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
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
• • 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
  • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
  • C04B20/10—Coating or impregnating
  • C04B20/1051—Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
  • C08L67/06—Unsaturated polyesters

Definitions

• the present invention relates to the preparation of a resin concrete constituted by a particular unsaturated polyester resin, having a particularly good resistance to hydrolysis, more especially a resin designed to resist the hydrolysis of the alkalis of a concrete produced with Portland cement, modified to have a coefficient of linear expansion close to that of ordinary hydraulic concrete.
• the object of the present invention is therefore the preparation of a resin concrete making it possible to overcome these drawbacks.
• the process according to the invention starts from a particular monomer of a polyester resin; the preparation of this resin is described in more detail in the Swiss patent (application filed the same day).
• One of the other constituents used in the process is an emulsion of a styrene-acrylate copolymer, mixed with a homopolymer of styrene, the whole diluted in water and this in a percentage allowing a easy dosage of the components and making incorporation easy in the final formula, the role of the product thus constituted being to reduce the shrinkage of the base resin, during its polymerization.
• a powdered polyvinyl acetate / versatate copolymer will be added and mixed with the dry parts of the powder component (cement-aggregates).
• a coupling agent will be distributed on these aggregates, as recommended by the manufacturers, for example methacryl oxy-propyl -tri-methoxy 1 year (MEMO from Dynamit Nobel or A 174 from Union Carbide) the role of this silanol being improve the adhesion of the resin concrete to the hydraulic concrete support.
• MEMO methacryl oxy-propyl -tri-methoxy 1 year
• the catalyst normally necessary for the polymerization, therefore for the hardening of the resin concrete could be any conventional peroxide which is used for the hardening of unsaturated polyester resins. Since the resin concrete will have multiple chances of being in contact with water, we will use benzo ⁇ l peroxide, powder and flégmatisé, mixed in the dry part of the formulations, it is also possible to use an ammonium sulfur peroxydi; as for the activator normally necessary to accelerate the decomposition of the peroxide, it will be chosen from among the most stable over time, when mixed with the resin, for example di-methyl-para-toluidine, although any other tertiary amine may be used to regulate the setting time (useful working time).
• the resin dilution monomers may be of any type generally used in this type of resin, they will be chosen according to the destination of the final mortar, that is to say injection into the cracks of a structure, repair of a screed or facing, repair of spallings, etc.
• Compressive strength 75 MPa
• Such a mortar has a useful life of 1 hour, at a temperature of + 20 ° C.

Landscapes

• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Engineering & Computer Science (AREA)
• Organic Chemistry (AREA)
• Structural Engineering (AREA)
• Materials Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Inorganic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Macromonomer-Based Addition Polymer (AREA)
• Curing Cements, Concrete, And Artificial Stone (AREA)
• Compositions Of Macromolecular Compounds (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=4244958

Family Applications (1)

Country Status (4)

Families Citing this family (9)

Family Cites Families (7)

• 1990
  • 1990-06-28 EP EP19900909617 patent/EP0447499A1/de not_active Withdrawn
  • 1990-06-28 AU AU59288/90A patent/AU5928890A/en not_active Abandoned
  • 1990-06-28 WO PCT/CH1990/000157 patent/WO1991001951A1/fr not_active Ceased
  • 1990-06-28 JP JP2509689A patent/JPH04502899A/ja active Pending

Non-Patent Citations (1)

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