Development of the “Kutech programme” (Q3929731): Difference between revisions
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The components, implementation process and effects of the Kutech model: In the first round, we would like to choose a variety of synthetic fibres, regardless of brand, according to our own and previous experiences. Synthetic fibers have a serious historical background, and the idea of fiber reinforced materials itself has millennia. The Egyptians mixed straw and animal hairs with clay to improve its toughness and durability. Since the beginning of the 20th century, the introduction of concrete reinforced with asbestos fibres or modified with synthetic fibres from the 1960s has begun to apply the correct recognition of people from the old age, and we are already aware that fibre reinforced composites are the most modern family of structural materials for technical purposes. The role of the thread in the construction sector is multifaceted and growing. It can be used as an additive to concrete, in plastic composites, as a concrete reinforcement and as an independent structural material, or in special fabric structures. The asbestos fibre started with great success at the beginning of the last century, but its use was later banned for health reasons. In the construction of heavy mass use of steel fibers, then synthetic fibres were found. The latter have been successful because their properties can be adjusted within a wide range of requirements, thanks to the targeted selection of polymers, the modification of the raw material with additives and the fibre forming process. In the construction industry so far, cheap conventional fibres (PP and PAN fibres) or their modified types have been successful. The use of polymer matrix composites is today the most common of all composites. The matrix can be either thermosetting or thermoplastic polymer. One of the most important factors determining the properties of the fibre-reinforced composites is the matrix and the adhesion of the fibre (The desired fibre matrix adhesion is usually achieved by joining the two components and by forming a covalent bond), so knowledge and possible modification of this is essential for the production of the structural material with the desired properties. In the absence of proper interaction, the fibre cannot absorb the load transmitted by the matrix and the composite cannot fulfil its function. First of all, we would like to examine the examination of the fibre itself and the relationship between concrete and fibre in the framework of the research and development project. The demands for the ideal fibre reinforcement material are similar to those of concrete steel. Basic need for relatively high tensile strength and toughness. The fibres need to be incorporated into the concrete and therefore the following requirements can be imposed: — chemically stable in the cement medium, — spread evenly in the concrete, — stick well in the concrete, — it can be well-worked, — pumped, — and the surface can be smoothed, — do not get too many fibres on the surface, — the effect is at least approximate, scalable, — do not weaken the other properties of the concrete. Man-made fibres are manufactured in different thicknesses and lengths depending on the thickness and grain size of the concrete layer. It is important to apply only so-called stretched strands to reinforcement, because otherwise the strengthening effect is not. The stretched strands are not fully crystalline, so their stretching effect decreases over time. Unlike other materials used to date in the construction industry, man-made fibres are not corroded, and the parts that leave the concrete can be scorched. The dimensions of man-made fibres are characterised by fibre fineness and length. Their delicacy is usually 2-50 Denier (1 Denier: 9 000 m long fibre mass in grams), usually 10-50 mm in length. In some cases, the bundles of fibres are joined together in some form. With synthetic fibres meeting the above criteria, the determination of the equivalent tensile bending strength is carried out as a second step. For model design we need a sufficient number of tests (3x6 series per fibre type), the course and theoretical determination of this test is an important task. The tensile-bending strength is not a constant characteristic of a material, but a boundary condition taken on the basis of experiments. This Directive provides for a leg test, which corresponds to practical uses and a relatively simple test procedure. A test sample measuring 150 mm x 150 mm x 500-700 mm shall be used for the test. The impactor is prepared by cementing into a prepared template. At least 6 specimens must be made for each series. For fibre lengths of more than 60 mm, although other impactor dimensions will be used. After preparation, the following conditions shall apply to the storage of the specimens: vibration-proof, airtight cover, storage at 20 ± 2 °C for 24 hours until formworking. If there is no particular requirement, storage shall be carried out in a water bath until examination. 3 hours before the ... (English) | |||||||||||||||
| Property / summary: The components, implementation process and effects of the Kutech model: In the first round, we would like to choose a variety of synthetic fibres, regardless of brand, according to our own and previous experiences. Synthetic fibers have a serious historical background, and the idea of fiber reinforced materials itself has millennia. The Egyptians mixed straw and animal hairs with clay to improve its toughness and durability. Since the beginning of the 20th century, the introduction of concrete reinforced with asbestos fibres or modified with synthetic fibres from the 1960s has begun to apply the correct recognition of people from the old age, and we are already aware that fibre reinforced composites are the most modern family of structural materials for technical purposes. The role of the thread in the construction sector is multifaceted and growing. It can be used as an additive to concrete, in plastic composites, as a concrete reinforcement and as an independent structural material, or in special fabric structures. The asbestos fibre started with great success at the beginning of the last century, but its use was later banned for health reasons. In the construction of heavy mass use of steel fibers, then synthetic fibres were found. The latter have been successful because their properties can be adjusted within a wide range of requirements, thanks to the targeted selection of polymers, the modification of the raw material with additives and the fibre forming process. In the construction industry so far, cheap conventional fibres (PP and PAN fibres) or their modified types have been successful. The use of polymer matrix composites is today the most common of all composites. The matrix can be either thermosetting or thermoplastic polymer. One of the most important factors determining the properties of the fibre-reinforced composites is the matrix and the adhesion of the fibre (The desired fibre matrix adhesion is usually achieved by joining the two components and by forming a covalent bond), so knowledge and possible modification of this is essential for the production of the structural material with the desired properties. In the absence of proper interaction, the fibre cannot absorb the load transmitted by the matrix and the composite cannot fulfil its function. First of all, we would like to examine the examination of the fibre itself and the relationship between concrete and fibre in the framework of the research and development project. The demands for the ideal fibre reinforcement material are similar to those of concrete steel. Basic need for relatively high tensile strength and toughness. The fibres need to be incorporated into the concrete and therefore the following requirements can be imposed: — chemically stable in the cement medium, — spread evenly in the concrete, — stick well in the concrete, — it can be well-worked, — pumped, — and the surface can be smoothed, — do not get too many fibres on the surface, — the effect is at least approximate, scalable, — do not weaken the other properties of the concrete. Man-made fibres are manufactured in different thicknesses and lengths depending on the thickness and grain size of the concrete layer. It is important to apply only so-called stretched strands to reinforcement, because otherwise the strengthening effect is not. The stretched strands are not fully crystalline, so their stretching effect decreases over time. Unlike other materials used to date in the construction industry, man-made fibres are not corroded, and the parts that leave the concrete can be scorched. The dimensions of man-made fibres are characterised by fibre fineness and length. Their delicacy is usually 2-50 Denier (1 Denier: 9 000 m long fibre mass in grams), usually 10-50 mm in length. In some cases, the bundles of fibres are joined together in some form. With synthetic fibres meeting the above criteria, the determination of the equivalent tensile bending strength is carried out as a second step. For model design we need a sufficient number of tests (3x6 series per fibre type), the course and theoretical determination of this test is an important task. The tensile-bending strength is not a constant characteristic of a material, but a boundary condition taken on the basis of experiments. This Directive provides for a leg test, which corresponds to practical uses and a relatively simple test procedure. A test sample measuring 150 mm x 150 mm x 500-700 mm shall be used for the test. The impactor is prepared by cementing into a prepared template. At least 6 specimens must be made for each series. For fibre lengths of more than 60 mm, although other impactor dimensions will be used. After preparation, the following conditions shall apply to the storage of the specimens: vibration-proof, airtight cover, storage at 20 ± 2 °C for 24 hours until formworking. If there is no particular requirement, storage shall be carried out in a water bath until examination. 3 hours before the ... (English) / rank | |||||||||||||||
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| Property / summary: The components, implementation process and effects of the Kutech model: In the first round, we would like to choose a variety of synthetic fibres, regardless of brand, according to our own and previous experiences. Synthetic fibers have a serious historical background, and the idea of fiber reinforced materials itself has millennia. The Egyptians mixed straw and animal hairs with clay to improve its toughness and durability. Since the beginning of the 20th century, the introduction of concrete reinforced with asbestos fibres or modified with synthetic fibres from the 1960s has begun to apply the correct recognition of people from the old age, and we are already aware that fibre reinforced composites are the most modern family of structural materials for technical purposes. The role of the thread in the construction sector is multifaceted and growing. It can be used as an additive to concrete, in plastic composites, as a concrete reinforcement and as an independent structural material, or in special fabric structures. The asbestos fibre started with great success at the beginning of the last century, but its use was later banned for health reasons. In the construction of heavy mass use of steel fibers, then synthetic fibres were found. The latter have been successful because their properties can be adjusted within a wide range of requirements, thanks to the targeted selection of polymers, the modification of the raw material with additives and the fibre forming process. In the construction industry so far, cheap conventional fibres (PP and PAN fibres) or their modified types have been successful. The use of polymer matrix composites is today the most common of all composites. The matrix can be either thermosetting or thermoplastic polymer. One of the most important factors determining the properties of the fibre-reinforced composites is the matrix and the adhesion of the fibre (The desired fibre matrix adhesion is usually achieved by joining the two components and by forming a covalent bond), so knowledge and possible modification of this is essential for the production of the structural material with the desired properties. In the absence of proper interaction, the fibre cannot absorb the load transmitted by the matrix and the composite cannot fulfil its function. First of all, we would like to examine the examination of the fibre itself and the relationship between concrete and fibre in the framework of the research and development project. The demands for the ideal fibre reinforcement material are similar to those of concrete steel. Basic need for relatively high tensile strength and toughness. The fibres need to be incorporated into the concrete and therefore the following requirements can be imposed: — chemically stable in the cement medium, — spread evenly in the concrete, — stick well in the concrete, — it can be well-worked, — pumped, — and the surface can be smoothed, — do not get too many fibres on the surface, — the effect is at least approximate, scalable, — do not weaken the other properties of the concrete. Man-made fibres are manufactured in different thicknesses and lengths depending on the thickness and grain size of the concrete layer. It is important to apply only so-called stretched strands to reinforcement, because otherwise the strengthening effect is not. The stretched strands are not fully crystalline, so their stretching effect decreases over time. Unlike other materials used to date in the construction industry, man-made fibres are not corroded, and the parts that leave the concrete can be scorched. The dimensions of man-made fibres are characterised by fibre fineness and length. Their delicacy is usually 2-50 Denier (1 Denier: 9 000 m long fibre mass in grams), usually 10-50 mm in length. In some cases, the bundles of fibres are joined together in some form. With synthetic fibres meeting the above criteria, the determination of the equivalent tensile bending strength is carried out as a second step. For model design we need a sufficient number of tests (3x6 series per fibre type), the course and theoretical determination of this test is an important task. The tensile-bending strength is not a constant characteristic of a material, but a boundary condition taken on the basis of experiments. This Directive provides for a leg test, which corresponds to practical uses and a relatively simple test procedure. A test sample measuring 150 mm x 150 mm x 500-700 mm shall be used for the test. The impactor is prepared by cementing into a prepared template. At least 6 specimens must be made for each series. For fibre lengths of more than 60 mm, although other impactor dimensions will be used. After preparation, the following conditions shall apply to the storage of the specimens: vibration-proof, airtight cover, storage at 20 ± 2 °C for 24 hours until formworking. If there is no particular requirement, storage shall be carried out in a water bath until examination. 3 hours before the ... (English) / qualifier | |||||||||||||||
point in time: 8 February 2022
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Revision as of 21:12, 8 February 2022
Project Q3929731 in Hungary
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Development of the “Kutech programme” |
Project Q3929731 in Hungary |
Statements
20,052,330 forint
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32,885,071.42 forint
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60.977188 percent
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1 May 2018
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31 December 2018
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Fiber Technology Korlátolt Felelősségű Társaság
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47°43'18.84"N, 18°38'53.56"E
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A KUTECH modell összetevői, megvalósítási folyamata és hatásai: Első körben mindenképpen saját és korábbi más tapasztalatoknak megfelelően márkától függetlenül szeretnénk többféle szintetikus szálat kiválasztani. A szintetikus szálaknak komoly történelmi háttere van, maga a szálerősítésű anyagok ötlete évezredekre tekint vissza. Az egyiptomiak szalmát és állati eredetű szőrszálakat kevertek az agyaghoz, hogy annak szívósságát és tartósságát javítsák. XX. század elejétől az azbesztszállal erősített, vagy a ’60-as évektől a szintetikus szálakkal módosított betonok bevezetésével a régi korok embereinek ma is helytálló felismerését kezdték alkalmazni, és már ott tartunk, hogy a szálerősítéses kompozitok képezik a műszaki célú szerkezeti anyagok legkorszerűbb családját. A szál szerepe az építőiparban sokrétű és egyre nagyobb teret hódít. Felhasználásra kerülhet adalékként a betonhoz, műanyag kompozitban betonerősítőként és önálló szerkezeti anyagként, vagy speciális szövetszerkezetekben. Az azbesztszál nagy sikerrel indult a múlt század elején, de használatát később egészségügyi okokból betiltottak. Az építőiparban a nagy tömegű felhasználásra az acélszálak, majd a szintetikus szálak találtak. Ez utóbbiak azért lettek sikeresek, mert tulajdonságaik igen széles határok között, a kívánalmaknak megfelelően állíthatók be a polimer célirányos kiválasztásának, az alapanyag adalékokkal történő módosításának és a szálképzési eljárásnak köszönhetően. Az építőiparban eddig elsősorban a nagy pH értéknek ellenálló, olcsó hagyományos szálak (PP és PAN szálak), vagy azok módosított típusai arattak sikert. A polimer mátrixú kompozitok használata napjainkban valamennyi kompozitféleség közül a legelterjedtebb. A mátrix lehet hőre keményedő vagy hőre lágyuló polimer egyaránt. A szálerősítésű kompozitok tulajdonságait meghatározó egyik legfontosabb tényező a mátrix és a szál adhéziója (A kívánt szál-mátrix adhéziót általában a két komponens összekapcsolásával, kovalens kötés kialakításával érik el), így ennek az ismerete és esetleges módosítása elengedhetetlen a kívánt tulajdonságú szerkezeti anyag előállításához. Megfelelő kölcsönhatás hiányában ugyanis a szál nem képes felvenni a mátrix által közvetített terhelést és a kompozit nem tudja betölteni a funkcióját. Elsőként magát a szál vizsgálatát, valamint a beton és a szál közötti kapcsolatot szeretnénk a kutatás-fejlesztési projekt keretében vizsgálni. Az ideális szálerősítés anyagával szemben támasztott igények hasonlóak a betonacéléhoz. Alapvető igény a viszonylag nagy húzószilárdság és szívósság. A szálakat a betonba szükséges belekeverni, ezért az alábbi követelmények támaszthatók: - kémiailag stabil legyen a cementes közegben, - a betonban egyenletesen oszoljon el, - jól tapadjon a betonban, - az építéshelyeken jól bedolgozható, - szivattyúzható, - és a felület jól simítható legyen, - ne kerüljön túl sok szál a felületre, - hatása legalább közelítőleg számítható, méretezhető legyen, - a beton egyéb tulajdonságait ne gyengítse le. A műszálakat különböző vastagságban és hosszban gyártják a betonréteg vastagsága és szemnagysága függvényében. Fontos, hogy csak úgynevezett nyújtott szálakat alkalmazzanak az erősítésre, mert egyébként az erősítő hatás elmarad. A nyújtott szálak sem teljesen kristályosak, így a feszítő hatásuk az idővel csökken. Más, az építőiparban eddig használt anyagokkal ellentétben a műszálak nem korrodálódnak, a betonból kilogó részek leperzselhetők. A műszálak méreteit a szálfinomsággal és a hosszal jellemzik. Finomságuk általában 2-50 Denier (1 Denier: 9000 méter hosszú szál tömeget jelenti grammban), hosszuk általában 10-50 mm. Néhány esetben a szálkötegeket valamilyen alakzatba fogják össze. A fenti kritériumoknak megfelelő szintetikus szálakkal második lépésként elvégezzük az ekvivalens húzó-hajlító szilárdság meghatározását. A modell kialakításhoz kellő számú vizsgálatra van szükségünk (száltípusonként 3x6 sorozat), ennek a vizsgálatnak a menete és elméleti meghatározása fontos feladat. A húzó-hajlító szilárdság nem egy anyagra jellemző állandó, hanem a kísérletek alapján felvett peremfeltétel. Ez az irányelv a hasábbal történő vizsgálatot írja elő, amely a gyakorlati igénybevételeknek és a relatíve egyszerű vizsgálati eljárásnak megfelel. A vizsgálatkor 150 mm x 150 mm x 500-700 mm méretű vizsgálati próbatestet szükséges alkalmazni. A próbatest előkészített sablonba történő betonozással készül. Minden szériához legalább 6 db próbatestet szükséges készíteni. 60 mm feletti szálhosszúsághoz, pedig más próbatest méretet fogunk alkalmazni. Az elkészítés után a próbatestek tárolására a következő feltételek vonatkoznak: rázkódásmentes, légzáró takarás, 24 órán át kizsaluzásig 20 ± 2 °C-on való tárolás. Ha nincs különösebb követelmény, a tárolás a vizsgálatig vizes fürdőben történik. A vizsgálat előtt 3 órával a próbatesteket a vízfürdőből kivesszük, és sűrített levegővel lefújjuk. A vizsgálat megegyezett időpontban, általában 28 nap után történik. A v (Hungarian)
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The components, implementation process and effects of the Kutech model: In the first round, we would like to choose a variety of synthetic fibres, regardless of brand, according to our own and previous experiences. Synthetic fibers have a serious historical background, and the idea of fiber reinforced materials itself has millennia. The Egyptians mixed straw and animal hairs with clay to improve its toughness and durability. Since the beginning of the 20th century, the introduction of concrete reinforced with asbestos fibres or modified with synthetic fibres from the 1960s has begun to apply the correct recognition of people from the old age, and we are already aware that fibre reinforced composites are the most modern family of structural materials for technical purposes. The role of the thread in the construction sector is multifaceted and growing. It can be used as an additive to concrete, in plastic composites, as a concrete reinforcement and as an independent structural material, or in special fabric structures. The asbestos fibre started with great success at the beginning of the last century, but its use was later banned for health reasons. In the construction of heavy mass use of steel fibers, then synthetic fibres were found. The latter have been successful because their properties can be adjusted within a wide range of requirements, thanks to the targeted selection of polymers, the modification of the raw material with additives and the fibre forming process. In the construction industry so far, cheap conventional fibres (PP and PAN fibres) or their modified types have been successful. The use of polymer matrix composites is today the most common of all composites. The matrix can be either thermosetting or thermoplastic polymer. One of the most important factors determining the properties of the fibre-reinforced composites is the matrix and the adhesion of the fibre (The desired fibre matrix adhesion is usually achieved by joining the two components and by forming a covalent bond), so knowledge and possible modification of this is essential for the production of the structural material with the desired properties. In the absence of proper interaction, the fibre cannot absorb the load transmitted by the matrix and the composite cannot fulfil its function. First of all, we would like to examine the examination of the fibre itself and the relationship between concrete and fibre in the framework of the research and development project. The demands for the ideal fibre reinforcement material are similar to those of concrete steel. Basic need for relatively high tensile strength and toughness. The fibres need to be incorporated into the concrete and therefore the following requirements can be imposed: — chemically stable in the cement medium, — spread evenly in the concrete, — stick well in the concrete, — it can be well-worked, — pumped, — and the surface can be smoothed, — do not get too many fibres on the surface, — the effect is at least approximate, scalable, — do not weaken the other properties of the concrete. Man-made fibres are manufactured in different thicknesses and lengths depending on the thickness and grain size of the concrete layer. It is important to apply only so-called stretched strands to reinforcement, because otherwise the strengthening effect is not. The stretched strands are not fully crystalline, so their stretching effect decreases over time. Unlike other materials used to date in the construction industry, man-made fibres are not corroded, and the parts that leave the concrete can be scorched. The dimensions of man-made fibres are characterised by fibre fineness and length. Their delicacy is usually 2-50 Denier (1 Denier: 9 000 m long fibre mass in grams), usually 10-50 mm in length. In some cases, the bundles of fibres are joined together in some form. With synthetic fibres meeting the above criteria, the determination of the equivalent tensile bending strength is carried out as a second step. For model design we need a sufficient number of tests (3x6 series per fibre type), the course and theoretical determination of this test is an important task. The tensile-bending strength is not a constant characteristic of a material, but a boundary condition taken on the basis of experiments. This Directive provides for a leg test, which corresponds to practical uses and a relatively simple test procedure. A test sample measuring 150 mm x 150 mm x 500-700 mm shall be used for the test. The impactor is prepared by cementing into a prepared template. At least 6 specimens must be made for each series. For fibre lengths of more than 60 mm, although other impactor dimensions will be used. After preparation, the following conditions shall apply to the storage of the specimens: vibration-proof, airtight cover, storage at 20 ± 2 °C for 24 hours until formworking. If there is no particular requirement, storage shall be carried out in a water bath until examination. 3 hours before the ... (English)
8 February 2022
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Tokod, Komárom-Esztergom
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Identifiers
GINOP-2.1.7-15-2016-00820
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