CN114560643A - Concrete admixture, preparation method and application thereof - Google Patents
Concrete admixture, preparation method and application thereof Download PDFInfo
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- CN114560643A CN114560643A CN202210241675.XA CN202210241675A CN114560643A CN 114560643 A CN114560643 A CN 114560643A CN 202210241675 A CN202210241675 A CN 202210241675A CN 114560643 A CN114560643 A CN 114560643A
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- extract
- kidney bean
- beet pulp
- root nodule
- bean root
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- 239000004567 concrete Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 235000016068 Berberis vulgaris Nutrition 0.000 claims abstract description 58
- 241000335053 Beta vulgaris Species 0.000 claims abstract description 58
- 244000046052 Phaseolus vulgaris Species 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 20
- 238000007873 sieving Methods 0.000 claims abstract description 16
- 238000002791 soaking Methods 0.000 claims abstract description 16
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims abstract description 11
- 239000011162 core material Substances 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 229920005610 lignin Polymers 0.000 claims abstract description 8
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 8
- 239000006228 supernatant Substances 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 7
- 239000003513 alkali Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000010298 pulverizing process Methods 0.000 claims abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000003337 fertilizer Substances 0.000 claims 1
- 238000000227 grinding Methods 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000979 retarding effect Effects 0.000 abstract description 4
- 230000015271 coagulation Effects 0.000 abstract description 2
- 238000005345 coagulation Methods 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 19
- 230000007797 corrosion Effects 0.000 description 18
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000004568 cement Substances 0.000 description 7
- 239000003112 inhibitor Substances 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical class [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- -1 flavonoid Chemical class 0.000 description 1
- 229930003935 flavonoid Natural products 0.000 description 1
- 150000002215 flavonoids Chemical class 0.000 description 1
- 235000017173 flavonoids Nutrition 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/12—Multiple coating or impregnating
-
- 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
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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 discloses a concrete admixture, a preparation method and application thereof, wherein the concrete admixture comprises 30-35% by mass of beet pulp extract, 55-60% by mass of kidney bean root nodule extract and 10% by mass of adhesive; the method for obtaining the beet pulp extract comprises the following steps: pretreating the beet pulp by using sodium sulfite to remove lignin in the beet pulp, crushing and sieving, adding an acid solution for soaking and acidolysis, and finally drying and pulverizing to obtain a beet pulp extract; the method for obtaining the kidney bean root nodule extract comprises the following steps: cleaning and drying kidney bean root nodule parts, crushing and sieving to obtain kidney bean root nodule powder, adding an alkali solution for soaking, centrifuging to obtain a supernatant, and finally drying to prepare powder to obtain a kidney bean root nodule extract; during preparation, the beet residue extract is used as a wall material, the kidney bean root nodule extract is used as a core material, and the core material is wrapped by the wall material through an adhesive, so that the concrete admixture is obtained. The invention has the functions of retarding coagulation and rust resistance, natural and pollution-free raw materials and simple preparation method.
Description
Technical Field
The invention relates to a building material, in particular to a concrete admixture, a preparation method and application thereof.
Background
In recent years, engineering accidents caused by too fast setting speed, too short setting time and poor durability of concrete materials have become endless. The addition of the rust inhibitor is an effective means for controlling the corrosion of the steel bars and enhancing the durability, and meanwhile, in order to delay the coagulation of the concrete, a retarder needs to be added, so that the cost is high. On the other hand, the conventional corrosion inhibitors comprise three types of inorganic, organic and hybrid corrosion inhibitors, wherein the inorganic corrosion inhibitor and the organic corrosion inhibitor are gradually eliminated due to factors such as carcinogenicity, toxicity and high environmental requirements, and the hybrid corrosion inhibitors which are nontoxic and have high corrosion resistance are more applied, but the synthesis of the hybrid corrosion inhibitors is complex and difficult to be applied in large scale in industrial production.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an environment-friendly concrete admixture with retarding and rust-resisting functions, a second aim of the invention is to provide a preparation method of the concrete admixture, and a third aim of the invention is to provide application of the concrete admixture.
The technical scheme is as follows: the concrete admixture comprises, by mass, 30-35% of a beet pulp extract, 55-60% of a kidney bean root nodule extract and 10% of a binder; the method for obtaining the beet pulp extract comprises the following steps: pretreating the beet pulp by using sodium sulfite to remove lignin in the beet pulp, crushing and sieving, adding an acid solution for soaking and acidolysis, and finally drying and pulverizing to obtain a beet pulp extract; the method for obtaining the kidney bean root nodule extract comprises the following steps: cleaning and drying kidney bean root nodule parts, crushing and sieving to obtain kidney bean root nodule powder, adding an alkali solution for soaking, centrifuging to obtain a supernatant, and finally drying to prepare powder to obtain the kidney bean root nodule extract.
In the invention, the two agricultural and sugar-making wastes of the beet pulp and the kidney bean root nodule are used as main raw materials, and the raw materials are natural and pollution-free, environment-friendly and low in cost. The beet pulp extract has stronger activity effect on the surfaces of cement particles and new phases of hydration products, can be adsorbed on the surfaces of the cement particles to form a layer of indissolvable film, plays a role of barrier to the hydration of the cement particles, and delays the hydration of the cement and the formation of a slurry structure; in addition, the cellulose in the beet pulp extract can also enhance the internal bonding of concreteThe effect of the force. The extract of root nodule of kidney bean contains abundant heterocyclic compounds such as flavonoid, which contains polar atoms or groups such as N, O, S, P, which can react with Fe2+The empty d track generates interaction of electron supply and electron receiving, and is effectively adsorbed on the surface of the steel bar, so that the electrochemical corrosion reaction of the steel bar is slowed down. Therefore, the concrete admixture of the invention has the composite action of initial retardation and later-stage rust resistance.
The invention also provides a preparation method of the concrete admixture, which comprises the following steps:
(1) obtaining a beet pulp extract: pretreating the beet pulp by using sodium sulfite to remove lignin in the beet pulp, crushing and sieving, adding an acid solution for soaking and acidolysis, and finally drying and pulverizing to obtain a beet pulp extract;
(2) obtaining a kidney bean root nodule extract: cleaning and drying kidney bean root nodule parts, crushing and sieving to obtain kidney bean root nodule powder, adding an alkali solution for soaking, centrifuging to obtain a supernatant, and finally drying to prepare powder to obtain a kidney bean root nodule extract;
(3) weighing the raw materials according to the weight of claim 1;
(4) the concrete admixture is obtained by using the beet pulp extract as a wall material, using the kidney bean root nodule extract as a core material and wrapping the core material by the wall material through an adhesive.
The preparation process is simple, after the additive is added into the concrete, the effect of the retarding component in the wall material is exerted firstly, and after the wall material is fully exerted and the state of the concrete is stable, the rust-resisting component in the core material gradually seeps out of the adhesive, so that the durability of the concrete is continuously improved.
In step (1), nitric acid with the concentration of 0.1mol/L is adopted as the acid solution, and B ml of nitric acid is added to A g of beet pulp, wherein B is 3A.
Further, in the step (2), the alkali solution is a sodium hydroxide solution with a concentration of 0.7mol/L, and D ml of the sodium hydroxide solution is distributed to C g of kidney bean root nodule, wherein D is 7C.
Further, the adhesive employs MIEX resin.
Further, in the steps (1) and (2), vacuum drying is adopted during powder preparation by drying.
Further, the preparation method also comprises the step (5) of screening the concrete admixture by a centrifugal method to obtain admixture particles with the diameter of 1-3 mm.
The invention also provides an application of the concrete admixture, the concrete admixture is prepared by the preparation method, the concrete admixture is externally doped before the concrete is mixed by adding water, and the doping amount is 5-7% of the mass of the cementing material.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: (1) the raw materials belong to agricultural waste recycling, and the method is environment-friendly and low in cost; (2) the admixture can play a composite role in retarding the concrete at the initial stage and improving the durability at the later stage; (3) the invention is especially suitable for being used in the chloride environment, and improves the durability of the reinforced concrete structure, such as various seaports, sea-crossing bridges and other marine concrete projects.
Detailed Description
The present invention will be described in further detail below.
Example 1
The concrete admixture comprises 30% by mass of a beet pulp extract, 60% by mass of a kidney bean root nodule extract and 10% by mass of a binder. The method for obtaining the beet pulp extract comprises the following steps: taking 300g of beet pulp, pretreating the beet pulp by using sodium sulfite to remove lignin in the beet pulp, crushing and sieving the beet pulp, adding 900ml of nitric acid of 0.1mol/L for soaking and acidolysis, and finally drying the beet pulp in vacuum at 60 ℃ for 2h to prepare powder to obtain the beet pulp extract. The method for obtaining the kidney bean root nodule extract comprises the following steps: the method comprises the steps of cleaning and drying 300g of kidney bean root nodule, crushing and sieving to obtain kidney bean root nodule powder, adding 2100ml of 0.7mol/L sodium hydroxide solution for soaking at 10000r/min, centrifuging for 3min, taking supernatant, and finally drying in vacuum at 70 ℃ for 3.5h to prepare powder to obtain the kidney bean root nodule extract. The method comprises the steps of taking a beet pulp extract as a wall material, wrapping a kidney bean root nodule extract as a core material by using an adhesive to obtain a concrete admixture, and screening admixture particles with the diameter of 2-3 mm by using a centrifugal method.
Example 2
The concrete admixture comprises 32% by mass of the beet pulp extract, 58% by mass of the kidney bean root nodule extract and 10% by mass of the binder. The method for obtaining the beet pulp extract comprises the following steps: taking 300g of beet pulp, pretreating the beet pulp by using sodium sulfite to remove lignin in the beet pulp, crushing and sieving the beet pulp, adding 900ml of nitric acid of 0.1mol/L for soaking and acidolysis, and finally drying the beet pulp in vacuum at 60 ℃ for 2h to prepare powder to obtain the beet pulp extract. The method for obtaining the kidney bean root nodule extract comprises the following steps: the method comprises the steps of cleaning and drying 300g of kidney bean root nodule, crushing and sieving to obtain kidney bean root nodule powder, adding 2100ml of 0.7mol/L sodium hydroxide solution for soaking at 10000r/min, centrifuging for 3min, taking supernatant, and finally drying in vacuum at 70 ℃ for 3.5h to prepare powder to obtain the kidney bean root nodule extract. The method comprises the steps of taking a beet residue extract as a wall material, wrapping a kidney bean root nodule extract as a core material by using an adhesive to obtain a concrete admixture, and screening admixture particles with the diameter of 1-2 mm by using a centrifugal method.
Example 3
The concrete admixture comprises, by mass, 35% of a beet pulp extract, 55% of a kidney bean root nodule extract and 10% of a binder. The method for obtaining the beet pulp extract comprises the following steps: taking 300g of beet pulp, pretreating the beet pulp by using sodium sulfite to remove lignin in the beet pulp, crushing and sieving the beet pulp, adding 900ml of nitric acid of 0.1mol/L for soaking and acidolysis, and finally drying the beet pulp in vacuum at 60 ℃ for 2h to prepare powder to obtain the beet pulp extract. The method for obtaining the kidney bean root nodule extract comprises the following steps: the method comprises the steps of cleaning and drying 300g of kidney bean root nodule, crushing and sieving to obtain kidney bean root nodule powder, adding 2100ml of 0.7mol/L sodium hydroxide solution for soaking at 10000r/min, centrifuging for 3min, taking supernatant, and finally drying in vacuum at 70 ℃ for 3.5h to prepare powder to obtain the kidney bean root nodule extract. The method comprises the steps of taking a beet pulp extract as a wall material, wrapping a kidney bean root nodule extract as a core material by using an adhesive to obtain a concrete admixture, and screening admixture particles with the diameter of 1-3 mm by using a centrifugal method.
The working effect of the concrete admixture of the invention in concrete is verified by tests below.
Test one, strength test
The formed fine aggregate concrete test piece has the size of 40mm by 160mm, the cement is 42.5-grade ordinary portland cement, the water cement ratio is 0.43, the ash sand ratio is 0.46, the concrete admixture is respectively added with 5 percent, 6 percent and 7 percent (relative to the mass of the cement), the blank control without the admixture is set, and the compressive strength of 3d, 7d and 28d is measured after forming. The test results are shown in Table 1.
TABLE 1 concrete compression Strength test results
As can be seen from Table 1, the compressive strength of the fine aggregate concrete was not significantly changed by the addition of the concrete admixtures of examples 1, 2 and 3, indicating that the addition of the concrete admixtures did not affect the strength of the concrete.
Experiment two, simulation concrete pore solution reinforcing bar sample electrochemistry impedance test
Cutting the HPB235 steel bar with the diameter of 10mm into short bars with the length of 10mm, sealing the columnar side surfaces of the short bars by using epoxy resin, and sequentially polishing the short bars to a mirror surface by using No. 600, No. 1000 and No. 2000 metallographic abrasive paper by using the end surfaces as working surfaces to obtain the required working electrode. A saturated calcium hydroxide solution containing 2.5% NaCl was prepared. The concrete admixture prepared in the three embodiments is added into a saturated calcium hydroxide solution containing 2.5% of NaCl according to the solution amount of 6%, the polished steel bar is placed in the saturated calcium hydroxide solution, the saturated calcium hydroxide solution is sealed, and electrochemical tests of self-corrosion potential and corrosion current density are carried out after 24 hours. Meanwhile, the corrosion performance of the sample by the 2.5% NaCl-containing saturated calcium hydroxide solution without the additive was tested as a control.
The test result shows that the corrosion potential and the corrosion current density of the blank control group are-514 mV vs SCE and 1.921 muA/cm respectively2. The corrosion potentials of the samples to which the concrete admixtures of examples 1, 2 and 3 were added were shifted in positive levels to-419 mV vs SCE, -433mV vs SCE and-441 mV vs SCE, respectively, as compared with the blank control group. The corrosion current density is also obviously reduced, respectivelyIs 0.107 muA/cm2、0.165μA/cm2、0.182μA/cm2. The corrosion potential of the sample added with the concrete admixture of the invention is shifted positively, which shows that the corrosion trend of the steel bar is reduced; the decrease of the corrosion current density indicates the decrease of the corrosion rate of the steel bar. The result shows that the concrete admixture has obvious rust resistance effect.
Claims (8)
1. A concrete admixture is characterized in that: by mass, the fertilizer comprises 30-35% of beet pulp extract, 55-60% of kidney bean root nodule extract and 10% of adhesive; the method for obtaining the beet pulp extract comprises the following steps: pretreating the beet pulp by using sodium sulfite to remove lignin in the beet pulp, crushing and sieving, adding an acid solution for soaking and acidolysis, and finally drying and pulverizing to obtain a beet pulp extract; the method for obtaining the kidney bean root nodule extract comprises the following steps: cleaning and drying kidney bean root nodule parts, crushing and sieving to obtain kidney bean root nodule powder, adding an alkali solution for soaking, centrifuging to obtain a supernatant, and finally drying to prepare powder to obtain the kidney bean root nodule extract.
2. A method for producing the concrete admixture according to claim 1, characterized by comprising: the method comprises the following steps:
(1) obtaining a beet pulp extract: pretreating the beet pulp by using sodium sulfite to remove lignin in the beet pulp, crushing and sieving, adding an acid solution for soaking and acidolysis, and finally drying and pulverizing to obtain a beet pulp extract;
(2) obtaining a kidney bean nodule extract: cleaning and drying kidney bean root nodule parts, crushing and sieving to obtain kidney bean root nodule powder, adding an alkali solution for soaking, centrifuging to obtain a supernatant, and finally drying to prepare powder to obtain a kidney bean root nodule extract;
(3) weighing the raw materials according to the weight of claim 1;
(4) the concrete admixture is obtained by using the beet pulp extract as a wall material, using the kidney bean root nodule extract as a core material and wrapping the core material by the wall material through an adhesive.
3. The method of claim 2, wherein: in the step (1), nitric acid with the concentration of 0.1mol/L is adopted as the acid solution, A g of beet pulp is mixed with B ml of nitric acid, and B is 3A.
4. The method of claim 2, wherein: in the step (2), the aqueous alkali is 0.7mol/L sodium hydroxide solution, D ml sodium hydroxide solution is distributed to C g kidney bean root nodule, and D is 7C.
5. The method of claim 2, wherein: the adhesive is MIEX resin.
6. The method of claim 2, wherein: in the steps (1) and (2), vacuum drying is adopted during drying and powdering.
7. The production method according to any one of claims 2 to 6, characterized in that: and (5) screening the concrete admixture by a centrifugal method to obtain admixture particles with the diameter of 1-3 mm.
8. The application of the concrete admixture is characterized in that: the concrete admixture is prepared by the preparation method of any one of claims 2 to 7, and is externally mixed before the concrete is mixed by adding water, wherein the mixing amount is 5 to 7 percent of the mass of the cementing material.
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| CN202210241675.XA CN114560643A (en) | 2022-03-11 | 2022-03-11 | Concrete admixture, preparation method and application thereof |
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| CN202210241675.XA CN114560643A (en) | 2022-03-11 | 2022-03-11 | Concrete admixture, preparation method and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB654767A (en) * | 1947-03-17 | 1951-06-27 | Danske Sukkerfab | Improvements relating to the production of jellyfying pectins |
| CN108516726A (en) * | 2018-04-24 | 2018-09-11 | 常州五荣化工有限公司 | A kind of preparation method of reinforcing steel bar corrosion inhibitor |
| CN109437636A (en) * | 2018-11-13 | 2019-03-08 | 河海大学 | A kind of reinforcing steel bar corrosion inhibitor and methods for making and using same fallen leaves using discarded plant |
-
2022
- 2022-03-11 CN CN202210241675.XA patent/CN114560643A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB654767A (en) * | 1947-03-17 | 1951-06-27 | Danske Sukkerfab | Improvements relating to the production of jellyfying pectins |
| CN108516726A (en) * | 2018-04-24 | 2018-09-11 | 常州五荣化工有限公司 | A kind of preparation method of reinforcing steel bar corrosion inhibitor |
| CN109437636A (en) * | 2018-11-13 | 2019-03-08 | 河海大学 | A kind of reinforcing steel bar corrosion inhibitor and methods for making and using same fallen leaves using discarded plant |
Non-Patent Citations (3)
| Title |
|---|
| D R GUSTI* ETC.: "Exploration of coffee bean husks waste as an eco-environmentally friendly corrosion inhibitor on mild steel in sulphuric acid solutions", 《THE 4TH INTERNATIONAL SYMPOSIUM ON GREEN TECHNOLOGY FOR VALUE CHAINS 2019》 * |
| 王何柱 等: "不同花色芸豆种皮酚类化合物组成及抗氧化活性", 《食品科学》 * |
| 陈泊韬: "甜菜渣成分在浓硝酸和酶作用下的变化", 《现代食品科技》 * |
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