WO2011104416A1 - Matériaux à base de fibres polymères, biocides et insecticides destinés à la production de terrazzos, de préfabriqués en plâtre, de fibro-ciment et de panneaux agglomérés - Google Patents

Matériaux à base de fibres polymères, biocides et insecticides destinés à la production de terrazzos, de préfabriqués en plâtre, de fibro-ciment et de panneaux agglomérés Download PDF

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WO2011104416A1
WO2011104416A1 PCT/ES2011/070127 ES2011070127W WO2011104416A1 WO 2011104416 A1 WO2011104416 A1 WO 2011104416A1 ES 2011070127 W ES2011070127 W ES 2011070127W WO 2011104416 A1 WO2011104416 A1 WO 2011104416A1
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cement
biocidal
terrazzo
compounds
fibers
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PCT/ES2011/070127
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English (en)
Spanish (es)
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Guillermo Miro Escudero
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Guillermo Miro Escudero
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    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00586—Roofing materials

Definitions

  • the invention relates to prefabricated elements of general use for sanitary and decorative use.
  • the invention is refers to materials with polymeric fibers, biocides and insecticides for terrazzo flooring, continuous terrazzo, and continuous with epoxy, monolayer terrazzo, compact marble; and prefabricated elements for general use for sanitary and decorative uses.
  • a second object of the invention relates to development of prefabricated parts of plaster, plaster, perlite; Plates fibro-cement and agglomerated boards, all with biocidal properties and insecticides
  • Terrazzo floors allow elegant combinations of different colors and formats giving us the perspective of a continuous surface, flat and without joints, which is no further from the reality, because in the process of working of the pavements either of tile or continuous (without joints), over time in the settlement process, dilation, contraction thereof, as well as during normal use, imperfections or microcracks appear unfailingly. This applies also to the prefabricated materials of plaster, fibro-cement parts, vegetable agglomerates, widely used in the industry of building.
  • WO 2009092748 refers to the use depoliolefins with isotactic structural elements in materials pavements and floors, especially in artificial carpets and grass.
  • the patent refers only to artificial flooring and flooring, and does not cover, in particularly pavements of the terrazzo type.
  • the patent JP 11310681 describes the obtaining of the productPlastisolque has an excellent storage stability and low viscosity, capable of forming an excellent film for its mechanical and optical properties, and suitable for materials in obtaining floors and pavements, and soil layers. It is prepared by mixing (A) - 100 parts by weight of a (co) type (meta) acrylate polymer with an average weight molecular weight of 2,000,000 g / mol, (B) 5-400 parts by weight of a softener compatible with Components A and (C) 9-700 parts by weight of an inorganic filler.
  • JP 1170653 claims a composition for a hydrophobic layer of pavements, with processability and elasticity. Describes obtaining the product as a mixture of a 5-20% asphalt emulsion weight of the total solids content of the emulsion, cement, expanded material, etc .; of an aggregate material, ground stone and / or sand; 10-30% weight of expanded material, based on calcium oxide; 20% cement weight; 0.5-3% of polypropylene fiber chips, or 1-10% weight of glass fibers .
  • JP 59196369 claims a pavement material that does not use asphalt, to which siliceous sand is added, and fragments of natural fibers to a thermoplastic resin , which is mainly composed of 50-90% resin thermoplastic resin with an index of fusion of 100 or less, and 50-10% of a thermoplastic resin with a melt index of 150 or higher, and based on ethylene / vinyl acetate copolymer resins, polypropylene, polyethylene, polyesters, etc.
  • Microorganism WCC Bacteria Escherichia coli minus 10 Pseudomonas aeruginosa 75 Proteus vulgaris fifty Bacillus subtilis 10 Enterobacter aerogenes fifteen Molds Aspergilus niger 7.5 Penicilum mineoluteum 7.5 Fusarium solani 150 Geotrichum candidum 125 Yeasts Candida albicans fifteen Saccharomyces cerevisiae 10
  • the bactericidal agent contains graphite powder, silica or its calcined product, a natural stone with 0.1-% carbon weight and between 67-92% SiO2 weight.
  • the agent can be dissolved or mixed with pumice, resins, paper fibers or fabrics, concrete, rubber or vinyl resins .
  • the material is used in the agricultural industry, as a cleaning and bactericidal agent for wastewater, swimming pools, deodorizing agent, and bactericide for roofing and flooring materials.
  • Patent KR20010068275 claims a bactericidal ceramic powder containing silver, which is added to polyester , nylon, polypropylene , acrylic , urethane , or its analogs, at 0.3 to 10% by weight and by spinning the fiber is obtained.
  • Oxidized forms of copper, zinc, titanium, magnesium, and in metallic form of silver and gold in the form of nanomaterials are mixed with polymer fibers ( http://www.gotocmp.com/insight/00458163.html ).
  • the addition of gentamicin on polypropylene has been tested by immobilization of gentamicin and activation with hydrogen peroxide.
  • the patent KR20040052953 claims a composition of cement terrazzo for an adequate environmental environment, with properties bioactive, improved with respect to traditional materials, emission far infrared, anionic radiation, bactericidal and fungicidal activity, Deodorizing effect, non-flammable and durability. It comprises 18-25% cement conventional, 65-70% crushed dolomite screened, 5-30% mineral slag; 2-8% phosphate and 5-10% zeolite that confers pozzolanic properties. Be refers the description only to a material capable of forming terrazes with housing Bioactivity without fibers.
  • Document KR20040052584 describes a composition for cement terraces. You can remove organic compounds or bacteria from walls, paints, thanks to its improved infrared emission properties distant, anionic radiation, bactericidal and fungicidal activity, effect deodorizer, which allows you to create a clean environment for development normal life inside the premises. Contains 18-25% cement weight conventional, 65-70% crushed dolomite, 3-5% slag ore, 2-4% of ilite ore, 3-5% of pozzolans. It refers only to a material capable of form terrazzas with low bioactivity, and indicates the use of fibers.
  • the wood is remarkably resistant to damage biological, but there are a number of organisms have the ability to use the wood in a way that alters its characteristics.
  • the organisms that They attack the wood include: bacteria, fungi, insects and marine drillers. Some of these organisms use wood as a food source, while others use it for shelter. This is important in the prefabricated bearing wood fibers, cellulose, etc.
  • Fungi are simple organisms that use the Wood as a food source. They move through the wood like a net microscopic that grow through the holes or directly penetrating the wood cell wall. The hyphae produce enzymes that degrade the cellulose, hemicellulose, or lignin that absorbs degraded material to End the disintegration process. Once the fungus gets a Enough amount of wood energy, produces a fruiting body sexual or asexual to distribute reproductive spores that can invade other woods
  • Insects are among the most common organisms on earth, and many of its species possess the ability to use the wood for shelter or food. Of the 26 orders of insects, 6 cause damage to timber. Termites (Isoptera), beetles (Coleoptera), bees, wasps, and ants (hymenoptera) are the primary causes of most of the destruction in the wood. There are 2,000 species of termites that are distributed in areas where the annual average temperature is 10 ° C or higher.
  • Biocides according to the present invention the compounds in some cases are added directly to the compositions of the prefabricated elements, in others they can be previously mixed with the polymeric fibers.
  • various compounds have been used that adjust to the biological demands depending on the territorial and geographical conditions.
  • biocidal compounds involved in formulations of the invention in a variable proportion may be mentioned salts of zinc oxide, copper oxide, trietanol, triazine, pyridine, and organic compounds containing metal ion carrier groups, more usually silver and copper.
  • it is used preferably the mixture of 2,2 ', 2 (hexahydro-1,3,5-triazine-1,3,5-tri-yl) trietanol with 2-pyridethanol -1-sodium oxide.
  • These compounds are characterized by inhibiting growth of bacterial and fungal colonies, gram + and spectrum bacteria gram-. They are added in amounts of 0.02-10%, and preferably 0.02 to 0.10% of bactericidal compounds
  • the present invention proposes its use in the manufacture of fibro-cement plates and chipboard to achieve insecticidal and repellent properties.
  • they are selected from the family of pyrethroid compounds, such as permethrin, deltamethrin, aletrine, fenvalerate, fluvalinate, and products with trade names Ciflutrin, Biphentrine, Fenpropatrin, Resmethrin, Sumitrian, Sphevalerate, Cypermethrin, Lambda-Cimetrothrintrine, Tetrinatrine, Tetratrintrine, .
  • pyrethroid compounds such as permethrin, deltamethrin, aletrine, fenvalerate, fluvalinate, and products with trade names Ciflutrin, Biphentrine, Fenpropatrin, Resmethrin, Sumitrian, Sphevalerate, Cypermethrin, Lambda-Cimetrothrintrine, Tetrinatrine, Tetratrintrine,
  • Plastic fibers provide structural reinforcement to the resulting material.
  • the fibers according to the present invention among others may be those of propylene and polyesters, and glass fibers.
  • the polypropylene fibers and their copolymers are those that provide the best results.
  • the characteristics of the polymer fibers can be varied at will, depending on the particular case, varying the type of polypropylene, and alternatively using copolymers of propylene and other olefins . They can be pre-mixed with biocides and insecticides, in the form of a liquid suspension or directly in powder form. They are added in amounts of 0.02 to 10%, and preferably 0.02 to 1.0% of the dry mass.
  • the raw material once mixed is ready to combine it with the different natural or synthetic pigments intended for Obtaining the different desired designs.
  • Example of a frequently used pigment - Extra Red Oxide features Standard Value Analysis method Fe2O3 84.00% ISO DIS 1248 SiO2 5.01% ISO DIS 1248 CaO 2.28% ISO DIS 1248 MgO 2.00% ISO DIS 1248 Mn 0.06% ISO DIS 1248 Al2O3 2.50% ISO DIS 1248 S 0.05% ISO DIS 1248 P 0.03% ISO DIS 1248 Soluble salts 0.13% ISO 787 Lost calcination 7.00% ISO 787 Oil absorption 15.60 g / 100 g ISO 787 Coloring Power 68% ISO 787 PH value 8 ISO 787 Opacity 97% ISO 787 Density 4,397 g / cm3 ISO 787
  • the present invention seeks through the addition of polypropylene fibers with bactericides in a manufacturing process pavements, make these have biocidal properties without varying fundamentally the aesthetics, or the functionality of a material that should comply with regulations approved in the market. This, without recourse to the addition of chemicals for the prevention of infections that as a rule they will appear in biologically aggressive environments, either by operating characteristics of the premises where they have been applied (use in health centers, hospitals, etc.), or even on their own climatological characteristics of the environment (subtropical and tropical climate with high temperatures and relative humidity, marine climate, etc.).
  • the present invention is applicable and constitutes a biocidal solution pathway that may be introduce in almost all pavement manufacturing processes of the types Terrazzo, continuous and continuous terrazzo with epoxy, monolayer terrazzo and marble compact, micro cement and other floors of sanitary interest or decorative.
  • Such terracing biocides object of the present Invention consist of the following properties:
  • - Selected aggregates - marble, granite and limestone The manufacturing process is based on selected aggregates of marble, granite and limestone, etc., of varying size comprising grains between 0.2 and 40 mm approximately according to the type of termination and use designated . Additionally, - siliceous sands and fillings.
  • Non-stone elements aggregates are used in combination with non-stone elements such as glass and other hard elements produced by domestic and industrial recycling, which, like stone, are classified by different sieves, crushing the material to the necessary sizes and even washing, according to the intended use in the manufacture of the types of pavement in slab or continuous.
  • the cement - water ratio is chosen according to the regulations, or specific use to its use. Kneading water is understood as the amount of total water contained in the fresh concrete. This amount is used to calculate the water / cement ratio (A / C).
  • Kneading water is composed of:
  • Kneading water has a double function in the concrete technology: on the one hand it allows the hydration of the cement, and by the other is indispensable to ensure ease of handling and good concrete compaction.
  • the kneading process is carried out with all the raw material selected in a kneader, for example with a horizontal double axis until it has a homogeneous mixture.
  • Vibration time what time of Vibration is the most appropriate, since it depends on the dosage used, the paste fluidity, aggregate type, cement type, ratio cement / marble dust, etc.
  • Pressing time depends on the tile format manufactured, and is directly proportional to the thickness of it. In such a way that thick tiles need a compaction time (pressing) greater than those of normal thickness. Insufficiently pressed tiles They have low mechanical resistance.
  • Pressing pressure employment is always recommended of presses that have double pressing, since in this way not only ensures adequate compaction of it, but also get the Higher resistance.
  • the first pressing is usually done at a pressure of about 80 kg / cm2 and the second around 200 kg / cm2.
  • Pressing proceeds to the absorption of excess water through filters introduced into the pressing plate by driving it through a circuit for its subsequent recovery and use, a mold is placed in the pressing mold slotted decorative print for outdoor flooring.
  • the setting of terrazzo tiles is an aspect as important as it is in any other cement derivative. Is very important to ensure optimal curing conditions avoiding as much as possible abrupt variations in temperature, low ambient humidity and currents of air.
  • polishing process it is carried out in the factory based on successive steps with diamond tools, or by finishing with a printed mold for outdoor flooring.
  • Preparation and curing of the pavement On continuous pavements, during the kneading step, the operation of pouring the fiber and the biocide to the prepared dough is carried out. After a suitable final kneading, the kneaded dough is poured on the support prepared on site, extended, leveled, compacted and the occluded air is removed either with a barbed roller or with a mechanical finish type electric grinder, at which is then left for a convenient curing with film-forming liquids.
  • the resulting layer can be covered with a textile material to avoid its sudden drying and the possible appearance of fissures due to shrinkage, rapid water loss or surface drying:
  • Cured film-forming products are those that, applied on the surface of the fresh concrete, they form a continuous membrane which reduces moisture loss during the first hardening period, while reducing the temperature rise of the concrete exposed to the sun's rays, due to the clear pigmentation of the membrane.
  • the products Filmogens in general will be liquid compounds, paint type, consisting of a base and a volatile solvent, which in no case will produce harmful effects on the concrete
  • Liquid fiber suspension and biocide can be introduced into almost all the manufacturing processes of the types of terrazzo, continuous terrazzo and continuous with epoxy, monolayer terrazzo and compact marble, and others.
  • Polymeric fibers and biocidal compounds are those described for the terrazzo formulation. The difference is made up the use in fibro-cement plates and chipboard boards insecticides that generally also have repellent properties.
  • the insecticides are preferably selected from the family of synthetic pyrethroid compounds, such as permethrin, deltamethrin, aletrine , fenvalerate, fluvalinate, and products with trade names Ciflutrin, Biphentrine, Fenpropatrin, Resmethrin, Sumitrian, Permethrin, Sphevaletrine, Cipermetrine, Cipermethrin, Cipermethrin, Cipermethrin, Cipermethrin, Cipermetrine, Lambdatrine Tetramethrin and Tralometrine.
  • synthetic pyrethroid compounds such as permethrin, deltamethrin, aletrine , fenvalerate, fluvalinate, and products with trade names Ciflutrin, Biphentrine, Fenpropatrin, Resmethrin, Sumitrian, Permethrin, Sphevaletrine, Cipermetrine, Cipermethrin, Cipermethrin, Ci
  • the prefabricated parts developed from plaster, plaster, perlite find their use as plaques for roofs and walls as a covering and covers of installations preferably of air conditioners and areas of difficult bacteriological decontamination. It is well known the affectation that may eventually experience the installations of air conditioning by biological contamination such as fungi or bacteria that reproduce easily in filters, refrigeration units or insulating panels of the pipes because in them they find ideal conditions of humidity, temperature and nutrients that favor its growth.
  • SEE Sick Building Syndrome
  • some of the manifestations of the SEE are eye stinging, dry skin, nasal congestion, hoarseness. Even more severe diseases have been described: hypersensitivity pneumonitis, humidifier fever, asthma, chronic rhinitis, dermatitis. Exceptionally, but with a very serious nature, the dreaded Legionellosis may appear.
  • fibers and bactericides are carried out preferably with a proportion of fibers comprising from 0.3 to 10 g per kilo ( ⁇ 1.0%), taking into account that higher proportions frequently they would cause high mass density which would make handling difficult of the product.
  • typical values are between 0.005-0.40% of Bactericidal compounds and groups, from 0.01 to 0.10% of fibers.
  • the preparation is done by adding the biocide and polymeric fibers to the dough, using an orbital concrete mixer for kneading, or also a monojet PFT bag mixer, for pouring into metal, rubber or silicone molds.
  • the filling is done, performing a manual or mechanical vibration, eliminating excess material, and then pressing. Subsequently, curing, stacking and drying takes place within suitable temperature and humidity ranges that are previously determined for each type of prefabricated parts in particular.
  • the prefabricated elements developed have binding characteristics, consisting of the components of the stone binders type, such as gypsum, lime, magnesia, etc .; hydraulic binders such as cement, hydraulic lime, concrete, hydraulic tile; and organic binders of the type of resin and bituminous resins.
  • the developed elements are destined to the preparation of smooth profile plates mostly composed of fibers minerals and vegetables, such as cork and cellulose, pine, cork oak, eucalyptus and coconut bark and other elements that start from the possibility provided by the existence of a local recycling process, all bathed in resins.
  • the Cement addition is done depending on the resistance you want get, usually up to 25-30%.
  • the plates can be used to perform roofs, vertical walls and roof coverings for their qualities flame retardants and antimicrobials Particular compositions are selected in dependence on the desired physical and insulation physical properties. its Indoor use has proven successful. Outside at present utilization is pending long-term trials currently underway for the determination of its useful life in contact with the elements Weather
  • the manufacturing of the plates is done by a process continuous, in which the panels are usually manufactured on sheet metal 5 mm thick steel where the concrete is compacted in an extruder. After the extrusion if necessary the panels are cut according to the desired size, just during the manufacture of the plates is that the fibers are added of propylene, the biocides, in a 10 to 2000 g of biocide with a wide range of activity, and insecticides depending on the intended use.
  • the plates are they can add certain amounts of an insecticide together with the biocide repellent.
  • typical values are between 0.01-0.40% of Bactericidal compounds and groups, from 0.01 to 0.10% of polymeric fibers and 0.01-0.06% insecticidal compounds.
  • the pigment is added in this phase of the manufacturing so that the color obtained has great durability.
  • the present invention can be made boards with biocidal properties and insecticides for coating providing an insulating, antimicrobial, and insecticidal aesthetic quality and repellent, from recycled materials and forest use.
  • the agglomerates of plant origin they have been made based on the addition of Bactericidal and insecticidal compounds to wood chip conglomerates untreated, preferably pine, cork oak, eucalyptus; cellulose of medium or light density; cork and crushed particles of coconut bark, conglomerates all of which have different vegetable fibers characteristics, being destined to the manufacture of boards of different density and thicknesses. They are used as roof coverings, as covers of air conditioning installations, walls and floors on fixed supports whether brick walls, mortar plasters mastered. Too find a decorative use in interiors of buildings, screwed on the guides or battens as tables for solid pallets or Traditional
  • the boards are made of fibrous elements in different progressive granulometries to facilitate dry extrusion and a binder based on synthetic resins, or on the contrary of wet woods under high pressure and temperature to bond the fibers, using the same natural resins contained in wood materials. Later visible faces are sanded according to the desired finish.
  • Polymeric fibers, and biocides and fungicides typically they are added together in the manufacturing process during the stage kneading before extrusion. In general typical values are found between 0.005-0.40% of compounds and bactericidal groups, from 0.01 to 0.10% of polymeric fibers and 0.01-0.06% insecticidal compounds
  • the adhesives used they depend on the use to which the type of boards is intended; it is possible to use mainly epoxy resins, or lasaminorresins, urea-formaldehyde and melanin-formaldehyde, as adhesives to make chipboard and plywood.
  • the agglomerates of plant fibers and a small amount of polymeric fibers and biocide are employs an epoxy resin, which gives a certain rigidity to the insulator.
  • Figure 1 are two photos of the growth inhibition halo of the Staphylococcus aureus ATCC 29213 strain
  • Figure 2 are two photos of the growth inhibition halo of the Escherichia coli strain ATCC 25922
  • Figure 3 is a photo of the growth inhibition halo of the strain Pseudomonas aeruginosa ATCC 27853
  • Figure 4 is a photo of the halo of growth inhibition of Enterobacter aeriogenes strain
  • Figure 5 are two photos of the growth inhibition halo of the methicillin- resistant Staphylococcus aureus strain (MRSA).
  • Figure 6 is a photo of the growth inhibition halo of the Candida albicans strain
  • Figure 7 is a photo of the growth inhibition halo of the Escherichia coli BLEE strain
  • biocidal compound the mixture of two was used compounds 2,2 ', 2 (hexahydro-1,3,5-triazine-1,3,5-tri-yl) trietanol and 2-pyridethanol -1-sodium oxide.
  • a low-risk pyrethroid concentrate ectoparasiticide was used, based on water with an active principle derived from cypermethrin and acting with a direct toxic action and an indirect repellent on lepidoptera, beetles, hemiptera and other orders Of agricultural importance.
  • the method used for evaluation was diffusion according to the Disc-Plate Antibiogram Method .
  • the Disco-Plate Antibiogram is based on the work of Bauer , Kirby et al. and is one of the methods that the National Committee for Clinical Laboratory Standards (NCCLS) recommends for the determination of bacterial sensitivity to antimicrobial compounds
  • a 20 mm monolayer terrazzo sample was tested thick, formulated with white cement and aggregate of marble aggregates and glass and to which it is added for biocide analysis according to the present invention the mixture of two compounds 2,2 ', 2 (hexahydro-1,3,5-triazine-1,3,5-tri-yl) trietanol and 2-pyridethanol -1-sodium oxide.
  • the disk-plate antibiogram is one of the methods that the National Committee for Clinical Laboratory Standards (NCCLS) recommends for the determination of bacterial sensitivity to antimicrobial compounds.
  • NCCLS National Committee for Clinical Laboratory Standards
  • the disk-plate antibiogram consists of depositing, on the agar surface of a Petri dish previously inoculated with the microorganism, blotting paper discs impregnated with the different antibiotics. As soon as the antibiotic impregnated disc is brought into contact with the wet surface of the agar, the filter absorbs water and the antibiotic diffuses into the agar. The antibiotic diffuses radially through the thickness of the agar from the disk forming a concentration gradient. After 18-24 hours of incubation, the discs appear surrounded by a zone of inhibition.
  • the antibiotic concentration at the interface between growing bacteria and inhibited bacteria is known as critical concentration and approximates the minimum inhibitory concentration (MIC) obtained by dilution methods. There are, therefore, inhibition diameters, expressed in mm, standardized for each antimicrobial.
  • Mueller-Hinton agar is used for gram-negative bacteria and Staphylococcus.
  • Mueller-Hinton blood is used for Enterococcus .
  • Staphylococcus aureus ATCC 29213 strain recommended for the control of antimicrobials used against gram-positive bacteria.
  • Escherichia coli ATCC 25922 strain recommended for the control of used against gram-negative bacteria
  • Pseudomonas aeruginosa ATCC 27853 strain recommended for the control of antimicrobials used against gram-negative bacteria and particularly with aminoglycosides.
  • MRSA Methicillin-resistant Staphylococcus aureus
  • a terrazzo for slabs was prepared with the following ratios per 1000 kg of total mixture: Cement class: CEM II / BM (V-LL) 42.5 R 168 kg Limestone fragmented and screened, grain 5-35 mm 340 kg 0.2 arena 200 kg Marble fragmented powder, screened and washed, 5-10 mm 98 kg Pigment type A, Red oxide 4 kg Water 189.3 kg Polypropylene fibers 0.4 kg Biocide 0.3 kg Total 1000 kg
  • Polypropylene polymer fibers were added in the form of a liquid suspension to prefabricated terraces during the kneading process, at the time a homogeneous mixture of Kneading
  • the biocide used was the mixture of two compounds:
  • a terrazzo was prepared for continuous pavement with minor modifications of the components with respect to embodiment No. 1, with the following ratios per 1000 kg of total mixture: Cement class CEM II / BM (V-LL) 42.5 R 180 kg Sand 175 kg Limestone fragmented and screened 6-12 mm 400 kg Fragmented granite, screening and washing 0.4-12 mm 145.3 kg Pigment type B Green, (dichromium trioxide) 5 kg Water 140 lt Polymeric fibers 0.5 kg Biocide 0.2 kg Total 1000
  • the biocide used was the same mixture of the two compounds:
  • biocide used in embodiment No. 3 was the same as that of embodiments No. 1-2, that is, the mixture of compounds:
  • the repellent insecticide has been unpiretroidesynthetic - Cypermethrin , which acts with a direct toxic action and an indirect repellent on lepidoptera, beetles, hemiptera and other orders
  • Prefabricated plaster parts were prepared with biocidal properties They were tested as prefabricated parts for roofs and walls with incorporation of fibers with biocidal properties at 0.007%.
  • An orbital concrete mixer was used for kneading, the mixture was poured into place by pouring it using a bag mixer PFT monojet type equipped with a mechanical whisk with a rotation of 100 to 800 rpm, using a quantity of water between 22-11% of water depending on the desired consistency until a homogeneous, soft, plastic and lump free. It was poured into metal molds, imparting a mechanical vibration, with which excess material was eliminated. TO Then the pieces were pressed.
  • the thickness of the pieces remained between 12-16 mm
  • Composition of the plates Component Quantity kg Cementclass CEM II / B-M (V-LL) 42.5 R 60.00 Marmolina, granulometry 1 mm 25.00 Pine sawdust, fraction 0.05 to 0.1 mm 35.00 Pine sawdust, fraction 0.1 to 1 mm 35.00 Recycled pine chip **, up to 5 mm 50.00 Polypropylene Fibers * 1.00 Biocide 0.20 Repellent Insecticide *** 0.10 Phenol-formaldehyde binder resin 58.00 Total 214.30
  • the manufacture of smooth profile plates is made by Acotec technology by which the plates were manufactured on 5 mm thick steel sheets. The mixture was compacted in an extruder and after extrusion the panels were cut according to the measure of 60x60 cm.
  • Medium density agglomerated boards were prepared of wood residues of pine and eucalyptus, with both smooth faces and They manufactured by a dry process. You can work as if it were solid wood and receive the paints well. They were manufactured from their fibrous elements in progressive granulometries from 3 mm to 32 mm for facilitate dry extrusion. An epoxy resin binder was used to join the fibers, and the visible faces were sanded according to the finish wanted.
  • the plates were added along with the biocide certain amounts of the Insecticide repellent of the previous point, the pyrethroidsynthetic - the Cypermethrin, which acts with a direct toxic action and an indirect one of repellency on lepidoptera, beetles, hemiptera and other orders.
  • the manufacturing was carried out according to the technology of GmbH Anthon, in a machinery and equipment: Shuferweg 5 D-24941 Flensburg.

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  • Ceramic Engineering (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
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Abstract

Les fibres polymères et biocides dans les terrazzos et les matériaux préfabriqués de la présente invention, améliorent leurs propriétés mécanico-physiques, et offrent une protection contre les micro-organismes du spectre gram+ et gram-, une stabilité, une qualité et une période d'exploitation améliorées des matériaux et des objets construits. Les terrazzos (dallages) continus et liés à la résine époxyde, terrazzo monocouche, marbre compact comprennent des agrégats, des sables silices et d'autres remblais; des éléments non pierreux et du ciment, et 0,02 à 10% de fibres polymères qui comprennent 80-100% de polypropylène et/ou de copolymères de propylène, et 0,02 à 10% de composés bactéricides, tels que l'oxyde de zinc, le triéthanol, l'oxyde de cuivre, la triazine, la pyridine et l'oxyde de sodium, les ions d'argent et de préférence le mélange de 2,2',2(hexahydro-l,3,5-triazine-l,3,5-tri-il)triéthanol et 2-pyridiéthanol -1-oxyde de sodium. Les parties préfabriquées sont préparées à partir de plâtre, de gypse, de perlite. Les plaques de fibro-ciment de gypse, d'hydroxyde de calcium, de magnésium; jusqu'à 30% de ciment, d'hydroxyde de calcium hydraulique, d'arlite, de béton; des fibres végétales telles que le liège, la cellulose, le pin, le chêne-liège, l'eucalyptus et l'écorce de noix de coco; et des agglomérants organiques tels que des résines époxydes et bitumineuses. Les panneaux agglomérés sont constitués de copeaux de bois de pin, de chêne-liège, d'eucalyptus; de cellulose de densité moyenne ou légère, de liège, et de particules triturées d'écorce de noix de coco. Les préfabriqués sont constitués de 0,01-0,10% de fibres polymères, de 0,01-0,40% de ces composés bactéricides. Les plaques de fibro-ciment et les panneaux de conglomérats végétaux contiennent en outre 0,01-0,06% de pyréthroïdes insecticides.
PCT/ES2011/070127 2010-02-26 2011-02-26 Matériaux à base de fibres polymères, biocides et insecticides destinés à la production de terrazzos, de préfabriqués en plâtre, de fibro-ciment et de panneaux agglomérés WO2011104416A1 (fr)

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ES201000240A ES2364564B2 (es) 2010-02-26 2010-02-26 Terrazo antibacteriano y metodo de fabricacion del mismo
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ES2571995A1 (es) * 2016-04-21 2016-05-27 Pavimentos De Tudela S A Composición para preparar prefabricados de hormigón y derivados del cemento con propiedades bactericidas y fungicidas, prefabricados de hormigón que la contienen y procedimiento de obtención de los mismos
WO2019046290A1 (fr) * 2017-08-29 2019-03-07 United States Gypsum Company Produit décoratif comprenant un agent de blanchiment encapsulé soluble pour inhiber la dégradation
CN111171447A (zh) * 2020-01-20 2020-05-19 深圳市捷安纳米复合材料有限公司 杀菌塑料母粒及其制备方法和应用
CN114436580A (zh) * 2020-10-30 2022-05-06 贵州成智重工科技有限公司 一种绿色机制集料普通超高性能砼
CN116514484A (zh) * 2023-04-17 2023-08-01 河海大学 一种多功能混凝土及其制备方法
WO2024205543A1 (fr) * 2023-03-24 2024-10-03 Istanbul Teknik Universitesi Procédé de production de fibre nanocomposite utilisant du graphène obtenu à partir d'extrait de bois d'eucalyptus et un composite de nano-tio2 pour lutter contre les mauvaises odeurs

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WO2002032830A2 (fr) * 2000-10-17 2002-04-25 James Hardie Research Pty Limited Matiere composite en fibro-ciment utilisant des fibres de cellulose durables traitees aux biocides
WO2005014256A1 (fr) * 2003-07-11 2005-02-17 Cosentino, S.A. Materiau composite presentant l'apparence de la pierre naturelle
WO2007111859A2 (fr) * 2006-03-22 2007-10-04 Nova Chemicals Inc. Compositions de beton leger contenant des agents antimicrobiens

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Publication number Priority date Publication date Assignee Title
WO2002032830A2 (fr) * 2000-10-17 2002-04-25 James Hardie Research Pty Limited Matiere composite en fibro-ciment utilisant des fibres de cellulose durables traitees aux biocides
WO2005014256A1 (fr) * 2003-07-11 2005-02-17 Cosentino, S.A. Materiau composite presentant l'apparence de la pierre naturelle
WO2007111859A2 (fr) * 2006-03-22 2007-10-04 Nova Chemicals Inc. Compositions de beton leger contenant des agents antimicrobiens

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2571995A1 (es) * 2016-04-21 2016-05-27 Pavimentos De Tudela S A Composición para preparar prefabricados de hormigón y derivados del cemento con propiedades bactericidas y fungicidas, prefabricados de hormigón que la contienen y procedimiento de obtención de los mismos
WO2019046290A1 (fr) * 2017-08-29 2019-03-07 United States Gypsum Company Produit décoratif comprenant un agent de blanchiment encapsulé soluble pour inhiber la dégradation
CN111171447A (zh) * 2020-01-20 2020-05-19 深圳市捷安纳米复合材料有限公司 杀菌塑料母粒及其制备方法和应用
CN114436580A (zh) * 2020-10-30 2022-05-06 贵州成智重工科技有限公司 一种绿色机制集料普通超高性能砼
WO2024205543A1 (fr) * 2023-03-24 2024-10-03 Istanbul Teknik Universitesi Procédé de production de fibre nanocomposite utilisant du graphène obtenu à partir d'extrait de bois d'eucalyptus et un composite de nano-tio2 pour lutter contre les mauvaises odeurs
CN116514484A (zh) * 2023-04-17 2023-08-01 河海大学 一种多功能混凝土及其制备方法

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