NO790227L - FIBER REINFORCED PRODUCT, AND PROCEDURE FOR PRODUCING IT. - Google Patents
FIBER REINFORCED PRODUCT, AND PROCEDURE FOR PRODUCING IT.Info
- Publication number
- NO790227L NO790227L NO790227A NO790227A NO790227L NO 790227 L NO790227 L NO 790227L NO 790227 A NO790227 A NO 790227A NO 790227 A NO790227 A NO 790227A NO 790227 L NO790227 L NO 790227L
- Authority
- NO
- Norway
- Prior art keywords
- cement
- fibers
- product according
- cement product
- polyelectrolyte
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 18
- 239000004568 cement Substances 0.000 claims description 71
- 239000003365 glass fiber Substances 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 229920000867 polyelectrolyte Polymers 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 229910010272 inorganic material Inorganic materials 0.000 claims description 14
- 239000011147 inorganic material Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 3
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 239000008394 flocculating agent Substances 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims 5
- 235000012239 silicon dioxide Nutrition 0.000 claims 5
- 239000011159 matrix material Substances 0.000 claims 2
- 239000012783 reinforcing fiber Substances 0.000 claims 1
- 239000010425 asbestos Substances 0.000 description 14
- 229910052895 riebeckite Inorganic materials 0.000 description 14
- 239000000853 adhesive Substances 0.000 description 13
- 230000001070 adhesive effect Effects 0.000 description 13
- 239000002002 slurry Substances 0.000 description 9
- 239000003292 glue Substances 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/42—Glass
- C04B14/44—Treatment for enhancing alkali resistance
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/1025—Coating to obtain fibres used for reinforcing cement-based products
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Laminated Bodies (AREA)
- Reinforced Plastic Materials (AREA)
- Paper (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Description
Fiberforsterket produkt, samt fremgangsmåte ved fremstilling av dette. Fiber-reinforced product, as well as the method for producing this.
Foreliggende oppfinnelse vedrører forsterkede sementer og bland-inger for anvendelse ved fremstilling av forsterkede semerit-holdige produkter. Det er velkjent at forskjellige fibere kan anvendes som forsterkning i forskjellige sementbaserte produkter. En av de mere velkjente forsterkede sementholdige. ■. produkter er sement forsterket med asbestfibere. Asbestfibrene kombineres med sement i form av oppbyggede laminater til å gi et forsterket produkt til å gi sementrør og sementark eller plater o.l., hvilke utviser gode styrkeegenskaper. The present invention relates to reinforced cements and mixtures for use in the manufacture of reinforced semirite-containing products. It is well known that different fibers can be used as reinforcement in different cement-based products. One of the more well-known reinforced cementitious. ■. products are cement reinforced with asbestos fibres. The asbestos fibers are combined with cement in the form of built-up laminates to give a reinforced product to give cement pipes and cement sheets or plates etc., which exhibit good strength properties.
Ved fremstilling av slike asbestfiberforsterkede sementholdige produkter er to fremgangsmåter velkjente for fagmannen. Den første er den såkalte Hatschek-prosess for fremstilling av forsterkede sementrør og den andre er Magniani-prosessen for fremstilling av plater fremstilt av forsterket sement. I begge prosesser blandes asbestfibere med en sementoppslemning til å gi en masse som plasseres i et porøst formningselement (én syl-inder for Hatschek-prosessen og et flatt, vanligvis endeløst belte for Magniani-prosessen). Fuktighet fra oppslemmingen fjernes ved å anvende våkum hvorved vann trekkes gjennom det porøse formningselement . In the production of such asbestos fiber-reinforced cementitious products, two methods are well known to those skilled in the art. The first is the so-called Hatschek process for the production of reinforced cement pipes and the second is the Magniani process for the production of slabs made from reinforced cement. In both processes, asbestos fibers are mixed with a cement slurry to produce a mass which is placed in a porous forming element (one cylinder for the Hatschek process and a flat, usually endless belt for the Magniani process). Moisture from the slurry is removed by using a vacuum whereby water is drawn through the porous forming element.
Den bakenforliggende mekanisme for asbestfibrenes effektivitet ved fremstilling av forsterkede sementbaserte produkter er for tiden ikke fullt ut forstått. Asbestforsterkningen synes å forbedre, i en vis grad, retensjonen av vann, når det forsterkede sement produktet fremstilles og derved forhindre en for sterk dehydratisering eller avvanning som ellers ville forårsake at sementproduktet ville falle sammen. The underlying mechanism for the effectiveness of asbestos fibers in the manufacture of reinforced cement-based products is currently not fully understood. The asbestos reinforcement appears to improve, to a certain extent, the retention of water when the reinforced cement product is manufactured and thereby prevent excessive dehydration or dewatering which would otherwise cause the cement product to collapse.
I Det har blitt postulert at asbestfibrenes høye overflateaktivitet I It has been postulated that the asbestos fibers' high surface activity
] gjør det meget reaktivt med hensyn til å fastholde små sement-j partikler sammen med vann og således forhindre at sementen føres ut med vannet under avvanningen på det porøse underlag. Denne høye reaktivitet understrekes av det faktum at asbestfibrene har et meget høyt spesifikt overflateareale i størrelseorden 10 - 20 m 2/g. Således er det antatt at de meget reaktive overflater av asbestf ibrene vil flokkulére. sementen og holde på denne til å gi et forsterket sementprodukt med gode styrke-egenskaper. ] makes it very reactive with regard to retaining small cement particles together with water and thus preventing the cement from being carried out with the water during dewatering on the porous substrate. This high reactivity is emphasized by the fact that the asbestos fibers have a very high specific surface area of the order of 10 - 20 m 2 /g. Thus, it is assumed that the highly reactive surfaces of the asbestos fibers will flocculate. the cement and hold this to give a reinforced cement product with good strength properties.
Forskjellige forsøk er utført med hensyn til å utelate asbest fra slike forsterkede sementbaserte produkter, men uten hell. Various attempts have been made to exclude asbestos from such reinforced cement-based products, but without success.
I fravær av asbestfibere dispergert i det sementholdige materiale vil hastigheten med hvilken vann fjernes, slik at det sementholdige produkt kan herdes, stige betydelig. I tillegg vil den først utviklede styrke av det forsterkede sementholdige produkt, før herdning, nedsettes drastisk som følge av den for store avvanning, hvilket kan føre til delaminering. In the absence of asbestos fibers dispersed in the cementitious material, the rate at which water is removed so that the cementitious product can harden will increase significantly. In addition, the initially developed strength of the reinforced cementitious product, before hardening, will be drastically reduced as a result of excessive dewatering, which can lead to delamination.
I tillegg til Hatschek og Magniani-prosessene er foreliggende oppfinnelse egnet ved utførelse av filterpresse-prosessen. In addition to the Hatschek and Magniani processes, the present invention is suitable for carrying out the filter press process.
I fransk patent nr. 2.317.250 er det foreslått delvis å erstatte asbestfibrene med glassfibere. Heller ikke denne teknikk har ført til suksess. Når glassfibere kombineres med et sementholdig materiale ved fremstilling av forsterkede sementbaserte produkter så har glassfibrene en tendens til å henge sammen og forbli i bunter og vil således forstyrre hastigheten med hvilken vann kan fjernes gjennom det porøse formningselement. Generelt vil til-stedeværelse av glassfibere i slike forsterkede sementprodukter gjøre disse, i hydratisert tilstand, for porøs og forårsake at vannet i sementoppslemmingen fjernes for raskt og utfører for store mengder av selve sementen. Fordi glassfibere har et ganske lavt overflateareale av størrelseorden 0,1 - 0,2 m<2>/g så utviser de ikke asbestens evne til å holde på verken sement eller vann. Før foreliggende oppfinnelse har det ikke vært mulig å fremstille på en Hatschek-maskin forsterkede sementprodukter som inneholder mere enn 2 vekt-% glassfibere. In French patent no. 2,317,250, it is proposed to partially replace the asbestos fibers with glass fibers. Nor has this technique led to success. When glass fibers are combined with a cementitious material in the manufacture of reinforced cement based products, the glass fibers tend to stick together and remain in bundles and will thus interfere with the rate at which water can be removed through the porous forming element. In general, the presence of glass fibers in such reinforced cement products will make them, in the hydrated state, too porous and cause the water in the cement slurry to be removed too quickly and carry out too large amounts of the cement itself. Because glass fibers have a fairly low surface area of the order of 0.1 - 0.2 m<2>/g, they do not exhibit asbestos' ability to retain either cement or water. Before the present invention, it has not been possible to produce reinforced cement products containing more than 2% by weight of glass fibers on a Hatschek machine.
^ I henhold til et trekk ved oppfinnelsen er det tilveiebrakt en^ According to one feature of the invention, there is provided a
I IN
fremgangsmåte for fremstilling av glassfiberforsterkede, sementi-baserte produkter. method for the production of glass-fibre reinforced, cement-based products.
Ifølge et mere spesielt trekk ved oppfinnelsen tilveiebringes behandlede glassfibere og en limblanding for anvendelse ved fremstilling av glassfibrene hvor et limbelegg på glassfibrene og tilsetningsmidler til sementoppslemmingen muliggjør at glassfibrene kan fordeles jevnt i en sementoppslemming og derved regu-lere hastigheten med hvilken vann kan trekkes av fra denne, ved fremstilling av glassfiberforsterkede, sementbaserte produkter. According to a more special feature of the invention, treated glass fibers and an adhesive mixture are provided for use in the manufacture of the glass fibers, where an adhesive coating on the glass fibers and additives to the cement slurry enable the glass fibers to be distributed evenly in a cement slurry and thereby regulate the rate at which water can be drawn off from this, in the manufacture of fibreglass-reinforced, cement-based products.
Det er ytteligere en hensikt med oppfinnelsen å tilveiebringe en forbedret fremgangsmåte'ved formning av fiberforsterkede sementbaserte produkter hvori glassfibere dannes med det sementholdige materiale og deretter formes til et glassfiberforsterket, sement-basert produkt. It is a further purpose of the invention to provide an improved method for forming fiber-reinforced cement-based products in which glass fibers are formed with the cement-containing material and then formed into a glass-fiber-reinforced, cement-based product.
Kjernen i foreliggende oppfinnelse ligger i oppdagelsen at glassfibere kan anvendes som forsterkning ved fremstilling av forsterkede, sementbaserte produkter når sementsystemet innbefatter, som en bestanddel av limet på glassfiberoverflåtene eller som en bestanddel av sementoppslemmingen (eller begge), et uorganisk finfordelt pul<y>erformig materiale med et høyt overflateareale i kombinasjon med polyelektrolytter. Det er uventet funnet at til-stedeværelsen av det uorganiske materiale og polyelektrolytten vil markant forøke mengden av sementpartikler og vann som holdes tilbake på glassfibrene. Det er derfor mulig å produsere, når ønsket, glassfiberforsterkede sementprodukter inneholdende så meget som 30 vekt-% glassfibere uten at dette på uheldig måte påvirker det forsterkede produkts strukturelle egenskaper. The core of the present invention lies in the discovery that glass fibers can be used as reinforcement in the production of reinforced, cement-based products when the cement system includes, as a component of the glue on the glass fiber surfaces or as a component of the cement slurry (or both), an inorganic finely divided pul<y>form material with a high surface area in combination with polyelectrolytes. It has unexpectedly been found that the presence of the inorganic material and the polyelectrolyte will markedly increase the amount of cement particles and water retained on the glass fibers. It is therefore possible to produce, when desired, glass fiber reinforced cement products containing as much as 30% by weight of glass fibers without this adversely affecting the structural properties of the reinforced product.
I en foretrukket utførelses form av foreliggende oppfinnelse limes glassfibere, som eventuelt på forhånd kan være limt, med en limblanding som inneholder som vesentlige bestanddeler det uorganiske materialet og polyelektrolytten. Glassfibrene legges ned på In a preferred embodiment of the present invention, glass fibres, which may optionally be glued in advance, are glued with an adhesive mixture which contains the inorganic material and the polyelectrolyte as essential components. The glass fibers are laid down
det porøse støtteelement sammen med sementoppslemmingen, som og-så er tilsatt det uorganiske materiale og polyelektrolytten(e). Vann fjernes deretter på konvensjonell måte ved hjelp våkum, for I å tilveiebringe en partsiel dehydratisering eller avvanning avj the porous support element together with the cement slurry, which also has the inorganic material and the polyelectrolyte(s) added to it. Water is then removed in a conventional manner using a vacuum, to provide a partial dehydration or dewatering of
glassfiber-sementblandingen, som etter herding gir et fiberforsterket sementprodukt med gode styrkeegenskaper. the glass fiber cement mixture, which after hardening gives a fibre-reinforced cement product with good strength properties.
Som uorganisk materiale anvendes fortrinnsvis et finfordelt silikatholdig materiale med liten partikkelstørrelse, fortrinnsvis i mindre enn 10fim og med et høyt spesifikt overf lateareale (dvs. et overflateareale større enn 20 m 2/g og fortrinnsvis i området 75 - 500 m 2/g. De beste resultater er erholdt med et spesielt behandlet Pentonitt kjent som Altonitt. The inorganic material used is preferably a finely divided silicate-containing material with a small particle size, preferably less than 10 µm and with a high specific surface area (i.e. a surface area greater than 20 m 2 /g and preferably in the range 75 - 500 m 2 /g. The best results are obtained with a specially treated Pentonite known as Altonite.
Gode resultater kan også erholdes med "fumed" silisiumoksyd, diatomerjord o.l. silikater. Good results can also be obtained with "fumed" silicon oxide, diatomaceous earth etc. silicates.
Betegnelsen "polyelektrolytt" innbefatter flokkuleringsmidler materialer, som er funnet å gi gode resultater er flokkulerings-midlene "Hercofloc 900" eller "Delfloc 50-V", hvilke begge er konversielt tilgjengelige. Overflateaktivemidler og fuktemidler kan anvendes sammen med polyelektrolyttene. The term "polyelectrolyte" includes flocculant materials, which have been found to give good results are the flocculants "Hercofloc 900" or "Delfloc 50-V", both of which are available convertible. Surfactants and wetting agents can be used together with the polyelectrolytes.
Den totale mengden uorganisk materiale som anvendes er ikke kritisk og kan varieres innen relativt vide grenser. De beste.resultater oppnås vanligvis når det uorganiske materiale utgjør 5-50 vekt-% regnet på vekten av den anvendte sement, fortrinnsvis 10-25 vekt-%. På samme måte kan mengden av polyelektrolytt varieres, vanligvis innen området 0,01 - 1 vekt-%, regnet på vekten av den anvendte sement. The total amount of inorganic material used is not critical and can be varied within relatively wide limits. The best results are usually obtained when the inorganic material constitutes 5-50% by weight based on the weight of the cement used, preferably 10-25% by weight. In the same way, the amount of polyelectrolyte can be varied, usually within the range of 0.01 - 1% by weight, calculated on the weight of the cement used.
I en foretrukket utførelsesform er det uorganiske materialet tilstede i et lim påført glassfibrene, limblandingen er slik sammen-satt at den på tørrstoffbasis innbefatter 10 - 75 % uorganisk materiale og 1 - 25 vekt-% polyelektrolytt. Det er noen ganger foretrukket å formulere limet med filmdannere som er forenlige med polyelektrolytten. Egnede filmdannere er stivelse og/eller vinylharpikser. En egnet vinylharpiks som gir gode resultater er polyvinylalkohol så som "Mowiol 4.88" (Hoechst AG, Tyskland). In a preferred embodiment, the inorganic material is present in an adhesive applied to the glass fibres, the adhesive mixture is such that it contains, on a dry matter basis, 10-75% inorganic material and 1-25% by weight polyelectrolyte. It is sometimes preferred to formulate the adhesive with film formers compatible with the polyelectrolyte. Suitable film formers are starch and/or vinyl resins. A suitable vinyl resin that gives good results is polyvinyl alcohol such as "Mowiol 4.88" (Hoechst AG, Germany).
I tillegg kan limet formuleres til å innbefatte konvensjonelle tilsetningsmidler så som glassfibersmøremiddeler, fuktemidler In addition, the adhesive can be formulated to include conventional additives such as fiberglass lubricants, wetting agents
etc. Egnede smøremidler innbefatter "Sodamin" eller "Emerlubejetc. Suitable lubricants include "Sodamin" or "Emerlubej
I IN
7484". Mengden av den filmdannende bestanddel utgjør som regel<I>5-35 vekt-% og smøremiddelet 1-15 vekt-% regnet på limets tørrstoffinnhold. Limet påføres glassfibrene i en mengde tilsvarende et tørrstoffinnhold på 0,1 - 2 5 vekt-%, regnet på glassfibrene. Hvis fibrene anvendes uten tilsetningsmidler til sementoppslemningen vil tørrstoffinnholdet av limet på glassfibrene være i området 5-200 vekt-% eller mere regnet på glassvekten. 7484". The amount of the film-forming component is usually 5-35% by weight and the lubricant 1-15% by weight, based on the dry matter content of the glue. The glue is applied to the glass fibers in an amount corresponding to a dry matter content of 0.1 - 25% by weight -%, calculated on the glass fibers If the fibers are used without additives for the cement slurry, the dry matter content of the glue on the glass fibers will be in the range of 5-200% by weight or more calculated on the glass weight.
Ved påføring av limet på glassfibrene ;kan det anvendes forskjellige kjente teknikker. F.eks. kan glassfibrene føres i kontakt med en valse fuktet med limblandingen. Alternativt kan limblandingen sprøytes på glassfibrene. De anvendte glassfibere ved ut-øvelse av foreliggende oppfinnelse kan være "E" glassfibere, som er velkjente for en fagmann og slike fibere er beskrevet i US-patent nr. 2.334.961. Foretrukne glassfibere ved utøvelse av foreliggende oppfinnelse er imidlertid alkaliresistente glassfibere. Slike glassfibere er velkjent og er bl.a. beskrevet•i US-patentene nr. 3.840.379, 3.861.927 og 3.861.926. When applying the glue to the glass fibres, various known techniques can be used. E.g. the glass fibers can be brought into contact with a roller moistened with the adhesive mixture. Alternatively, the adhesive mixture can be sprayed onto the glass fibres. The glass fibers used in the practice of the present invention can be "E" glass fibers, which are well known to a person skilled in the art and such fibers are described in US patent no. 2,334,961. However, preferred glass fibers in the practice of the present invention are alkali-resistant glass fibers. Such glass fibers are well known and are i.a. described•in US Patent Nos. 3,840,379, 3,861,927 and 3,861,926.
Ved kombinering av glassfibrene,behandlet i henhold til foreliggende oppfinnelse med det sementholdige materialet så kan man anvende en hvilken som helst av et antall sementer av den type som anvendes innen teknikkens stand. Egnede sementholdige materialer innbefattende sement, Portland sement, betong, mørtel, gips, hydratisert kalsiumsilikat etc. De behandlede glassfibre, generelt i en mengde på 1 - 25 vekt-%, regnet på vekten av sementen blandes med sementoppslemmingen, enten med eller uten tilsetning av andre fibere så som asbestfibere. Når slike andre fibere anvendes er det vanligvis tilstede i en mengde på 1 - 10 vekt-% regnet på vekten av det sementholdige materiale. Massen som erholdes ved blanding av fibere og det sementholdige materiale plasseres i kontakt med det porøse formningselement i henhold til den velkjente Hatschek- eller Magniani-prosessen og formnings-elementet settes under våkum for å fjerne vann fra det fiberforsterkede sementbaserte produkt, som deretter herdes i henhold til velkjent teknikk. Det erholdte fiberforsterkede sementbaserte produkt er særpreget ved høy styrke og kan anvendes som bygningsmateriale i henhold tii velkjente prinsipper innen teknikkens stand. De etterfølgende eksempler illustrerer When combining the glass fibres, treated according to the present invention, with the cementitious material, any one of a number of cements of the type used within the state of the art can be used. Suitable cementitious materials include cement, Portland cement, concrete, mortar, gypsum, hydrated calcium silicate, etc. The treated glass fibers, generally in an amount of 1 - 25% by weight, based on the weight of the cement, are mixed with the cement slurry, either with or without the addition of other fibers such as asbestos fibers. When such other fibers are used, they are usually present in an amount of 1 - 10% by weight based on the weight of the cementitious material. The mass obtained by mixing the fibers and the cementitious material is placed in contact with the porous forming element according to the well-known Hatschek or Magniani process and the forming element is placed under vacuum to remove water from the fiber-reinforced cement-based product, which is then cured in according to well-known techniques. The fiber-reinforced cement-based product obtained is characterized by high strength and can be used as a building material in accordance with ten well-known principles within the state of the art. The following examples illustrate
i oppfinnelsen. in the invention.
Eksempel 1Example 1
Dette eksempel viser fremstilling og anvendelse av en limblanding. This example shows the preparation and use of an adhesive mixture.
En limblanding fremstilles av de følgende bestanddeler: An adhesive mixture is made from the following components:
De ovenfornevnte bestanddeler blandes med vann til å gi en suspensjon inneholdende 2,5 vekt-% tørrstoff. The above-mentioned ingredients are mixed with water to give a suspension containing 2.5% by weight of dry matter.
Limblandingen påføres glassfibere ved valsebelegning. De erholdte fibere belagt med limblandingen har et gel-lignende belegg på sin overflate og belegger utviser god addesjon til glassfiberoverflåtene. The adhesive mixture is applied to glass fibers by roller coating. The obtained fibers coated with the adhesive mixture have a gel-like coating on their surface and the coating exhibits good adhesion to the glass fiber surfaces.
Eksempel 2Example 2
Dette eksempel viser anvendelse av glassfibere behandlet i henhold til oppfinnelsen ved fremstilling av glassfiberforsterkede sementbaserte rør eller plater. This example shows the use of glass fibers treated according to the invention in the production of glass fiber-reinforced cement-based pipes or plates.
Glassfibrene behandlet i henhold til eksempel 1 blandes med en sementblanding med den følgende sammensetning: The glass fibers treated according to example 1 are mixed with a cement mixture with the following composition:
I Glassfibrene, kuttet til en lengde på 3 - 76 mm," anvendes i en mengde tilsvarende ca. 10 vekt-% regnet på vekten av sementen. Den erholdte masse behandles på kjent måte i en Hatschek-maskin til å gi fiberforsterkede sementrør eller ark med gode styrkeegenskaper. Dette kan innbefatte anvendelse av ytteligere polyelektorlytter. In the Glass fibers, cut to a length of 3 - 76 mm," is used in an amount corresponding to about 10% by weight calculated on the weight of the cement. The mass obtained is processed in a known manner in a Hatschek machine to give fiber-reinforced cement pipes or sheets with good strength properties This may include the use of additional polyelectrolytes.
Selv om det i den foregående beskrivelse er omtalt anvendelse av Although the previous description mentions the use of
glassfibere for forsterkning så vil det forstås at trekket ved den foreliggende oppfinnelse kan anvendes på andre typer fibere innbefattende naturlige og syntetiske organisk og uorganiske fibere, så som ull, "dacron", nylon, polyesterfibere, metallfibere etc. glass fibers for reinforcement then it will be understood that the feature of the present invention can be applied to other types of fibers including natural and synthetic organic and inorganic fibers, such as wool, "dacron", nylon, polyester fibers, metal fibers etc.
Oppfinnelsen muliggjør også anvendelse av mineralfibere særlig glassfibere i papirfremstillingssystemer og ved våtfremstilling av plater og mattesystemer ved å forbedre bearbeidbarhetsegen-skapene for slike uorganiske fibere. The invention also enables the use of mineral fibres, particularly glass fibers, in paper production systems and in the wet production of boards and mat systems by improving the workability properties of such inorganic fibres.
Claims (13)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US95314278A | 1978-10-25 | 1978-10-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO790227L true NO790227L (en) | 1980-04-28 |
Family
ID=25493632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO790227A NO790227L (en) | 1978-10-25 | 1979-01-23 | FIBER REINFORCED PRODUCT, AND PROCEDURE FOR PRODUCING IT. |
Country Status (17)
Country | Link |
---|---|
JP (1) | JPS5560049A (en) |
AU (1) | AU527167B2 (en) |
BE (1) | BE872304A (en) |
BR (1) | BR7900611A (en) |
CA (1) | CA1139793A (en) |
DE (1) | DE2850868A1 (en) |
DK (1) | DK28879A (en) |
FI (1) | FI790213A (en) |
FR (1) | FR2439758A1 (en) |
GB (1) | GB2035286B (en) |
GR (1) | GR68707B (en) |
IT (1) | IT1101711B (en) |
NL (1) | NL7902295A (en) |
NO (1) | NO790227L (en) |
NZ (1) | NZ189481A (en) |
SE (1) | SE7900541L (en) |
ZA (1) | ZA79390B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK151378C (en) * | 1978-11-03 | 1988-05-16 | Aalborg Portland Cement | SHAPED ARTICLES AND COMPOSITION MATERIALS AND PROCEDURES FOR PRODUCING SAME |
WO1981000252A1 (en) * | 1979-07-13 | 1981-02-05 | Aalborg Portland Cement | Fiber-reinforced composite materials and shaped articles |
CH645605A5 (en) * | 1980-02-22 | 1984-10-15 | Ametex Ag | METHOD FOR PRODUCING A FIBER REINFORCED, HYDRAULICALLY BINDING COMPOSITION, THE COMPOSITION AND USE THEREOF PRODUCED BY THIS METHOD. |
NO860083L (en) * | 1985-01-29 | 1986-07-30 | Elkem As | Reinforcing fibers treated with silica dust. |
GB8706782D0 (en) * | 1987-03-21 | 1987-04-23 | Velmac Scotland Ltd | Plant restrictor |
WO2007090209A1 (en) * | 2006-02-07 | 2007-08-16 | Ilf Beratende Ingenieure Zt Gesellschaft Mbh | Composite pipe containing fibre-reinforced concrete |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1402555A (en) * | 1971-08-05 | 1975-08-13 | Nat Res Dev | Fibre reinforced cement composites |
JPS52103418A (en) * | 1976-02-27 | 1977-08-30 | Asahi Glass Co Ltd | Composite of fiber glass reinforced cement |
FR2358368A1 (en) * | 1976-07-13 | 1978-02-10 | Bretagne Ste Metallurg | IMPROVEMENTS TO CLAY-CEMENT MORTARS, THEIR PREPARATION AND IMPLEMENTATION PROCESSES AND THE PRODUCTS OBTAINED USING THESE MORTARS |
JPS5317632A (en) * | 1976-07-31 | 1978-02-17 | Matsushita Electric Works Ltd | Method of manufacturing hardened cement products |
-
1978
- 1978-11-13 GR GR57642A patent/GR68707B/el unknown
- 1978-11-16 IT IT29874/78A patent/IT1101711B/en active
- 1978-11-21 GB GB7845467A patent/GB2035286B/en not_active Expired
- 1978-11-23 FR FR7833117A patent/FR2439758A1/en not_active Withdrawn
- 1978-11-24 DE DE19782850868 patent/DE2850868A1/en not_active Withdrawn
- 1978-11-27 BE BE191956A patent/BE872304A/en unknown
-
1979
- 1979-01-22 SE SE7900541A patent/SE7900541L/en not_active Application Discontinuation
- 1979-01-23 FI FI790213A patent/FI790213A/en unknown
- 1979-01-23 NO NO790227A patent/NO790227L/en unknown
- 1979-01-23 DK DK28879A patent/DK28879A/en not_active Application Discontinuation
- 1979-01-25 NZ NZ189481A patent/NZ189481A/en unknown
- 1979-01-30 ZA ZA79390A patent/ZA79390B/en unknown
- 1979-01-30 JP JP962179A patent/JPS5560049A/en active Pending
- 1979-02-01 AU AU43855/79A patent/AU527167B2/en not_active Withdrawn - After Issue
- 1979-02-01 BR BR7900611A patent/BR7900611A/en unknown
- 1979-03-02 CA CA000322659A patent/CA1139793A/en not_active Expired
- 1979-03-23 NL NL7902295A patent/NL7902295A/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU527167B2 (en) | 1983-02-17 |
SE7900541L (en) | 1980-04-26 |
GR68707B (en) | 1982-02-02 |
JPS5560049A (en) | 1980-05-06 |
FR2439758A1 (en) | 1980-05-23 |
CA1139793A (en) | 1983-01-18 |
DE2850868A1 (en) | 1980-05-08 |
NZ189481A (en) | 1981-10-19 |
GB2035286B (en) | 1983-01-19 |
ZA79390B (en) | 1980-09-24 |
FI790213A (en) | 1980-04-26 |
IT1101711B (en) | 1985-10-07 |
DK28879A (en) | 1980-04-26 |
IT7829874A0 (en) | 1978-11-16 |
BR7900611A (en) | 1980-06-03 |
BE872304A (en) | 1979-05-28 |
GB2035286A (en) | 1980-06-18 |
AU4385579A (en) | 1980-05-01 |
NL7902295A (en) | 1980-04-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4289536A (en) | Glass fiber reinforced cements and process for manufacture of same | |
US6875503B1 (en) | Cementitious product in panel form and manufacturing process | |
US8088217B2 (en) | Cement-based fire door core | |
SK241092A3 (en) | Formed resistant product reinforced by fibrous | |
JP4454847B2 (en) | Shaped fibers-cement products and reinforcing fibers for such products | |
CN108530009A (en) | A kind of inner wall of building lightweight plastering gupsum | |
GB2148871A (en) | Sheet material of fibre-reinforced cement | |
NZ546876A (en) | Fibers reinforced cement sheet product and production method thereof | |
Singh et al. | Glass fibre reinforced water-resistant gypsum-based composites | |
NO790227L (en) | FIBER REINFORCED PRODUCT, AND PROCEDURE FOR PRODUCING IT. | |
US4293343A (en) | Mortars and cements having improved freeze-thaw properties and method of achieving same | |
CN106242433A (en) | A kind of water conservation anticracking grout for air-entrained concrete building block surface | |
PT1044939E (en) | Shaped fibrous cement products and reinforcement fibers for such products and method for treating such fibers | |
US4179303A (en) | Method of producing structural insulation materials containing at least 50 percent xonotlite | |
Thomas et al. | Wastepaper fibers in cementitious composites | |
NO327652B1 (en) | Process for processing a concrete containing an open-pore lightweight additive and use of a coated, open-pore lightweight additive | |
CN113845351A (en) | Colored permeable pavement material and preparation process thereof | |
GB2048330A (en) | Method of preparing a fibre- reinforced cementitious plate | |
Xu et al. | An ideal structural model for very low porosity cementitious systems | |
CN110194637B (en) | Fiber reinforced plate and preparation method thereof | |
CA1252125A (en) | Method of producing structural panels | |
JPS6219387B2 (en) | ||
EP0021781A2 (en) | Water-settable compositions, shaped article made thereof and process for the production of such an article | |
JP2001213676A (en) | Method of manufacturing light weight inorganic board | |
AU2004277443B2 (en) | Cement sheet product and production method thereof |