CN109437636A - A kind of reinforcing steel bar corrosion inhibitor and methods for making and using same fallen leaves using discarded plant - Google Patents
A kind of reinforcing steel bar corrosion inhibitor and methods for making and using same fallen leaves using discarded plant Download PDFInfo
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- CN109437636A CN109437636A CN201811346482.0A CN201811346482A CN109437636A CN 109437636 A CN109437636 A CN 109437636A CN 201811346482 A CN201811346482 A CN 201811346482A CN 109437636 A CN109437636 A CN 109437636A
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- corrosion inhibitor
- steel bar
- reinforcing steel
- fallen leaves
- bar corrosion
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/61—Corrosion inhibitors
-
- 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
Abstract
The present invention proposes a kind of reinforcing steel bar corrosion inhibitor and its methods for making and using same fallen leaves using discarded plant, this is the organic solvent soaking extraction liquid of Platanus acerifolia leaf using the reinforcing steel bar corrosion inhibitor that discarded plant is fallen leaves.The present invention is Platanus acerifolia tree fallen leaves using the reinforcing steel bar corrosion inhibitor raw material of discarded plant fallen leaves, raw material sources are extensive and are waste, reinforcing steel bar corrosion inhibitor preparation process is simply nontoxic, the green reinforcing steel bar corrosion inhibitor of friendly is saved for environment, it is low in cost, easy to use, can be directly added into concrete, effectively increase the resistance rust ability of reinforcement in concrete, and then improve the service life of reinforced concrete structure, sale easy to spread and industrial industrialization, have a extensive future.
Description
Technical field
The present invention relates to building material technical fields, concretely relate to a kind of reinforcing bar resistance using discarded plant fallen leaves
Become rusty agent and its methods for making and using same.
Background technique
Currently, China has numerous reinforced concrete structures or will be on active service under bar in chlorine salt solution, such as bridge spanning the sea, large size
Tide-block sluice, port and pier etc..In this Service Environment rich in villaumite, steel bar corrosion is to cause Due To Corrosion in Reinforced Concrete Structures
The main reason for destruction.Reinforced concrete structure durability problem caused by corroding is very serious, gently then influences the use of structure
Property and durability, it is heavy then reduce structural bearing capacity, structural failure is even resulted in, huge economic loss is caused.In this context,
The resistance rust measure of armored concrete is studied to ensuring mentioning for the safe operation of reinforced concrete works and durability under bar in chlorine salt solution
It rises and has a very important significance.
Applying corrosion inhibitor is one of reinforced concrete structure durability measure for improvement maximally efficient in Practical Project, at me
State has obtained widely studying and applying.Corrosion inhibitor type is abundant, but corrosion inhibitor currently on the market is more with inorganic, You Jihuo
Based on mixed chemicals, have that high expensive, toxic, the problems such as cause serious pollution to the environment.With ecological environment in recent years
Problem highlights, and people gradually recognize the importance of environmental protection and sustainable development, " green is saved environmentally friendly " material
The forward position that material has become engineering material research field now is popular.Green how is made and saves environmentally friendly reinforcing steel bar corrosion inhibitor,
It is one and the problem of thinking deeply is made.
Platanus acerifolia is Platanaceae plane plant, is commonly called as oriental plane tree, is Platanaceae deciduous tree, former
Is produced from Europe, it is now wide to plant in the whole world.There are cultivation in China various regions from the south Beijing, are especially more with each city of lower Yangtze
See, is excellent shade tree.Whenever autumn and winter, various lots of withered and yellow fallen leaves seriously affect the appearance of the city and environmental sanitation.?
The processing method of fallen leaves is burned in more place selection, is had seriously polluted the environment, how Huan Bao processing Platanus acerifolia leaf is
One urgent problem to be solved.
Summary of the invention
To solve the above problems, the present invention proposes a kind of reinforcing steel bar corrosion inhibitor using discarded plant fallen leaves and its preparation and answers
It is energy conservation and environmental protection, low in cost, easy to use with method, the resistance rust ability of reinforcement in concrete can be effectively improved.
Technical solution: the present invention proposes a kind of reinforcing steel bar corrosion inhibitor fallen leaves using discarded plant, this is fallen using discarded plant
The reinforcing steel bar corrosion inhibitor of leaf is the organic solvent soaking extraction liquid of Platanus acerifolia leaf.
Further, the organic solvent is dehydrated alcohol.
The present invention also proposes a kind of preparation method of reinforcing steel bar corrosion inhibitor using discarded plant fallen leaves, includes the following steps:
S1: Platanus acerifolia leaf is eluted with water；
S2: it by Platanus acerifolia leaf naturally dry clean in S1, and is blended with grinder machinery to powdered；
S3: Platanus acerifolia leaf powder obtained in S2 is mixed and stirred for uniformly and is stood with organic solvent；Two ball
The mass ratio of plane tree leaf powder and organic solvent is 5%-20%；
S4: the pH to 8.5- of Platanus acerifolia leaf powder and organic solvent mixed liquor obtained in acid or alkali adjusting S3 is used
12。
Further, the temperature of drying of Platanus acerifolia leaf is 10-40 DEG C in the step S2, flash-off time 0.5-
2h。
Further, organic solvent is dehydrated alcohol in the step S3.
Further, time of repose is more than or equal to 24 hours in the step S3.
Further, the acid that pH is adjusted in the step S4 is nitric acid or phosphoric acid, and alkali is sodium hydroxide or potassium hydroxide.
The present invention also proposes the application method of the reinforcing steel bar corrosion inhibitor using discarded plant fallen leaves, described to be fallen using discarded plant
The reinforcing steel bar corrosion inhibitor of leaf, which is incorporated into armored concrete, to be used, and incorporation is cement cementitious material quality in armored concrete
1%-4%。
The utility model has the advantages that the present invention is Platanus acerifolia tree fallen leaves using the reinforcing steel bar corrosion inhibitor raw material of discarded plant fallen leaves, it is former
Expect from a wealth of sources and be waste, reinforcing steel bar corrosion inhibitor preparation process is simply nontoxic, and the green reinforcing bar resistance of friendly is saved for environment
It becomes rusty agent, it is low in cost, easy to use, can be directly added into concrete, the resistance rust ability of reinforcement in concrete is effectively increased, into
And improve the service life of reinforced concrete structure.
Detailed description of the invention
Fig. 1 is in test environment Cl-The reinforcing bar electrode of test sample 1, test sample 2 and control group when concentration 0.1mol/L
Electrochemical impedance spectroscopy；
Fig. 2 is the reinforcing bar corrosion potential of test sample 1, test sample 2 and control group with Cl-Add concentration trend chart；
Fig. 3 is the corrosion electric current density of the reinforcing bar of test sample 1, test sample 2 and control group with Cl-Add concentration variation tendency
Figure.
Specific embodiment
The present invention proposes that a kind of reinforcing steel bar corrosion inhibitor fallen leaves using discarded plant, the corrosion inhibitor are Platanus acerifolia leaf
Dehydrated alcohol leaching liquid.Platanus acerifolia is Platanaceae plane plant, is commonly called as oriental plane tree, is that Platanaceae fallen leaves are tall
Wood is rich in flavone compound in Platanus acerifolia, and separately containing organic matters such as a small amount of triterpene, steroidal, Coumarins, these have
Machine object is rich in a large amount of amino, phthalein amino, nitrogen base, hydrogen-based isoreactivity group, and active group, which plays, anti-oxidant, anticorrosive etc. to be had
Effect effect, has the chemical basis well as reinforcing steel bar corrosion inhibitor.
A kind of preparation method of the reinforcing steel bar corrosion inhibitor using discarded plant fallen leaves, includes the following steps:
S1: the Platanus acerifolia leaf of acquisition is washed with clean water；
S2: by Platanus acerifolia leaf naturally dry 1h clean in S1, drying temperature is 20 DEG C, and is blended with grinder machinery
It is extremely powdered；
S3: adding absolute ethyl alcohol and stirring uniformly and stand, and time of repose is for 24 hours；The Platanus acerifolia leaf powder and anhydrous second
The mass ratio of alcohol is 5%-20%；
S4: pH value is adjusted to 11.5 with phosphoric acid and sodium hydroxide solution after filtering, obtains required reinforcing steel bar corrosion inhibitor.
It is mixed by being added to using the reinforcing steel bar corrosion inhibitor of discarded plant fallen leaves according to different additive amounts made from the above method
Test sample 1, test sample 2 and control group is made in solidifying soil simulated solution, test sample 1, test sample 2 and control group are carried out
Corrosive nature test, and then anticorrosion performance of the corrosion inhibitor of Different adding amount to reinforcing bar is evaluated, sample preparation is as follows:
A, test sample 1 is prepared
The bar dowel stick for being 5mm at length by the HPB235 reinforcing bar cutting of Φ 12mm, and by the column side epoxy of bar dowel stick
Resin seal is polishing to mirror surface with aluminium oxide abrasive paper for metallograph using end face as working face step by step；Saturated calcium hydroxide solution is prepared,
PH value is adjusted to 11.5 with phosphoric acid and sodium hydroxide solution；The reinforcing bar for wearing into mirror light is placed in above-mentioned saturated calcium hydroxide solution
In, so that concrete simulated solution be made；The reinforcing steel bar corrosion inhibitor of discarded plant fallen leaves will be utilized to press 3%(volume made from the above method
Percentage) it is added in the saturated calcium hydroxide solution of concrete simulated solution, test sample 1 is made, test sample 1 is sealed,
And carry out corrosive nature test.
B, test sample 2 is prepared
The bar dowel stick for being 5mm at length by the HPB235 reinforcing bar cutting of Φ 12mm, and by the column side epoxy of bar dowel stick
Resin seal is polishing to mirror surface with aluminium oxide abrasive paper for metallograph using end face as working face step by step；Saturated calcium hydroxide solution is prepared,
PH value is adjusted to 11.5 with phosphoric acid and sodium hydroxide solution；The reinforcing bar for wearing into mirror light is placed in above-mentioned saturated calcium hydroxide solution
In, so that concrete simulated solution be made；The reinforcing steel bar corrosion inhibitor of discarded plant fallen leaves will be utilized to press 1%(volume made from the above method
Percentage) it is added in the saturated calcium hydroxide solution of solidifying native simulated solution, test sample 2 is made, test sample 2 is sealed, and
Carry out corrosive nature test.
C, control group is prepared
The bar dowel stick for being 5mm at length by the HPB235 reinforcing bar cutting of Φ 12mm, and by the column side epoxy of bar dowel stick
Resin seal is polishing to mirror surface with aluminium oxide abrasive paper for metallograph using end face as working face step by step；Saturated calcium hydroxide solution is prepared,
PH value is adjusted to 11.5 with phosphoric acid and sodium hydroxide solution；The reinforcing bar for wearing into mirror light is placed in above-mentioned saturated calcium hydroxide solution
In, so that concrete simulated solution be made；Discarded plant fallen leaves are not utilized in the concrete simulated solution plus made from the above method
Reinforcing steel bar corrosion inhibitor, the sample are as a control group, same to carry out corrosive nature test.
Using PARSTAT2273 electrochemical workstation, test macro uses typical three-electrode system, and (i.e. reinforcing bar is work
Make electrode, platinum electrode is auxiliary electrode, and saturated calomel electrode is as reference electrode), to test sample 1, test sample 2 and control
Electrochemical impedance spectroscopy, corrosion potential, the corrosion electric current density of group are tested, and then to the corrosion inhibitor of Different adding amount to steel
The anticorrosion performance of muscle is evaluated, and specific experimental condition is as follows:
(1) electrochemical impedance spectroscopy is the exchange potential wave for applying the different small amplitude of a frequency to electrochemical system, and measurement is handed over
The ratio (impedance that this ratio is system) of galvanic electricity gesture and current signal with variation or the impedance of sine wave freuqency phase
And then the machines such as electrode material, solid electrolyte, conducting polymer and corrosion protection are analyzed with the variation of sine wave freuqency in angle
Reason.Electrochemical impedance spectroscopy test uses perturbation amplitude for the sinusoidal voltage of 10mV in this experiment, and the frequency range of test is
10mHz ~ 100KHz is fitted arrangement to institute's measured data using ZSimpWin software.
Test result such as Fig. 1.Fig. 1 is Nyquist figure, is a kind of representation of electrochemical impedance spectroscopy, the impedance Z of electrode
It is made of real part Z ' and imaginary part Z ", i.e. Z=Z '+j Z ", Nyquist figure is with impedance real part Z ' for abscissa, with impedance
Imaginary part-Z " is ordinate mapping, and arc radius is bigger, that is, polarization resistance is bigger, and corrosion-resistant better, arc radius is smaller,
Namely polarization resistance is smaller, corrosion-resistant poorer.
Three curves are illustrated respectively in test environment Cl in Fig. 1-When concentration 0.1mol/L, test sample 1, test sample 2
Maximum with the sweep of the reinforcing bar electrode electro Chemical impedance spectrum of control group, test sample 1, the polarization resistance of reinforcing bar is maximum, resistance to
Corrosivity is best, and the sweep of test sample 2 is taken second place, and the sweep of control group is minimum, it is seen then that into concrete simulated solution
Be separately added into 3% and 1%(percent by volume) using discarded plant fallen leaves reinforcing steel bar corrosion inhibitor significantly improve the corrosion resistant of reinforcing bar
Corrosion has resistance rust effect well to reinforcing bar using the reinforcing steel bar corrosion inhibitor of discarded plant fallen leaves.
(2) dynamic potential polarization curve test scanning current potential is -0.015V ~ 0.015V of opposite open circuit potential, sweep speed
For 0.2mV/s.In order to obtain preferable effect, the electrokinetic potential test under each experimental condition is at least in triplicate.
Test result such as Fig. 2.Three curves respectively represent the reinforcing bar of test sample 1, test sample 2 and control group in Fig. 2
Natural corrosion potential is with Cl-Concentration trend chart is added, natural corrosion potential is thermodynamically to characterize material in spy
Determine the parameter of corrosion resistance trend in medium, Ecorr negative sense value is bigger, and display reinforcing bar is more perishable, as shown in Fig. 2, with Cl-
The increase of concentration, the reinforcing bar natural corrosion potential of test sample 1, test sample 2 and control group are in becoming of gradually reducing
Gesture, and the reinforcing bar natural corrosion potential of test sample 1 reduces at least than initial value, natural corrosion potential negative sense value is most
Small, the reinforcing bar natural corrosion potential negative sense value of test sample 2 is taken second place, the reinforcing bar natural corrosion potential negative sense value of control group
Maximum illustrates that the corrosion resistance of 1 reinforcing bar of test sample is most strong, 3%(percent by volume in test sample 1) utilize discarded plant
The reinforcing steel bar corrosion inhibitor of fallen leaves is substantially reduced reinforcing bar by Cl-The rate of corrosion, 1%(percent by volume in test sample 2) utilization it is useless
The reinforcing steel bar corrosion inhibitor for abandoning plant defoliation reduces reinforcing bar by Cl to a certain degree-The rate of corrosion, 2 reinforcing bar of test sample it is corrosion-resistant
Property is taken second place, and the corrosion resistance of control group reinforcing bar is worst.
(3) natural corrosion potential is by Ecorr vs in 2273 type electrochemical workstation PowerCorr module of PARSTAT
Time standard form is tested.
Test result such as Fig. 3.Three curves respectively represent the reinforcing bar of test sample 1, test sample 2 and control group in Fig. 3
Corrosion electric current density icorrWith Cl-Concentration trend chart is added, corrosion electric current density icorr is bigger, indicates the corrosion of reinforcing bar
Speed is faster, as shown in figure 3, with Cl-The reinforcement corrosion current density icorr numerical value of the increase of concentration, test sample 1 is minimum
And numerical value illustrates that the corrosion rate of 1 reinforcing bar of test sample is minimum, the corrosion resistance of reinforcing bar is most strong, test sample 1 without significant change
Middle 3%(percent by volume) the reinforcing steel bar corrosion inhibitor using discarded plant fallen leaves be substantially reduced the corrosion rate of reinforcing bar；With Cl-
The increase of concentration, 2 reinforcement corrosion current density icorr numerical value of test sample becomes larger, but 2 reinforcement corrosion current density of test sample
Still be below the reinforcement corrosion current density icorr of control group, it is seen that 1%(percent by volume in test sample 2) utilization it is discarded
The reinforcing steel bar corrosion inhibitor of plant defoliation also reduces the corrosion rate of reinforcing bar to a certain degree.
Claims (8)
1. a kind of reinforcing steel bar corrosion inhibitor fallen leaves using discarded plant, it is characterised in that: this is hindered using the reinforcing bar that discarded plant is fallen leaves
Become rusty the organic solvent soaking extraction liquid that agent is Platanus acerifolia leaf.
2. the reinforcing steel bar corrosion inhibitor according to claim 1 fallen leaves using discarded plant, it is characterised in that: the organic solvent
For dehydrated alcohol.
3. a kind of preparation method for the reinforcing steel bar corrosion inhibitor fallen leaves described in claim 1-2 any one using discarded plant,
It is characterized in that: including the following steps:
S1: Platanus acerifolia leaf is eluted with water；
S2: it by Platanus acerifolia leaf naturally dry clean in S1, and is blended with grinder machinery to powdered；
S3: Platanus acerifolia leaf powder obtained in S2 is mixed and stirred for uniformly and is stood with organic solvent；Two ball
The mass ratio of plane tree leaf powder and organic solvent is 5%-20%；
S4: the pH to 8.5- of Platanus acerifolia leaf powder and organic solvent mixed liquor obtained in acid or alkali adjusting S3 is used
12。
4. the preparation method of the reinforcing steel bar corrosion inhibitor according to claim 3 using discarded plant fallen leaves, it is characterised in that: institute
The temperature of drying for stating Platanus acerifolia leaf in step S2 is 10-40 DEG C, flash-off time 0.5-2h.
5. the preparation method of the reinforcing steel bar corrosion inhibitor according to claim 3 using discarded plant fallen leaves, it is characterised in that: institute
Stating organic solvent in step S3 is dehydrated alcohol.
6. the preparation method of the reinforcing steel bar corrosion inhibitor according to claim 3 using discarded plant fallen leaves, it is characterised in that: institute
Time of repose in step S3 is stated to be more than or equal to 24 hours.
7. the preparation method of the reinforcing steel bar corrosion inhibitor according to claim 3 using discarded plant fallen leaves, it is characterised in that: institute
Stating and adjusting the acid of pH in step S4 is nitric acid or phosphoric acid, and alkali is sodium hydroxide or potassium hydroxide.
8. the application method of the reinforcing steel bar corrosion inhibitor according to claim 1 using discarded plant fallen leaves, it is characterised in that: institute
It states to be incorporated into armored concrete using the reinforcing steel bar corrosion inhibitor of discarded plant fallen leaves and use, and incorporation is water in armored concrete
The 1%-4% of earth rubber gel material quality.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748819A (en) * | 2020-06-18 | 2020-10-09 | 河海大学 | Rust inhibitor prepared from phosphorus-containing sludge, and preparation method and application thereof |
| CN113149502A (en) * | 2021-04-30 | 2021-07-23 | 贵州石博士科技股份有限公司 | Method for preparing reinforced concrete rust inhibitor by using eucalyptus tenuifolius leaves |
| CN113896447A (en) * | 2021-11-08 | 2022-01-07 | 河海大学 | Reinforcing steel bar rust inhibitor using legume rhizobium and preparation method and application thereof |
| CN113955964A (en) * | 2021-11-08 | 2022-01-21 | 河海大学 | Steel bar rust inhibitor prepared from corm barley, and preparation method and application thereof |
| CN114560643A (en) * | 2022-03-11 | 2022-05-31 | 盐城工学院 | Concrete admixture, preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748819A (en) * | 2020-06-18 | 2020-10-09 | 河海大学 | Rust inhibitor prepared from phosphorus-containing sludge, and preparation method and application thereof |
| CN113149502A (en) * | 2021-04-30 | 2021-07-23 | 贵州石博士科技股份有限公司 | Method for preparing reinforced concrete rust inhibitor by using eucalyptus tenuifolius leaves |
| CN113896447A (en) * | 2021-11-08 | 2022-01-07 | 河海大学 | Reinforcing steel bar rust inhibitor using legume rhizobium and preparation method and application thereof |
| CN113955964A (en) * | 2021-11-08 | 2022-01-21 | 河海大学 | Steel bar rust inhibitor prepared from corm barley, and preparation method and application thereof |
| CN113955964B (en) * | 2021-11-08 | 2022-09-23 | 河海大学 | Steel bar rust inhibitor prepared from corm barley, and preparation method and application thereof |
| CN114560643A (en) * | 2022-03-11 | 2022-05-31 | 盐城工学院 | Concrete admixture, preparation method and application thereof |
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