KR101360262B1 - Eco-friendly cold resistance substance composite with strength nature for concrete - Google Patents

Abstract

The present invention relates to an eco-friendly concrete anti-corrosive agent containing coarse stiffness, and more particularly, it is applied to cold-heavy concrete in a liquid form including acetate or formate and chitosan and water of alkali or alkaline earth metals to prevent initial copper damage and strength. It is possible to promote and to reduce the environmental load is related to the concrete deodorant. The present inventors have found that the combination of alkali or alkaline earth metal formate or acetate is appropriately applied to concrete and exhibits anti-corrosion property and roughness. As a result of further studies, the role of potassium acetate or potassium formate The role of calcium formate is important for this important and roughness, and it has been found that chitosan needs to be added to prevent salt recrystallization and to increase storage stability. Properly blended with these compounds, the effect is increased, and anti-rusting and coarseness is achieved. In addition to these, calcium formate and potassium silicate can be added as main components, and as an auxiliary component, a fluidizing agent, a corrosion inhibitor, a pH adjusting agent, etc. Etc. can be added to improve performance.

Description

ECO-FRIENDLY COLD RESISTANCE SUBSTANCE COMPOSITE WITH STRENGTH NATURE FOR CONCRETE}

The present invention relates to a concrete anti-corrosive composition containing the roughness, and more particularly, to prevent the initial freeze by applying to the concrete in the form of a liquid containing alkali or alkaline earth metal acetate or formate and chitosan and water It is possible to promote and to reduce the environmental load is related to the concrete deodorant.

Concrete curing is the work to maintain the necessary temperature and humidity in the early stage of relatively rapid hydration, and to protect the required strength after pouring to prevent harmful effects such as load and impact. Great care is needed as it has a great impact on air and concrete durability. In weather conditions where the average daily temperature is below 4 ° C, the condensation hardening reaction is very delayed and concrete may freeze not only during the night or dawn, but also during the day. In the construction of Korea-China concrete, appropriate measures should be taken for materials, compounding, rubbing, conveying, pruning, compacting, curing, formwork and copper barring to ensure that the required quality is obtained so that the concrete does not freeze. The construction method of Hanzhong concrete requires simple precautions and warmth at 0-4 ℃, and it is necessary to heat water or water and aggregate at -3-0 ℃. Below -3 ℃, concrete and concrete constructions such as heating water and aggregates to increase the temperature of the concrete, as well as maintaining the concrete at the required temperature by proper insulation and quenching, are needed. When concrete freezes at the early stage of hardening, not only does the chemical reaction of cement proceed well, but even after curing at an appropriate temperature, adverse effects on strength, durability, and watertightness also occur in the future. Therefore, at low temperature, do not freeze at the early stage of condensation hardening, have sufficient resistance to freezing and thawing until the temperature rises after completion of curing, and have sufficient strength for the expected load at each stage of construction. It must be cured to have the required strength, durability and watertightness as a finished structure.

Chloride-based anti-freeze was used for low temperature construction. However, chloride-free anti-freeze is currently used due to problems such as corrosion of concrete. Expected to increase the strength as the quantity decreased by using a reducing agent such as formalin condensate of sulfonated melamine or formalin condensate of aromatic hydrocarbon sulfonic acid, but there is a problem that the effect of reducing the unit quantity by such a reducing agent is not great at low temperatures. Difficulty in pouring due to reduced fluidity during use. Triethanol amines, thiocyanates, sulfates of alkali or alkaline earth metals, nitrates or nitrites, or urea are used to some extent, but they are problematic because they lead to degradation of the basic performance of concrete. Among these, in many cases, quickness and the like are caused, making it difficult to maintain workability and transportability. In the case of organic deodorant, it is known to have a disadvantage of decreasing initial strength by delaying the hydration rate of cement.In particular, when lignin sulfonic acid-based deactivator is used in a large amount of 1% or more, the coagulation delay of cement concrete is large and poly Carbonic acid-based high-performance sensitizer is a problem that should be improved because there is a characteristic that the initial strength development within one day is delayed.

Therefore, even at low temperature, the anti-fogging property is maintained, there is still a need for a anti-fog agent that can maintain the roughness and workability.

Technical Challenge

The present invention has been made to solve the conventional problems as described above, an object of the present invention is to prevent freezing during low-temperature construction of concrete, to increase the initial strength, to provide a good workability for concrete concrete.

Technical Solution

The present inventors have conducted studies to solve the above problems, and found that when appropriate combinations of formates or acetates of alkali metals or alkaline earth metals are applied to concrete, they exhibit rust resistance and roughness. In further studies, the role of potassium acetate or potassium formate is important for anti-logging properties, and the role of calcium formate is important for roughness, and chitosan is added to prevent salt recrystallization and increase storage stability. I found out that there is a need. When appropriately blended, the effects are increased, and anti-logging properties and roughness are achieved.

In addition to these, calcium formate, potassium silicate, and the like may be further added as main components, and fluidizing agents and corrosion inhibitors may be added as auxiliary components to improve performance.

More specifically, at least one polysaccharide selected from the group consisting of at least one organic acid salt selected from the group consisting of formic acid and acetate salts of alkali metals and alkaline earth metals and chitin chitosan from which acetyl groups of chitin are partially removed; It is a non-chloride-based concrete activator containing water, the organic acid salt may be a group consisting of potassium acetate, potassium formate, sodium acetate, sodium formate, calcium acetate, calcium formate, magnesium acetate, magnesium formate And more preferably the selected organic acid salt is potassium formate, calcium formate. The potassium formate 10 to 50% by weight, calcium formate 5 to 15% by weight, chitosan 0.01 to 5% by weight, and the remaining water may be included, in addition, may include calcium acetate, wherein calcium acetate 5 to 15% by weight is preferred, in addition the selected organic acid salt may further comprise potassium silicate, preferably 2-10% by weight of the potassium silicate. In addition, fluidizing agents, corrosion inhibitors and pH adjusting agents can be added to improve the function. Potassium acetate may be used in place of potassium formate, or a mixture of potassium formate and potassium acetate may be used instead of potassium formate.

The present invention can prevent the corrosion of concrete by excluding chloride, and the materials used are environmentally friendly, and concrete curing is possible in cold areas below -30 ℃ ~ -40 ℃, which is the case of outdoor curing in sub-zero region Because it does not affect the setting time (initialization and termination) and the aging change (slump and air volume) due to its excellent freezing point drop characteristics, it does not generate the east sea during the concrete curing period by maintaining the necessary conditions for concrete curing. In addition, the initial compressive strength in the sub-zero region is not only very good, but also exhibits excellent compressive strength expression characteristics in long-term age, and the decrease in fluidity due to the addition of the anti-rust agent is not so large, the construction efficiency is high.

1 is a photograph showing the degree of recrystallization of the addition of chitosan and the addition of aqueous formate solution.

Best Mode for Carrying Out the Invention

Hereinafter, the present invention will be described in more detail.

In the present invention, formate or acetate of an alkali metal or alkaline earth metal is used as a main component. To this is added at least one polysaccharide (hereinafter typically referred to as chitosan) selected from the group consisting of chitin, chitosan and chitin chitosan, in which the acetyl groups of the chitin are partially removed, to prevent them from recrystallization in aqueous solution. Chitosan removes the odor of the composition, prevents recrystallization and plays an effective role in the adsorption of trace heavy metals. The organic acid salt may be selected from the group consisting of potassium acetate (PA), potassium formate (PF), sodium acetate, sodium formate, calcium acetate (CA), calcium formate (CF), magnesium acetate, and magnesium formate. have. The aqueous solution of the salts is generally very low freezing may be vaguely thought that it can be used as a snow removing agent, a defrosting agent, etc. through a suitable treatment, but actually shows a difference in various performance. Potassium formate has a large amount of soluble in water, so the effect of lowering is great, whereas calcium formate does not have a large amount of soluble in water. In addition, calcium formate was found to play a significant role in increasing the strength of concrete.

The anti-rust agent according to the invention comprises 10 to 50% by weight potassium formate, 5 to 15% by weight calcium formate, 0.01 to 5% by weight chitosan, and the balance of water. When the amount of potassium formate is less than 10% by weight, the effect of freezing point is low, so it is difficult to achieve the desired anti-freezing effect when applied to concrete, and when it is more than 50% by weight, it is not easily dissolved in water. Calcium formate has anti-fogging effect, but more important effect is strength improvement when applied to cold concrete. In case of less than 5% by weight, strength improvement is insignificant, and when it exceeds 15% by weight, it is not easy to dissolve in water. to be. In addition, when the chitosan is less than 0.01% by weight, the role of preventing recrystallization cannot be sufficiently expected, and in the case of more than 5% by weight, the viscosity of the liquid anti-corrosive agent is increased to decrease the degree of dispersion during mixing with concrete. .

1 is a comparative picture showing the degree of recrystallization of the addition of chitosan and the addition of the aqueous solution of potassium formate and calcium formate according to the present invention. If chitosan was not added, recrystallization occurred, but it was confirmed that no crystal was formed from the addition of chitosan. Crystal formation in the present anti-rust agent not only greatly impairs the storage stability of the composition, but also reduces the anti-rust and roughness of the present invention. The formation of crystals would have an effect of increasing the freezing point of the antifreeze solution, which can be expected to reduce the function of the antifreeze agent.

The anti-rust agent of the present invention may further comprise 5 to 15% by weight of calcium acetate, the remaining amount is filled with water. Calcium acetate enhances the anti-freezing effect by further strengthening the freezing point drop due to competition with formate ions at the time of dissolution. As the size of acetate ions and formate ions are competing similarly, the dipole force between particles increases as they approach each other, which leads to stronger collimative properties, leading to an increase in solute particles per unit area, resulting in a much more pronounced freezing point phenomenon. This is because it has a structure closer to "molten matter," that is, a melting material, not a solution, rather than an aqueous solution by simple mixing. In other words, in an aqueous solution state, the structure has a structure close to molten matter, resulting in high colligative properties. Another phenomenon of freezing point drop is the competitive hydrolysis of anions. The competitive metal salt hydrolysis properties of anions in acetate and formate hinder the development of solid crystalline phases, which is expected It provides a mechanism for lowering freezing points far beyond expected values. Eventually, the competitive tendency of acetate and formate ions to react with water has the effect of delaying the tendency of water molecules to turn into crystalline structures (CRYSTALLINE STRUCTURE) to become ice. If the calcium acetate is less than 5% by weight, the above effect is insignificant. If the calcium acetate is more than 15% by weight, the amount of potassium formate to be dissolved in water should be relatively reduced.The effect of lowering the freezing point of calcium acetate is less than that of potassium formate. The range is appropriate because the anti-logging property may be somewhat degraded.

The combined use of alkali metal salts of potassium silicate (PS) is known to enhance anti-logging properties. Potassium silicate chemically reacts with the steel frame of concrete to give excellent corrosion resistance, abrasion resistance, and impact resistance of the steel frame, so it has excellent performance even in harsh corrosive environments, and has excellent initial workability and adhesive strength to strengthen the bonding strength of aggregates used. There is a characteristic. The use of potassium silicate has the effect of reducing the use of anti-foaming effect and strength and other admixtures. The anti-rust agent of the present invention may further comprise 2 to 10% by weight of potassium silicate and the remainder may be filled with water. In the case of less than 2% by weight, the synergy with alkali metal salts is insufficient, and in the case of more than 10% by weight, the amount of other organic acid salts in the total solution is limited, so the above range is appropriate.

In the present invention, instead of the potassium formate, a mixture of potassium acetate or potassium acetate and potassium formate can be used in the above ratio. Potassium acetate and potassium formate have very high solubility and have excellent anti-fogging effect. However, potassium acetate can dissolve up to about 70% by weight, so the use of potassium acetate can be increased when a large anti-logging property is required in very harsh outdoor environment. However, potassium acetate is preferable to use potassium formate because the crude steel performance is slightly lower than that of potassium formate.

The anti-rust agent of the present invention is prepared in the form of an aqueous solution, the content of the metal salt in the aqueous solution is difficult to exceed approximately 60% by weight. Potassium acetate alone was dissolved up to approximately 50% by weight, and the solubility tended to increase slightly due to the addition of chitosan, and the total metal salt content increased up to 60% by weight when calcium formate was added. When the content of the total metal salt is small, the anti-logging property is inferior, and in too many cases, since it exceeds the range dissolved in water, preferably about 35 to 55% by weight is preferable.

The antifreeze agent of the present invention may have a slightly lower fluidity as the metal salt content is higher, but it is not a cause for concern. When the fluidity is slightly lowered, the fluidizing agent may be added when the concrete is blended, but the strength of the fluidizing agent may be lowered when the fluidizing agent is added.

It is preferable that the concrete anti-corrosive agent of this invention contains a corrosion inhibitor. Usually, any material that can be used for metal corrosion protection can be used without limitation, but benzotriazole, sodium benzoate, sodium silicate, and the like are particularly preferable. The benzotriazole is preferably 0.05 to 0.5% by weight, the sodium benzoate is 0.05 to 1.5% by weight, and the sodium silicate is preferably 0.01 to 0.5% by weight. If the amount of the corrosion inhibitor is small, the effect is insignificant, and if more than necessary enter the side effect due to the oxidation of the corrosion inhibitor.

It is preferable that the concrete anti-rust agent of this invention contains a pH adjuster. This is because the amount dissolved at an appropriate pH varies depending on the composition used. Triethanolamine, sodium hydroxide, potassium hydroxide and the like may be used as the pH adjusting agent, and the amount thereof is preferably 0.05 to 0.3% by weight. The above range may vary somewhat depending on the composition used.

The compositions of the concrete mover of the present invention also have the advantage of low load on the environment because they are close to the final stage of decomposition.

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, the present invention will be described in more detail with reference to examples. Embodiments of the present invention described below are only specific examples of the present invention, and thus the scope of the present invention should not be understood as being limited by the following embodiments.

Example 1 (comparison experiment with chitosan addition and no addition)

Evaluation of the organic matter (formic acid) residue removal function and recrystallization suppression property when chitosan (average molecular weight 20,000, deacetylation degree 80%) was added to the aqueous solution of 50% potassium formate at a weight ratio of 0.5 wt% and not added. It was. In the recrystallization evaluation, the above two samples induced recrystallization while slowly evaporating the solvent water in room temperature air, and evaluated the recrystallization after 10 days. The deodorant properties of chitosan were evaluated by sensory evaluation of each sample. As a result of sensory evaluation, it was found that the addition of chitosan significantly reduced the formic acid specific odor compared to the case without addition. In addition, as shown in the photograph of FIG. 1, it was confirmed that the recrystallization of potassium formate was remarkably improved compared to the case where chitosan was added, thereby improving the stability of the liquid snow removing agent. The amine group, which is a functional group contained in the chitosan molecule, is believed to have a chemical bond with formate to reduce the specific odor caused by volatilization of formic acid and to suppress recrystallization.

Example 2 (freezing point change depending on the point and dilution rate of the antifreeze agent)

Due to the freezing point drop effect of the anti-rust agent of the present invention it is possible to hydrate the concrete even at low temperatures. Therefore, the freezing point of the anti-corrosive composition of the present invention was measured and showed a level of approximately -65 ℃ to -55 ℃. In the freezing point measurement, 50g of each sample was added to an ultra-cold freezer (produced by Ilsin Lab), and the freezing was observed while lowering to 85 ° C.

30 wt% of calcium chloride was -36.6 占 폚, and -31.1 占 폚 of 50 wt% of ethylene glycol. Potassium acetate and potassium formate were dissolved in a considerable amount, and the freezing point was most effective. Calcium formate alone was difficult to dissolve a large amount, which was -25.6 占 폚 for 12% by weight of calcium formate. Therefore, it is considered that it is preferable to carry out by adding another organic acid salt based on potassium acetate or potassium formate. The freezing temperature is quite low, which seems to be sufficient for the concrete's anti-freeze. Therefore, in the case of the anti-rust agent of the present invention seems to be possible in the construction of concrete even in the cold situation of -30 ℃ to -40 ℃.

The first composition and the last composition of ethylene glycol was viewed as a stock solution and diluted with the addition of water, and the freezing point according to its dilution rate is as follows.

In the case of the antifreeze agent of the present invention, even when diluted, it shows low freezing point characteristics, whereas in the case of ethylene glycol, it is difficult to function as the antifreeze agent when diluted to some extent. This is compared to the other anti-freezing agent of the present invention can be released even when diluted or relatively small amount is used, the cryoprotective performance is very excellent.

Example 3 (composition of antifreeze composition)

The present antifreeze composition was made in the ratio as shown in the following table and the unit is weight%.

It is preferable to form a metal salt by dissolving it in water, adding chitosan to it, and stirring it at about 100-1500 rpm at the temperature of 10-30 degreeC according to a kind. In the case of different kinds, they may be dissolved and formed in water, but they may be put together and stirred. When added together and stirred, the total amount of salt that could be dissolved was greater.

Example 4 Application of Spraying Agent

In order to examine the performance of the anti-rust agent of the present invention, concrete and mortar tests were performed by applying conditions of 1%, 3%, and very extreme conditions for the concrete binder, and 15% for the yield. In addition, the test was performed by correcting the amount of added antifreeze with respect to the total unit amount in order to correct the change in fluidity due to the increase of the unit amount with the addition of the antifreeze agent.

In the case of the mortar test, the test was conducted according to the compressive strength test method of KS F 5105 hydraulic cement mortar. In the case of concrete, the initial flow characteristics and the change over time were measured. In addition, the performance of the cured concrete according to the curing temperature was examined. The slump test was carried out by the air chamber pressure method of KS F 2402, and the measurement of the air volume was conducted according to the KS F 2409 method.

Evaluation items are as follows.

In the case of freezing curing outside the sub-zero region, the compressive strength was measured after 1 hour at room temperature in consideration of the change in strength due to freezing.

Measurement of heat of hydration

The mix of mortar and concrete to measure the heat of hydration is as follows, and tested at room temperature and -10 ° C, respectively.

Formulation of Maltar

OPC is ordinary portland cement, W is water. Standard type sensitizer applied 0.5% to OPC, deodorant was applied 3.0%, standard is the case that does not include the deodorant of the present invention.

Mixing of concrete

BFS is blast furnace slag, FA is fly ash, G is coarse aggregate, S is fine aggregate (sand), AD is standard water reducing agent, and deodorant is 3.0% applied to binder.

The anti-rust agent was applied to the anti-freeze agents 1 to 9 of Example 3.

In the case of room temperature, the overall hydration reaction showed no problem. As a result of the experiment in sub-zero area, compared with standard without adding deodorant, comparative formulation containing deodorant 2, 3, 5, and 9 showed relatively faster hydration rate, and deactivation of deactivator 3 was faster. . In the case of the antifreeze agents 1, 7, 8, the hydration reaction was faster than the standard, but the hydration reaction was slower than the other comparative formulations, and the antifreeze agent 1 was faster than the antifreeze agents 7, 8. .

The rapid hydration rate means that the initial strength enhancement can be achieved, and the experimental results indicate that the initial strength was well developed when calcium formate was used. Calcium acetate or potassium silicate also appears to play a role in strength enhancement. In the case of potassium formate or potassium acetate alone or mixtures thereof, the initial strength enhancement appears to be somewhat slower than that used with other materials. Therefore, it is considered to be preferable to use together with other compositions. . However, potassium formate alone is more effective in improving the initial strength than potassium acetate, but may be used in combination thereof in consideration of anti-logging properties.

Determination of strength according to flow and curing of mortar

Formulation of applied mortar

As a result of the flow test, the addition of about 3% of the anti-rust agent compared to the binder had little effect, and no unusual value was obtained. However, if the addition of the anti-rust agent for use in the extreme is expected to have an effect.

The results of standard curing were as follows and for the 3% application of the binder.

In the case of the antifreeze agents 1, 7, 8, the initial strength is lowered, and in the other cases, the initial 3 days strength characteristics are good. In the case of a calcium formate-containing antifreeze, even in the case of long-term age, the strength characteristics are similar or better than the standard. This shows the possibility that it can be used as an adjuvant in the case of standard curing as well as Korea-China concrete.

The results of the sub-zero curing were as follows, with 1% and 3% application. It carried out under the temperature of the average temperature of -10 degreeC.

In the case of outdoor curing in the sub-zero region, the compressive strength is superior to the standard in the early age. It is also very good at long-term aging of 28 days. This is because in the case of the anti-rust agent of the present invention, the effect of freezing point is large, which prevents the freezing of water involved in the hydration reaction, so that the smooth hydration reaction proceeds to some extent. In the case of subtropical external curing, as the amount of anti-freeze agent is increased, the characteristics of mortar are improved at early and long-term age, and even if the age is increased, the compressive strength is not lowered compared to the standard. In terms of strength, the properties appear to be better when used in combination with calcium formate rather than potassium acetate or potassium formate alone. However, at very low temperatures, it may be necessary to increase its use or increase the amount of potassium acetate or potassium formate.

Measurement of change according to curing of concrete

The mix of concrete is as follows.

The slump and the amount of air in concrete are as follows. In the case of 15% by volume, the conversion ratio is 7.8%. Typically, the case of the anti-rust agent 1, 3, 5 is shown.

In the case of the initial flow characteristics, the change in the initial susceptibility of the concrete to which 1% of the binder is added is not large, but the fluidity tends to decrease somewhat as the amount of the additive is increased. In particular, assuming severe subzero regions and applying W * 15% (B * 7.8%), there is a significant decrease in liquidity. Therefore, when curing under severe conditions of subzero regions, it is desirable to add a fluidizing agent separately. Seems to be. In the case of general application, the change of slump does not show much difference compared to that of the standard state, and the change of the slump over time tends to increase with the increase of the amount of anti-freeze, but the difference is almost the same as that of the standard. none.

Although the expression rate of air volume according to the amount of antifreeze agent tends to be somewhat small, there is no big difference, and the change with time is slightly larger when the antifreeze agent is added, but it does not affect the physical property change.

That is, in the case of the antifreeze agent of the present invention, it is difficult to see a marked drop in fluidity or change in physical properties. It seems to be desirable.

Measurement of the change in compressive strength of concrete

The compressive strength characteristics of hardened concrete were measured at 28 days of age under standard curing and outside air temperature in the subzero region, and 1 hour at room temperature to rule out the possibility of strength measurements under water freezing conditions when measured under the outside air temperature in the subzero region. It was left to stand for strength measurement. The outside temperature averaged -10 ℃ but the surface temperature of the concrete seems to be lower than this. In the case of the standard curing, all concretes with antifreeze showed excellent strength characteristics up to 7 days of age, but there was a slight decrease in strength in long-term age.

In the case of outdoor curing in the sub-zero region, the strength expression characteristics were excellent at all ages compared to the standard without adding the antifreeze agent, especially the strength expression characteristics at the early age. As the amount of antifreeze agent is increased, it shows excellent expression characteristics. The following are the results of external freezing of some of the antifreeze agents, and B * 3% and W * 15% were applied. When W * 15% is applied, a very low external temperature is assumed, and the ratio may be further increased at a lower temperature.

In order to ensure sufficient initial strength even in severe sub-zero weather, the amount of anti-freeze is expected to be somewhat higher, and the strength increase rate is considerably higher than the no additive. In the case of sub-zero curing, there was no reduction in strength even in long-term age.

Claims (14)

At least one organic acid salt selected from the group consisting of formic acid and acetate salts of alkali and alkaline earth metals, and at least one polysaccharide selected from the group consisting of chitin, chitosan and chitin chitosan partially depleted of acetyl groups of chitin. Non-chlorinated concrete anti-rust agent made. The method according to claim 1, The organic acid salt is a non-chloride-based concrete activator, characterized in that the group consisting of potassium acetate, potassium formate, sodium acetate, sodium formate, calcium acetate, calcium formate, magnesium acetate, magnesium formate. The method according to claim 1, The selected organic acid salt is potassium formate, calcium formate, characterized in that the non-chloride concrete actuating agent. The method of claim 3, 10 to 50% by weight of potassium formate, 5 to 15% by weight of calcium formate, 0.01 to 5% by weight of chitosan, and the remaining water for non-chloride concrete. The method according to claim 1, The selected organic acid salt is potassium formate, calcium formate, calcium chloride acetate for non-chloride concrete actuating agent. 6. The method of claim 5, 10 to 50% by weight of potassium formate, 5 to 15% by weight of calcium formate, 0.01 to 5% by weight of chitosan, 5 to 15% by weight of calcium acetate and the remaining water for non-chloride concrete. The method according to claim 1, The selected organic acid salt is potassium formate, calcium formate, calcium acetate and a non-chloride-based concrete actuating agent, characterized in that it further comprises potassium silicate. 8. The method of claim 7, Non-chloride system comprising 10 to 50% by weight of potassium formate, 5 to 15% by weight of calcium formate, 0.01 to 5% by weight of chitosan, 5 to 15% by weight of calcium acetate, 2 to 10% by weight of potassium silicate and the remaining water Anticorrosive for concrete. The method according to any one of claims 3 to 8 The potassium formate is replaced by potassium acetate, or the potassium formate is a non-chloride-based concrete mover, characterized in that the mixture of potassium formate and potassium acetate. The method according to any one of claims 1 to 8, The anti-chlorinated concrete anti-corrosive agent further comprising a fluidizing agent. The method according to any one of claims 1 to 8, The anti-chlorinated concrete actuating agent, characterized in that it further comprises a corrosion inhibitor. 12. The method of claim 11, The anti-corrosive agent is a non-chloride concrete actuating agent for at least one selected from the group consisting of benzotriazole, sodium benzoate, sodium silicate. The method according to any one of claims 1 to 8, Non-chlorinated concrete anti-rust agent characterized in that it further comprises a pH adjusting agent. 14. The method of claim 13, The pH adjusting agent is a non-chloride concrete actuating agent for at least one selected from the group consisting of triethanolamine, sodium hydroxide, potassium hydroxide.

Images