol amine synergist, 5wt% of sulfonate, 5wt% of phosphate and the balance of water, wherein the alcohol amine synergist comprises polyalcohol amine and amino alcohol in a weight ratio of 4:1, wherein the polyalcohol amine is triethanolamine, the amino alcohol is 3-amino-4-octanol, the sulfonate is sodium lignin sulfonate, and the phosphate comprises sodium pyrophosphate and C16-C18 fatty alcohol polyoxyethylene ether phosphate MOA-9PK-40, and the weight ratio is 1:1.
the polycarboxylate is purchased from Nantong Runfeng petrochemical Co.
The sodium lignin sulfonate was purchased from ataxia qinghai chemical company.
The example also provides a preparation method of the gel reducing additive, which comprises the following steps: and mixing the preparation raw materials of the gel reducing auxiliary agent to obtain the gel reducing auxiliary agent.
Example 4
The embodiment provides a glue reducing auxiliary agent, which comprises the following preparation raw materials in percentage by weight: 25wt% of polycarboxylate, 15wt% of alcohol amine synergist, 5wt% of sulfonate, 1.5wt% of anionic polyacrylamide, 5wt% of phosphate and the balance of water, wherein the alcohol amine synergist comprises polyalcohol amine, the polyalcohol amine is triethanolamine, the sulfonate is sodium lignin sulfonate, the phosphate comprises sodium pyrophosphate and C16-C18 fatty alcohol polyoxyethylene ether phosphate MOA-9PK-40, and the weight ratio is 1:1.
the polycarboxylate is purchased from Nantong Runfeng petrochemical Co.
The sodium lignin sulfonate was purchased from ataxia qinghai chemical company.
The anionic polyacrylamide was purchased from the company of gold source chemical industry, incorporated.
The example also provides a preparation method of the gel reducing additive, which comprises the following steps: and mixing the preparation raw materials of the gel reducing auxiliary agent to obtain the gel reducing auxiliary agent.
Example 5
The embodiment provides a glue reducing auxiliary agent, which comprises the following preparation raw materials in percentage by weight: 25wt% of polycarboxylate, 15wt% of alcohol amine synergist, 5wt% of sulfonate, 1.5wt% of anionic polyacrylamide, 5wt% of phosphate and the balance of water, wherein the alcohol amine synergist comprises polyalcohol amine and amino alcohol in a weight ratio of 4:1, wherein the polyalcohol amine is triethanolamine, the amino alcohol is 3-amino-4-octanol, the sulfonate is sodium lignin sulfonate, and the phosphate comprises sodium pyrophosphate.
The polycarboxylate is purchased from Nantong Runfeng petrochemical Co.
The sodium lignin sulfonate was purchased from ataxia qinghai chemical company.
The anionic polyacrylamide was purchased from the company of gold source chemical industry, incorporated.
The example also provides a preparation method of the gel reducing additive, which comprises the following steps: and mixing the preparation raw materials of the gel reducing auxiliary agent to obtain the gel reducing auxiliary agent.
Evaluation of Performance
According to JC/T2469-2018, the gel reducing aid provided in the examples was added to concrete in an amount of 2wt% and as an experimental group the following tests were carried out:
1. change in gas content: the amount of change in the air content over time was calculated from JC/T2469-2018 for 1 hour, and the results are shown in Table 1.
2. Cure shrinkage: volume shrinkage ratios V1, V2 of 30d, 60d were obtained according to JC/T2469-2018, and the long-term hardening shrinkage ratio (V2-V1)/V1 x 100% was calculated, and the results are shown in table 1.
3. Compression strength loss ratio (slow freezing method) of 50 times of freezing and thawing cycles: the compression strength loss rate was calculated for 50 freeze-thaw cycles according to JC/T2469-2018, and the results are shown in Table 1.
TABLE 1
| Examples | Gas content variation% | Cure shrinkage% | Freeze thawing loss rate% |
| 1 | 1.3 | 6.7 | 20 |
| 2 | 1.1 | 7.2 | 25 |
| 3 | 1.8 | 7.4 | - |
| 4 | 1.7 | 8.1 | - |
| 5 | 1.4 | 7.1 | 27 |
4. The gel reducing assistants provided in examples 1-2 meet JC/T2469-2018 standard, and the specific standard is shown in Table 2.
TABLE 2
The test result shows that the gel reducing auxiliary agent provided by the invention can be used in the concrete processing process, and can improve the compressive strength and reduce the mechanical property reduction during shrinkage cracking or freeze thawing when the gel and water are reduced.
Claims (2)
1. The reinforcing and reducing auxiliary agent is characterized by comprising the following preparation raw materials in percentage by weight: 15-25 wt% of polycarboxylate, 10-15 wt% of alcohol amine synergist, 2-5 wt% of sulfonate, 2-5 wt% of phosphate, 0.5-2 wt% of polyacrylamide and the balance of water, wherein the alcohol amine synergist comprises polyalcohol amine, the polyalcohol amine is triethanolamine, the alcohol amine synergist further comprises amino alcohol, the amino alcohol is 3-amino-4-octanol, and the weight ratio of the amino alcohol to the polyalcohol amine is 1:2 to 4; the phosphate is sodium pyrophosphate and C16-C18 fatty alcohol polyoxyethylene ether phosphate, and the weight ratio of the sodium pyrophosphate to the C16-C18 fatty alcohol polyoxyethylene ether phosphate is 1-2: 1 to 2; the sulfonate is sodium lignin sulfonate; the polyacrylamide is anionic polyacrylamide.
2. A method of preparing the enhanced let-down aid of claim 1, comprising: and mixing the preparation raw materials of the gel reducing auxiliary agent to obtain the gel reducing auxiliary agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230840.3A CN115368053B (en) | 2021-10-22 | 2021-10-22 | Reinforced gel reducing auxiliary agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230840.3A CN115368053B (en) | 2021-10-22 | 2021-10-22 | Reinforced gel reducing auxiliary agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115368053A CN115368053A (en) | 2022-11-22 |
| CN115368053B true CN115368053B (en) | 2023-11-07 |
Family
ID=84060041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111230840.3A Active CN115368053B (en) | 2021-10-22 | 2021-10-22 | Reinforced gel reducing auxiliary agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115368053B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446115A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Concrete synergist |
| CN105036587A (en) * | 2015-09-06 | 2015-11-11 | 山东宏艺科技股份有限公司 | High-performance concrete synergist and preparing method thereof |
| CN105293983A (en) * | 2015-11-06 | 2016-02-03 | 湖北工业大学 | High-adaptability glue reducing agent for concrete |
| CN109438627A (en) * | 2018-09-12 | 2019-03-08 | 湖北工业大学 | A kind of method that both sexes polyethers polycarboxylate compound preparation subtracts jelly |
| CN110482897A (en) * | 2019-07-19 | 2019-11-22 | 傅修丽 | A kind of concrete subtracts jelly |
| CN110818308A (en) * | 2019-11-04 | 2020-02-21 | 广州四极科技有限公司 | Concrete synergist with high stone powder content and preparation method thereof |
| CN111423154A (en) * | 2020-03-03 | 2020-07-17 | 深圳市三绿科技有限公司 | Concrete glue reducing agent and preparation method thereof |
| CN111423147A (en) * | 2020-05-26 | 2020-07-17 | 南通瑞特建筑材料有限公司 | Concrete glue reducing agent and preparation method thereof |
| CN111960716A (en) * | 2020-09-01 | 2020-11-20 | 沧兴建材沧州有限公司 | Concrete synergistic glue reducing agent and preparation method thereof |
| CN112279550A (en) * | 2020-10-14 | 2021-01-29 | 武汉塔牌华轩新材料科技有限公司 | Concrete synergist and preparation method thereof |
| CN113105149A (en) * | 2021-05-17 | 2021-07-13 | 成都砼星新材料有限公司 | Concrete glue reducing agent and preparation method and application method thereof |
-
2021
- 2021-10-22 CN CN202111230840.3A patent/CN115368053B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446115A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | Concrete synergist |
| CN105036587A (en) * | 2015-09-06 | 2015-11-11 | 山东宏艺科技股份有限公司 | High-performance concrete synergist and preparing method thereof |
| CN105293983A (en) * | 2015-11-06 | 2016-02-03 | 湖北工业大学 | High-adaptability glue reducing agent for concrete |
| CN109438627A (en) * | 2018-09-12 | 2019-03-08 | 湖北工业大学 | A kind of method that both sexes polyethers polycarboxylate compound preparation subtracts jelly |
| CN110482897A (en) * | 2019-07-19 | 2019-11-22 | 傅修丽 | A kind of concrete subtracts jelly |
| CN110818308A (en) * | 2019-11-04 | 2020-02-21 | 广州四极科技有限公司 | Concrete synergist with high stone powder content and preparation method thereof |
| CN111423154A (en) * | 2020-03-03 | 2020-07-17 | 深圳市三绿科技有限公司 | Concrete glue reducing agent and preparation method thereof |
| CN111423147A (en) * | 2020-05-26 | 2020-07-17 | 南通瑞特建筑材料有限公司 | Concrete glue reducing agent and preparation method thereof |
| CN111960716A (en) * | 2020-09-01 | 2020-11-20 | 沧兴建材沧州有限公司 | Concrete synergistic glue reducing agent and preparation method thereof |
| CN112279550A (en) * | 2020-10-14 | 2021-01-29 | 武汉塔牌华轩新材料科技有限公司 | Concrete synergist and preparation method thereof |
| CN113105149A (en) * | 2021-05-17 | 2021-07-13 | 成都砼星新材料有限公司 | Concrete glue reducing agent and preparation method and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115368053A (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109574538B (en) | Concrete glue reducing agent and preparation process and application method thereof | |
| CN110818308B (en) | Concrete synergist with high stone powder content and preparation method thereof | |
| CN111072366B (en) | Inorganic grouting material capable of stopping open water and reinforcing structure and preparation method and application thereof | |
| CN111943561A (en) | Polycarboxylic acid high-performance pumping agent and production process thereof | |
| CN110655346A (en) | Machine-made sand regulator and preparation method thereof | |
| CN108585592A (en) | A kind of Concrete synergist and preparation method thereof | |
| CN112358224A (en) | Concrete glue reducing agent and preparation method and application thereof | |
| EP3321242A1 (en) | Cement additive, cement composition, raw material for cement additive | |
| CN111662053A (en) | Polypropylene fiber concrete and preparation method thereof | |
| CN111960716A (en) | Concrete synergistic glue reducing agent and preparation method thereof | |
| CN110590223A (en) | Concrete segregation resisting agent and concrete | |
| CN107417153B (en) | Concrete synergist and preparation method thereof | |
| CN111302695A (en) | Composite early strength water reducing agent and preparation method and application thereof | |
| CN104844060A (en) | Novel concrete synergist and preparation process thereof | |
| CN112456915A (en) | Low-shrinkage and high-performance concrete prepared from full-machine-made sand and preparation process thereof | |
| CN114133163B (en) | Concrete admixture and preparation method thereof | |
| CN111635200A (en) | High-strength anti-permeability anti-freezing concrete and preparation method thereof | |
| CN111574105A (en) | Environment-friendly composite early strength water reducing agent and preparation method thereof | |
| CN114368946A (en) | Mineral admixture hydraulic concrete | |
| CN115368053B (en) | Reinforced gel reducing auxiliary agent and preparation method thereof | |
| CN113105149A (en) | Concrete glue reducing agent and preparation method and application method thereof | |
| JP2010215479A (en) | Cement composition | |
| CN111393062A (en) | Concrete synergist and preparation method thereof | |
| CN112062486B (en) | Low-temperature cement and preparation method thereof | |
| CN114656189A (en) | Bi-component early-strength wet-mixed masonry mortar additive and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |