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
  • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
  • C04B24/24—Macromolecular compounds
  • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • C04B24/32—Polyethers, e.g. alkylphenol polyglycolether

Definitions

• the present invention relates to a cement box reducing agent and a cement composition.
• concrete cement mortar and concrete
• dry cracks are apt to crack. This is due to the large amount of drying. It is hoped that concrete with a low level of dryness will appear.
• alkylenoxyside adducts have been used for various purposes as cement admixtures.
• a polyoxyethylene alkyl allyl-alkyl (the alkyl group usually has 8 to 10 carbon atoms; the number of added moles of the ethylene oxide is 10 to 10) :
• Alkyl phenol Usually about 2 to 30 with respect to I-mol
• the volume of the polyethylene copolymer (the total number of moles of the alkylene pigment is usually 30 to 250) is Used as a dispersing agent and water reducing agent for cement, high-grade alcohol alkylene oxide added 3 ⁇ 4J (high-grade alcohol with 8 or more carbon atoms; 1 mole)
• alkylenoxide (5 to 30 mol adduct) is usually used as an air blowing agent for cement, an emulsifying stabilizer for cement-mixed latex, etc. Used.
• polyalkylene glycol (a 15- to 30-mol multi-layer of alkylene glycol), which is an asbestos or glass It is used as a dispersing agent for cement and other cement dispersants, and Lignin Sulfone as a dispersing agent for cement dispersants. It is used for the purpose of enhancing 3 ⁇ 4.
• the above-mentioned cement admixtures include those having a large number of added molecules of alkylenoxide or a large carbon dioxide.
• the present inventors have found that the cement does not have the property of being dry during cementation, does not exhibit the incombustibility of cement, and has a very low degree of concrete. As a result of diligent studies for the purpose of finding a cement diluent and cement extract that can produce tomatoes, the present invention was achieved. That is, the present invention
• R is an alkyl group of 1 to 7 carbon atoms, 7 t is a cycloalkyl group of 5 to 6 carbon atoms, and A is one or two of Alkylene group, ⁇ is from 1 to 10
• a cement-based additive comprising the compound represented by the formula:
• R is an alkyl group having 1 to 7 carbon atoms or a cycloalkyl group having 5 to 6 carbon atoms, and A is one or two types having 2 to 3 carbon atoms.
• An alkylene group of the formula (1), wherein n is from 1 to 10) is a cement composition comprising a compound represented by the formula:
• the compound represented by the general formula (1) can be obtained by adding ethylenoxy and / or propylenoxy to alcohols having 7 or less carbon atoms. Some are easily obtained by adding a lenoside.
• R is an alkyl group having 1 to 7 carbon atoms or a cycloalkyl group having 5 to 6 carbon atoms.
• examples of such a group include a methyl group, an ethyl group, a normal lobyl group, an imbrobyl group, a normal butyl group and an isobutyl group.
• ⁇ is an alkylene group having 2 to 3 carbon atoms
• n depends on the type of alkylene oxide to be added.
• the compound represented by the general formula (1) is obtained by adding ethylenoxide and / or propylenoxide to alcohol as described above.
• the compound is defined as an alkylene oxide, and other oxides, such as butylene oxide and styrene oxide, are converted to alkylene oxides having 2 to 3 carbon atoms. It may be co-added (usually 50 weight or less in all-year-old alkylene groups) to such an extent that performance is not impaired with the compound.
• Examples of the compound represented by the above formula (1) include, for example, CH 30 -C 2 3 ⁇ 40 ⁇ 3 H, CH 30 -C 3 H 60 TH, C 2 H S OC 20 H, CH O -C 3 3 ⁇ 40 ⁇ H, C 2 H 5 0-fC 2 3 ⁇ 4OWC 3 H 6 0 3 ⁇ 4 H, n-C 3 H 7 0- C 2 H 4 0-h H, i-C 3 H r 0 C 3 H e 0 H,
• the curd reducing agent for cement according to the present invention is composed of one or a mixture of two or more of the compounds represented by the formula (1). ) Can also be added as a composition consisting of:
• the cedars used for the treatment of hon-koshi are as follows: normal Baltland cement, early strong Baltland cement, medium Examples include thermal bolt cement, aluminum cement, blast furnace cement, and fly ash cement. Of these, the normal and early strong Voltland Cement are preferred.
• the amount of the basal agent in the present invention depends on the number of carbon atoms in the alkyl group of the ligated compound represented by the formula (1) and the number of added moles of the alkylenoxide. Although it can be variously changed, it is usually (X5 to 10 weight, preferably L5 to 5 weight? 6) for the cement. The usage amount is (X5 weight $ or less. The shrinkage effect is small, while when it exceeds 10% by weight, the strength such as concrete is less than that of the non-added one. The following is not enough for practical use.
• the amount of water used to cure the cement may be the amount needed to cure the cement, the amount of water the amount of cement is usually 29-90 wt ⁇ , Preferably 30 to 70 weight #.
• the amount of aggregate is such that the amount of cement / the amount of bone is usually 10-200 weight, preferably ⁇ 100 weight.
• the amount of the total reducing agent is usually as to 10% by weight with respect to the cement, and is usually based on the total weight of the cement, the water, and the aggregate. a It is possible to use 1 to 5 weight of c or other components (arbitrary components), such as calcium chloride, sodium chloride, and other metal chlorides.
• Metal sulfates such as sodium; triethanol, amines, tangible amines, etc., known cement hardening accelerators; alcohols, Known cement hardening retardants such as saccharides, starch, cellulose, and glycerin; known drugs such as zinc sodium, calcium nitrate, etc.
• Known cement dispersing agents such as ligone-sulfon-oxyl-forced rubber, naphthalene-sulfone, and holmarin. varied Also of the Ru and the like. The amount of these optional ingredients is always constant with respect to the cement.
• the procedure for adding the cementitious yield of the present invention is the same as that of the cementitious admixture which is usually carried out in one go.
• a small amount of a water-reducing agent is mixed in advance with kneading water to form a composition consisting of a shrinkage-reducing agent and water.
• Means such as adding an appropriate amount of bran-reducing agent can be used when mixing a mixture of ment and aggregate.
• the method of concreting the concrete to which the wax reducing agent of the present invention is added is the same as the conventional method, and is performed by ironing, filling the mold, spraying, and using a coking gun.
• the curing method may be any of air-drying curing, wet-air curing, underwater curing, and ripening promoting curing (steaming curing, autoclave curing, etc.). It may be used for business. Also, the affiliation in each case may be the same as before.
• the ⁇ ) ⁇ lubricant of the present invention is obtained by adding a small amount of alkylenoxide to alcohol, and is used as a surfactant such as a dispersant or a foam. Rather, it has the ability to interact with water-soluble solvents, but in this respect, what is known as alkylenoxide additive for cement mixing It is a very powerful tool. Iwayoshi's form of carrying out the invention
• Jeongjeong example describes the 0 invention, but the present invention is not limited to this:
• Each of the ⁇ -condensation-reducing agent of the present invention and the alkylene-added oxyside adduct other than the ⁇ -reducing agent of the present invention was added in an amount of 4 wt.
• the shrinkage test was carried out by the dial gouge method of JIS A 1129, the air flow rate was measured by JIS A 1116, and the degree of yolk was measured by JIS R 5201. You got Gogo.
• Curing was carried out for a certain period of time under an atmosphere of 20 ⁇ and a relative humidity of 50 ⁇ after 1 week of underwater curing.
• 1 of the five water-reducing agents is 1 mole of ethanol, 4 moles of ethylene chloride and 4 moles of propylene oxide. This is a random addition of a file.
• Example 1 A test was conducted in the same manner as in Example 1, except that the amount of Honshiki in Example 1 was reduced by ⁇ to 20% by weight with respect to the cement. Was. Profit
• a cement cured product using the same can be used as a cement cured product. It is useful as a civil engineering material, as a building material, as a building material, for floors, walls, roads, takashi, dams, breakwaters, drainage pipes, and other various structures. It is useful as a tall for gluing, such as lacquerware, brickwork, masonry, straw, and tiles.

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

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• 1981
  • 1981-03-02 JP JP81500786A patent/JPS593430B1/ja active Granted
  • 1981-03-02 US US06/377,200 patent/US4547223A/en not_active Expired - Lifetime
  • 1981-03-02 WO PCT/JP1981/000042 patent/WO1982003071A1/ja not_active Ceased
  • 1981-03-02 DE DE3152665T patent/DE3152665C2/de not_active Expired

Patent Citations (2)

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