MX2008005362A - Corrosion resistant compositions for treatment of hardened concrete structures - Google Patents

Abstract

A composition of a solution of a metal salt of a dioic acid that provides corrosion resistance and moisture resistance is disclosed for application to post-construction materials. The composition may further include an effective amount of a thinningagent, e.g., isopropyl alcohol, ethanol, xylene or similar composition, for application directly to the surface of the post- construction material. The composition is effective for reducing corrosion of post-construction materials, including unreinforced concrete or reinforced concrete, and reduces the permeation of moisture and/or the extension of cracks/fissures within the post-construction material. The composition may be applied to the post-construction material through brush applications, spray applications, mist applications or the like. Figure 1 is a macro cell current test graph of voltage vs. time for a post-construction cement article treated according to an exemplary embodiment of the present disclosure.

Description

COMPOSITIONS RESISTANT TO CORROSION FOR TREATMENT OF HARDENED CONCRETE STRUCTURES BACKGROUND OF THE INVENTION Technical Field The present disclosure generally relates to a composition or system for use with post-construction materials, and more particularly relates to a composition or system that provides corrosion and / or moisture resistance for structures of post-construction concrete reinforced and not reinforced. Description of the Background Art The cost of corrosion in materials is devastating with respect to human fatalities. From a financial perspective, the cost of corrosion is estimated to be over $ 300 billion each year in the United States. The problem of corrosion prevention remains a challenge facing the construction and maintenance industries. Commonly, the structures are made of concrete materials. Because conventional concrete has very low tensile strength, the common practice is to reinforce concrete with steel bars in applications where concrete is subject to substantial loads. In such a case, the concrete has at least two functions. One of such function is to protect the reinforcing steel bars against the corrosion. Another prominent function is to improve the shear strength and compressive stresses. As a general matter, the protective effect of hardened concrete against climatic and environmental conditions on reinforced steels depends, for example, on the amount and type of cement, water / cement factor and concrete integrity. However, since concrete is also a permeable absorbent material, this frequently leads to the undesirable intrusion of moisture and other substances, such as chloride, sulfate and even carbon dioxide, all of which can lead to corrosion of reinforced steel. As the reinforced steel corrodes, it expands, thereby cracking the concrete, which in turn allows more invasion of impurities, for example, ingress of water and chloride, which in turn advances the corrosion as the cycle is built. On the other hand, as a result of several depletions, such as environmental conditions, which include less stress and compressive stresses, accumulated after some length of service, the concrete may eventually crack and fail. These processes frequently lead to premature deterioration and subsequent failure of concrete structures. Efforts have been made to resolve the premature deterioration of such structures. For example, the U.S. Patent No. 4,869,752 by Jaklin describes the use. of modified inorganic silicates, for example modified alkali silicates, as a concrete additive to prevent corrosion of reinforced steel or steel structures. US Patent No. 6,277,450 by Katoot discloses the use of a coating process to coat metal surfaces that are modified to an active portion of metal hydroxide receptive to a fully crosslinked polymer of various thicknesses. Other processes that have been used have included pre-coated surfaces of metals used in the building and construction industry. However, such methods are generally costly, ineffective and inefficient / impractical. Despite the efforts to date, there remains a need for treatments, materials and processes resistant to corrosion that are effective, efficient and reliable. For example, there is a need for a composition / system that can be used with post-construction materials to provide corrosion resistance and / or moisture resistance to reinforced and non-reinforced hardened concrete that is effective, efficient and offers performance properties. desirable cost / benefit. BRIEF DESCRIPTION OF THE PRESENT DESCRIPTION In accordance with the present disclosure, compositions and systems are provided for use in the treatment of post-construction materials. The compositions and systems disclosed are particularly useful in treatment modalities wherein hardened concrete structures are subjected to one or more other applications of a corrosion resistant and / or moisture resistant material / system. The disclosed treatment modalities are advantageously effective in reducing the proportion and / or impact of corrosion on or for a structure that! contains concrete. Thus, for example, the disclosed corrosion inhibiting composition / system can be applied to a structure containing hardened concrete through various treatment techniques, for example, by spraying, brushing or mist application of an effective amount of the composition / system that inhibits the corrosion disclosed on one or more surfaces of the structure containing concrete. The treated structure (s) advantageously demonstrated improved corrosion properties, for example, a substantially reduced rate of corrosion. In an exemplary embodiment of the present disclosure, an aqueous solution of an alkali metal salt of a dioic acid is employed to effect the desired corrosion and / or moisture resistant properties I, for example, a sodium salt. alkaline thereof. The disclosed aqueous solution / composition provides resistance to corrosion and moisture resistance to structures and / or surfaces that include hardened concrete, for example, post-construction materials and structures. The aqueous solution / composition disclosed generally includes an alkaline salt of a dioic acid of the following formula: wherein + is selected from the group comprising Na + and K +; Ri is a branched or linear aliphatic compound of Ci to C24; and R2 is a branched or linear aliphatic compound of Ci to Cio- The exemplary corrosion inhibiting and moisture inhibiting solutions and systems of the present disclosure may further include a diluting agent and / or a carrier that is effective in reducing the viscosity of the solution / system disclosed. For example, a dilution agent can be incorporated into the solution / system disclosed in an amount of about 5% to about 70% by weight. The dilution agent advantageously facilitates the penetration of the solution / system that inhibits the corrosion disclosed in the concrete containing structure, for example, through pores, cracks and / or cracks formed or defined in the structure that contains concrete. Exemplary diluting agents include isopropyl alcohol or a similar solvent (or combinations thereof). Notably, the dilution agents disclosed may additionally function to reduce the potential of impurity (s) to react with the solution / system that inhibits the reported corrosion, for example, potential reactions with Ca + ions in concrete-containing structures, for this way to increase the stability and / or total effectiveness of the solution / system that inhibits the corrosion disclosed. Post-construction materials and structures that can be treated with the disclosed solutions / systems can vary widely, and include structures such as assemblies or reinforced or non-reinforced concrete elements, mortar, stucco and the like. In exemplary embodiments of the present disclosure, the disclosed solution / system can be applied directly to the outer surface of a reinforced and / or non-reinforced structure and allowed to penetrate the interior regions thereof, for example, by capillary action. In a further exemplary embodiment of the present disclosure, advantageous methods and / or techniques are provided for treating post-construction structures and assemblies, particularly post-construction structures and assemblies that include a concrete component. hard. In accordance with exemplary embodiments of the disclosed method, a composition is applied or otherwise added to the structure or post-construction assembly, the composition having the formula: wherein M + is selected from the group comprising Na + and K +; Ri is a branched or linear aliphatic compound of Ci to C2, and R2 is a branched or linear aliphatic compound of Ci to Cio. The composition is generally applied directly to a post-construction surface in an effective amount to achieve an effect that inhibits corrosion and / or that inhibits moisture, thereby reducing the effects of deterioration of the post-treatment corrosion. According to exemplary embodiments, the disclosed method further includes the step of adding a diluting agent to the composition, such a dilution agent generally being added in an amount of ab5% to ab70% by weight. The dilution agent I can be isopropyl alcohol or a similar solvent (or combinations thereof). In still further embodiments of the disclosed method, a washing step may to be undertaken to remove or reduce the level of impurities i on the surface of the post-construction surface before applying! the disclosed composition. Indeed, the disclosed composition can also be mixed with a coating material before application. The additional beneficial features, functionalities and results associated with the solution / system that inhibits the disclosed corrosion and the treatment modalities associated therewith will be apparent from the detailed description that follows, particularly when read in conjunction with the accompanying figures. BRIEF DESCRIPTION OF THE FIGURES! To assist those of ordinary skill in the art in making and using the solutions / systems that inhibit corrosion disclosed, reference is made to the accompanying figures, wherein: Figure 1 is a macrocell current test graph of the voltage versus time for a post-construction cement article treated in accordance with an exemplary embodiment of the present disclosure. Figure 2 illustrates post-construction concrete articles locked with a solution / system that inhibits exemplary corrosion in accordance with the present description five (5) weeks! after the treatment. Figure 3 illustrates a comparison of: (i) post-construction concrete articles treated with a solution / system that inhibits exemplary corrosion according to the present, description five (5) weeks after treatment and (ii) post-construction concrete articles withtreatment. DETAILED DESCRIPTION OF EXEMPLARY MODE (S) The present disclosure generally relates to an additive composition or system that provides protection from corrosion resistance and moisture resistance to post-construction materials, such as concrete, mortar, stucco, steel and the like. In particular, the additive composition acts to stabilize materials susceptible to corrosion, for example, in concrete and also acts to block or inhibit the flow of moisture through cracks, pores and fissures. While the description herein primarily discusses the composition of additive for use with post-construction concrete material, it is to be understood that the use of concrete material is merely for illustrative purposes and is not intended to limit the use from the additive composition to just the concrete material. The additive composition of the present invention includes a solution of an alkali metal salt of a dioic acid, typically an aqueous solution thereof. Thus, the additive composition can be a solution Water based which includes a mixture of organic alkenyl dicarboxylic acid metal salts (eg, sodium salt) and additives. The disclosed additive composition has the following formula: wherein M + can be selected from a group including, for example, Na + y, K +; Ri can be a branched or linear aliphatic hydrocarbon from Cx to C24 and R2 can be a branched or linear aliphatic hydrocarbon from Cx to Ci0, and can be prepared according to the following reactions: R, -C 0) R, -C = C CH, DC or R2-C / \ CH2 0 \ / H C-C / \ R? -C = C o II i wherein the resulting addition compound is reacted with alkali hydroxide as follows: to form a salt solution based on dimetal of dioic acid (eg, salt based on disodium). In other embodiments, the additive composition can be blended in an effective amount with a composition that contacts the exposed iron or steel for subsequent application to exposed iron or steel. The action (I) is typically carried out at elevated temperatures and pressures for a time sufficient to alter the disclosed dioxide alkene acid anhydride composition. For example, the temperature may be approximately 232.20 ° C (450 ° F), the pressure may be approximately 40 psi for a period of time of approximately eight (8) hours. The resulting material (after removal of unreacted materials) can be introduced into an appropriate unit, for example, a batch distiller or film evaporator, to collect a distillate of the dioic acid alkene anhydride composition. The dioxide alkene acid anhydride composition can then be introduced into a stainless steel reactor which typically includes a reflux condenser.An aqueous solution of sodium or potassium hydroxide can be slowly introduced for a portion of time and at a sufficient temperature. to effect the conversion thereof to a solution of disodium or dipotassium salt. In accordance with the present disclosure, the additive composition, which inhibits the corrosion disclosed may also include a diluting or diluting agent. Dilution is usually selected from materials that are non-reactive with the composition / solution that inhibits corrosion An exemplary dilution agent for use according to the present disclosure is isopropyl alcohol, although other diluents (and combinations / dilution agent mixtures), eg, ethanol, may be employed! and / or xylene, without departing from the spirit or scope of the present description. The dilution agent generally functions to reduce the viscosity of the composition and to reduce the likelihood of reaction with impurities (for example, calcium ions) by reducing the initial concentration of the active composition. In exemplary embodiments of the present disclosure, a diluting agent II is added at a level sufficient to decrease the viscosity of the solution / system which in turn increases the depth of penetration of the diluted solution / system i when applied to a concrete structure reinforced or not reinforced in si tu. Preferably, the diluting agent is added at a level of from about 5% to about 70% by weight and, more preferably, from about 5% to about 30% by weight relative to the additive composition. In accordance with exemplary embodiments of the present disclosure, the additive composition provides at least two levels of protection to the treated structure / assembly. For example, the first level of I protection includes or involves the protection of corrosion resistance. Thus, the solution / diluted system is able to migrate to a potential corrosive sitip and form a monomolecular film on the same.Remarkably, the additive composition exhibits polarity at one molecular end thereof, I thereby facilitating the adhesion and / or binding with respect to polar / ionic substrates oppositely charged, i for example, iron and / or other metal molecules and the like I. i The second level of protection that the disclosed additive composition provides structures / assemblies of! Post-construction is resistance to moisture. The 'resistance to' moisture arises, at least in part, from a blocking effect that is achieved by the!, i composition / system disclosed when m applies if you. j Because the additive composition is reactivated, it will tend to react with, for example, metal and other ions in aqueous systems! found, metallic or other ions found in concrete, and / or metal or other ions that are found in the reinforcement materials / substrates associated with post-construction structures / assemblies. i From one or more of the reactions noted (or other reactions that may occur due to the constituents present in or on the post-construction structure / assembly), the molecules / compounds that have limited water solubility, for example, the precipitates are formed that include chains! of long hydrocarbons. These long chain hydrocarbon chains are generally hydrophobic. I Analogous to oils that repel water, the! Molecules / compounds noted, for example, precipitated materials, fill-the cracks and / or fissures, capillaries of the structure / assembly of the post-construction, for example, the hardened concrete substrate to which the solution / system divided is applied, in this way Advantageously, it repels water or reduces capillary absorption. Notably, the active ingredients of the additive composition can be highly soluble in water, but they also inhibit a tendency or inclination to react with metals, such as iron and calcium, to form metal salts insoluble in water or slightly soluble. Thus, the disclosed additive composition can function to form a wax-like substance when applied to a post-construction structure / assembly and such a wax-like substance can be characterized by a first end which is substantially hydrophilic and a second. , opposite end which is substantially hydrophobic. As is known to those skilled in the art, corrosion will generally occur in what can be described as an oxy-redox reduction, whereby electrons flow through the metal from the anode to the cathode. If the anode is protected, the electrons of the hydroxyl (OH-) are prevented from entering. Conversely, if the cathode is protected, the electrons are prevented from flowing to it. For purposes of an electron flow discussion, the additive compositions according to the present disclosure generally protect the anode. As the electrons flow, the anode develops a positive charge. The positively charged surface then attracts the strongly electronegative or hydrophilic end of the additive composition. In the composition of the additive that reaches the surface, it generally binds or binds itself to the iron of the reinforced steel to form a slightly soluble hydrophobic layer that protects the anode's potential. iron / steel reinforced. With respect to exemplary embodiments of the disclosed treatment regimen where the post-construction material is concrete, cured / hardened concrete generally contains water molecules in pores, cracks and / or cracks defined in hardened concrete, such water that enable the additive composition to migrate to the anodic surface of the reinforced steel within the concrete structure.

Additionally, the excess of the additive composition generally reacts with calcium (or other impurities) to form molecules / compounds substantially insoluble in water, for example, precipitated molecules, which reduce the water permeability of the hardened concrete structure / assembly. This reduced permeability further mitigates the corrosion process and / or potential for further corrosion of any implicit reinforced steel. Various test methodologies can be used to assess the effects on corrosion of the additive compositions disclosed, for example, in post-construction applications thereof. For example, The test related to corrosion may include polarization resistance measurements, IR drop and I visual examination. Additionally, the test according to I I ASTM G109, the macrocell corrosion current activity and half cell in pre-quartered specimens can be performed. Figure 1 illustrates the results of a macrocell current test performed on a post-construction concrete material using the solution / additive system disclosed with dilution agent. The graph of Figure 1 illustrates the advantageous effect of the additive composition disclosed on a bar that reinforces the listed corrosion within a hardened concrete structure. This specimen shows corrosion as a result of 168 weeks (1176 days) of corrosion test according to which the reinforced steel concrete block specimen was subjected to weekly cycles involving a 15% saltwater pond over a period of four (4) days, followed by three (3) days of drying. After week 168 (i.e., 1176 days), the solution / additive system disclosed with the dilution agent was applied to the reinforced steel concrete block specimen via the application of > dew, that is, in if you. A reduction in voltage over the graph in Figure 1 corresponds to or reflects a reduction in proportion or level of corrosion. As shown in the graph of Figure 1, a reduction in voltage was observed substantially simultaneous with the spray application of the solution / system disclosed with the dilution agent to the surface of the specimen. Notably in particular, the voltage level dropped below a threshold level of 0.1 mV, which generally reflects an absence of additional corrosion to the treatment site. With further reference to Figure 1, the anti-corrosion treatment of the present disclosure was effective to maintain a significantly reduced level or proportion of corrosion (as measured by the voltage drop) for a period of about thirty-six ( 36) weeks, that is, at approximately 1428, at which point the voltage drop began to increase. For the entire thirty-six week period, the specimen was subjected to a weekly corrosive cycle in the course of the saltwater pond at 15% for four (4) days followed by. three (3) days of drying. As reflected in Figure 1, an additional post-construction treatment was carried out on or around day 1513, which again caused the voltage drop to decrease, that is, reduced the level / corrosion rate for the post-construction material. . Once again, the corrosion levels would go significantly! down. A re-application of the anti-aging solution / system The disclosed corrosion can be attempted on a periodic basis, for example, based on empirical results as to the period of time over which the disclosed solution / system is likely to be delayed and / or reduced in its operating capacity. The frequency of re-application II can be influenced by a number of factors, eg, environmental conditions, level / amount of initial application, depth at which reinforced steel i is positioned, total age of the concrete structure, surface use and the like. The re-application of the disclosed anti-corrosion solution / system can be attempted in an automated manner, for example, by placing application mechanisms (sprinklers or the like) in proximity to the structure for automatic application of the system. solution / system, disclosed at predetermined times / intervals. In a further exemplary embodiment of the present disclosure, the application / re-application of the disclosed anti-corrosion solution / system can be remotely performed, for example, by remotely acting an I I application mechanism using RF technology or the like. The alternative procedures and / or mechanisms for effecting the periodic application of the disclosed solutions / systems are contemplated and the exemplary procedures disclosed herein should not be viewed as limiting the present disclosure. By example, the disclosed additive composition / solution can be applied through a variety of painting, casting techniques! and / or "rubber brush". Generally, corrosion is a difficult process to inhibit and it seems to be an even more difficult process to stop / stop once it has started. The application of the I composition / additive solution to post-construction structures and elements has demonstrated dramatic effectiveness in mitigating ongoing corrosion and reducing the rate and degree of corrosion progress. The data presented in the Figure 1 demonstrates the effectiveness of the disclosed solution / system i for purposes of post-construction applications, which specifically show that during a thirty-six week post-application period in an aggressive testing environment that effects accelerated aging, a Significantly decreased voltage level was observed and maintained, which results in a dramatic reduction and / or effective elimination of corrosion after application of the same disclosed solution / system. With the additional reference to Figures 2 and 3, a series of test specimens are shown. The meaning of the visual characteristics different from the test specimens i with respect to samples receiving treatment i using the composition / system of additive disclosed (post-hardening) and those that did not receive the treatment reported (ie, untreated specimens) is discussed in the present shortly. Figure 2 illustrates two (2) post-construction concrete cuvettes that are substantially hollow in the interior (ie, hollow by approximately two-thirds of their respective height) and that were treated in the interior with the composition / additive system disclosed. The composition / additive system was applied when brushing a treatment solution on the inner surface of the hollow tray, i After the treatment, the interior regions of the concrete cuvettes shown in FIG.

Figure 2 were isubstantially filled with a solution of I salt and such a salt solution was kept inside the cavity i for a period of five (5) weeks. As it is apparent from the images of! Figure 2, the minimum indicators of salt migration through the walls of the cuvette wall were detectable. The irregular shape of the white / pale constituents visible on the surface of the concrete buckets correspond to aggregates, as it is opposite to the exit The absence of migration of salt through the wall of the concrete bucket, as it is apparent for purposes of the treated concrete buckets of Figure 2, reflects an effective anti-corrosive effect because, if the salts were! you release to migrate to the outer surface of 'the bucket, then the corrosive agents would be free to migrate to the internal components of a post-construction assembly / member, for example, a reinforced steel member and initiate / support corrosion thereof. In contrast and with specific reference to Figure 3, the two concrete buckets on the left did not receive a post-construction treatment of the disclosed anti-corrosive composition / system. Rather, a salt solution was added to the interior region and remained there for five (5) weeks without any corrosive preventative treatment. As apparent from the substantial white spots / regions on the outer surface of untreated concrete buckets, significant levels of salt migration through the untreated bucket walls is clearly discernible. This migration of salt will translate it into an increased level of corrosion in field facilities or other post-construction concrete systems Clearly, the treated samples (the two concrete buckets to the right of Figure 3) demonstrate better performance, as measured by the salt migration levels during a test period of week five (5) and further establish the efficacy of the post-construction treatment modality disclosed for purposes of inhibition and / or elimination of corrosion effects in post-construction materials In reality, the comparative images of Figure 3 clearly demonstrate the effectiveness of the post-construction treatment modality disclosed in achieving advantageous corrosion-related results. As disclosed herein, the composition / additive system can be applied to the existing concrete or mortar surface, i.e., a post-construction material and generally works to penetrate cracks in the concrete / mortar that it achieves. reinforced steel I or other potentially corrosive materials positioned with this, in order to prevent corrosion of the steel while reducing the moisture permeability of the concrete. The additive composition can be applied by standard application methods which include, for example, but not limited to, tank or roller applied as well as high pressure and low pressure spray applications. In an exemplary embodiment of the present disclosure, about 1 gallon of the disclosed solution (20% active composition / 80% water plus diluting agent at about 5% to 70% by weight) can be applied at 50 to 150. square feet i of concrete surface. In other exemplary embodiments, before applying the disclosed solution composition to a surface, the surface may be cleaned, for example, or pressure washed to remove any cement slurry, contaminants, coatings, dirt and / or existing contamination. The surface is then You can rinse preference with clean water and leave an opportunity to dry before application of the additive composition. Optionally, more than one coating of the additive composition can be sequentially applied to the surface, for example, 2 to 5 treatment applications. ! In other exemplary embodiments, the disclosed solution / composition may be mixed with an additional coating / carrier that may have a low viscosity to increase the penetration of the composition into the concrete and then apply to the post-construction material. The coating / carrier may also have surfactant properties that facilitate penetration into the hardened concrete material of the treatment system. By | example, the solution / composition disclosed herein may be mixed with a carrier and applied to existing reinforced concrete structures. The embodiments of the present disclosure provide numerous advantages, including, for example, that the additive composition is environmentally safe and is an entraining agent and air in fresh concrete. Actually, the exemplary modalities of; system / treatment solution disclosed exhibits reduced levels of volatile organic compounds (VOCs) relative to other types of surface treatments. Additionally, he use of the disclosed additive composition In post-construction applications it eliminates the need for membranes and other water maintenance systems, offers reduced maintenance costs by increasing service life, and also provides an engineering value solution to water testing challenges and corrosion protection. The following examples are illustrative of the processing of the alkene and cyclic diene in connection with the generation of the composition / solution disclosed for the post-construction treatment. Example 1 i Approximately 300 grams of 2,5-furanodione and 750 grams of tetramethylethylene together with one (1) gram of antioxidant BHT \ are added to a reaction vessel of! stainless steel. The reaction mixture is stirred vigorously at about 250 ° C under a blanket of N for about 4 hours. After removal of the unreacted material under reduced pressure, the resulting product is processed in a thin film evaporator at approximately 235 ° C and approximately 5 mm Hg, collecting approximately 730 grams of light product fraction where the fraction from the bottom is discarded. I The light fraction produced is introduced into a stainless steel reaction vessel, which includes a reflux condenser and is heated to approximately 100 ° C.

I for about 2 hours, in which about 80 grams of sodium hydroxide solution is added slowly and stirred until a clear yellow solution of a dodecenyl disodium salt of butane dioic acid is formed. Then, isopropyl alcohol is added as a diluting agent in an amount of about 25% to decrease the viscosity of the system. A reduced viscosity is advantageous in increasing the depth of potential penetration of the solution / system when applied to a post-construction concrete structure, reinforced or not reinforced in itself. Example 2 i Following a similar procedure as described in Example 1, ninety-eight (98) grams of anhydride! maleic and sixty-eight (168) grams of propylene tetramer at about 230 ° C at about 40 psi for about 4 hours. After the removal of the n reactive materials, a distillate is formed and after heating and preliminary stirring, sodium hydroxide in the amount of about 0.27 grams is added slowly to form a salt solution of a disodium salt. of dodecénil of butane dioic acid. During the preparation of the additive composition, I of the disclosure, anti-foaming agents such as 2-methyloxymethyletoxy propane can be used in amounts from about 0.02% to about 0.10% by weight. Additional stabilizing agents, such as benzoic acid, maleic acid, and the like, may also be employed. Isopropyl alcohol is added as an agent of! Dilution, in an amount of about 25% to decrease the yiscosity, which in turn increases the depth of penetration when applied to a reinforced concrete structure or not reinforced in itself. While the present invention has been described with respect to the exemplary embodiments themselves, it will be recognized by those of ordinary skill in the art that many modifications, enhancements, variations and / or changes can be achieved without departing from the spirit and scope of the invention. invention. Therefore, it is clearly proposed that the invention be "limited only by the scope of the claims and equivalents thereof.

Claims (18)

1. CLAIMS 1. In combination: a composition that provides resistance to corrosion for application to a post-construction material that * has a formula wherein M + is selected from the group consisting of Na + and K +; Ri is a branched or linear aliphatic compound of Ci to C24 and R2 is a branched or linear aliphatic compound of Ci to Cio; and a post-construction material; wherein the composition is applied to at least one surface of the post-construction material after the post-construction material has hardened.
2. 2. The combination according to claim 1, characterized in that the composition further comprises a diluting agent in an amount of about 5% to about 70% by weight.
3. 3. The combination according to claim 2, characterized in that the dilution agent is selected from the group consisting of isopropyl alcohol, ethanol, xylene and combinations thereof.
4. 4. The combination according to any of the preceding claims, characterized in that the composition is an aqueous solution of a metal salt of a dioic acid.
5. 5. The combination according to any of the preceding claims, characterized in that the post-construction material is selected from the group consisting of reinforced or non-reinforced concrete.
6. The combination according to any of the preceding claims, characterized in that the post-construction material is a structure containing concrete and wherein the composition is applied directly to an exterior surface of the structure containing concrete.
7. 7. A method for treating a post-construction material, characterized in that it comprises: providing a composition having a formula: wherein M + is selected from the group consisting of Na + and K +; Ri is a branched or linear aliphatic compound of Ci to C2 and R2 is a branched or linear aliphatic compound from Ci to Cio; and applying the composition directly to a surface of the post-construction material after the post-construction material has hardened.
8. 8. The method of compliance with the claim 7, characterized in that it further comprises the step of adding a diluting agent in an amount of about 5% to about 70% by weight to the composition before application of the composition to the surface.
9. 9. The method of compliance with the claim 8, characterized in that the dilution agent is selected from the group consisting of isopropyl alcohol, ethanol, xylene and combinations thereof.
10. 10. The method according to any of the preceding method claims, characterized in that the composition is an aqueous solution of a metal salt of a dioic acid.
11. The method according to any of the preceding method claims, characterized in that the post-construction material comprises existing reinforced or non-reinforced concrete.
12. 12. The method according to any of the preceding method claims, characterized in that it also comprises the step of washing the surface of the post-construction material before applying the composition.
13. The method according to any of the preceding method claims, characterized in that it further comprises the step of mixing the composition with a coating material.
14. The method according to any of the preceding method claims, characterized in that it also comprises a reapplication of the composition to the surface of the post-construction material.
15. The method according to claim 14, characterized in that the reapplication is carried out to maintain the anti-corrosive functionality with respect to the post-construction material.
16. 16. The method according to any of the preceding method claims, characterized in that the post-construction material includes at least one constituent selected from the group consisting of concrete, mortar, stucco and steel.
17. 17. The method according to any of the preceding method claims, characterized in that the application is effective to reduce the corrosion rate of the post-construction material.
18. 18. The method according to any of the preceding method claims, characterized in that the application to the post-construction material is carried out by means of an application mechanism selected from the group consisting of the application of sprinkling, application with brush, application of mist and combinations thereof.