KR102401236B1 - Modified sulfur mortar composition and modified sulfur concrete composition comprising same - Google Patents

Abstract

The present invention is cement; and a modified sulfur binder containing modified sulfur obtained by melt polymerization of sulfur and an unsaturated fatty acid-based modifier, wherein the content of the modified sulfur binder is 1 to 30 parts by weight based on 100 parts by weight of the cement. It relates to a composition, and a modified sulfur concrete composition comprising the same.

Description

Modified sulfur mortar composition and modified sulfur concrete composition comprising same

The present invention relates to a modified sulfur mortar composition and a modified sulfur concrete composition comprising the same.

Sulfur has a flash point of 207 ℃ and a spontaneous ignition temperature of 245 ℃. Sulfur has ignitable properties, and sulfur exposed to the surface and in contact with air is easily combusted. It also occurs frequently in the desulfurization process of natural gas.

Sulfur, which is in a stable solid state, has high strength if there is no defect in the sulfur itself, but in the case of solid sulfur formed by cooling and solidifying liquid sulfur, there are generally three types of orthorhombic, monoclinic, and amorphous types mixed. . The solid sulfur solidified in this way changes the mixing ratio of the three types according to the cooling conditions, and the solidified sulfur itself is prone to defects over time and has brittleness that is easy to break. Therefore, pure sulfur has a very limited scope of application.

In particular, it can be applied to various building and civil engineering materials, but there is a limit to the application only with pure sulfur due to the above characteristics. Specifically, in the case of a sulfur material with brittle fracture characteristics, plastic deformation hardly occurs, so all of the force applied to the material is used for fracture as it is, and when a force greater than the yield strength is applied, instantaneous fracture occurs. It is an unstable material similar to Portland concrete properties.

In order to improve these shortcomings, various types of sulfur modifiers have been studied. In particular, dicyclopentadiene (DCPD) is known to have an effect such as improving the brittleness of sulfur as well as excellent economic feasibility due to its low price.

However, the reaction of dicyclopentadiene and sulfur is known to be difficult to control because it is difficult to control the polymerization reaction itself, so there is a risk of causing an explosive exothermic reaction, and the temperature and viscosity are rapidly increased during the reaction. In addition, dicyclopentadiene and sulfur cause supercooling even after the polymerization reaction, making them inefficient in manufacturing and utilization. Due to the influence of external temperature, it is difficult to maintain a constant quality, so there are difficulties in work instability such as cracks and breaks after construction.

Korean Patent Publication No. 10-2014-0000160

An object of the present invention is to provide a modified sulfur cement mortar composition that is environmentally friendly and has improved work convenience, and a modified sulfur concrete composition comprising the same.

One embodiment of the present invention, cement; and a modified sulfur binder containing modified sulfur in which sulfur and an unsaturated fatty acid-based modifier are melt-polymerized;

The content of the modified sulfur binder is 1 part by weight to 30 parts by weight based on 100 parts by weight of the cement, to provide a modified sulfur mortar composition.

Another embodiment of the present invention provides a modified sulfur concrete composition comprising the modified sulfur mortar composition. Specifically, the modified sulfur mortar composition; fine aggregate; coarse aggregate; And it provides a modified sulfur concrete composition comprising a compounding water.

The modified sulfur mortar composition or the modified sulfur concrete composition according to the present invention applies modified sulfur prepared using an eco-friendly unsaturated fatty acid, thereby releasing toxic gas due to the modified sulfur using the existing dicyclopentadiene-based modifier and thus It can improve the deterioration of the working environment.

In addition, the modified sulfur mortar composition or the modified sulfur concrete composition according to the present invention can implement excellent physical properties such as excellent adhesion, chemical resistance, salt resistance, waterproofness, rust prevention, watertightness, flow resistance, and balance resistance.

1 shows the compressive strength test results according to Example 6.
2 shows the results of the moisture absorption rate test according to Example 6.
3 shows the chemical resistance test results according to Example 6.
4 shows the salt water resistance test results according to Example 6.
5 shows the flexural strength test results according to Example 6.
6 shows the results of the adhesion test according to Example 6.

Best mode for carrying out the invention

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

In the present specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, the present invention will be described in detail.

In the case of conventional cement mortar or concrete to which modified sulfur using toxic chemical products of petroleum refining by-products such as dicyclopentadiene, cyclopentadiene, pyridine, etc. As a result of conducting various studies to improve a very bad environment, the following invention was completed. Specifically, the present invention reforms sulfur using an environmentally friendly unsaturated fatty acid-based compound as a modifier, and when it is applied to cement mortar or concrete, it is possible to solve the problem of deterioration of the working environment when using the conventional modified sulfur and , and furthermore, it is possible to improve high functional properties such as strength, waterproofness, rust resistance, chemical resistance, flame resistance and / or adhesion of the cement mortar composition and concrete composition and improve workability, so that it can be applied to all concrete construction fields.

One embodiment of the present invention, cement; and a modified sulfur binder containing modified sulfur in which sulfur and an unsaturated fatty acid-based modifier are melt-polymerized;

The content of the modified sulfur binder is 1 part by weight to 30 parts by weight based on 100 parts by weight of the cement, to provide a modified sulfur mortar composition.

reformed sulfur

In an exemplary embodiment of the present invention, the modified sulfur may include sulfur and an unsaturated fatty acid-based modifier. Specifically, the modified sulfur may be melt polymerization of sulfur and an unsaturated fatty acid-based modifier.

In an exemplary embodiment of the present invention, the viscosity of the modified sulfur may be 4,000 cP or more and 25,000 cP or less at room temperature. Specifically, in an exemplary embodiment of the present invention, the viscosity of the modified sulfur may be 6,000 cP or more and 10,000 cP or less at room temperature.

In one embodiment of the present invention, the modified sulfur has spinnability. In the present invention, spinnability can be expressed as stringiness, thread pullability, etc., and whether or not it has spinnability is an experiment in which a glass stick is put into a mixture or reactant in a solution state in the manufacturing process of modified sulfur and then removed The case where a part of the mixture or reactant in a solution state is connected to a glass rod and pulled out like a long thread (1 cm or more) is observed to be defined as that the mixture or reactant has spinnability can

In one embodiment of the present invention, the modified sulfur includes a network structure or a honeycomb structure. The modified sulfur according to an exemplary embodiment of the present invention includes an unsaturated fatty acid-based modifier, so that double bonds in the unsaturated fatty acid-based modifier may be cross-linked in a honeycomb structure or a network structure through a polymerization reaction. In this case, it is possible to improve the functionality of the modified sulfur, such as adhesion, chemical resistance, flame resistance, rust prevention, watertightness, flow resistance, high strength.

In an exemplary embodiment of the present invention, the modified sulfur may be amphiphilic by including an unsaturated fatty acid-based modifier.

In the present specification, the sulfur includes ordinary sulfur, and examples of the sulfur include natural sulfur or sulfur obtained by desulfurization of petroleum or natural gas. Specifically, the sulfur may be elemental sulfur, crystalline sulfur, amorphous sulfur, colloidal sulfur, and mixtures thereof. In addition, the sulfur may be any one selected from the group consisting of α-sulfur (orthorhombic sulfur), β-sulfur (monoclinic sulfur), γ-sulfur, and combinations thereof. As the sulfur, sulfur in a solid state may be heated above its melting point to facilitate the reaction, or sulfur discharged as a liquid from related industries such as petrochemicals may be used. In addition, waste sulfur mixed with impurities from the steel mill can be used through simple filtering.

In the present specification, the unsaturated fatty acid-based modifier may refer to a compound including at least one carboxylic acid group and at least one carbon-carbon double bond in the compound.

In one embodiment of the present invention, the unsaturated fatty acid-based modifier may be a material obtained by recycling a used fatty acid or unsaturated fatty acid after using a fatty acid or an unsaturated fatty acid, or may be a material derived from nature. Therefore, as in the exemplary embodiment of the present specification, when the unsaturated fatty acid-based modifier is included, it is more environmentally friendly than when the conventional petroleum product modifier is included.

In one embodiment of the present invention, the unsaturated fatty acid-based modifier is erucic acid, palmitoleic acid, elaidic acid, myristoleic acid, linoleic acid acid), arachidonic acid, gondoic acid, oleic acid, eicosapentaenoic acid, docosahexaenoic acid DHA, α-linolenic acid (α- It may include at least one selected from the group consisting of linolenic acid) and γ-linolenic acid (γ-linolenic acid, GLA).

The unsaturated fatty acid-based modifier can be produced mainly by extraction from fruits or stems of plants, or can be mass-produced using waste oil discharged from the existing food industry, and can also be obtained in large quantities from by-products discarded in the slaughter industry. Therefore, the modified sulfur has the advantage that it can be manufactured as an eco-friendly component.

In an exemplary embodiment of the present invention, the content of the unsaturated fatty acid-based modifier may be 10 parts by weight or more and 450 parts by weight or less based on 100 parts by weight of the sulfur. Specifically, the unsaturated fatty acid-based modifier may be melt-polymerized with the sulfur in an amount of 10 parts by weight or more and 450 parts by weight or less based on 100 parts by weight of the sulfur. More specifically, the content of the unsaturated fatty acid-based modifier may be 30 parts by weight or more and 300 parts by weight or less, based on 100 parts by weight of sulfur. When the content of the unsaturated fatty acid-based modifier is less than 10 parts by weight based on 100 parts by weight of the sulfur, it is difficult to maintain a liquid state after synthesis, the functionality of the modified sulfur cannot be expected, and the brittleness of the sulfur also remains, making it difficult to use there is In addition, when the content of the modifier exceeds 450 parts by weight based on 100 parts by weight of the sulfur, there is no brittleness of sulfur, but the functionality such as waterproofing, rust prevention, adhesion and chemical resistance of the modified sulfur may be significantly reduced.

In an exemplary embodiment of the present invention, the modified sulfur may be melt-polymerized by further including a second modifier. The second modifier is different from the unsaturated fatty acid-based modifier, and the second modifier may be optionally added according to use in synthesizing modified sulfur.

In one embodiment of the present invention, the second modifier may include at least one selected from the group consisting of a saturated fatty acid-based modifier, an alcohol-based modifier, and an ester-based modifier.

In the exemplary embodiment of the present specification, the saturated fatty acid-based modifier includes, but is not limited to, stearic acid, palmitic acid, and the like.

In the exemplary embodiment of the present specification, the alcohol modifier includes, but is not limited to, glycerol and the like.

In the exemplary embodiment of the present specification, the ester-based modifier includes, but is not limited to, wax ester, dihydrocholesteryl oleate, and the like.

In an exemplary embodiment of the present invention, the content of the second modifier may be 0.01 parts by weight or more and 300 parts by weight or less based on 100 parts by weight of sulfur. The content range of the second modifier may be specifically adjusted according to characteristics such as adhesion, hydrophobicity, waterproofness, and rust prevention according to the use of the modified sulfur. Specifically, when a saturated fatty acid-based modifier, an alcohol-based modifier, or an ester-based modifier is used as the second modifier, the content of the second modifier may be 10 parts by weight or more and 300 parts by weight or less based on 100 parts by weight of sulfur.

In an exemplary embodiment of the present invention, the modified sulfur may not include a dicyclopentadiene-based modifier. Through this, the modified sulfur can suppress the emission of toxic volatile substances significantly lower than that of the modified sulfur using the conventional dicyclopentadiene-based modifier, thereby suppressing the occurrence of odors.

In one embodiment of the present invention, the modified sulfur may be melt-polymerized by further including at least one selected from an initiator, a surfactant, a coupling agent, a catalyst, a crosslinking agent, a dispersant, and a vegetable oil.

The initiator, surfactant, coupling agent, catalyst, additive, crosslinking agent, dispersing agent and vegetable oil are generally applicable as long as they do not interfere with the polymerization reaction of the modified sulfur, and are generally applicable as long as they are classified by the above names, and specifically limited doesn't happen The initiator, surfactant, coupling agent, catalyst, additive, crosslinking agent and dispersing agent may improve the dispersibility of the modified sulfur or form a hydrophilic or hydrophobic reactive group of the modified sulfur, and modified sulfur produced by polymerization reaction It may play a role in inhibiting or promoting crosslinks within.

In an exemplary embodiment of the present invention, the initiator is trans Cinnamaldehyde, Benzyl Acetate, Diethylaniline, Nitroethane, Formaldehyde Hydrate. , benzyl acetate (Benzyl Acetate), dodecyl benzene sulfonic acid (Dodecyl benzene sulfonic acid), cetyltrimethylammonium bromide (CTMAB), methylmorpholine (Methylmorpholine) and morpholine (Morpholine), the group consisting of dimethylaniline (Dimethylaniline) It may be one or two or more selected from. The initiator may be used alone, or a mixture of two or more different initiators may be used, and an initiator not exemplified above may be used together with the initiator. The initiator may serve to promote or control a polymerization reaction between the unsaturated fatty acid-based modifier and the sulfur. In an exemplary embodiment of the present invention, the content of the initiator may be 0.01 parts by weight or more and 2 parts by weight or less per 100 parts by weight of sulfur. In an exemplary embodiment of the present invention, the initiator may control the characteristics of the modified sulfur produced by changing the specific type of the applied initiator, the amount of addition, the input period, the reaction conditions, and the like.

In one embodiment of the present invention, the surfactant may be one or two or more selected from the group consisting of anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants.

The anionic surfactant includes sulfate-based anionic surfactants, sulfonate-based anionic surfactants, and other anionic surfactants. The sulfate-based anionic surfactants include alkyl sulfate, alkylester-sulfate, alkyl ether sulfate, and alkyl-ethoxy-ethersulfate. ); sulfated alkanolamide; glyceride sulfate and the like may be included, but is not limited thereto. The sulfonate-based anionic surfactant includes dodecyl benzene sulfonate including ABS (alkyl benene sulfonate) and LAS (linear alkyl benzene sulfonate); hydrotropes, short tail alkyl-benzene sulfonate; alpha-olefin sulfonates; lignosulfonate; A sulfo-carboxylic compound including sodium lauryl sulfoacetate may be included, but the present invention is not limited thereto. The other anionic surfactants include organo phosphored surfactants; It may include, but is not limited to, an alkyl amino acid including lauryl sarcosinate, sarcosine, and the like.

The cationic surfactant includes a linear alkyl-amine containing a fatty amine, a linear alkyl-ammonium containing a quaternary alkyl ammonium, and a thiol Diamine (linear diamine), n-dodecyl pyridinium chloride (n-dodecyl pyridinium chloride), imidazole (imidazole), morpholine compound (morpholine compound) and the like may be included, but is not limited thereto.

Examples of the nonionic surfactant include ethoxylated alcohol, alkylphenol, fatty acid ester, and nitrogen-based nonionic surfactant. Examples of the ethoxylated alcohol and alkyl phenol type nonionic surfactant include ethoxylated linear alcohol, ethoxylated alkyl phenol, and ethoxylated alkyl phenol. It may include, but is not limited to, ethoxylated thiol, nonylphenol, octylphenol, and the like. The fatty acid ester-based nonionic surfactant may include polyethoxy ester, glycerol ester, hexitol, cyclic anhydrohexitol ester, and the like, It does not limit this. The nitrogen-based nonionic surfactant includes ethoxylated amine, imidazole, cyclic alkyl-diamine, ethoxylated alkyl-amide, tertiary. It may include, but is not limited to, amine oxide (tertiary amine oxide).

The amphoteric surfactant may include amino propionic acid, imino propionic acid, quaternized compound, and the like, and examples of the quaternized compound include sulfobetaine. surfactants, and the like, but are not limited thereto.

In one embodiment of the present invention, when the surfactant is selected and applied according to the use of the modified sulfur, specific functionality required according to the use in the preparation of the modified sulfur may be improved.

In one embodiment of the present invention, the coupling agent may be one or more selected from the group consisting of a silane-based coupling agent, a titanate-based coupling agent, and a chromium-based coupling agent, and a surfactant used in the art can be used

The silane-based coupling agent includes a sulfide-based silane compound, a mercapto-based silane compound, a vinyl-based silane compound, an amino-based silane compound, a glycidoxy-based silane compound, a nitro-based silane compound, a chloro-based silane compound, a methacryl-based silane compound, and these compounds. Any one selected from the group consisting of a combination of may be applied, but is not limited thereto.

The titanate-based coupling agent is isoprosyltriisostearoyltitanate, isopropyl tridodecylbenzenesulfonyltitanate, isopropyltri(dioctylpyrophosphate)titanate, tetraisopropyldi(drideensylphos) Any one selected from the group consisting of phite) titanate, tetraisopropyl di(dioctylphosphite) titanate, tetraoctyloxytitanium (ditridensylphosphite), and combinations thereof may be applied, but is not limited thereto.

In one embodiment of the present invention, when the coupling agent is applied, the interfacial adhesion of the modified sulfur can be improved, and when mixed with a different material, the adhesion with the different material can be improved, and it can be advantageous for forming a composite material have.

In one embodiment of the present invention, the additive may be an inorganic or resin additive, specifically silica sand, diatomaceous earth, wollastonite, clay, chopped glass fiber, dye, pigment, aluminum sulfate, Water glass, Ca(OH) ₂ , zinc oxide, naphthalene, Mg(OH) ₂ , CaCl ₂ , Al(OH) ₃ , borax, CaSO _4.2H2O , Fe ₂ O ₃ , zeolite, carbon black, talc, carbon fiber, Clay, whisker, Na ₂ SO ₃ , MgSO _{4.7H 2} O, fly ash, acrylic emulsion, epoxy, latex, carbon fiber or sheet, steel fiber, liquid mineral, titanium dioxide, fibrous filler, It may be one or two or more selected from the group consisting of a combination of fibrous particles, flaky particles and crushed recycled waste. In an exemplary embodiment of the present invention, the additive may be 0.1 parts by weight or more and 30 parts by weight or less based on 100 parts by weight of the sulfur.

In an exemplary embodiment of the present invention, as the crosslinking agent, a sulfur-based crosslinking agent, an organic peroxide, a resin crosslinking agent, and a metal oxide such as magnesium oxide may be used. As the sulfur crosslinking agent, elemental sulfur or a vulcanizing agent for generating sulfur, for example, amine disulfide, polymeric sulfur, etc. may be used, but is not limited thereto. The organic peroxide is benzoyl peroxide, dicumyl peroxide, di-t-butyl peroxide, t-butylcumyl peroxide, methyl ethyl ketone peroxide, cumene hydroperoxide, 2,5-dimethyl-2,5-di ( t-Butylperoxy)hexane, 2,5-dimethyl-2,5-di(benzoylperoxy)hexane, 2,5-dimethyl-2,5-di(t-butylperoxy)hexane, 1,3- Bis(t-butylperoxypropyl)benzene, di-t-butylperoxy-diisopropylbenzene, t-butylperoxybenzene, 2,4-dichlorobenzoyl peroxide, 1,1-dibutylperoxy-3 Any one selected from the group consisting of ,3,5-trimethylsiloxane, n-butyl-4,4-di-t-butylperoxyvalerate, and combinations thereof may be used, but is not limited thereto.

In one embodiment of the present invention, the dispersant may be used to improve miscibility when mixing the modified sulfur and the surfactant, the modified sulfur and the coupling agent, or the modified sulfur and the reinforcing material. The dispersant can be applied as long as it can improve the degree of dispersion when mixing the modified sulfur with a surfactant, a coupling agent, a reinforcing material, etc. It can act as a dispersant to the extent that it serves to improve the

In one embodiment of the present invention, the dispersing agent, polyvinylpyrrolidone, polyethyleneimine, polyacrylic acid, carboxymethylcellulose, polyacrylamide, polyvinyl alcohol, polyethylene oxide, starch, gelatin, and combinations thereof Any one of the polymer dispersants selected from the group may be applied, but is not limited thereto.

In one embodiment of the present invention, the vegetable oil, cypress oil, lemon oil, rose oil, lavender oil, sunflower seed oil, corn oil, mustard oil, castor oil, olive oil, cottonseed oil, macadamia (Macadamia integrifolia) It may be selected from the group of oils extracted from natural vegetable oils, such as oil, linseed oil, pine oil, hippophae rhamnoides oil, lunaria biennis oil, and canola oil. In one embodiment of the present invention, the vegetable oil can be appropriately adjusted in content according to the use, for example, it can be added in an amount of 0.1 parts by weight or more and 10 parts by weight or less based on 100 parts by weight of the sulfur. have.

In one embodiment of the present invention, one or two or more selected from the group consisting of the initiator, surfactant, coupling agent, catalyst, additive, crosslinking agent, dispersant and vegetable oil is the modified sulfur and / or the sulfur And it may be mixed under a solvent together with an unsaturated fatty acid-based modifier.

As the solvent, a conventional solvent may be applied as long as it does not interfere with the polymerization reaction of the modified sulfur, but is not limited thereto. Specifically, the solvent is water, an aromatic hydrocarbon-based solvent, an aliphatic hydrocarbon-based solvent, an ether-based solvent, an alcohol-based solvent, a polyol solvent, an amide-based solvent, an acetate-based solvent, a non-aqueous inorganic solvent, an amine-based solvent, an ester-based solvent , may be one or two or more selected from the group consisting of ketone-based solvents and sulfone-based solvents.

Examples of the aliphatic or aromatic hydrocarbon-based solvent include toluene, xylene, aromasol, chlorobenzene, hexane, heptane, octane, dodecane, cyclohexane, decane, tetradecane, and hexadecane. It may be any one selected from the group consisting of decane, octadecane, octadecene, nitrobenzene, o-nitrotoluene, anisole, mesitylene, and combinations thereof, but is not limited thereto.

Examples of the ether-based solvent include diethyl ether, dipropyl ether, dibutyl ether, dioxane, tetrahydrofuran, diisobutyl ether, isopropyl ether, octyl ether, tri( Ethylene glycol) may be any one selected from the group consisting of dimethyl ether and combinations thereof, but is not limited thereto.

Examples of the alcohol-based solvent include methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, isobutanol, hexanol, isopropyl alcohol, ethoxyethanol, ethyl lactate, octanol isopropyl alcohol, Ethylene glycol monomethyl ether, benzyl alcohol, 4-hydroxy-3-methoxy benzaldehyde, isodeconol, butylcarbitol, terpineol, alpha terpineol, beta-terpineol, cineol and It may be any one selected from the group consisting of combinations thereof, but is not limited thereto.

Examples of the polyol solvent include glycerol, glycol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, butanediol, hexylene glycol, 1,2-pentadiol, 1,2-hexadiol , glycerin, polyethylene glycol, polypropylene glycol, ethylene glycol monomethyl ether (methyl cellusolve), ethylene glycol monoethyl ether (ethyl cellusolve), ethylene glycol monobutyl ether (butyl cellusolve), diethylene glycol monoethyl ether, It may be any one selected from the group consisting of diethylene glycol monobutyl ether and combinations thereof, but is not limited thereto. [0128] The amide-based solvent may be any one selected from the group consisting of N-methyl-2-pyrrolidone (NMP), 2-pyrrolidone, N,N-dimethyl acetamide, and combinations thereof, It does not limit this.

Examples of the amine solvent include primary amines such as propylamine, n-butylamine, hexylamine, and octylamine, secondary amines such as diisopropylamine and di(n-butyl)amine, trioctylamine, and tri-n - Any one selected from the group consisting of tertiary amines such as butylamine, ethylamine, propylamine, butylamine, hexylamine, octylamine, trioctylamine, etc., cyclic amine, aromatic amine, and combinations thereof may, but is not limited thereto.

Examples of the ester solvent include PEGMEA, ethyl acetate, n-butyl acetate, γ-butyrolactone, 2,2,4-trimethylpentanediol-1,3-monoisobutyrate, butyl carbitol acetate, butyl oxalate, di It may be any one selected from the group consisting of butyl phthalate, dibutyl benzoate, butyl cellosolve acetate, ethylene glycol diacetate, ethylene glycol diacetate, and combinations thereof, but is not limited thereto.

The ketone-based solvent is from the group consisting of acetone, methyl ethyl ketone, methyl isobutyl ketone, 1-methyl-2-pyrrolidinone, cyclohexanone, and combinations thereof. It may be any one selected, but is not limited thereto.

The amide solvent may be any one selected from the group consisting of N-methyl-2-pyrrolidone (NMP), 2-pyrrolidone, N,N-dimethyl acetamide, and combinations thereof, but is not limited thereto. does not

The sulfone-based solvent may be any one selected from the group consisting of diethylsulfone, tetramethylene sulfone, and combinations thereof, but is not limited thereto.

As the acetate-based solvent, any one acetate-based solvent selected from ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, and combinations thereof may be used.

Carbon disulfide, liquid ammonia, etc. may be used as the non-aqueous inorganic solvent, but is not limited thereto.

Process for the production of reformed sulfur

In one embodiment of the present invention, the modified sulfur may be prepared by the following manufacturing method. Specifically, a first step of mixing sulfur and an unsaturated fatty acid-based modifier; a second step of putting the mixture into a reactor and melting it by heating it to a temperature of 100°C or higher and 130°C or lower; a third step of raising the temperature of the melt to a temperature of 130 °C or higher and 205 °C or lower; and a fourth step of terminating the reaction by terminating the heating;

In one embodiment of the present invention, the modified sulfur produced by the manufacturing method may be equally applied as long as it does not contradict the matters mentioned in the above-described modified sulfur.

In an exemplary embodiment of the present invention, in the first step of mixing the sulfur and the unsaturated fatty acid-based modifier, the unsaturated fatty acid-based modifier is used in an amount of 10 parts by weight or more, 450 parts by weight or less, based on 100 parts by weight of the sulfur. Mix.

In addition, in one embodiment, in the first step, the second modifier may be further included in the above-described content range.

In another embodiment, one or two or more selected from the group consisting of the initiator, surfactant, coupling agent, catalyst, additive, crosslinking agent, dispersant and vegetable oil may be further included in the above-described content range .

In one embodiment, the first step may be carried out at a temperature of room temperature (Room Temperature; about 15 ℃ to 25 ℃) or higher.

In an exemplary embodiment of the present invention, the viscosity before heating of the mixture of sulfur and the unsaturated fatty acid-based modifier prepared in the first step is 0 cP at room temperature.

In one embodiment of the present invention, the second step may be melted by heating to a temperature of 100 ℃ or more, 130 ℃ or less. Specifically, the second step can be melted by heating to an internal temperature of about 130 ℃, a step in which the polymerization reaction starts.

Specifically, in the second step, the mixture is put into a polymerization reactor, the temperature is set to about 120° C. with a temperature control device of the polymerization reactor, the mixture is administered to the polymerization reactor, and melt polymerization can be started. . In addition, in an exemplary embodiment of the present invention, after the mixture of the second step becomes a liquid phase, a third step of raising the temperature of the liquid mixture may be performed.

In an exemplary embodiment of the present invention, the third step of raising the temperature of the melt may be performed by continuously raising the temperature of the melt to a temperature of 130 ℃ or more and 205 ℃ or less. Specifically, the third step of raising the temperature of the melt may be performed by continuously heating the melt to a temperature of 130 °C or higher and 205 °C or lower. More specifically, in the third step, when the melt in the second step is converted to a liquid state, the temperature of the polymerization reactor may be gradually increased from about 130°C.

In one embodiment, in the third step of raising the temperature of the melt, the temperature difference between the external temperature of the reactor and the melt is maintained at 10° C. or less and the temperature is raised. Specifically, the temperature of the polymerization reactor may be gradually increased from about 130° C. to 2° C. to 3° C. in steps of 2° C. to 3° C. while the temperature inside the reactor and the outside temperature have little deviation (about 10° C. or less). When the temperature increase rate is rapidly increased, the internal temperature of the reactor is rapidly increased due to the exothermic reaction of sulfur and the modifier, making temperature control difficult and carbonization may occur.

When the reaction time of the third step is adjusted to be long, it is possible to provide modified sulfur having high viscosity properties that are rubberized. In this case, the modified sulfur can also be used for waterproofing and rust prevention by using a diluent. In addition, in the case of producing high-viscosity modified sulfur in a solid or powder form, it can be added at the time of manufacturing roads and concrete structures to provide properties such as adhesion, waterproofing, rust prevention, high adhesion, and chemical resistance, and the high-viscosity It can be applied to a variety of products such as quick fix repair agent, quick fix water repellent agent, waterproof sheet, antibacterial silicone, paint, waterproof and tile adhesive.

In one embodiment of the present invention, the fourth step is a step of terminating the reaction of the melt by terminating the heating. Specifically, in the fourth step, when the temperature of the melt is 160° C. or higher, the state and viscosity of the melt are measured three or more times per hour to terminate the reaction according to the use. At this time, the viscosity of the melt inside the polymerization reactor is 100 cP or less, and the fluidity is very strong. In order to check the state of the melt, some samples are taken out from the reactor and left at room temperature for about 5 minutes. You can decide whether or not to quit.

Specifically, in the fourth step, when the reaction is terminated at 160° C. to 175° C. and the melt is left at room temperature for about 5 minutes, the prepared modified sulfur is in a liquid form having a viscosity of 6,000 cP or more and 15,000 cP or less. can be In addition, when the reaction is terminated at 180 ° C. to 205 ° C. and the melt is left at room temperature for about 5 minutes, the prepared modified sulfur may be in a liquid form having a viscosity of 6,000 cP or more and 25,000 cP or less, and in this case, continue at room temperature If left in a solid state, it may harden. The modified sulfur obtained by terminating the reaction at 160 °C to 175 °C can be used in liquid form for asphalt at room temperature and for modified sulfur polymer concrete. In addition, the modified sulfur obtained by terminating the reaction at 180° C. to 205° C. is a high-viscosity liquid or solid phase, and can be used for waterproof or rust-preventive coatings.

In one embodiment of the present invention, the modified sulfur prepared as described above may have radioactivity, or may include a network structure or a honeycomb structure.

Specifically, the end of the reaction is the point at which a fibrous or plate-shaped microstructure is observed due to the elevated high adhesiveness of the melt (when a small rod is immersed in a sample, it does not break like a thread (3 cm or more). This can be explained by the phenomenon of stretching into several strands (more than 1cm) as thin as a thread when the finger is put on the disposable silicone glove fingers.

In addition, the reaction termination time may be between the time point at which the reaction is radioactive and the point at which the rubberization of the stage before carbonization proceeds, and the modified sulfur includes a microstructure shape of fibrous, honeycomb structure, and network structure, or radioactive properties. may be having

In an exemplary embodiment of the present invention, the method further includes the step of aging after the third step and before the fourth step, wherein the aging step is performed at a temperature of 40° C. or higher for the melt. When the aging step is further included, the reaction termination time of the heated melt in the third step may be adjusted just before it has radioactivity, and the use may be adjusted according to the viscosity of the modified sulfur.

Specifically, the aging may be performed at a temperature of 40 °C or higher and 120 °C or lower. More specifically, the aging may start at a temperature of about 40 °C and be performed at an aging temperature of about 120 °C or less. In the aging step, the viscosity may be adjusted according to the use of the modified sulfur.

In one embodiment of the present invention, the manufacturing method of the modified sulfur, that is, the first to fourth steps, may be about 6 hours to about 18 hours, but may vary depending on the amount of the mixture and the structure or material of the polymerization reactor. can

In the method for producing the modified sulfur, the mixture of sulfur and the modifier undergoes a second polymerization starting step, and a polymerization reaction is gradually made, and in the third step, the melt is yellow, light brown, dark brown, opaque You can go through the process of changing in the order of one black. An initiator may be added between the time the color of the mixture changes, or another initiator may be added just before the reaction is terminated.

In an exemplary embodiment of the present invention, by controlling the mixture added in the first step, the temperature and time of the polymerization reaction, and the reaction termination time according to the use of the modified sulfur, the shape and/or viscosity of the radioactivity can be adjusted according to the use. have.

In addition, in one embodiment of the present invention, according to the use of the reformed sulfur, the input time, type, and amount of the initiator may be adjusted to control the characteristics of the reformed sulfur.

modified sulfur binder

In an exemplary embodiment of the present invention, the modified sulfur binder includes the above-described modified sulfur, and may optionally further include an additional additive. The additional additive may be at least one of the aforementioned initiators, surfactants, coupling agents, catalysts, crosslinking agents, dispersants, and vegetable oils, but is not limited thereto, and additives used in the art according to the use of the modified sulfur binder may be further included.

In one embodiment of the present invention, the modified sulfur binder may be made of the above-described modified sulfur.

In one embodiment of the present invention, the modified sulfur binder may be 1 part by weight to 30 parts by weight based on 100 parts by weight of the cement. Specifically, the modified sulfur binder may be used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the cement.

When the content of the modified sulfur binder exceeds the above range, excessively rapid hardening may occur when mixing mortar or concrete, thereby reducing work efficiency. In addition, when the content of the modified sulfur binder is less than the above range, the effect due to the addition of the modified sulfur may be insignificant.

In an exemplary embodiment of the present invention, the modified sulfur binder may be in a powder form, a gel form, or a liquid form.

In an exemplary embodiment of the present specification, the modified sulfur may be in a liquid phase, and accordingly, the modified sulfur binder may be in a liquid phase. In this case, miscibility and dispersibility with the material is excellent, a separate heating process is not required when mixing with the hydraulic material, and excellent reforming effect can be obtained even with a small amount. However, if necessary, the modified sulfur may be subjected to various modifications, and may be applied in various forms, for example, solid, pellet, powder, and the like.

When the modified sulfur binder is in a gel form, it may be prepared by mixing and stirring liquid modified sulfur and water. In addition, when the modified sulfur binder is in a powder form, it may be prepared by rapidly cooling a liquid modified sulfur having high viscosity and then crushing it.

Modified sulfur mortar composition

The modified sulfur mortar composition according to the present invention further comprises cement together with the above-described modified sulfur binder.

In one embodiment of the present invention, the cement may be a cement selected from the group consisting of Portland cement, polymer cement, crude steel cement, crude cement mortar, fast cement mortar, and super fast cement mortar. The cement included in the modified sulfur mortar composition according to the present invention is not limited to the cement, and various types of cement used in the art may be appropriately applied and used according to the purpose.

The modified sulfur mortar composition according to the present invention can be constructed with a fast curing time, and can implement high strength and adhesion compared to a conventional mortar composition. Due to these characteristics, the modified sulfur mortar composition can achieve the same effect even with a small amount of cement at least 10% or more than the amount of conventional cement used.

In addition, the modified sulfur mortar composition according to the present invention may further include water, and may be used as a hydraulic mortar composition. In this case, the water content may be appropriately adjusted according to the working environment and use.

In an exemplary embodiment of the present invention, the modified sulfur mortar composition may further include additional components optionally according to the intended use and purpose.

In one embodiment of the present invention, as the additional component, the modified sulfur mortar composition may further include an eco-friendly material waste resource auxiliary material, and the eco-friendly material waste resource auxiliary material is cypress sawdust, juniper sawdust, oak sawdust , wood by-products such as pine sawdust, and/or plant-derived by-products such as leaves, seeds, fruit husks, and the like.

In one embodiment of the present invention, as the additional constituents, fly ash, silica fume, water reducing agent, retarder, defoaming agent, blast furnace slag, loess, bentonite, glass chopped (chopped glass fiber), calcium sulfate, calcium carbonate, waste At least one admixture selected from the group consisting of tire powder and waste glass powder may be further included. For example, the modified sulfur mortar composition further includes loess, so it can be used as a loess brick, and strength and elasticity can be improved by using waste materials such as stone dust, waste tire powder and waste glass powder as a filler. have. The admixture may be used without limitation as long as it is generally used in the art, and admixtures of types not exemplified above may also be used. In addition, the content of the admixture may be appropriately adjusted according to the purpose of use.

In addition, in an exemplary embodiment of the present invention, the modified sulfur mortar composition may further include fine aggregates having a particle diameter of 1 to 10 mm if necessary.

The modified sulfur mortar composition may be used as a waterproof material or a rust preventive material. Specifically, while conventional waterproofing and rust-preventing materials have problems due to low chemical resistance and low adhesion, in addition to problems of reduced workability and environmental hazards due to the repeated coating film formation process, the modified sulfur mortar composition is such Problems can be improved or overcome.

Furthermore, since the modified sulfur mortar composition also has antibacterial properties, it can be applied to apartment balconies, etc.

In addition, the modified sulfur mortar composition may be used as a substitute for an epoxy fiber-reinforced plastic (FRP) due to the properties of the modified sulfur binder having a rubberized high viscosity characteristic. That is, the modified sulfur mortar composition can be used for construction and repair/reinforcement of structures such as concrete structures or tunnel structures.

The modified sulfur mortar composition can be effectively applied to the field of shotcrete used in tunnel excavation construction or petroleum excavation construction by using a small rebound effect and waterproof properties with a strong adhesive force. In this case, it is possible to omit the tarpaulin work that requires a large cost and work time, and the repair and reinforcement work inside the old existing tunnel can be completed in a short time due to the fast curing time. Furthermore, there is an advantage in that waste aggregates from tunnel construction can be recycled.

Furthermore, since the modified sulfur binder contains amphiphilic modified sulfur, it has both hydrophobic and hydrophilic characteristics, and can utilize these advantages. Specifically, by using the hydrophobic property, it can be applied with cement in liquid form at room temperature and used for road pavement and repair reinforcement and polymer concrete composition without preheating and heating processes. In addition, using the hydrophilic property, water and aggregate, the modified sulfur binder and hydraulic material, for example, a small amount of water reducing agent, defoaming agent, and releasing agent, are added and mixed at room temperature to perform general Portland concrete work method without preheating and heating process. can be used

Modified Sulfur Concrete Composition

Another embodiment of the present invention provides a modified sulfur concrete composition comprising the modified sulfur mortar composition. Specifically, the modified sulfur mortar composition; fine aggregate; coarse aggregate; And it provides a modified sulfur concrete composition comprising a compounding water.

According to an exemplary embodiment of the present invention, the fine aggregate and/or coarse aggregate are recycled industrial waste, river sand, crushed stone, coal ash, sea sand, silica sand, gravel, silica, quartz powder, lightweight aggregate, clay mineral, glass powder and these, respectively. It may be any one selected from the group consisting of a combination of.

According to an exemplary embodiment of the present invention, the modified sulfur concrete composition may use waste resources as aggregates in addition to general aggregates. For example, at least one recycled material among waste asphalt concrete, waste urethane, waste tires, waste glass, and waste aggregate may be applied as coarse aggregate or fine aggregate.

The fine aggregate may have a particle diameter of 1 to 10 mm, and the coarse aggregate may have a particle diameter of 10 to 18 mm.

In an exemplary embodiment of the present invention, based on 100 parts by weight of the modified sulfur concrete composition, the total content of the fine aggregate and the coarse aggregate may be 70 parts by weight or more and 95 parts by weight or less.

The modified sulfur concrete composition may be a hydraulic concrete composition, and may have hydrophilic properties that can be dissolved in water at room temperature. Therefore, the concrete composition can be dissolved in water and melt-mixed with a water reducing agent, a mold release agent, an antifoaming agent and other modifiers, or the modified sulfur concrete composition is first melted and then a water reducing agent, a releasing agent, an antifoaming agent and other modifiers are melted It can be used by mixing.

In one embodiment of the present invention, the modified sulfur concrete composition may further include a binder. The binder, for example, natural liquid rubber, latex, lacquer, as well as epoxy (Epoxy), MMA (Methyl Methacrylate) resin may be used as the binder.

Since the modified sulfur concrete composition according to an exemplary embodiment of the present invention is thermoplastic like conventional asphalt, it can be uniformly mixed through the process of melt mixing.

The concrete composition may further include a filler. The content of the filler may be 1 part by weight or more, 60 parts by weight or less, or 1 part by weight or more, and 25 parts by weight or less, based on 100 parts by weight of the concrete composition.

In the present specification, the filler may be one or more selected from the group consisting of fibrous fillers, metal fibers, flaky particles, fibrous particles, plastic fiber fibers, and fibrous fillers.

The hydraulically modified sulfur concrete composition includes various concrete structures, infrastructure of general buildings, infrastructure of nuclear power plants, concrete piles, sewage pipes, agricultural water pipes, dams, underwater concrete structures and breakwaters in the sea, tetrapods, concrete structures in the railway industry, concrete It can be used to manufacture railway sleepers, etc.

In particular, the hydraulically modified sulfur concrete composition has almost no shrinkage, so it can be constructed for a long time without taking a certain interval like the construction of conventional concrete, and has characteristics such as high strength as well as chemical resistance, water resistance, rust resistance, and salt resistance. Excellent effect can be realized when applied to a concrete composition with strong resistance to shrinkage or cracking due to a large temperature difference in a cold region.

It has strong resistance to freezing and thawing at sub-zero temperatures due to the exothermic phenomenon of the modified sulfur properties.

In addition, the modified sulfur concrete composition contains a modified sulfur binder having elasticity, and when it is mixed with carbon materials such as waste tires and waste urethane, it can replace latex mixed modified concrete (LMC Concrete) at a low cost. It also has advantages.

Modes for carrying out the invention

Hereinafter, examples will be given to describe the present invention in detail. However, the embodiments according to the present invention may be modified in various other forms, and the scope of the present invention is not to be construed as being limited to the embodiments described below. The embodiments of the present specification are provided to more completely explain the present invention to those of ordinary skill in the art.

[Preparation Example 1] Preparation of liquid modified sulfur

At room temperature, 100 g of sulfur and 100 g of oleic acid were added to the polymerization reactor. The temperature of the polymerization reactor was set to about 120° C. with the temperature controller, and the blades of the reactor were stopped until the sulfur and other mixtures became sufficiently liquid. When the mixture was converted to liquid, the blades were rotated to proceed with melt polymerization. When the melt was converted to a liquid state, the temperature of the polymerization reactor was gradually set to about 135 °C in steps of 2 °C to 3 °C while increasing the temperature of the polymerization reactor so that the internal temperature and external temperature of the compound had little deviation (about 5 °C or less). The reaction was terminated at a temperature of the melt at 160° C. to 175° C. to obtain a liquid modified sulfur having a viscosity of about 25,000 cP.

[Example 1] Preparation and use of modified sulfur in gel form

After adding 10 kg of the reformed sulfur liquid obtained in Preparation Example 1 and 10 kg of water to a 50 liter ribbon mixer, mixing was continued for 10 minutes at room temperature. Mixing continued, and water and liquid modified sulfur were mixed and changed to a gel state, and when about 20 minutes had elapsed after mixing, it was confirmed that the water was almost gone and transformed into a perfect gel state. Furthermore, it was confirmed that light gray concrete was formed as a result of applying the gel-like modified sulfur prepared in this way as a binder, mixing it with cement and hardening. In other words, it was confirmed that by preparing the modified sulfur in the form of a gel as needed, the applicability to the field could be further improved.

[Example 2] Preparation and use of powdered modified sulfur

At room temperature, 100 g of sulfur and 100 g of oleic acid were added to the polymerization reactor. The temperature of the polymerization reactor was set to about 120° C. with the temperature controller, and the blades of the reactor were stopped until the sulfur and other mixtures became sufficiently liquid. When the mixture was converted to liquid, the blades were rotated to proceed with melt polymerization. When the melt was converted to a liquid state, the temperature of the polymerization reactor was gradually set to about 135 °C in steps of 2 °C to 3 °C while increasing the temperature of the polymerization reactor so that the internal temperature and external temperature of the compound had little deviation (about 5 °C or less). The state and viscosity of the melt were measured at a temperature of 180° C. to 205° C. at least three times per hour, and the reaction was terminated when the viscosity became 25,000 cP or more to obtain a liquid modified sulfur.

The liquid modified sulfur obtained in Preparation Example 2 was rapidly cooled to about -20 ° C. or less to solidify, and then cooled and crushed into a powder having a size of 180 mesh or less using a cryogrinder of Powteq's Cryogrinder to prepare powdery modified sulfur. .

5 g of powdered modified sulfur prepared as described above, 80 g of super-hard cement, 5 g of fly ash, 5 g of silica fume, and 5 g of blast furnace slag are mixed, put in a 1 liter plastic container, mixed for 5 minutes, and modified sulfur A mortar composition was prepared. The modified sulfur mortar composition prepared in this way was mixed in the same proportion as that of cement and placed in an oven at a temperature of 80 °C for 5 hours. In addition, as a result of mixing the modified sulfur mortar composition with water and using a mixer at room temperature, it was confirmed that the dark gray mortar was maintained without agglomeration. Through this, it was confirmed that there was no problem in using the modified sulfur cement mortar composition in which powdery modified sulfur was applied as a binder, and furthermore, it was confirmed that it can be applied to various remitals according to the place of use by mixing it with cement and fine powder admixture. there was.

[Example 3] - Antimicrobial test

A modified sulfur mortar was prepared by using the liquid modified sulfur prepared as in Preparation Example 1 as a binder. Specifically, 5 g of modified sulfur, 300 g of sand, and 150 g of foamed glass were mixed with water to prepare a 5 cm × 5 cm × 1 cm (width × length × height) specimen, and after coating mold spores on the surface 4 Mold growth results after weeks were measured. Specifically, this test was conducted by requesting KCL (Korea Living Environment Research Institute) in accordance with ASTM D 6329-98 (2015) regulations. As a result of the test, all four specimens showed an antibacterial detection value of 1.0, which means that no fungal growth occurred.

According to the above results, it can be seen that articles manufactured using the modified sulfur mortar composition according to the present invention have high antibacterial properties, and the exterior walls, windows, or basements of buildings using the modified sulfur mortar or modified sulfur concrete according to the present invention It can be seen that, when constructing the etc., it is possible to suppress the growth of mold.

[Example 4] - Application of modified sulfur mortar composition for repair and waterproofing purposes

Using the modified sulfur prepared as in Preparation Example 1 as a binder, a modified sulfur mortar composition was prepared with the composition shown in Table 1 below.

In order to repair the cracked concrete floor cracked to a thickness of 2 cm, the cracked cracks were repaired with the modified sulfur mortar composition prepared as described above. Curing proceeded rapidly within 5 minutes after the start of plastering, and curing was completed after 2 hours. In order to check the strength of the repaired part, the tip was struck with a hammer, but the repaired part did not come off and only a dent phenomenon appeared, confirming that it had very good adhesion.

In contrast, when the same test was performed with a general cement mortar composition prepared with a composition except for the modified sulfur binder in Table 1, the repaired part cracked and separated from the floor as soon as it was struck with a sledgehammer.

As a result of the above, that is, due to fast curing and high adhesion, it can be seen that the modified sulfur mortar composition according to the present invention can be very usefully used in situations where repair is urgently needed due to cracks in concrete.

[Example 5] - Heat resistance test

After preparing a modified sulfur mortar composition having the same composition as in Example 4, test specimens each having a thickness of 3 cm were prepared using these. Then, a combustion test was performed at a temperature of about 1,800° C. for 1 minute using an oxygen welding machine. As a result of the test, it was confirmed that it was non-combustible, and surface cracking did not occur.

[Example 6]

Using the modified sulfur prepared as in Preparation Example 1 as a binder, a modified sulfur concrete composition was prepared as shown in Table 2 below, and a concrete specimen was prepared and cured for 28 days. Compressive strength test, flexural strength A bending strength test, a water absorption test, a chemical resistance test, an ions penetration test, and an adhesive strength test were performed. For control, a comparative specimen was prepared in the same manner using the composition except for the modified sulfur binder in the composition of Table 2 below, cured for 28 days, and the same test was performed.

1 shows the compressive strength test results according to Example 6. According to FIG. 1, it was confirmed that the compressive strength of the specimen (ESLI MS) according to Example 6 was significantly higher than that of the comparative specimen (OPC).

2 shows the results of the moisture absorption rate test according to Example 6. The moisture absorption rate test according to FIG. 2 shows the results of measuring the moisture absorption rate 3 months after the specimen is immersed in a plastic container containing water and sealed after curing. Specifically, according to FIG. 2, it was confirmed that the specimen according to Example 6 (ESLI MS) exhibited a significantly lower water absorption rate compared to the comparative specimen (OPC).

3 shows the chemical resistance test results according to Example 6. The chemical resistance test according to FIG. 3 was performed after completely precipitating the specimen after curing in 13% calcium chloride (CaCl ₂ ), 13% sodium chloride (NaCl) and 25% sulfuric acid (H ₂ SO ₄ ), respectively, after 3 months The surface condition was checked. Specifically, according to FIG. 3 , it could be confirmed that the specimen (ESLI MS) according to Example 6 had little change in the surface state, unlike the comparative specimen (OPC).

4 shows the salt water resistance test results according to Example 6. The salt water resistance test according to FIG. 4 shows that the specimen after curing is completely precipitated in 13% sodium chloride (NaCl) and after 3 months, the amount of charge is measured by applying a current to the specimen to confirm the degree of ion penetration. Specifically, according to FIG. 4, the specimen according to Example 6 (ESLI MS) exhibited a significantly lower amount of charge compared to the comparative specimen (OPC), confirming that ion penetration hardly occurred.

5 shows the flexural strength test results according to Example 6. The flexural strength test according to FIG. 5 was measured according to the KS standard for measuring the flexural strength of concrete by preparing a specimen with a size of 10 cm × 40 cm × 10 cm (width × length × thickness). Specifically, according to FIG. 6 , it was confirmed that the specimen according to Example 5 (ESLI MS) exhibited about twice as high flexural strength as compared to the comparative specimen (OPC).

6 shows the results of the adhesion test according to Example 6. The adhesion test according to FIG. 6 did not apply a separate mold release agent to the concrete specimen mold, and after introducing the prepared concrete composition, it deserted 3 days later and confirmed the specimen remaining in the mold. Specifically, according to FIG. 7, it was confirmed that the specimen (ESLI MS) according to Example 6 was firmly attached to the bottom of the specimen mold and hardened, unlike the comparative specimen (OPC). That is, in the case of the comparative specimen (OPC), it was easily removed from the specimen mold even in the absence of a release agent, whereas in the specimen according to Example 6 (ESLI MS), it was confirmed that the remaining specimen was firmly attached due to strong adhesion with the iron plate. there was.

Claims (9)

cement; and a modified sulfur binder containing modified sulfur in which sulfur and an unsaturated fatty acid-based modifier are melt-polymerized;
The modified sulfur does not contain a dicyclopentadiene-based modifier,
The unsaturated fatty acid-based modifier is melt-polymerized with the sulfur in an amount of 10 parts by weight or more and 450 parts by weight or less based on 100 parts by weight of the sulfur,
The content of the modified sulfur binder is 1 part by weight to 30 parts by weight based on 100 parts by weight of the cement,
The cement is a cement selected from the group consisting of Portland cement, polymer cement, crude steel cement, crude cement mortar, fast cement mortar and super fast cement mortar, modified sulfur mortar composition. delete The method according to claim 1,
The unsaturated fatty acid-based modifier is erucic acid, palmitoleic acid, elaidic acid, myristoleic acid, linoleic acid, arachidonic acid) , gondoic acid, oleic acid, eicosapentaenoic acid, docosahexaenoic acid DHA, α-linolenic acid and γ-linolenic acid (γ -linolenic acid, GLA) characterized in that it comprises at least one selected from the group consisting of, modified sulfur mortar composition. delete The method according to claim 1,
The modified sulfur is a modified sulfur mortar composition, characterized in that it further comprises at least one selected from an initiator, a surfactant, a coupling agent, a catalyst, a crosslinking agent, a dispersant, and a vegetable oil. The method according to claim 1,
The modified sulfur binder is a powder, gel or liquid, modified sulfur mortar composition, characterized in that. delete The method according to claim 1,
At least one selected from the group consisting of fly ash, silica fume, water reducing agent, retarder, defoaming agent, blast furnace slag, loess, bentonite, chopped glass fiber, calcium sulfate, calcium carbonate, waste tire powder and waste glass powder A modified sulfur mortar composition, characterized in that it further comprises an admixture. A modified sulfur mortar composition according to claim 1; fine aggregate; coarse aggregate; and a compounding water, the modified sulfur concrete composition.

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