TW201927722A - Hydraulic composition additive, and method for preparing hydraulic composition - Google Patents

Abstract

Provided is a hydraulic composition additive that is capable of increasing the initial age of a cured product obtained by curing a prepared hydraulic composition. The hydraulic composition additive contains a compound A represented by formula (1), and/or a salt thereof. (In formula (1), X represents a hydrogen atom or a hydroxy group.).

Description

Additive for hydraulic composition and method for preparing hydraulic composition

The present invention relates to an additive for a hydraulic composition, and more specifically, to an additive for a hydraulic composition that can increase the strength of the initial wood age of a cured body obtained by curing the prepared hydraulic composition.

The hydraulic composition is obtained by kneading a hydraulic bonding material with water and the like, filling the mold frame and curing it, and then releasing the mold from the mold frame to obtain a cured body. Among them, concrete products are made by kneading materials such as cement, water, aggregate, and dispersant, and casting them in a mold frame to harden them. Increasing the strength of the initial wood age relates to the ability to make more concrete products using the same formwork. Therefore, it is required to shorten the time to reach the strength capable of being demolded after the concrete is cast. Various additives have been studied so far, and inorganic salts such as calcium chloride, nitrite, and nitrate (for example, Non-Patent Document 1), glycerol, and alkanolamines (for example, Patent Documents 1 and 2) have been disclosed.

[Previous Technical Literature]

Patent literature

Patent Document 1: Japanese Patent Application Laid-Open No. 2009-256201

Patent Document 2: Japanese Patent Application Laid-Open No. 2011-236127

Non-patent literature

Non-Patent Literature 1: Yuzawa Shiki et al., "Development and Latest Technology of Concrete Mixtures", published by CMC Co., Ltd., 1995

Because calcium chloride has corrosion problems when used as reinforced concrete, its use is limited, and nitrite or nitrate may be added in a large amount. Although the strength of the initial wood age can be increased by alkanolamine or glycerol, it is required to further increase the strength of the initial wood age.

The problem to be solved by the present invention is to improve the early strength and obtain the strength required for demolding in a shorter time. Specifically, the release strength is secured by curing at 20 ° C. for about 24 hours of strength.

As a result of studies conducted by the inventors of the present invention to solve this problem, it was found that the additive for a hydraulic composition containing a specific organic compound is suitable for the present invention. According to the present invention, the following additives for a hydraulic composition and a method for preparing a hydraulic composition are provided.

[1] An additive for a hydraulic composition, which contains the compound A and / or a salt thereof represented by the following formula (1).

In the above formula (1), X represents a hydrogen atom or a hydroxyl group.

[2] The additive for a hydraulic composition according to [1], which further contains the following compound B.

Compound B: selected from ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethanolamine, One or more of the group consisting of diethanolamine, triisopropanolamine, and diisopropanolamine

[3] The additive for hydraulic composition according to [1] or [2], which further contains a dispersant for hydraulic composition.

[4] The additive for a hydraulic composition according to [3], wherein the dispersant for the hydraulic composition is a polycarboxylic acid-based dispersant or an aromatic sulfonic acid-based compound.

[5] A method for preparing a hydraulic composition, which comprises adding an additive for a hydraulic composition according to any one of [1] to [4] in the following manner: with respect to 100 parts by mass of the hydraulic composition The hydraulic bonding material is such that the ratio of the compound A in the additive for the hydraulic composition is 0.001 to 1.0 part by mass.

[6] The method for preparing a hydraulic composition according to [5], wherein the ratio of the compound A is from 0.05 to 0.8 parts by mass relative to 100 parts by mass of the hydraulic bonding material.

The additive for a hydraulic composition of the present invention can increase the strength of the initial wood age of the hardened body obtained by curing the prepared hydraulic composition. Therefore, the additive for a hydraulic composition according to the present invention can improve the early strength and obtain the strength required for demolding in a shorter time.

Embodiments of the present invention will be described below. However, the present invention is not limited to the following embodiments. Therefore, as long as it does not deviate from the meaning of this invention, it should be understood that the following implementation aspects can be suitably changed, improved, etc. based on the common knowledge of a person skilled in the art. In addition, in the following examples etc., unless otherwise stated,% means mass%, and part means a mass part.

An additive for a hydraulic composition according to an embodiment of the present invention is an additive for a hydraulic composition containing the compound A and / or a salt thereof represented by the following formula (1). This implementation aspect The additive for hydraulic composition can increase the strength of the initial wood age of the hardened body obtained by curing the prepared hydraulic composition. Therefore, according to the additive for a hydraulic composition according to this aspect, the early strength can be improved, and the strength required for demolding can be obtained in a shorter time. For example, the mold release strength can be secured by hardening at 20 ° C. for about 24 hours.

In the above formula (1), X represents a hydrogen atom or a hydroxyl group.

The compound A represented by the above formula (1) supplied to the additive for a hydraulic composition of the present embodiment (hereinafter simply referred to as the additive of the present embodiment) includes hydroxymethylaminomethane and / or 2-amino-2-methyl-1,3-propanediol. Examples of the salt of the compound A include those in which an amine group in the formula (1) is a salt with an acid or the like.

There is no particular limitation on the amount added when the hydraulic composition is prepared using the additives of this embodiment. For example, the additive of this embodiment is added in the following manner: The ratio of the compound A in the additive is preferably 0.001 to 1.0 part by mass, more preferably 100 parts by mass of the hydraulic bonding material in the hydraulic composition. 0.005 to 0.8 parts by mass, and even more preferably 0.05 to 0.8 parts by mass. If it is too small, the expected effect will not be obtained, and if it is too large, the cost will be excessive.

The additive according to this embodiment preferably contains the following compound B. By containing the compound B, a desired effect can be achieved more highly.

Examples of the compound B include ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethanolamine, diethanolamine, triisopropanolamine, and diisopropanolamine. The compound B may be used alone or in combination of two or more.

In the case where the additive according to this embodiment further includes the compound B, the content of the compound B is not particularly limited. For example, when the hydraulic composition is prepared using the additive of the present embodiment, the compound B in the additive is preferably contained in the additive of the present embodiment in the following manner: with respect to 100 parts by mass of the hydraulic composition For a hydraulic bonding material, the compound B is preferably 0.001 to 1.0 parts by mass, more preferably 0.005 to 0.5 parts by mass, and even more preferably 0.005 to 0.2 parts by mass.

The additive according to this embodiment may further contain a dispersant for a hydraulic composition. Although it does not specifically limit as a dispersing agent for hydraulic compositions, For example, (1) The aromatic sulfonic acid type dispersion, such as a naphthalene type dispersing agent, a melamine type dispersing agent, a phenol type dispersing agent, a lignin type dispersing agent, etc. Dispersants such as (2) polycarboxylic acid-based dispersants, (3) phosphate-based dispersants. Among them, from the viewpoint of ensuring early strength, it is preferably selected from the group consisting of a naphthalene-based dispersant and a polycarboxylic acid-based dispersant.

Examples of the (a) naphthalene-based dispersant include naphthalenesulfonic acid formaldehyde condensate (MIGHTY 150 (trade name) manufactured by Kao Corporation, POLEFINE 510-AN (trade name) manufactured by Takemoto Oil Co., Ltd.) and the like. Examples of the (b) melamine-based dispersant include melamine sulfonic acid formaldehyde condensate (POLEFINE MF (trade name) manufactured by Takemoto Oil Co., Ltd., access Ried 100 (trade name) manufactured by Nissan Chemical Industry Co., Ltd.), etc. . Examples of the (c) phenol-based dispersant include phenolsulfonic acid formaldehyde condensates (compounds described in Japanese Patent Application Laid-Open No. 46-104919), and phenol phosphate formaldehyde condensates (compounds described in Japanese Patent Application Laid-Open No. 2012-504695). )Wait. Examples of the (d) lignin-based dispersant include lignin sulfonate (SAN X (trade name), VANILLEX (trade name), PEARLLEX (trade name), etc.) manufactured by Nippon Paper Chemicals Co., Ltd.).

As the polycarboxylic acid-based dispersant, a copolymer of a polyolefin diol and a monoester of (meth) acrylic acid and a carboxylic acid such as (meth) acrylic acid; an unsaturated alcohol having a polyolefin diol and (meth) Copolymers of carboxylic acids such as acrylic acid (for example, Japanese Patent Application Laid-Open No. 2007-119337); copolymers of unsaturated alcohols having a polyolefin diol and dicarboxylic acids such as maleic acid; and commercially available polycarboxylic acids Dispersants such as acidic dispersants. In addition, (meth) acrylic acid means acrylic acid or methacrylic acid.

A representative example of the polycarboxylic acid-based dispersant includes a copolymer obtained by polymerizing a monomer (M-1) represented by the following formula (2) and a monomer (M-2) having a carboxylic acid.

R ¹ -OXR ² (2)

In formula (2), R ¹ represents an alkenyl group having 2 to 5 carbon atoms, and an unsaturated fluorenyl group having 3 or 4 carbon atoms.

R ² represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, or an aliphatic fluorenyl group having 1 to 22 carbon atoms.

X represents a (poly) oxyalkylene group having an average addition mole number of 1 to 300 with one or two or more oxyalkylene groups having 2 to 4 carbon atoms.

Examples of the alkenyl group having 2 to 5 carbon atoms of R ¹ in formula (2) include vinyl, allyl, methallyl, 3-butenyl, and 2-methyl-1-butenyl. , 3-methyl-1-butenyl, 2-methyl-3-butenyl, 3-methyl-3-butenyl, and the like. Examples of the unsaturated fluorenyl group having 3 or 4 carbon atoms of R ¹ include acrylfluorenyl and methacrylfluorenyl. Among these, allyl, methallyl, 3-methyl-1-butenyl, acrylfluorenyl, and methacrylfluorenyl are preferred. One or two or more of these constituent units represented by the formula (2) may be used.

Examples of R ² in formula (2) include 1) a hydrogen atom, 2) an alkyl group having 1 to 22 carbon atoms, and 3) an aliphatic fluorenyl group having 1 to 22 carbon atoms.

Examples of X in formula (2) include polyoxyalkylene groups composed of 1 to 300 (poly) oxyalkylene units. Among them, a (poly) oxyalkylene group composed of 1 to 160 ethylene oxide units and / or propylene oxide units is preferred.

The carboxylic acid-containing monomer (M-2) as the above-mentioned (co) polymer (hereinafter simply referred to as Is "monomer (M-2)"), and has (meth) acrylic acid, crotonic acid, dicarboxylic acid, maleic acid, itaconic acid, fumaric acid, succinic acid mono (2- (meth) acrylic acid) Oxyethyl) esters and the like. Among them, the monomer (M-2) is preferably (meth) acrylic acid, maleic acid, (meth) acrylate, or maleate.

The salt of the monomer (M-2) having a carboxylic acid is not particularly limited, and examples thereof include alkali metal salts such as sodium salts and potassium salts, alkaline earth metal salts such as calcium salts and magnesium salts, ammonium salts, and diamines. Amine salts such as ethanolamine salts and triethanolamine salts.

The dispersant for hydraulic composition used for the additive of this aspect is not limited to the (co) polymer etc. demonstrated so far. For example, when producing a (co) polymer used as a dispersant for a hydraulic composition, any other suitable monomer may be used. Examples thereof include styrene, acrylamide, (meth) allylsulfonic acid, and salts thereof.

The additive of this aspect is used when preparing a hydraulic composition. For example, it can be used when preparing a concrete composition with cement, water, fine aggregate, coarse aggregate, AE agent, or the like.

The additive of this embodiment is added as a part of the mixed water when preparing the hydraulic composition. The addition ratio is preferably 0.001 to 1.0% by mass, and more preferably 0.01 to 0.5% by mass relative to the hydraulic bonding material.

Examples of the hydraulic bonding material include cement, blast furnace fine powder, fly ash, gypsum, hemihydrate gypsum, and anhydrous gypsum. Among them, cement is preferred. As the cement, in addition to various Portland cements such as ordinary Portland cement, early-strength Portland cement, and Moderate heat Portland cement, blast furnace cement, fly ash cement, and silica fume can be used. Various mixed cements such as cement.

As the fine aggregate, any conventional river sand, mountain sand, sea sand, crushed sand, slag sand, or the like can be used. In addition, as the coarse aggregate, any conventional river gravel, crushed stone, lightweight aggregate, or the like can be used.

It is also possible to use other water used in the preparation of the concrete composition at the same time. Mud dispersant. Examples of the air amount modifier include rosin soap, alkyl aromatic sulfonate, aliphatic alkyl (ether) sulfate, and alkyl phosphate. Depending on the situation, various conventional defoamers can be used.

When the additive according to this embodiment is used, other agents may be used in combination as long as the present invention is not impaired. Examples of the other agents used in combination with the additives according to this embodiment include other coagulant accelerators, retarders, rust inhibitors, and water repellents. In addition, the method of using the additive according to this aspect may be any method such as a method of adding together with mixed water when preparing a concrete composition, a method of immediately adding to the kneaded concrete composition, and the like.

Among the additives according to this embodiment, Compound A and other components may be mixed in advance as an additive for a single-liquid hydraulic composition.

Next, an embodiment of the method for preparing a hydraulic composition of the present invention will be described. The method for preparing a hydraulic composition according to this embodiment is a method for preparing a hydraulic composition using the additives for hydraulic compositions (additives for hydraulic compositions of the present invention) described so far. The method for preparing a hydraulic composition according to this embodiment is to add the additive for a hydraulic composition of the present invention by the following method: the hydraulic composition is added to the hydraulic bonding material in 100 parts by mass of the hydraulic composition to make the hydraulic composition The ratio of the compound A in the physical additive is 0.001 to 1.0 parts by mass.

According to the method for preparing a hydraulic composition according to this aspect, the early strength can be improved, and the strength required for demolding can be obtained in a shorter time. For example, the demolding strength can be secured by curing at 20 ° C for about 24 hours.

In the method for preparing a hydraulic composition according to this aspect, the ratio of the compound A in the additive for the hydraulic composition is preferably 0.05 to 0.8 parts by mass relative to 100 parts by mass of the hydraulic bonding material.

Examples

In the following, examples and the like are provided to make the structure and effects of the present invention more specific. However, the present invention is not limited to this embodiment. In addition, in the following examples etc., unless otherwise stated,% means mass%, and part means a mass part.

Preparation of additives for hydraulic composition (Examples 1 to 7): Preparation of ginsenomethylaminomethane (manufactured by ANGUS) and 2-amino-2-methyl-1,3-propanediol (Tokyo Chemical Reagent) As the compound A, AD-1 to AD-5 compounds B shown below were prepared. Compound A and Compound B were mixed in advance at the ratios shown in Table 1, and were appropriately diluted with ion-exchanged water. In this way, additives for hydraulic compositions of Examples 1 to 7 were prepared. In Table 1, the additives for hydraulic compositions of Examples 1 to 7 are referred to as EX-1 to EX-7.

In Table 1, the following terms have the following meanings.

a-1: Phenylmethylaminomethane (manufactured by ANGUS).

a-2: 2-amino-2-methyl-1,3-propanediol (Tokyo Chemical Reagent).

AD-1: Diethylene glycol (KISHIDA chemical reagent).

AD-2: ethylene glycol (KISHIDA chemical reagent).

AD-3: Triisopropanolamine (Wako Pure Chemical Industries, Ltd.).

AD-4: triethanolamine (KISHIDA chemical reagent).

AD-5: Glycerin (Wako Pure Chemical Industries, Ltd.).

Additives for the preparation of hydraulic compositions (Comparative Examples 1 and 2)

The compound B shown in Table 1 was appropriately diluted with ion-exchanged water to prepare additives for hydraulic compositions of Comparative Examples 1 and 2. In Table 1, the additives for hydraulic compositions of Comparative Examples 1 and 2 are R-1 and R-2.

The mass average molecular weights of the copolymers (PC-1) to (PC-3) shown below were measured by gel permeation chromatography. In addition, the following copolymers (PC-1) to (PC-3) are dispersants for hydraulic compositions that are used as additives for hydraulic compositions in each example.

Measurement conditions

Device: Shodex GPC-101 (manufactured by Showa Denko).

Column: OHpak SB-G + SB-806M HQ + SB-806M HQ (manufactured by Showa Denko).

Detector: Differential refractometer (RI).

Eluent: 50 mM sodium nitrate aqueous solution.

Flow: 0.7 mL / min.

Column temperature: 40 ° C.

Sample concentration: An eluate solution having a sample concentration of 0.5% by weight.

Standard materials: polyethylene oxide, polyethylene glycol.

Copolymer (PC-1) manufacturing:

First, as a raw material for manufacturing the copolymer (PC-1), 165.5 g of ion-exchanged water, 133.4 g of α-methacrylfluorenyl-ω-methoxy-poly (n = 45) ethylene oxide, and 22.2 g were prepared. Methacrylic acid, 1.6 g of 3-mercaptopropionic acid. The prepared raw materials were put into a reaction vessel (hereinafter, the same device was used) equipped with a thermometer, a stirrer, a dropping funnel, and a nitrogen introduction tube, and they were uniformly dissolved while stirring. After that will make The environment of the reaction system in which the components were dissolved was replaced with nitrogen, and the temperature of the reaction system was set to 65 ° C. with a water bath. Next, 27.3 g of 1.0% hydrogen peroxide water was added, and after maintaining at 65 ° C. for 6 hours, the polymerization reaction was completed. Thereafter, a 30% sodium hydroxide aqueous solution was added to adjust the pH to 6, and the concentration was adjusted to 40% with ion-exchanged water to obtain a reaction mixture. When the mass average molecular weight of the obtained reaction mixture was measured, it was 35,000. This reaction mixture was used as a copolymer (PC-1).

Copolymer (PC-2) manufacturing:

41.4 g of ion-exchanged water was placed in a reaction container equipped with a thermometer, a stirrer, a dropping funnel, and a nitrogen introduction tube, and the environment was replaced with nitrogen while stirring, and the temperature of the reaction system was set to 70 ° C. in a warm water bath. It took 3 hours to dissolve 188.0 g of α-methacrylfluorenyl-ω-methoxy-poly (n = 130) ethylene oxide in 188.0 g of ion-exchanged water, 12.0 g of methacrylic acid, and 2.0 g of formic acid. Sodium allyl sulfonate, 4.0 g of 3-mercaptopropionic acid in water. At the same time, it took 4 hours to drop an aqueous solution of 3.0 g of ammonium persulfate dissolved in 26.0 g of ion-exchanged water, and then maintained at 70 ° C. for 1 hour to terminate the polymerization reaction. Thereafter, a 30% sodium hydroxide aqueous solution was added to adjust the pH to 6, and the concentration was adjusted to 40% with ion-exchanged water to obtain a reaction mixture. When the mass average molecular weight of the obtained reaction mixture was measured, it was 45,000. This reaction mixture was used as a copolymer (PC-2).

Copolymer (PC-3) manufacturing:

117.0 g of ion-exchanged water and 98.2 g of α- (3-methyl-3-butenyl) -ω-hydroxy-poly (n = 53) ethylene oxide were placed in a thermometer, stirrer, dropping funnel, and nitrogen The reaction vessel introduced into the tube was uniformly dissolved while stirring. Thereafter, the dissolved reaction system environment was replaced with nitrogen, and the temperature of the reaction system was adjusted to 70 ° C. with a warm water bath. Then, 7.9 g of 3.5% hydrogen peroxide water was dripped over 3 hours. At the same time, an aqueous solution in which 9.5 g of acrylic acid was dissolved in 47.2 g of ion-exchanged water was dropped over 3 hours. At the same time, an aqueous solution of 0.6 g of L-ascorbic acid and 0.6 g of 3-mercaptopropionic acid dissolved in 5.0 g of ion-exchanged water was dropped over 4 hours. Thereafter, the temperature was maintained at 70 ° C for 2 hours, and the polymerization reaction was completed. After that, a 30% aqueous sodium oxide solution was added to adjust the pH to 6, and the concentration was adjusted with ion-exchanged water. It was adjusted to 40% to obtain a reaction mixture. When the mass average molecular weight of the obtained reaction mixture was measured, it was 46,000. This reaction mixture was used as a copolymer (PC-3).

Preparation of hydraulic composition (Examples 8 to 17 and Comparative Examples 3 to 5):

The hydraulic composition was prepared by the following method. In a 55L forced double-shaft mixer, according to the ratio shown in Table 2, the ordinary Portland cement (Pacific Cement Company, Ube Mitsubishi Cement Company, Sumitomo Osaka Cement Company, etc.) was sequentially introduced, and the three items were mixed in equal amounts. Specific gravity = 3.16), fine aggregate (Oigawa water system sand, specific gravity = 2.57) and coarse aggregate (crushed stone from Okazaki, specific gravity = 2.66), dry-mixed for 10 seconds. After that, the additive for the hydraulic composition and the defoamer (AFK-2 (trade name) manufactured by Takemoto Oil Co., Ltd.) were put into the mixed water so that the target slump became 18 ± 2.5 cm and the air volume was 2.0% or less. , Mix for 90 seconds to prepare the hydraulic composition. The addition amount (addition rate) of the additive for hydraulic compositions is as shown in Table 3. The ratio of the defoamer to the cement was 0.002%.

Slump: The hydraulic composition after mixing was measured immediately in accordance with JIS-A1150.

Air volume: The mixed concrete composition was measured immediately in accordance with JIS-A1128.

Compressive strength: According to JIS-A1132, concrete is filled with two layers in three cylindrical steel mold frames (bottom diameter: 100 mm, height 200 mm). After that, it was cured in air (20 ° C) in a 20 ° C room to harden the concrete. 24 hours after the concrete is prepared, the hardened test specimen is demoulded from the mold frame to obtain the test specimen. 24 of test specimens measured according to JIS-A1108 Hourly intensity, the average of 3 test subjects was calculated. Furthermore, three other test specimens were produced by the same method as above, and after being demolded from the test specimens in the same manner, they were cured in water at 20 ° C for 14 days, and the 14-day strength of the test specimens was measured according to JIS-A1108. , To find the average of 3 test subjects. Each result is shown in Table 3.

In Table 3, the following terms have the following meanings. It should be noted that descriptions of those overlapping the terms shown in Table 1 will be omitted.

Addition rate: The dispersant for hydraulic composition ("dispersant" in Table 3) is a mass ratio (mass%) relative to cement in the current state. The additive refers to the mass ratio (mass%) relative to the cement in the solid content.

Dispersant: Dispersant for hydraulic composition shown in the "Type" column of Table 3.

Additives: These are additives for hydraulic compositions shown in the "Type" column of Table 3.

NFS: Sodium Naphthalene Sulfonate Formaldehyde Condensate (POLEFINE 510AN (Takemoto Oil Company) Product name)).

result

In Examples 8 to 17, it was confirmed that both the 24-hour strength and the 14-day strength showed values higher than those of Comparative Examples 3 to 5 because the additive containing Compound A was used.

[Industrial availability]

The additive for a hydraulic composition of the present invention can be used as an additive when preparing a hydraulic composition.

Claims (14)

An additive for a hydraulic composition, which contains the compound A and / or a salt thereof represented by the following formula (1): In the above formula (1), X represents a hydrogen atom or a hydroxyl group. The additive for a hydraulic composition according to claim 1, further comprising the following compound B: Compound B: selected from ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethanolamine, diethanolamine, and triisopropanolamine And diisopropanolamine in one or two or more groups. The additive for a hydraulic composition according to claim 1, further comprising a dispersant for a hydraulic composition. The additive for a hydraulic composition according to claim 2, further comprising a dispersant for a hydraulic composition. The additive for a hydraulic composition according to claim 3, wherein the dispersant for the hydraulic composition is a polycarboxylic acid-based dispersant or an aromatic sulfonic acid-based compound. The additive for a hydraulic composition according to claim 4, wherein the dispersant for the hydraulic composition is a polycarboxylic acid-based dispersant or an aromatic sulfonic acid-based compound. A method for preparing a hydraulic composition, comprising adding the additive for a hydraulic composition according to claim 1, so that the compound A in the additive for the hydraulic composition is 100% by mass with respect to hydraulic properties in the hydraulic composition. The ratio of the bonding material is 0.001 to 1.0 parts by mass. A method for preparing a hydraulic composition, comprising adding the additive for a hydraulic composition as claimed in claim 2, so that the compound A in the additive for the hydraulic composition is 100 parts by mass of hydraulic The proportion of the hydraulic bonding material in the composition is 0.001 to 1.0 parts by mass. A method for preparing a hydraulic composition, comprising adding the additive for a hydraulic composition according to claim 3, so that the compound A in the additive for the hydraulic composition is 100% by mass with respect to hydraulic properties in the hydraulic composition. The ratio of the bonding material is 0.001 to 1.0 parts by mass. A method for preparing a hydraulic composition, comprising adding the additive for a hydraulic composition according to claim 4, so that the compound A in the additive for the hydraulic composition is 100% by mass of the hydraulic composition in the hydraulic composition. The ratio of the bonding material is 0.001 to 1.0 parts by mass. For example, the method for preparing a hydraulic composition according to claim 7, wherein the ratio of the compound A is 0.05 to 0.8 parts by mass relative to 100 parts by mass of the hydraulic bonding material. For example, the method for preparing a hydraulic composition according to claim 8, wherein the ratio of the compound A is 0.05 to 0.8 parts by mass relative to 100 parts by mass of the hydraulic bonding material. For example, the method for preparing a hydraulic composition according to claim 9, wherein the ratio of the compound A is 0.05 to 0.8 parts by mass relative to 100 parts by mass of the hydraulic bonding material. For example, the method for preparing a hydraulic composition according to claim 10, wherein the ratio of the compound A is from 0.05 to 0.8 parts by mass relative to 100 parts by mass of the hydraulic bonding material.