WO2012111683A1 - Modificateur pour matériau durcissable par l'eau - Google Patents

Modificateur pour matériau durcissable par l'eau Download PDF

Info

Publication number
WO2012111683A1
WO2012111683A1 PCT/JP2012/053458 JP2012053458W WO2012111683A1 WO 2012111683 A1 WO2012111683 A1 WO 2012111683A1 JP 2012053458 W JP2012053458 W JP 2012053458W WO 2012111683 A1 WO2012111683 A1 WO 2012111683A1
Authority
WO
WIPO (PCT)
Prior art keywords
compound
carbon atoms
general formula
group
cement
Prior art date
Application number
PCT/JP2012/053458
Other languages
English (en)
Japanese (ja)
Inventor
正長　眞理
福原　広二
Original Assignee
株式会社日本触媒
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011190282A external-priority patent/JP5777452B2/ja
Priority claimed from JP2011190284A external-priority patent/JP5777453B2/ja
Priority claimed from JP2011190281A external-priority patent/JP5777451B2/ja
Priority claimed from JP2011270504A external-priority patent/JP5798469B2/ja
Application filed by 株式会社日本触媒 filed Critical 株式会社日本触媒
Publication of WO2012111683A1 publication Critical patent/WO2012111683A1/fr

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/29—Frost-thaw resistance

Definitions

  • the present invention relates to an improver for hydraulic materials. More particularly, the present invention relates to a hydraulic material improving agent having an excellent crack suppressing function against dry shrinkage cracking of a hydraulic material.
  • Hydraulic materials give a cured product with excellent strength and durability. For this reason, hydraulic materials are widely used as cement compositions such as cement paste, mortar, and concrete. Hydraulic materials are indispensable for constructing civil engineering and building structures.
  • the hydraulic material causes the unreacted water remaining inside to dissipate due to the outside air temperature and humidity conditions after curing. For this reason, there is a problem that drying shrinkage proceeds, cracks occur in the cured product, and strength, durability, and the like are lowered. When the strength and durability of civil engineering and building structures are reduced, serious problems such as reduced safety and increased repair costs arise.
  • shrinkage reducing agents are regarded as important as a method for reducing drying shrinkage in order to suppress cracking of concrete.
  • the Architectural Institute standards for shrinkage reducing agents were established.
  • an alkylene oxide adduct of an alcohol having 1 to 4 carbon atoms see Patent Document 1
  • a co-adduct of an ethylene oxide and propylene oxide of a 2 to 8 polyhydric alcohol see Patent Document 2
  • Alkylene oxide adduct of lower alkylamine see Patent Document 3
  • polypropylene glycol in the oligomer region see Patent Document 4
  • low molecular alcohols see Patent Document 5
  • alkylene oxide adduct of 2-ethylhexanol see Patent Document 5) Patent Document 6) has been reported.
  • shrinkage reducing agents have a problem that the strength decreases when used in concrete. For this reason, in order to maintain intensity
  • the problem of the present invention is that it does not require a combination with other admixtures, is excellent in freeze-thaw resistance, and exhibits excellent crack suppression function without causing a decrease in the strength of the cured product.
  • the object is to provide a material improver.
  • Another object of the present invention is to provide a cement composition containing such a hydraulic material improver.
  • the improver for hydraulic material of the present invention is: General formula (1): [R 1 —O— (X 1 O) m —] p Y [—O— (X 2 O) n —R 2 ] q (1)
  • R 1 and R 2 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms
  • X 1 O and X 2 O each independently represents a carbon atom.
  • Represents an oxyalkylene group having a number of 2 to 4, m and n represent the average number of added moles of X 1 O and X 2 O, m and n are each independently 0 to 500, and m + n Y represents a residue of a compound containing a hydroxyl group, and p and q are each independently 0 to 6.
  • a hydraulic material improver comprising a compound (A) represented by formula (B) and a compound (B),
  • the compound (B) is selected from an amide compound represented by the general formula (2), a ketone compound represented by the general formula (3), a polyoxyalkyl ether compound, a polyalkylene polyamine compound, and an amino acid.
  • R 3 and R 4 each independently represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a hydroxyalkyl group having 1 to 6 carbon atoms
  • R 5 represents hydrogen.
  • R 4 and R 5 may have a cyclic amide structure bonded with an alkylene group.
  • R 7 and R 8 each independently represents an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group having 1 to 6 carbon atoms.
  • the polyoxyalkyl ether compound is represented by the general formula (4): R 9 —O— (X 3 O) s —R 10 (4)
  • R 9 and R 10 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms, provided that R 9 and R 10 do not simultaneously become hydrogen atoms.
  • X 3 O represents an oxyalkylene group having 2 to 4 carbon atoms, s represents the average number of added moles of X 3 O, and s is 1 to 4) It is represented by
  • the polyalkylene polyamine compound has the general formula (5): H 2 N— (X 4 —NH) t —H (5)
  • X 4 represents an alkylene group having 1 to 4 carbon atoms, and t represents an integer of 1 or more.
  • t represents an integer of 1 or more.
  • a polyethyleneimine Or a polyethyleneimine.
  • X 1 O and X 2 O in the general formula (1) are both oxyethylene groups.
  • the compound (B) is an amino acid.
  • the amino acid is an amino acid having a solubility in 100 g of water at 20 ° C. of 2 g or more.
  • the improver for hydraulic material of the present invention is: It is an amide compound represented by the general formula (2).
  • R 3 and R 4 each independently represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a hydroxyalkyl group having 1 to 6 carbon atoms
  • R 5 represents hydrogen.
  • k is an integer of 1 to 4
  • R 6 represents an alkyl group having 1 to 6 carbon atoms.
  • R 4 and R 5 may have a cyclic amide structure bonded with an alkylene group.
  • the improver for hydraulic material of the present invention is: It is a ketone compound represented by the general formula (3).
  • R 7 and R 8 each independently represents an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group having 1 to 6 carbon atoms.
  • the cement composition of the present invention includes the hydraulic material improving agent of the present invention and cement.
  • the present invention does not require a combination with other admixtures, is excellent in freeze-thaw resistance, and exhibits excellent crack suppression function without causing a decrease in the strength of the cured product.
  • Material improvers can be provided.
  • the cement composition containing such a modifier for hydraulic materials can be provided.
  • One embodiment of the hydraulic material improving agent of the present invention comprises the compound (A) and the compound (B).
  • Compound (A) may be only one kind or two or more kinds. Only one type of compound (B) may be used, or two or more types may be used.
  • the amount of the hydraulic material improving agent of the present invention added in this embodiment is preferably 0.5 to 20% by weight, more preferably 0, in terms of solid content with respect to the hydraulic material (cement or the like). 0.5 to 15% by weight, more preferably 1 to 10% by weight.
  • the hydraulic material improver of the present invention has a crack suppressing function and Freezing and thawing resistance can be expressed more effectively.
  • the hydraulic material improver of the present invention has a crack-inhibiting function and resistance to resistance due to the combined use of compound (A) and compound (B). The effect of synergistically improving the freezing and thawing properties is obtained, and the fresh physical properties of the concrete can be maintained well.
  • the ratio of (A) / (B) is preferably 70/30 to 98/2, and more preferably 90/10 to 95/5.
  • Compound (A) is represented by general formula (1). [R 1 —O— (X 1 O) m —] p Y [—O— (X 2 O) n —R 2 ] q (1)
  • R 1 and R 2 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms.
  • R 1 and R 2 are preferably a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms, more preferably a hydrogen atom or a hydrocarbon group having 1 to 2 carbon atoms, still more preferably, It is a hydrogen atom.
  • X 1 O and X 2 O each independently represents an oxyalkylene group having 2 to 4 carbon atoms.
  • X 1 O and X 2 O may each be one kind of oxyalkylene group or two or more kinds of oxyalkylene groups.
  • (X 1 O) m may be a random array or a block array.
  • (X 2 O) n may be a random array or a block array.
  • X 1 O and X 2 O are preferably an oxypropylene group or an oxyethylene group, and more preferably an oxyethylene group.
  • n are preferably 1 to 20, more preferably 1 to 10.
  • m and n are preferably 5 to 200, more preferably 10 to 150, and still more preferably 20 to 100.
  • the compound (A) represented by the general formula (1) is used in combination with the compound (B) to synergistically improve the hydraulic material improving agent of the present invention.
  • the crack suppressing function and freeze-thaw resistance can be improved.
  • Y represents a residue of a compound containing a hydroxyl group.
  • the compound containing a hydroxyl group include compounds in which at least one hydrogen atom bonded to a hydrocarbon having 1 to 8 carbon atoms is replaced with a hydroxyl group.
  • Specific examples of the compound containing a hydroxyl group include monohydric alcohols such as methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol, octanol and 2-ethylhexanol; ethylene glycol, propylene glycol and the like.
  • Glycols polymethyl alcohols such as trimethylolpropane, ditrimethylolpropane, pentaerythritol, dipentaerythritol, sorbitol, glycerin, polyglycerin; and the like.
  • the compound containing a hydroxyl group is preferably a glycol such as ethylene glycol or propylene glycol, and more preferably ethylene glycol.
  • P and q are each independently 0 to 6. However, p and q are not 0 at the same time.
  • the sum of p and q is preferably 2 to 12, and more preferably 2 to 6.
  • the compound (A) include a polyethylene glycol monoalkyl ether obtained by adding ethylene oxide to an alcohol having 1 to 4 carbon atoms; trimethylolpropane, ditrimethylolpropane, pentaerythritol, dipentaerythritol, sorbitol, glycerin. And a compound obtained by adding ethylene oxide to a polyhydric alcohol such as polyglycerin; polyethylene glycol; Of these, the compound (A) is preferably polyethylene glycol.
  • the weight average molecular weight of such polyethylene glycol is preferably 2000 to 20000, more preferably 3000 to 15000, and still more preferably 4000 to 10,000.
  • the compound (A) represented by the general formula (1) is preferably 0.01 to 10% by weight in terms of solid content with respect to the hydraulic material. Used for. More preferably, it is 0.03 to 5% by weight, still more preferably 0.05 to 3% by weight, and particularly preferably 0.1 to 2% by weight.
  • the amount of the compound (A) represented by the general formula (1) is less than 0.01% by weight in terms of solid content with respect to the hydraulic material, there is a possibility that the crack suppressing function cannot be sufficiently exhibited. If it exceeds 10% by weight, the crack suppressing function corresponding to the amount used may not be exhibited, which is uneconomical in terms of cost.
  • the compound (B) is selected from an amide compound represented by the general formula (2), a ketone compound represented by the general formula (3), a polyoxyalkyl ether compound, a polyalkylene polyamine compound, and an amino acid. At least one.
  • R 3 and R 4 each independently represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a hydroxyalkyl group having 1 to 6 carbon atoms, and R 5 represents hydrogen.
  • R 4 and R 5 may have a cyclic amide structure bonded with an alkylene group.
  • R 7 and R 8 each independently represents an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group having 1 to 6 carbon atoms.
  • the hydraulic material improving agent of the present invention is used so that the compound (B) is preferably 0.01 to 10% by weight in terms of solid content with respect to the hydraulic material. More preferably, it is 0.03 to 5% by weight, still more preferably 0.05 to 3% by weight, and particularly preferably 0.1 to 2% by weight. If the amount of the compound (B) used is less than 0.01% by weight in terms of solid content relative to the hydraulic material, there is a risk that the crack suppressing function may not be sufficiently exerted. The appropriate crack suppression function may not be exhibited, which is uneconomical in terms of cost.
  • R 3 and R 4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a hydroxyalkyl group having 1 to 6 carbon atoms.
  • Specific examples of the alkyl group having 1 to 6 carbon atoms include methyl, ethyl, propyl, butyl, pentyl, (cyclo) hexyl, and phenyl groups. A methyl group is preferred.
  • hydroxyalkyl group having 1 to 6 carbon atoms include a hydroxymethyl group, a hydroxyethyl group, a hydroxypropyl group, a hydroxybutyl group, a hydroxypentyl group, a hydroxy (cyclo) hexyl group, and a hydroxyphenyl group.
  • a hydroxyethyl group is preferred.
  • R 5 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or — (CH 2 ) k —O—R 6 , k is an integer of 1 to 4, and R 6 Represents an alkyl group having 1 to 6 carbon atoms.
  • R 4 and R 5 may have a cyclic amide structure bonded by an alkylene group. In this case, the alkylene group preferably has 3 to 6 carbon atoms.
  • Examples of the amide compound represented by the general formula (2) include alkylamides, cyclic amides, and ⁇ -alkoxyalkylamides. Specifically, N, N-dimethylformamide, N, N -Diethylformamide, N, N-dipropylformamide, N, N-dimethylacetamide, N, N-diethylacetamide, N, N-dipropylacetamide, N-methylpyrrolidone, N-ethylpyrrolidone, 2-hydroxymethyl-2 -Pyrrolidone, 2-hydroxyethyl-2-pyrrolidone, 2-hydroxypropyl-2-pyrrolidone, ⁇ -methyloxy-N- (iso) propylpropionamide, ⁇ -butyloxy-N- (iso) propylpropionamide, N, N-dimethyl ⁇ -methyloxypropionamide, N, N-dimethyl ⁇ -ester Tyloxypropionamide, N, N-dimethyl
  • N, N-dimethylformamide, N, N-dimethylacetamide, N-methylpyrrolidone, 2-hydroxyethyl-2-pyrrolidone, N, N-dimethyl ⁇ -methyloxypropion from the viewpoint of cost and versatility
  • Amide, N, N-dimethyl ⁇ -ethyloxypropionamide, N, N-dimethyl ⁇ -propyloxypropionamide, and N, N-dimethyl ⁇ -butyloxypropionamide are preferred.
  • R 7 and R 8 each independently represents an alkyl group having 1 to 6 carbon atoms or a hydroxyalkyl group having 1 to 6 carbon atoms.
  • alkyl group having 1 to 6 carbon atoms include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, and structural isomers thereof.
  • they are a methyl group and an ethyl group.
  • Examples of the hydroxyalkyl group having 1 to 6 carbon atoms include, for example, R 7 and R 8 are substituents having a structure in which a hydrogen atom bonded to carbon of the alcohol in the alcohol having 1 to 6 carbon atoms is removed. Is mentioned.
  • Examples of the alcohol having 1 to 6 carbon atoms include monohydric alcohols such as methanol, ethanol, propanol, butanol, pentanol, hexanol, and structural isomers thereof (for example, isopropanol, tert-butyl alcohol, etc.); ethylene And dihydric alcohols such as glycol, propylene glycol and butylene glycol; trihydric alcohols such as trimethylolpropane and glycerin;
  • ethanol, propanol, isopropanol, 1-butanol, 2-butanol, and tert-butyl alcohol are preferable, and 1-butanol, 2-butanol, and tert-butyl alcohol are more preferable.
  • ketone compound represented by the general formula (3) examples include acetone, methyl ethyl ketone, diethyl ketone, methyl isobutyl ketone, diacetone alcohol, 2,6-dihydroxy-2,6-dimethylheptane-4- ON, and diacetone alcohol and 2,6-dihydroxy-2,6-dimethylheptan-4-one are preferable.
  • the polyoxyalkyl ether compound is preferably represented by the general formula (4).
  • R 9 and R 10 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms. However, R 9 and R 10 are not hydrogen atoms at the same time.
  • hydrocarbon group having 1 to 6 carbon atoms examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, and structural isomers thereof.
  • R 9 and R 10 are preferably a hydrogen atom, a methyl group, an ethyl group, or an (iso) butyl group.
  • X 3 O represents an oxyalkylene group having 2 to 4 carbon atoms.
  • X 3 O is preferably an oxyethylene group.
  • X 3 O may be only one kind, or two or more kinds of oxyalkylene groups may be contained. When two or more kinds of oxyalkylene groups are contained, (X 3 O) s may be a random array or a block array.
  • s represents the average added mole number of X 3 O.
  • s is 1 to 4, preferably 2 to 3.
  • s is in the range of 1 to 4, it can be used as a hydraulic material improver that can synergistically improve the crack-inhibiting function and freeze-thaw resistance when used in combination with compound (A). .
  • the polyalkylene polyamine compound is preferably a compound represented by the general formula (5) or polyethyleneimine. H 2 N— (X 4 —NH) t —H (5)
  • X 4 represents an alkylene group having 1 to 4 carbon atoms.
  • X 4 is preferably an ethylene group.
  • t represents an integer of 1 or more.
  • t is preferably an integer of 1 to 8.
  • polyalkylene polyamine compound examples include, for example, ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, hexaethyleneheptamine, heptaethyleneoctamine, octaethylenenonamine, and nonaethylenedecane.
  • polyethyleneimine examples include triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, and polyethyleneimine are preferable, and diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and polyethyleneimine are more preferable.
  • amino acid is an organic compound having both an amino group and a carboxyl group.
  • amino acids include ⁇ -amino acids, ⁇ -amino acids, ⁇ -amino acids and the like.
  • Amino acids can exist as optical isomers (D-type, L-type) or racemates depending on their structure.
  • the amino acid is preferably an amino acid having a solubility at 20 ° C. in 100 g of water of 2 g or more.
  • amino acids include glycine, alanine, valine, leucine, isoleucine, amino acids having a hydroxy group (eg, serine, threonine, etc.), amino acids containing sulfur atoms (eg, cysteine, methionine, etc.), amides, and the like.
  • Amino acids having a group for example, asparagine, glutamine, etc.
  • amino acids having an imino group for example, proline
  • amino acids having an aromatic group for example, phenylalanine, tyrosine, tryptophan, etc.
  • the amino acid (B) is preferably glycine, D, L- ⁇ -alanine, or ⁇ -alanine.
  • Embodiment 2 of the improver for hydraulic material is an amide compound represented by the general formula (2).
  • the addition amount of the hydraulic material improver of the present invention in this embodiment is preferably 0.01 to 10% by weight, more preferably 0, in terms of solid content with respect to the hydraulic material (cement or the like). 0.03 to 5% by weight, more preferably 0.05 to 3% by weight, and particularly preferably 0.1 to 2% by weight.
  • the hydraulic material improver of the present invention has a crack suppressing function and Freezing and thawing resistance can be expressed more effectively.
  • Embodiment 3 of the improver for hydraulic material is a ketone compound represented by the general formula (3).
  • the addition amount of the hydraulic material improver of the present invention in this embodiment is preferably 0.01 to 10% by weight, more preferably 0, in terms of solid content with respect to the hydraulic material (cement or the like). 0.03 to 5% by weight, more preferably 0.05 to 3% by weight, and particularly preferably 0.1 to 2% by weight.
  • the hydraulic material improver of the present invention has a crack suppressing function and Freezing and thawing resistance can be expressed more effectively.
  • the improvement agent for hydraulic materials of the present invention may contain any appropriate water reducing agent.
  • water reducing agents include aminosulfonic acid series such as lignin sulfonate, naphthalene sulfonic acid formalin condensate, melamine sulfonic acid formalin condensate, polystyrene sulfonate, aminoaryl sulfonic acid-phenol-formaldehyde condensate.
  • a sulfonic acid-based water reducing agent such as a polyol derivative; a polymer having a polyoxyalkylene group and an anionic group (preferably a polymer having a polyoxyalkylene group and a carboxyl group (polycarboxylic acid-based water reducing agent), poly A polymer having an oxyalkylene group and a phosphate group).
  • Examples of the polymer having a polyoxyalkylene group and a carboxyl group include alkylenes such as (meth) allyl alcohol and 3-methyl 3-buten-1-ol Copolymer obtained from a monomer composition containing an alkenyl ether monomer added with an oxide and an unsaturated carboxylic acid monomer such as (meth) acrylic acid or maleic acid, or a salt thereof 236858 and JP-A-2001-220417); obtained from a monomer composition containing (alkoxy) polyalkyleneglycol mono (meth) acrylate monomer and (meth) acrylic monomer And the like (see JP-B-59-18338 and JP-A-7-223852).
  • alkylenes such as (meth) allyl alcohol and 3-methyl 3-buten-1-ol Copolymer obtained from a monomer composition containing an alkenyl ether monomer added with an oxide and an unsaturated carboxylic acid monomer such as (meth) acrylic acid or maleic acid,
  • Examples of the polymer having a polyoxyalkylene group and a phosphate group include, for example, a single monomer containing a specific monomer having a polyoxyalkylene group, a phosphate monoester monomer, and a phosphate diester monomer. And a copolymer obtained from the monomer composition (see JP-A-2006-052381).
  • lignin sulfonate naphthalene sulfonic acid formalin condensate
  • polycarboxylic acid water reducing agent are preferable.
  • the hydraulic material improver of the present invention may contain other known hydraulic material improvers (materials) as exemplified in the following (1) to (20).
  • Water-soluble polymer material polyacrylic acid (sodium), polymethacrylic acid (sodium), polymaleic acid (sodium), unsaturated carboxylic acid polymer such as sodium salt of acrylic acid / maleic acid copolymer; methylcellulose Nonionic cellulose ethers such as ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, hydroxypropyl cellulose; alkylated or hydroxyalkylated derivatives of polysaccharides such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose Hydrophobic substituents in which some or all of the hydrogen atoms of the hydroxyl group have a hydrocarbon chain having 8 to 40 carbon atoms as a partial structure, a sulfonic acid group or Polysaccharide derivatives substituted with ionic hydrophilic substituents containing these salts as a partial structure;
  • Polymer emulsion Copolymers of various vinyl monomers such as alkyl (meth) acrylate.
  • retarder gluconic acid, glucoheptonic acid, arabonic acid, malic acid or citric acid, and oxycarboxylic acids such as sodium, potassium, calcium, magnesium, ammonium, triethanolamine and other inorganic or organic salts
  • Monosaccharides such as glucose, fructose, galactose, saccharose, xylose, apiose, ribose and isomerized sugar, oligosaccharides such as disaccharide and trisaccharide, oligosaccharides such as dextrin, polysaccharides such as dextran, and the like
  • Sugars such as molasses; sugar alcohols such as sorbitol; magnesium silicofluoride; phosphoric acid and its salts or borate esters; aminocarboxylic acids and salts thereof; alkali-soluble proteins; humic acid; tannic acid; Polyhydric alcohols such as glycerin; Tri (methylenephosphonic acid), 1-
  • soluble calcium salts such as calcium chloride, calcium nitrite, calcium nitrate, calcium bromide and calcium iodide
  • chlorides such as iron chloride and magnesium chloride
  • sulfates potassium hydroxide
  • Sodium hydroxide carbonate
  • thiosulfate formate such as formic acid and calcium formate
  • alkanolamine alumina cement
  • calcium aluminate silicate calcium aluminate silicate
  • Mineral oil-based antifoaming agent straw oil, liquid paraffin, etc.
  • Oil and fat-based antifoaming agents animal and vegetable oils, sesame oil, castor oil, these alkylene oxide adducts, etc.
  • Fatty acid-based antifoaming agent oleic acid, stearic acid, alkylene oxide adducts thereof and the like.
  • Fatty acid ester antifoaming agent glycerin monoricinoleate, alkenyl succinic acid derivative, sorbitol monolaurate, sorbitol trioleate, natural wax, etc.
  • Oxyalkylene antifoaming agents polyoxyalkylenes such as (poly) oxyethylene (poly) oxypropylene adducts; diethylene glycol heptyl ether, polyoxyethylene oleyl ether, polyoxypropylene butyl ether, polyoxyethylene polyoxypropylene -2-Ethylhexyl ether, (poly) oxyalkyl ethers such as oxyethyleneoxypropylene adducts to higher alcohols having 12 to 14 carbon atoms; (poly) oxypolypropylene phenyl ether, polyoxyethylene nonylphenyl ether, etc.
  • polyoxyalkylenes such as (poly) oxyethylene (poly) oxypropylene adducts; diethylene glycol heptyl ether, polyoxyethylene oleyl ether, polyoxypropylene butyl ether, polyoxyethylene polyoxypropylene -2-Ethylhexyl ether,
  • Oxyalkylene (alkyl) aryl ethers 2,4,7,9-tetramethyl-5-decyne-4,7-diol, 2,5-dimethyl-3-hexyne-2,5-diol, 3-methyl- Acetylene ethers obtained by addition polymerization of alkylene oxide to acetylene alcohol such as butyn-3-ol;
  • (poly) oxyalkylene fatty acid esters such as diethylene glycol oleate, diethylene glycol laurate, ethylene glycol distearate; polyoxy (Poly) oxyalkylene sorbitan fatty acid esters such as ethylene sorbitan monolaurate and polyoxyethylene sorbitan trioleate;
  • (poly) oxyalkylene alkyl such as sodium polyoxypropylene methyl ether sulfate and sodium polyoxyethylene dodecylphenol ether sulfate (Aryl) ether sulfate esters;
  • Alcohol-based antifoaming agents octyl alcohol, hexadecyl alcohol, 2-ethylhexyl alcohol, acetylene alcohol, glycols and the like.
  • Amide-based antifoaming agent acrylate polyamine and the like.
  • Phosphate ester antifoaming agent tributyl phosphate, sodium octyl phosphate, etc.
  • Metal soap antifoaming agent aluminum stearate, calcium oleate, etc.
  • Silicone antifoaming agent dimethyl silicone oil, silicone paste, silicone emulsion, organically modified polysiloxane (polyorganosiloxane such as dimethylpolysiloxane), fluorosilicone oil and the like.
  • AE agent resin soap, saturated or unsaturated fatty acid, sodium hydroxystearate, lauryl sulfate, ABS (alkyl benzene sulfonic acid), LAS (linear alkyl benzene sulfonic acid), alkane sulfonate, polyoxyethylene alkyl (phenyl) ether Polyoxyethylene alkyl (phenyl) ether sulfate or a salt thereof, polyoxyethylene alkyl (phenyl) ether phosphate or a salt thereof, protein material, alkenyl sulfosuccinic acid, ⁇ -olefin sulfonate, and the like.
  • surfactants aliphatic monohydric alcohols having 6 to 30 carbon atoms in the molecule such as octadecyl alcohol and stearyl alcohol; 6 to 30 carbon atoms in the molecule such as abiethyl alcohol
  • a monocyclic mercaptan having 6 to 30 carbon atoms in the molecule such as dodecyl mercaptan
  • an alkylphenol having 6 to 30 carbon atoms in the molecule such as nonylphenol
  • a molecule such as dodecylamine Amines having 6 to 30 carbon atoms in them
  • polyalkylene oxide derivatives for example, carboxylic acids having 6 to 30 carbon atoms in the molecule such as lauric acid and stearic acid, ethylene oxide, propylene oxide, etc.
  • Waterproofing agent fatty acid (salt), fatty acid ester, fats and oils, silicone, paraffin, asphalt, wax and the like.
  • Rust inhibitor nitrite, phosphate, zinc oxide, etc.
  • hydraulic material improvers include concrete admixtures, cement wetting agents, thickeners, separation reducing agents, flocculants, strength enhancers, self-leveling agents, colorants, fungicides, etc. Can be mentioned.
  • the said well-known improvement agent (material) for hydraulic materials can also be used together.
  • the hydraulic material improver of the present invention may be used in combination with other admixtures as necessary within the scope of the effects of the present invention.
  • the hydraulic material improving agent of the present invention can suppress the strength reduction of the cured product, can exhibit an excellent crack suppression function, and can exhibit excellent freeze-thaw resistance without being combined with other admixtures. . Therefore, when considering providing the hydraulic material improver of the present invention at low cost, other admixtures do not necessarily need to be used in combination.
  • any appropriate method can be adopted as the method for producing the hydraulic material improving agent of the present invention.
  • the improving agent for hydraulic materials of the present invention contains the compound (A) and the compound (B)
  • mixing may be performed by any appropriate mixing method.
  • the improving agent for hydraulic material of the present invention As a usage form of the improving agent for hydraulic material of the present invention, a method of adding to the hydraulic material composition is generally used. However, the improvement for the hydraulic material of the present invention is applied to the surface of the hydraulic material composition after curing. An agent may be applied or dispersed.
  • the hydraulic material improving agent of the present invention has a wide range of application of the water / cement ratio, and can produce concrete with a water / cement ratio (weight ratio) of preferably 60% to 15%.
  • the cement composition of the present invention comprises the hydraulic material improver of the present invention and cement.
  • the cement composition of the present invention preferably contains fine aggregate and water in addition to the hydraulic material improving agent and cement of the present invention, and such a cement composition may be referred to as mortar.
  • the cement composition of the present invention preferably further contains fine aggregate, coarse aggregate and water in addition to the hydraulic material improver of the present invention and cement. May be called.
  • cement used in the production of the cement composition examples include normal, low heat, moderately hot, early strength, ultra-early strength, sulfate-resistant, portland cement such as low alkali type thereof, blast furnace cement, silica cement, fly ash cement, etc.
  • Eco-cement cement produced from one or more of municipal waste incineration ash and sewage sludge incineration ash); silica fume cement; white Portland cement; alumina cement; super fast cement (1 clinker fast cement, 2 clinker fast cure) Cement, magnesium phosphate cement); grout cement; oil well cement; low exothermic cement (low exothermic blast furnace cement, fly ash mixed low exothermic blast furnace cement, high belite-containing cement); ultra high strength cement; cement solidified material And so on.
  • Examples of the powder that can be contained in the cement composition include silica fume, fly ash, cinder ash, clinker ash, husk ash, silica powder, limestone fine powder, blast furnace slag fine powder, expansion material, and other minerals.
  • Examples include fine powder.
  • Examples of the fine aggregate include river sand, mountain sand, sea sand, crushed sand, heavy aggregate, lightweight aggregate, slag aggregate, recycled aggregate, and the like.
  • Examples of the coarse aggregate include river gravel, crushed stone, heavy aggregate, lightweight aggregate, slag aggregate, recycled aggregate, and the like.
  • Examples of water include tap water, water other than tap water (river water, lake water, well water, etc.) shown in Appendix 9 of JIS A 5308, recovered water, and the like.
  • the cement composition may contain any appropriate additive.
  • additives include curing accelerators, setting retarders, rust preventives, waterproofing agents, preservatives, and the like.
  • Any appropriate method can be adopted for the method of manufacturing, transporting, placing, curing, and managing the cement composition.
  • the cured paste was taken out of the ring restraint test mold and used as a ring restraint specimen.
  • the form of the ring restraint specimen is as shown in FIG. This specimen was stored in a constant temperature and humidity room at a room temperature of 20 ° C. and a humidity of 60%, and the crack resistance was evaluated. The time from the start of storage until the specimen was cracked was defined as the crack occurrence time. It shows that it is excellent in crack resistance, so that the crack generation time is long.
  • the inside of the reaction vessel was depressurized while flowing a small amount of nitrogen under heating and stirring, and dehydration was performed at an internal pressure of 50 mmHg for 1 hour. After dehydration for 1 hour, pressurize with nitrogen, raise the internal temperature to 150 ° C., and reduce the internal temperature to 150 ⁇ under safe pressure (conditions where the nitrogen partial pressure in the reaction vessel is always higher than the ethylene oxide partial pressure). While maintaining the temperature at 5 ° C., 225 g of ethylene oxide was added to obtain polyethylene glycol (PEG 2000) having a weight average molecular weight of 2000.
  • PEG 2000 polyethylene glycol having a weight average molecular weight of 2000.
  • the inside of the reaction vessel was depressurized while flowing a small amount of nitrogen under heating and stirring, and dehydration was performed at an internal pressure of 50 mmHg for 1 hour. After dehydration for 1 hour, pressurize with nitrogen, raise the internal temperature to 150 ° C., and reduce the internal temperature to 150 ⁇ under safe pressure (conditions where the nitrogen partial pressure in the reaction vessel is always higher than the ethylene oxide partial pressure). While maintaining at 5 ° C., 700 g of ethylene oxide was added to obtain polyethylene glycol (PEG 4500) having a weight average molecular weight of 4500.
  • PEG 4500 polyethylene glycol having a weight average molecular weight of 4500.
  • Example 1 Using 0.3% by weight of N, N-dimethylformamide as the compound (B) with respect to the cement, a cement paste was prepared according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. . Table 1 shows the results of the crack resistance evaluation.
  • Example 2 Cement paste was prepared according to the crack resistance evaluation method using 0.3% by weight of N, N-dimethylacetamide as the compound (B) with respect to the cement, and a ring restraint specimen was prepared from the cement paste. .
  • Table 1 shows the results of the crack resistance evaluation.
  • Example 3 Using 0.3% by weight of N-methylpyrrolidone as the compound (B) with respect to the cement, a cement paste was prepared according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 1 shows the results of the crack resistance evaluation.
  • Example 4 Using N, N-dimethyl- ⁇ -butyloxypropionamide as a compound (B) in an amount of 0.3% by weight based on the cement, a cement paste was prepared according to the crack resistance evaluation method, and a ring was prepared from the cement paste. A restraint specimen was created. Table 1 shows the results of the crack resistance evaluation.
  • Example 5 Using 0.3% by weight of 2-hydroxyethyl-2-pyrrolidone as the compound (B) based on the cement, a cement paste was prepared according to the crack resistance evaluation method, and a ring-constrained specimen was prepared from the cement paste. Created. Table 1 shows the results of the crack resistance evaluation.
  • Cement paste was prepared using polypropylene glycol (average degree of polymerization 7) 0.3% by weight with respect to the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 1 shows the results of the crack resistance evaluation.
  • Example 6 As shown in Table 2, PEG4500 obtained in Production Example 3 was used as the compound (A), N-methylpyrrolidone was used as the compound (B), and these were mixed as shown in Table 2 for use in hydraulic materials. An improver was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 2 shows the results of the crack resistance evaluation.
  • Example 7 As shown in Table 2, PEG4500 obtained in Production Example 3 was used as compound (A), and N, N-dimethyl- ⁇ -butyloxypropionamide was used as compound (B). Mixing was performed to prepare a hydraulic material improver. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 2 shows the results of the crack resistance evaluation.
  • Example 8 As shown in Table 2, PEG4500 obtained in Production Example 3 was used as compound (A), 2-hydroxyethyl 2-pyrrolidone was used as compound (B), and these were mixed as shown in Table 2 to obtain water. A hard material modifier was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 2 shows the results of the crack resistance evaluation.
  • Example 9 Cement paste was prepared using 0.3% by weight of acetone as the compound (B) with respect to the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 3 shows the results of the crack resistance evaluation.
  • Example 10 Using 0.3% by weight of methyl ethyl ketone as the compound (B) based on the cement, a cement paste was prepared according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 3 shows the results of the crack resistance evaluation.
  • Example 11 A cement paste was prepared using 0.3% by weight of diacetone alcohol as the compound (B) with respect to the cement according to the method for evaluating crack resistance, and a ring restraint specimen was prepared from the cement paste. Table 3 shows the results of the crack resistance evaluation.
  • Example 12 Using 2,6-dihydroxy-2,6-dimethylheptan-4-one as compound (B) in an amount of 0.3% by weight based on the cement, a cement paste was prepared according to the crack resistance evaluation method, A ring restraint specimen was prepared from cement paste. Table 3 shows the results of the crack resistance evaluation.
  • Cement paste was prepared using polypropylene glycol (average degree of polymerization 7) 0.3% by weight with respect to the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 3 shows the results of the crack resistance evaluation.
  • Example 13 As shown in Table 4, PEG4500 obtained in Production Example 3 was used as the compound (A), methyl ethyl ketone was used as the compound (B), and these were mixed as shown in Table 4 to obtain a hydraulic material improver.
  • a cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 4 shows the results of the crack resistance evaluation.
  • Example 14 As shown in Table 4, the PEG4500 obtained in Production Example 3 was used as the compound (A), diacetone alcohol was used as the compound (B), and these were mixed as shown in Table 4 to improve the hydraulic material. An agent was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 4 shows the results of the crack resistance evaluation.
  • Example 15 As shown in Table 5, PEG2000 obtained in Production Example 2 was used as compound (A), triethylene glycol dimethyl ether (TEDM: manufactured by Nippon Emulsifier) was used as compound (B), and these were mixed as shown in Table 5 Thus, an improving agent for hydraulic material was prepared.
  • a cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 6 shows the results of the crack resistance evaluation.
  • Example 16 As shown in Table 5, PEG4500 obtained in Production Example 3 was used as compound (A), triethylene glycol dimethyl ether (TEDM: manufactured by Nippon Emulsifier) was used as compound (B), and these were mixed as shown in Table 5 Thus, an improving agent for hydraulic material was prepared.
  • a cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 6 shows the results of the crack resistance evaluation.
  • Example 17 As shown in Table 5, PEG4500 obtained in Production Example 3 was used as compound (A), diethylene glycol dimethyl ether (DEDM: manufactured by Nippon Emulsifier) was used as compound (B), and these were mixed as shown in Table 5. A modifier for hydraulic materials was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 6 shows the results of the crack resistance evaluation.
  • DEDM diethylene glycol dimethyl ether
  • Example 18 As shown in Table 5, PEG4500 obtained in Production Example 3 was used as compound (A), diethylene glycol diethyl ether (DEDG: manufactured by Nippon Emulsifier) was used as compound (B), and these were mixed as shown in Table 5. Thus, a hydraulic material improver was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 6 shows the results of the crack resistance evaluation.
  • DEDG diethylene glycol diethyl ether
  • Example 19 As shown in Table 5, PEG4500 obtained in Production Example 3 was used as compound (A), dipropylene glycol dimethyl ether (DMFDG: manufactured by Nippon Emulsifier) was used as compound (B), and these were mixed as shown in Table 5 Thus, an improving agent for hydraulic material was prepared.
  • a cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 6 shows the results of the crack resistance evaluation.
  • Example 20 As shown in Table 5, PEG4500 obtained in Production Example 3 was used as compound (A), diethylene glycol monoisobutyl ether (BDG: manufactured by Nippon Emulsifier) was used as compound (B), and these were mixed as shown in Table 5 Thus, an improving agent for hydraulic material was prepared.
  • a cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 6 shows the results of the crack resistance evaluation.
  • Example 21 As shown in Table 7, PEG2000 obtained in Production Example 2 was used as the compound (A), and Epomin SP018 (SP018: manufactured by Nippon Shokubai) was used as the compound (B), and these were mixed as shown in Table 7. A modifier for hydraulic materials was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 8 shows the results of the crack resistance evaluation.
  • Example 22 As shown in Table 7, PEG4500 obtained in Production Example 3 was used as compound (A), Epomin SP018 (SP018: manufactured by Nippon Shokubai Co., Ltd.) was used as compound (B), and these were mixed as shown in Table 7. A modifier for hydraulic materials was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 8 shows the results of the crack resistance evaluation.
  • Example 23 As shown in Table 7, PEG4500 obtained in Production Example 3 was used as compound (A), Epomin SP012 (SP012: manufactured by Nippon Shokubai) was used as compound (B), and these were mixed as shown in Table 7. A modifier for hydraulic materials was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 8 shows the results of the crack resistance evaluation.
  • Example 24 As shown in Table 7, PEG4500 obtained in Production Example 3 was used as the compound (A), diethylenetriamine (DETA) was used as the compound (B), and these were mixed as shown in Table 7 for hydraulic materials. An improver was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 8 shows the results of the crack resistance evaluation.
  • Example 25 As shown in Table 7, PEG4500 obtained in Production Example 3 was used as the compound (A), triethylenetetramine (TETA) was used as the compound (B), and these were mixed as shown in Table 7 to obtain hydraulic properties. A material modifier was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 8 shows the results of the crack resistance evaluation.
  • TETA triethylenetetramine
  • Example 26 As shown in Table 9, PEG2000 obtained in Production Example 2 was used as the compound (A), glycine (Gly, Wako Pure Chemical Industries) was used as the compound (B), and these were mixed as shown in Table 9, A modifier for hydraulic material was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 10 shows the results of the crack resistance evaluation.
  • Example 27 As shown in Table 9, PEG4500 obtained in Production Example 3 was used as the compound (A), glycine (Gly, Wako Pure Chemical Industries) was used as the compound (B), and these were mixed as shown in Table 9, A modifier for hydraulic material was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 10 shows the results of the crack resistance evaluation.
  • Example 28 As shown in Table 9, PEG4500 obtained in Production Example 3 was used as the compound (A), glycine (Gly, Wako Pure Chemical Industries) was used as the compound (B), and these were mixed as shown in Table 9, A modifier for hydraulic material was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 10 shows the results of the crack resistance evaluation.
  • Example 29 As shown in Table 9, PEG4500 obtained in Production Example 3 was used as the compound (A), and D, L- ⁇ -alanine (Ala, Wako Pure Chemical Industries) was used as the compound (B). Thus, the improver for hydraulic material was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 10 shows the results of the crack resistance evaluation.
  • Example 30 As shown in Table 9, PEG4500 obtained in Production Example 3 was used as the compound (A), and D, L- ⁇ -alanine (Ala, Wako Pure Chemical Industries) was used as the compound (B). Thus, the improver for hydraulic material was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 10 shows the results of the crack resistance evaluation.
  • Example 31 As shown in Table 9, PEG4500 obtained in Production Example 3 was used as compound (A), ⁇ -alanine (Bala, Wako Pure Chemical Industries) was used as compound (B), and these were mixed as shown in Table 9. Thus, a hydraulic material improver was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 10 shows the results of the crack resistance evaluation.
  • Example 32 As shown in Table 9, PEG4500 obtained in Production Example 3 was used as compound (A), ⁇ -alanine (Bala, Wako Pure Chemical Industries) was used as compound (B), and these were mixed as shown in Table 9. Thus, a hydraulic material improver was prepared. A cement paste was prepared by using the obtained hydraulic material improving agent in an amount of 1.5% by weight based on the cement according to the crack resistance evaluation method, and a ring restraint specimen was prepared from the cement paste. Table 10 shows the results of the crack resistance evaluation.
  • the improver for hydraulic materials of the present invention can be suitably used for cement compositions such as mortar and concrete as a highly versatile improver for hydraulic materials.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

La présente invention concerne un modificateur hautement polyvalent pour un matériau durcissable par l'eau qui ne nécessite pas d'autres adjuvants, possède une excellente résistance à la congélation/décongélation et à la fissuration, et dont la résistance ne diminue pas une fois le produit durci. En outre, l'invention porte sur une composition de ciment comprenant un tel modificateur pour un matériau durcissable par l'eau. Ledit modificateur pour matériau durcissable par l'eau est un modificateur pour matériau durcissable par l'eau comprenant un composé (A), représenté par la formule générale (1) [R1-O-(X1O)m-]pY[-O-(X2O)n-R2]q, et un composé (B), ledit composé (B) étant au moins sélectionné dans le groupe constitué de composés amides, de composés cétones, de composés d'éther polyoxyalkyle, de composés de polyalkylène polyamine, et d'acides aminés, et le rapport pondéral (A)/(B) entre le composé (A) et le composé (B) étant compris entre 60/40 et 99/1.
PCT/JP2012/053458 2011-02-17 2012-02-15 Modificateur pour matériau durcissable par l'eau WO2012111683A1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2011-031976 2011-02-17
JP2011031976 2011-02-17
JP2011-190281 2011-09-01
JP2011-190284 2011-09-01
JP2011190282A JP5777452B2 (ja) 2011-09-01 2011-09-01 コンクリート改良剤
JP2011190284A JP5777453B2 (ja) 2011-09-01 2011-09-01 コンクリート改質剤
JP2011190281A JP5777451B2 (ja) 2011-09-01 2011-09-01 水硬性材料用改質剤
JP2011-190282 2011-09-01
JP2011270504A JP5798469B2 (ja) 2011-12-09 2011-12-09 水硬性材料用改良剤
JP2011-270504 2011-12-09

Publications (1)

Publication Number Publication Date
WO2012111683A1 true WO2012111683A1 (fr) 2012-08-23

Family

ID=46672599

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/053458 WO2012111683A1 (fr) 2011-02-17 2012-02-15 Modificateur pour matériau durcissable par l'eau

Country Status (1)

Country Link
WO (1) WO2012111683A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014159357A (ja) * 2013-02-21 2014-09-04 Nippon Shokubai Co Ltd 水硬性材料用改良剤組成物

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997562A (ja) * 1982-11-20 1984-06-05 三洋化成工業株式会社 セメント収縮低減剤
JPH0421552A (ja) * 1990-05-11 1992-01-24 Hisamitsu Tsuyuki セメント用中性化抑制剤
JP2000219557A (ja) * 1999-01-29 2000-08-08 Sika Ag 水硬性結合材の収縮を低減するための方法
JP2006206403A (ja) * 2005-01-31 2006-08-10 Denki Kagaku Kogyo Kk 吹付け材料及びそれを用いた吹付け工法
JP2006206404A (ja) * 2005-01-31 2006-08-10 Denki Kagaku Kogyo Kk 吹付け材料及びそれを用いた吹付け工法
WO2008117372A1 (fr) * 2007-03-23 2008-10-02 Sika Ltd. Mélange de ciment
WO2011083839A1 (fr) * 2010-01-08 2011-07-14 株式会社日本触媒 Agent de réduction du retrait pour matériau hydraulique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997562A (ja) * 1982-11-20 1984-06-05 三洋化成工業株式会社 セメント収縮低減剤
JPH0421552A (ja) * 1990-05-11 1992-01-24 Hisamitsu Tsuyuki セメント用中性化抑制剤
JP2000219557A (ja) * 1999-01-29 2000-08-08 Sika Ag 水硬性結合材の収縮を低減するための方法
JP2006206403A (ja) * 2005-01-31 2006-08-10 Denki Kagaku Kogyo Kk 吹付け材料及びそれを用いた吹付け工法
JP2006206404A (ja) * 2005-01-31 2006-08-10 Denki Kagaku Kogyo Kk 吹付け材料及びそれを用いた吹付け工法
WO2008117372A1 (fr) * 2007-03-23 2008-10-02 Sika Ltd. Mélange de ciment
WO2011083839A1 (fr) * 2010-01-08 2011-07-14 株式会社日本触媒 Agent de réduction du retrait pour matériau hydraulique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014159357A (ja) * 2013-02-21 2014-09-04 Nippon Shokubai Co Ltd 水硬性材料用改良剤組成物

Similar Documents

Publication Publication Date Title
JP4921905B2 (ja) 新規な重合体およびそれを用いたセメント混和剤
KR101913767B1 (ko) 시멘트용 첨가제, 시멘트 조성물 및 시멘트용 첨가제용 원료
JP4987533B2 (ja) セメント混和剤
JP5562008B2 (ja) 水硬性材料用収縮低減剤
JP2008230865A (ja) 水硬性材料用添加剤およびそれを用いた水硬性材料組成物
JP2018140920A (ja) セメント用添加剤およびセメント組成物
JP5449024B2 (ja) 自己収縮低減剤
JP4877691B2 (ja) セメント混和剤及びセメント組成物の施工方法
JP5305063B2 (ja) フライアッシュ含有セメント組成物用添加剤およびセメント組成物
WO2012111683A1 (fr) Modificateur pour matériau durcissable par l'eau
JP5869903B2 (ja) 水硬性材料用添加剤
JP5473997B2 (ja) セメント混和剤
JP5777451B2 (ja) 水硬性材料用改質剤
JP6739291B2 (ja) セメント用添加剤およびセメント組成物
JP2010006701A (ja) セメント混和剤の製造方法
JP5777453B2 (ja) コンクリート改質剤
JP5777452B2 (ja) コンクリート改良剤
JP7027105B2 (ja) セメント組成物
JP5798469B2 (ja) 水硬性材料用改良剤
JP5084672B2 (ja) 水硬性材料用収縮低減剤
JP7282623B2 (ja) セメント用強度向上剤、セメント用添加剤、セメント組成物、および、セメント強度向上方法
JP7300651B2 (ja) コンクリート組成物の製造方法
JP6116283B2 (ja) 水硬性材料用改良剤組成物
JP6223750B2 (ja) 水硬性材料用添加剤

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12746700

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12746700

Country of ref document: EP

Kind code of ref document: A1