CN111606597A - Polycarboxylic acid series concrete water reducing agent and production method thereof - Google Patents
Polycarboxylic acid series concrete water reducing agent and production method thereof Download PDFInfo
- Publication number
- CN111606597A CN111606597A CN202010400190.1A CN202010400190A CN111606597A CN 111606597 A CN111606597 A CN 111606597A CN 202010400190 A CN202010400190 A CN 202010400190A CN 111606597 A CN111606597 A CN 111606597A
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- mother liquor
- concrete
- parts
- polycarboxylic acid
- water reducing
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- 239000004567 concrete Substances 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000003638 reducing agent Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000002253 acid Substances 0.000 title claims description 27
- 239000012452 mother liquor Substances 0.000 claims abstract description 83
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- UPMFZISCCZSDND-JJKGCWMISA-M Sodium gluconate Chemical compound [Na+].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O UPMFZISCCZSDND-JJKGCWMISA-M 0.000 claims abstract description 14
- 229940005574 Sodium gluconate Drugs 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000176 sodium gluconate Substances 0.000 claims abstract description 14
- 235000012207 sodium gluconate Nutrition 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 28
- 239000011259 mixed solution Substances 0.000 claims description 14
- 230000001603 reducing Effects 0.000 claims description 11
- 229940051841 POLYOXYETHYLENE ETHER Drugs 0.000 claims description 5
- VBPSVYDSYVJIPX-UHFFFAOYSA-N pent-2-en-2-ol Chemical compound CCC=C(C)O VBPSVYDSYVJIPX-UHFFFAOYSA-N 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- AKHNMLFCWUSKQB-UHFFFAOYSA-L Sodium thiosulphate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Tris Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 2
- 239000000654 additive Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 230000000996 additive Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001932 seasonal Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
- C04B24/06—Carboxylic acids; Salts, anhydrides or esters thereof containing hydroxy groups
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/308—Slump-loss preventing agents
Abstract
The invention discloses a polycarboxylic concrete water reducer and a production method thereof, wherein the polycarboxylic concrete water reducer is prepared from the following raw materials in parts by weight: mother liquor A10-18 parts, mother liquor B3-7 parts, air entraining agent 0.07-0.1 part, defoaming agent 0.07-0.1 part, water 20-35 parts and sodium gluconate 0.1-1 part. The invention relates to a polycarboxylic concrete water reducer and a production method thereof, wherein a mother liquor A and a mother liquor B are mixed according to different proportions according to the change of cement and ground materials and are circularly stirred at normal temperature, different amounts of sodium gluconate are added according to the change of seasons to adjust the setting time of concrete, and an air entraining agent (0.5-1.5 per mill) and a defoaming agent (0.5-1 per mill) are added according to the mixing condition of the mixing proportion of indoor concrete to improve the workability of the concrete, improve the loss of concrete slump with time, improve the durability of the concrete and improve the appearance quality of the concrete.
Description
Technical Field
The invention relates to the technical field of chemical preparations for building materials, in particular to a polycarboxylic concrete water reducer and a production method thereof.
Background
The concrete is used as one of the main materials in the construction industry on a large scale, and the water reducing agent in the prior art only has the function of quickly reducing the moisture so as to quickly condense the concrete;
the situation of using a single variety of additives in concrete is rare, the concrete gradually develops towards high efficiency and multiple functions, the purpose of compounding the additives is to simultaneously meet the requirements of the concrete on various performances, and the combined action among all compounding components generates a 'superposition effect', more than two concrete additives produced by different manufacturers are mixed together according to different proportions, the working performance and the durability of the concrete are the effects which cannot be achieved by any additive, and the effect is the compounding effect of the additives.
The existing concrete water reducing agent has certain defects when in use, and various problems of concrete cannot be solved by singly using one additive. If the water-reducing admixture is used independently, although the water-reducing effect is good, the slump loss of concrete is easy to occur, and the pouring is not facilitated. For concrete with special requirements, such as steel pipe jacking concrete, the admixture is required to have a large water reducing rate to ensure that the fluidity of the concrete is large, and a long retardation time is required. Particularly, a slow-release water reducing agent is required to be added during construction in summer, and the concrete slump can be slightly increased within a certain time without being reduced within 2 hours or even longer.
Disclosure of Invention
The invention aims to solve the problems that the water reducing admixture is used independently, although the water reducing effect is good, the slump loss of concrete is easy to occur, and the pouring is not facilitated; for concrete with special requirements, such as steel pipe jacking concrete, the admixture is required to have a large water reducing rate to ensure that the fluidity of the concrete is large, and a long retardation time is required; the slow-release water reducing agent is required to be added during construction in summer, and the concrete slump does not decrease but can slightly increase within a certain time within 2 hours or even longer, so that the polycarboxylic acid concrete water reducing agent and the production method thereof are provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the polycarboxylic acid type concrete water reducing agent is prepared from the following raw materials in parts by weight: mother liquor A10-18 parts, mother liquor B3-7 parts, air entraining agent 0.07-0.1 part, defoaming agent 0.07-0.1 part and water 20-35 parts.
Further, 0.1-1 part of sodium gluconate is also included according to the parts by weight.
Further, the mother liquor A is polycarboxylic acid water-reducing mother liquor and is mainly prepared from the following raw materials in parts by weight: 200 parts of methyl butenol polyoxyethylene ether 175-.
Further, the mother liquor B is polycarboxylic acid slump-retaining mother liquor, and comprises 8-12kg of triethanolamine, 15-25kg of anhydrous sodium sulphate, 5-10kg of sodium thiosulfate and 25-30kg of urea.
A production method of a polycarboxylic acid concrete water reducing agent comprises the following steps:
the method comprises the following steps: 10-18 parts of mother liquor A and 3-7 parts of mother liquor B are taken and put into a metering bucket for stirring;
step two: then 0.07-0.1 part of air entraining agent, 0.07-0.1 part of defoaming agent and a small amount of water are taken and stirred in a stirring tank until the mixture is uniform, and the mixed solution is thrown into the metering tank in the step one;
step three: and D, adding water into the metering barrel containing the mother liquor and the mixed solution in the step two until the volume is 1000kg, and uniformly stirring.
Further, the production method of the polycarboxylic acid concrete water reducer in high-temperature summer seasons comprises the following specific steps:
s1: 10-18 parts of mother liquor A and 3-7 parts of mother liquor B are taken and put into a metering bucket for stirring;
s2: adding 0.1-1 part of sodium gluconate into the stirring tank;
s3: then 0.07-0.1 part of air entraining agent, 0.07-0.1 part of defoaming agent and a small amount of water are added into a stirring tank in S2 and stirred uniformly, and the mixed solution is pumped into a measuring tank in S1;
s4: adding water into a metering barrel containing the mother liquor and the mixed solution in the S3 until the volume is 1000kg, and uniformly stirring.
Furthermore, the air entraining agent (0.5-1.5 per mill) and the defoaming agent (0.5-1 per mill) are added in the second step to improve the workability of the concrete.
Further, the mother liquor A and the mother liquor B added in the step one are mixed according to different proportions according to the changes of cement and ground materials and are circularly stirred at normal temperature, the proportion of the mother liquor A to the mother liquor B in the cement process is 3:1, and the proportion of the mother liquor A to the mother liquor B in the ground material process is 2: 1.
Compared with the prior art, the invention provides a polycarboxylic concrete water reducer and a production method thereof, and the polycarboxylic concrete water reducer has the following beneficial effects:
according to the invention, the mother liquor A and the mother liquor B are mixed according to different proportions according to the change of cement and ground materials and are circularly stirred at normal temperature, compared with the traditional single externally-added additive, the water reducing effect is better, the concrete slump loss is not easy to appear, the pouring is facilitated, different amounts of sodium gluconate are added according to the change of seasonal temperature to adjust the setting time of the concrete, particularly, a slow-release water reducing agent is not required to be added during the construction in summer, the concrete slump is reduced within 2 hours or even longer, and can be reduced slightly within a certain time, and then an air entraining agent (0.5-1.5 thousandth) and a defoaming agent (0.5-1 thousandth) are added according to the mixing proportion of indoor concrete to improve the workability of the concrete, improve the durability of the concrete and improve the appearance quality of the concrete.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
The polycarboxylic acid type concrete water reducing agent is prepared from the following raw materials in parts by weight: the water reducing agent comprises 14 parts of mother liquor A, 5 parts of mother liquor B, 0.5 part of sodium gluconate, 0.09 part of air entraining agent, 0.09 part of defoaming agent and 30 parts of water, wherein the mother liquor A is polycarboxylic acid water reducing mother liquor and is mainly prepared from the following raw materials in parts by weight: 200 parts of methyl butenol polyoxyethylene ether 175-;
the production method of the polycarboxylic acid concrete water reducer under the normal temperature condition comprises the following specific steps:
the method comprises the following steps: putting 350Kg of mother liquor A and 125Kg of mother liquor B into a metering tank for stirring, mixing the added mother liquor A and the added mother liquor B according to different proportions according to the changes of cement and ground materials, and circularly stirring at normal temperature, wherein the proportion of the mother liquor A to the mother liquor B in cement is 3:1, and the proportion of the mother liquor A to the mother liquor B in ground materials is 2: 1;
step two: then 0.5kg of air entraining agent, 0.5kg of defoaming agent and a small amount of water are taken and stirred in a stirring tank until the mixture is uniform, the mixed solution is thrown into the measuring tank in the step one, and the air entraining agent (0.5 per thousand to 1.5 per thousand) and the defoaming agent (0.5 per thousand to 1 per thousand) are added to improve the workability of the concrete;
step three: and D, adding water into the metering barrel containing the mother liquor and the mixed solution in the step two until the volume is 1000kg, and uniformly stirring.
Example 2
The polycarboxylic acid type concrete water reducing agent is prepared from the following raw materials in parts by weight: the water reducing agent comprises 14 parts of mother liquor A, 5 parts of mother liquor B, 0.5 part of sodium gluconate, 0.09 part of air entraining agent, 0.09 part of defoaming agent and 30 parts of water, wherein the mother liquor A is polycarboxylic acid water reducing mother liquor and is mainly prepared from the following raw materials in parts by weight: 200 parts of methyl butenol polyoxyethylene ether 175-;
the production method of the polycarboxylic acid concrete water reducer in high-temperature seasons in summer comprises the following specific steps:
s1: putting 350Kg of mother liquor A and 125Kg of mother liquor B into a metering tank for stirring, mixing the added mother liquor A and the added mother liquor B according to different proportions according to the changes of cement and ground materials, and circularly stirring at normal temperature, wherein the proportion of the mother liquor A to the mother liquor B in cement is 3:1, and the proportion of the mother liquor A to the mother liquor B in ground materials is 2: 1;
s2: adding 35kg of sodium gluconate into the stirring tank;
s3: then adding 0.5kg of air entraining agent, 0.5kg of defoaming agent and a small amount of water into a stirring tank in S2, stirring uniformly, pouring the mixed solution into a metering tank in S1, adding sodium gluconate for adjusting the setting time of concrete, and adding 0.5-1.5 per mill of air entraining agent and 0.5-1 per mill of defoaming agent to improve the workability of the concrete;
s4: adding water into a metering barrel containing the mother liquor and the mixed solution in the S3 until the volume is 1000kg, and uniformly stirring.
Control group
The polycarboxylic acid type concrete water reducing agent is prepared from the following raw materials in parts by weight: the water reducing agent comprises 14 parts of mother liquor A, 5 parts of mother liquor B, 0.5 part of sodium gluconate, 0.09 part of air entraining agent, 0.09 part of defoaming agent and 30 parts of water, wherein the mother liquor A is polycarboxylic acid water reducing mother liquor and is mainly prepared from the following raw materials in parts by weight: 200 parts of methyl butenol polyoxyethylene ether 175-;
the production method of the polycarboxylic acid concrete water reducer in high-temperature seasons in summer comprises the following specific steps:
s1: putting 350Kg of mother liquor A and 125Kg of mother liquor B into a metering tank for stirring, mixing the added mother liquor A and the added mother liquor B according to different proportions according to the changes of cement and ground materials, and circularly stirring at normal temperature, wherein the proportion of the mother liquor A to the mother liquor B in cement is 3:1, and the proportion of the mother liquor A to the mother liquor B in ground materials is 2: 1;
s2: then 0.5kg of air entraining agent, 0.5kg of defoaming agent and a small amount of water are taken and stirred in a stirring tank until the mixture is uniform, the mixed solution is thrown into a measuring tank in S1, the added sodium gluconate is used for adjusting the setting time of the concrete, and the air entraining agent (0.5 per thousand to 1.5 per thousand) and the defoaming agent (0.5 per thousand to 1 per thousand) are added to improve the workability of the concrete;
s3: adding water into a metering barrel containing the mother liquor and the mixed solution in the S2 until the volume is 1000kg, and uniformly stirring.
The concrete water reducing agents produced by the examples 1 and 2 and the control group are applied to concrete and various groups of data are detected, and the obtained data are shown in the following table:
according to the invention, the mother liquor A and the mother liquor B are mixed according to different proportions according to the change of cement and ground materials and are circularly stirred at normal temperature, compared with the traditional single externally-added additive, the water reducing effect is better, the concrete slump loss is not easy to appear, the pouring is facilitated, different amounts of sodium gluconate are added according to the change of seasonal temperature to adjust the setting time of the concrete, particularly, a slow-release water reducing agent is not required to be added during the construction in summer, the concrete slump is reduced within 2 hours or even longer, and can be reduced slightly within a certain time, and then an air entraining agent (0.5-1.5 thousandth) and a defoaming agent (0.5-1 thousandth) are added according to the mixing proportion of indoor concrete to improve the workability of the concrete, improve the durability of the concrete and improve the appearance quality of the concrete.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The polycarboxylic concrete water reducer is characterized by being prepared from the following raw materials in parts by weight: mother liquor A10-18 parts, mother liquor B3-7 parts, air entraining agent 0.07-0.1 part, defoaming agent 0.07-0.1 part and water 20-35 parts.
2. The polycarboxylic acid type concrete water reducing agent according to claim 1, characterized by further comprising 0.1-1 part by weight of sodium gluconate.
3. The polycarboxylic acid water reducing agent for concrete as claimed in claim 1, wherein the mother liquor A is polycarboxylic acid water reducing mother liquor, and is prepared from the following raw materials in parts by weight: 200 parts of methyl butenol polyoxyethylene ether 175-.
4. The polycarboxylic acid concrete water reducer according to claim 1, wherein the mother liquor B is polycarboxylic acid slump-retaining mother liquor comprising 8-12kg of triethanolamine, 15-25kg of anhydrous sodium sulphate, 5-10kg of sodium thiosulfate and 25-30kg of urea.
5. A production method of a polycarboxylic acid concrete water reducing agent is characterized by comprising the following steps of:
the method comprises the following steps: 10-18 parts of mother liquor A and 3-7 parts of mother liquor B are taken and put into a metering bucket for stirring;
step two: then 0.07-0.1 part of air entraining agent, 0.07-0.1 part of defoaming agent and a small amount of water are taken and stirred in a stirring tank until the mixture is uniform, and the mixed solution is thrown into the metering tank in the step one;
step three: and D, adding water into the metering barrel containing the mother liquor and the mixed solution in the step two until the volume is 1000kg, and uniformly stirring.
6. The production method of the polycarboxylic acid type concrete water reducing agent according to claim 5, characterized in that the production method of the polycarboxylic acid type concrete water reducing agent in high temperature seasons in summer comprises the following specific steps:
s1: 10-18 parts of mother liquor A and 3-7 parts of mother liquor B are taken and put into a metering bucket for stirring;
s2: adding 0.1-1 part of sodium gluconate into the stirring tank;
s3: then 0.07-0.1 part of air entraining agent, 0.07-0.1 part of defoaming agent and a small amount of water are added into a stirring tank in S2 and stirred uniformly, and the mixed solution is pumped into a measuring tank in S1;
s4: adding water into a metering barrel containing the mother liquor and the mixed solution in the S3 until the volume is 1000kg, and uniformly stirring.
7. The method for producing the polycarboxylic acid type concrete water reducing agent according to claim 5, characterized in that the air entraining agent (0.5-1.5%) and the defoaming agent (0.5-1%) are added in the second step to improve the workability of concrete.
8. The method for producing the polycarboxylic acid type concrete water reducer according to claim 5, wherein the mother liquor A and the mother liquor B added in the step one are mixed according to different proportions according to changes of cement and ground materials and are circularly stirred at normal temperature, the proportion of the mother liquor A to the mother liquor B in cement is 3:1, and the proportion of the mother liquor A to the mother liquor B in ground materials is 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010400190.1A CN111606597A (en) | 2020-05-13 | 2020-05-13 | Polycarboxylic acid series concrete water reducing agent and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010400190.1A CN111606597A (en) | 2020-05-13 | 2020-05-13 | Polycarboxylic acid series concrete water reducing agent and production method thereof |
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| CN202010400190.1A Pending CN111606597A (en) | 2020-05-13 | 2020-05-13 | Polycarboxylic acid series concrete water reducing agent and production method thereof |
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Application publication date: 20200901 |