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WO2014094692A1 - Ultra-high strength steel fibre reinforced concrete - Google Patents

Ultra-high strength steel fibre reinforced concrete Download PDF

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Publication number
WO2014094692A1
WO2014094692A1 PCT/CZ2013/000161 CZ2013000161W WO2014094692A1 WO 2014094692 A1 WO2014094692 A1 WO 2014094692A1 CZ 2013000161 W CZ2013000161 W CZ 2013000161W WO 2014094692 A1 WO2014094692 A1 WO 2014094692A1
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WIPO (PCT)
Prior art keywords
fibres
steel
fibre reinforced
reinforced concrete
type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CZ2013/000161
Other languages
French (fr)
Other versions
WO2014094692A4 (en
Inventor
Josef FLÁDR
Jan VODIČKA
Alena KOHOUTKOVÁ
Iva BROUKALOVÁ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Czech Technical University In Prague
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Czech Technical University In Prague
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Czech Technical University In Prague filed Critical Czech Technical University In Prague
Priority to SK50010-2015A priority Critical patent/SK288599B6/en
Priority to DE112013006042.6T priority patent/DE112013006042T5/en
Publication of WO2014094692A1 publication Critical patent/WO2014094692A1/en
Publication of WO2014094692A4 publication Critical patent/WO2014094692A4/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]

Definitions

  • the total dose of basalt aggregate is in the range of 1500 to 2000 kg/m 3 and ratio of sieve sizes is determined by granulometry and mineralogical composition of particular source of basalt aggregate.
  • the first type of fibres has rectangle cross-section; width of the cross section ranges between 0.2 and 0.5 mm, cross sectional height ranges between 1.5 and 2.0 mm and length of fibres ranges between 25 and 35 mm.
  • Strength of the first type of fibres is 350 - 450 MPa.
  • the second type of steel fibres has circle cross-section with diameter ranging between 0.08 and 0.12 m; their length is between 8 and 15 mm and their strength is higher than 2000 MPa.
  • the weight of both types of fibres together ranges between 100 and 280 kg/m 3 .
  • Ratio of the first and second type of fibres is expediential between 0.5/1.5 and 1.5/0.5.
  • the use of fibres from industrial waste is very advantageous.
  • the first type of fibres is profitably made from waste steel strip and the second type is made from cut cord fibres gained in recycling of tires.
  • the amount of admixtures varies between 5 and 15% of steel fibre reinforced concrete volume.
  • New solution consists in design of structure of cement composite, namely steel fibre reinforced concrete, where two different types of steel fibres are utilised.
  • the importance of the new solution significantly increases if the steel fibres are gained entirely from waste.
  • the result of utilisation of dispersed fibre of two different types is both strengthening of the steel fibre reinforced structure and providing of uniform distribution of coarse aggregate.
  • the necessary condition for the design of the steel fibre reinforced concrete composition is utilisation of basalt aggregate with common grain size distribution 0-4, 4-8, 8-16. Weight ratio of coarse sizes depends on required characteristics of hardened concrete.
  • Design of the steel fibre reinforced concrete composition is performed according to requirements on strength in compression, eventually tensile strength.
  • the dosage of aggregate ranges between 1500 - 2000 kg/m 3 depending on used weight batches of steel fibres.
  • Total weight of both types of fibres ranges between 100 - 280 kg/m 3 .
  • Steel fibres of the first type have rectangular cross-section 0.2- 0.5 mm / 1.5-2 mm, length of 25-30 mm and strength of 350-450 MPa; they are made from waste steel ribbons.
  • Steel fibres of the second type have circular cross- section with diameter of 0.08-0.12 mm, length of 8-15 mm and their strength is higher than 2000 MPa.
  • the second type of fibres is advantageously gained during recycling of tires.
  • the weight ratio of listed types of steel fibres is within the limits of 0.5:1.5 and 1.5:0.5; generally 1 : 1 ; the steel fibres are always evenly distributed in the hardened concrete.
  • Cement, admixtures and additives are dosed with the aim to reach dense structure of the steel fibre reinforced concrete.
  • the dense structure is the carrier of ultra-high strengths and provides suitable workability of the fresh steel fibre reinforced concrete by common compaction tools.
  • Basalt aggregate is composed from three sieve sizes, namely 0-4, 4-8 and 8-16, in the weight dose between 1500 and 2000 kg/m 3 .
  • the ratio of the sieve sizes is determined according to the demands of compressive strength of hardened steel fibre reinforced concrete. Water / cement ratio ranges between 0.16 and 0.25. Examples of composition of the steel fibre reinforced concrete, including recorded average strengths in compression and tensile splitting strength are listed in the table bellow. 1. example of high-performance concrete mix proportions:
  • the resulting compressive strength significantly exceeds the value of 60 MPa, which is the minimal limit for high-strength steel fibre reinforced concrete; that is why this material can be called high-strength one. Both strengths exceed common concrete strengths approximately six times; this implies utilisation of the material in extremely loaded elements such as columns of high-rise buildings, bridge piers and bridge decks.
  • Resulting compressive strength exceeds the value of 150 MPa, which is minimal limit for Ultra-high strength steel fibre reinforced concrete, that's why the material can be called ultra-high-strength.
  • This material is intended due to its properties for utilisation in extremely compressed elements or extremely slender elements, that may be required in designing of the entity. Composition of the material makes it resistant to freeze-and-thaw cycles and climate strains.

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

Abstract

Ultra-high strength steel fibre reinforced concrete with cement matrix contains silica cement, basalt aggregate, steel fibres, admixtures and additives. The dosage of admixtures is given by the results of the porosity tests of basalt aggregate and steel fibres mixture. The admixtures are dosed so that the required workability is reached; according to real application. There is 600 to 1000 kg/m3 of silica cement in cement matrix, basalt aggregate has three sieve sizes, namely 0-4, 4-8 and 8-16, the total dose of basalt aggregate is in the range 1500 and 2000 kg/m3. Ratio of sieve sizes is determined by granulometry and mineralogical composition of particular source of basalt aggregate. Water/cement ratio ranges between 0.16 and 0.25. Two types of steel fibres are evenly distributed in the volume of hardened steel fibre reinforced concrete. The first type of fibres has rectangular section with width ranging between 0.2 and 0.5 mm, height between 1.5 and 2.0 mm and length between 25 and 35 mm with strength between 350 and 450 MPa. The second type of steel fibres has circular section with diameter ranging between 0.08 and 0.12 mm, their length ranges between 8 and 15 mm and their strength is higher than 2000 MPa. The total weight of both types of fibres ranges between 100 and 280 kg/m3.

Description

Ultra-high strength steel fibre reinforced concrete
Background of the Invention
Submitted design concerning a new composition of steel fibre reinforced concrete with ultra-high strengths refers to composite materials with cement matrix with ultra-high compressive strengths, higher than 120 MPa. Description of Prior Art
Development of steel fibre reinforced composites with cement matrix nowadays aims to concretes called HPC or UHPC, accordingly high performance and ultra-high performance concretes characterized primarily by high average compressive strengths - about 200 MPa. The matter is based on dense structure of composites, achieved by cement dosage of 600 - 1000 kg/m3, by minimal water/cement ratio of (0.16 - 0.25) and by a type of steel fibres of 8 - 12 mm length and dosage of 100-300 kg/m3. The utilisation of special additives and admixtures is inevitable. Aggregate, as essential constituent of the composite, is used in fractions with maximum size of 2 or 4 mm. The main disadvantage of the solution is significant settling of steel fibres to bottom surface of the manufactured element. The effect happens because the fibres cannot be supported by bigger aggregates with size 8 or 16 mm. This leads to pronounced inhomogeneity of material and diminution of steel fibre reinforced concrete properties.
Summary of the Invention
The drawbacks listed above are removed by steel fibre reinforced concrete with ultra-high strengths with the cement matrix that contains silica cement, basalt aggregate, steel fibres, admixtures and additives. The amount of admixtures in the volume is given by results of tests of porosity of basalt aggregate and steel fibres. Admixtures are dosed to reach required workability for practical application. The principle of the new solution is that in cement matrix there is the amount 600 to 1000 kg/m3 of silica cement, basalt aggregate consists of three sieve sizes, namely 0-4, 4-8 and 8-16, water/cement ratio ranges between 0.16 and 0.25 and two types of steel fibres evenly distributed in the volume of hardened steel fibre reinforced concrete. The total dose of basalt aggregate is in the range of 1500 to 2000 kg/m3 and ratio of sieve sizes is determined by granulometry and mineralogical composition of particular source of basalt aggregate. Concerning the steel fibres, the first type of fibres has rectangle cross-section; width of the cross section ranges between 0.2 and 0.5 mm, cross sectional height ranges between 1.5 and 2.0 mm and length of fibres ranges between 25 and 35 mm. Strength of the first type of fibres is 350 - 450 MPa. The second type of steel fibres has circle cross-section with diameter ranging between 0.08 and 0.12 m; their length is between 8 and 15 mm and their strength is higher than 2000 MPa. The weight of both types of fibres together ranges between 100 and 280 kg/m3.
Ratio of the first and second type of fibres is expediential between 0.5/1.5 and 1.5/0.5.
The use of fibres from industrial waste is very advantageous. The first type of fibres is profitably made from waste steel strip and the second type is made from cut cord fibres gained in recycling of tires.
The amount of admixtures varies between 5 and 15% of steel fibre reinforced concrete volume.
New solution consists in design of structure of cement composite, namely steel fibre reinforced concrete, where two different types of steel fibres are utilised. The importance of the new solution significantly increases if the steel fibres are gained entirely from waste. The result of utilisation of dispersed fibre of two different types is both strengthening of the steel fibre reinforced structure and providing of uniform distribution of coarse aggregate. The necessary condition for the design of the steel fibre reinforced concrete composition is utilisation of basalt aggregate with common grain size distribution 0-4, 4-8, 8-16. Weight ratio of coarse sizes depends on required characteristics of hardened concrete.
Detailed Description of the Preferred Embodiments
Design of the steel fibre reinforced concrete composition is performed according to requirements on strength in compression, eventually tensile strength. The dosage of aggregate ranges between 1500 - 2000 kg/m3 depending on used weight batches of steel fibres. Total weight of both types of fibres ranges between 100 - 280 kg/m3. Steel fibres of the first type have rectangular cross-section 0.2- 0.5 mm / 1.5-2 mm, length of 25-30 mm and strength of 350-450 MPa; they are made from waste steel ribbons. Steel fibres of the second type have circular cross- section with diameter of 0.08-0.12 mm, length of 8-15 mm and their strength is higher than 2000 MPa. The second type of fibres is advantageously gained during recycling of tires. The weight ratio of listed types of steel fibres is within the limits of 0.5:1.5 and 1.5:0.5; generally 1 : 1 ; the steel fibres are always evenly distributed in the hardened concrete. Cement, admixtures and additives are dosed with the aim to reach dense structure of the steel fibre reinforced concrete. The dense structure is the carrier of ultra-high strengths and provides suitable workability of the fresh steel fibre reinforced concrete by common compaction tools. There is 600 to 1000 kg/m3 of silica cement in the cement matrix. Basalt aggregate is composed from three sieve sizes, namely 0-4, 4-8 and 8-16, in the weight dose between 1500 and 2000 kg/m3. The ratio of the sieve sizes is determined according to the demands of compressive strength of hardened steel fibre reinforced concrete. Water / cement ratio ranges between 0.16 and 0.25. Examples of composition of the steel fibre reinforced concrete, including recorded average strengths in compression and tensile splitting strength are listed in the table bellow. 1. example of high-performance concrete mix proportions:
Figure imgf000005_0002
Results of compressive strengths
Figure imgf000005_0001
Results of tensile splitting strength
Figure imgf000006_0002
The resulting compressive strength significantly exceeds the value of 60 MPa, which is the minimal limit for high-strength steel fibre reinforced concrete; that is why this material can be called high-strength one. Both strengths exceed common concrete strengths approximately six times; this implies utilisation of the material in extremely loaded elements such as columns of high-rise buildings, bridge piers and bridge decks.
2. example of the mixture composition of the high-performance concrete:
Figure imgf000006_0001
Results of compressive strengths
Figure imgf000007_0001
Resulting compressive strength exceeds the value of 150 MPa, which is minimal limit for Ultra-high strength steel fibre reinforced concrete, that's why the material can be called ultra-high-strength. This material is intended due to its properties for utilisation in extremely compressed elements or extremely slender elements, that may be required in designing of the entity. Composition of the material makes it resistant to freeze-and-thaw cycles and climate strains.
For the mix recipe P1 tensile strength was not experimentally verified. During the investigations the assumption was confirmed that the tensile strength is 1/10 of compressive strength. This ratio satisfies also the model mix recipe C1. For the mixture P1 tensile strength between 19.5 MPa and 16 MPa can be assumed.
Industrial Applicability
Ultra-high strengths of steel fibre reinforced concrete (SFRC), that is the matter of the solution, predestinate SFRC for utilisation in concrete building industry. Its application in real structures surely will lead to much thinner structures compared to structures made from common ordinary concretes and high-strength concretes. Utilisation of steel fibre reinforced concrete is assumed especially for the structures that cannot be constructed in present conditions, i.e. extremely structurally demanding and complicated details of concrete structures regarding reinforcing with common rebar reinforcement and prestressing tendons.
The industrial utilisation of steel fibre reinforced concrete is encouraged by the way of its manufacturing, which can be performed by common machine equipment of concrete plants. Small strains due to shrinkage and creep that result from the structure of concrete with dispersed steel fibres that stiffen the structure of manufactured steel fibre reinforced concrete are also very important.

Claims

P A T E N T C L A I M S
1. Ultra-high strength steel fibre reinforced concrete with cement matrix, containing silica cement, basalt aggregate, steel fibres, admixtures and additives, where the dosage of admixtures in batch is given by the results of porosity tests of the mixture of basalt aggregate and steel fibres and admixtures are dosed so that required workability was reached according to real application characterized by the fact that the cement matrix contains 600 to 1000 kg/m3 of silica cement, basalt aggregate is compounded of three sieve sizes, namely aggregate sieve sizes 0-4, 4-8 and 8-16, whose total weight dose is between 1500 and 2000 kg/m3 and ratio of sieve grain sizes is given on the basis of granulometry and mineralogical composition of particular source of basalt aggregate, water/cement ratio ranges between 0.16 and 0.25 and steel fibres consist of two types of evenly distributed in volume of hardened concrete, where the first type of fibres has rectangular section with the width between 0.2 and 0.5 mm, height between 25 and 35 mm and strength 350 and 450 MPa and the second type of steel fibres has circular section with diameter ranging between 0.08 and 0.12 mm and their length is between 8 and 15 mm and their strength is higher than 2000 MPa and total weight ranges between 100 and 280 kg/m3.
2. Ultra-high strength steel fibre reinforced concrete according to the first claim characterised by the ratio of the first type and second type of fibres ranging between 0.5:1.5 and 1.5:0.5.
3. Ultra-high strength steel fibre reinforced concrete according to the first and second claim characterised by manufacturing of the first type of steel fibres from waste steel ribbon and the second type of steel fibres is from cut cord wires gained in recycling of tyres.
4. Steel fibre reinforced concrete according to any of claims 1 , 2 and 3 characterised by the fact that the dosage of additives ranges between 5 and 15% of volume of manufactured steel fibre reinforced concrete.
PCT/CZ2013/000161 2012-12-17 2013-12-05 Ultra-high strength steel fibre reinforced concrete Ceased WO2014094692A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SK50010-2015A SK288599B6 (en) 2012-12-17 2013-12-05 Wire concrete with ultrahigh firmness
DE112013006042.6T DE112013006042T5 (en) 2012-12-17 2013-12-05 Ultrahigh-strength steel fiber concrete

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CZ2012-903A CZ2012903A3 (en) 2012-12-17 2012-12-17 Steel-fiber-reinforced concrete of ultrahigh strength
CZPV2012-903 2012-12-17

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016198603A1 (en) * 2015-06-11 2016-12-15 Cemex Research Group Ag Concrete mix designs using a plurality of reinforcement fibers systems
ITUB20160072A1 (en) * 2016-01-19 2017-07-19 Italcementi Spa CONCRETE WITH HIGH PERFORMANCE AND ITS STRUCTURAL USE
EP3351518A1 (en) * 2017-01-24 2018-07-25 CVUT v Praze Method of homogenization of high-performance or ultra-high-performance concrete
IT201900002651A1 (en) * 2019-02-25 2020-08-25 Varicom Italia S R L PREFABRICATED REINFORCED CONCRETE PLATES FOR THE CONSTRUCTION OF VERTICAL TAKE-OFF AIRCRAFT LAUNCH RAMPS AND RELATED INDUSTRIAL MANUFACTURING PROCESS
CN114278368A (en) * 2022-01-07 2022-04-05 安徽铜冠（庐江）矿业有限公司 A kind of filling protective layer and construction method based on steel fiber concrete
CN114920478A (en) * 2022-05-17 2022-08-19 重庆三峡学院 Anti-cracking and anti-impact hybrid fiber concrete and preparation method thereof
CN115125882A (en) * 2022-08-22 2022-09-30 扬州大学 High-speed railway assembled ultra-high performance concrete sound barrier structure and construction process
CN117266919A (en) * 2023-08-21 2023-12-22 贵州息烽磷矿有限责任公司 A kind of mining fiber filling system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305508B6 (en) * 2014-10-30 2015-11-04 České vysoké učení technické v Praze- Kloknerův ústav Heat cured concrete of ultrahigh strength reinforced with wires and intended particularly for prefabrication, and process for producing thereof
AT16500U1 (en) * 2018-03-20 2019-11-15 Kirchdorfer Fertigteilholding Gmbh FIBER REINFORCING FIBER
CN116177961A (en) * 2023-03-07 2023-05-30 中国民航大学 Hybrid fiber reinforced concrete material and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101318801A (en) * 2008-07-09 2008-12-10 东南大学 Cement-based material with good fluidity and high strength and preparation method thereof
CN102092996A (en) * 2010-11-30 2011-06-15 南京理工大学 Cement-based composite material with high-temperature resistance and superhigh performance and preparation method thereof
EP2492254A1 (en) * 2009-10-20 2012-08-29 Universitat Politécnica De Catalunya Ultra-high-strength concrete reinforced with steel fibres

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01162267A (en) * 1987-12-18 1989-06-26 Sanyo Electric Co Ltd Tape loading method
MY115314A (en) * 1994-07-01 2003-05-31 Neturen Co Ltd High strenght, high weldability steel bars and wires for prestressed concrete
FR2771406B1 (en) * 1997-11-27 2000-02-11 Bouygues Sa METAL FIBER CONCRETE, CEMENT MATRIX AND PREMIXES FOR THE PREPARATION OF THE MATRIX AND CONCRETE
FR2804952B1 (en) * 2000-02-11 2002-07-26 Rhodia Chimie Sa ULTRA HIGH PERFORMANCE FIRE RESISTANT CONCRETE COMPOSITION
FR2808522B1 (en) * 2000-05-03 2003-01-10 Chaussees Tech Innovation FIBER REINFORCED COMPACT ROUND CONCRETE COMPOSITION AND METHOD FOR MAKING A PAVEMENT FROM SAID COMPOSITION

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101318801A (en) * 2008-07-09 2008-12-10 东南大学 Cement-based material with good fluidity and high strength and preparation method thereof
EP2492254A1 (en) * 2009-10-20 2012-08-29 Universitat Politécnica De Catalunya Ultra-high-strength concrete reinforced with steel fibres
CN102092996A (en) * 2010-11-30 2011-06-15 南京理工大学 Cement-based composite material with high-temperature resistance and superhigh performance and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 200909, Derwent World Patents Index; AN 2009-B34068, XP002723734 *
DATABASE WPI Week 201155, Derwent World Patents Index; AN 2011-J07712, XP002723735 *
HORSZCZARUK ET AL: "Hydro-abrasive erosion of high performance fiber-reinforced concrete", WEAR, ELSEVIER SEQUOIA, LAUSANNE, CH, vol. 267, no. 1-4, 15 June 2009 (2009-06-15), pages 110 - 115, XP026133248, ISSN: 0043-1648, [retrieved on 20090523], DOI: 10.1016/J.WEAR.2008.11.010 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016198603A1 (en) * 2015-06-11 2016-12-15 Cemex Research Group Ag Concrete mix designs using a plurality of reinforcement fibers systems
WO2016198608A1 (en) * 2015-06-11 2016-12-15 Cemex Research Group Ag Advanced fiber reinforced concrete mix designs and admixtures systems
WO2016198108A1 (en) * 2015-06-11 2016-12-15 Cemex Research Group Ag Advanced fiber reinforced concrete mix designs
US10259747B2 (en) 2015-06-11 2019-04-16 Cemex Research Group Ag Advanced fiber reinforced concrete mix designs and admixtures systems
ITUB20160072A1 (en) * 2016-01-19 2017-07-19 Italcementi Spa CONCRETE WITH HIGH PERFORMANCE AND ITS STRUCTURAL USE
EP3351518A1 (en) * 2017-01-24 2018-07-25 CVUT v Praze Method of homogenization of high-performance or ultra-high-performance concrete
IT201900002651A1 (en) * 2019-02-25 2020-08-25 Varicom Italia S R L PREFABRICATED REINFORCED CONCRETE PLATES FOR THE CONSTRUCTION OF VERTICAL TAKE-OFF AIRCRAFT LAUNCH RAMPS AND RELATED INDUSTRIAL MANUFACTURING PROCESS
CN114278368A (en) * 2022-01-07 2022-04-05 安徽铜冠（庐江）矿业有限公司 A kind of filling protective layer and construction method based on steel fiber concrete
CN114920478A (en) * 2022-05-17 2022-08-19 重庆三峡学院 Anti-cracking and anti-impact hybrid fiber concrete and preparation method thereof
CN115125882A (en) * 2022-08-22 2022-09-30 扬州大学 High-speed railway assembled ultra-high performance concrete sound barrier structure and construction process
CN115125882B (en) * 2022-08-22 2023-11-24 扬州大学 High-speed railway assembled ultra-high performance concrete sound barrier structure and construction process
CN117266919A (en) * 2023-08-21 2023-12-22 贵州息烽磷矿有限责任公司 A kind of mining fiber filling system

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DE112013006042T5 (en) 2015-11-19
WO2014094692A4 (en) 2014-08-28
CZ304478B6 (en) 2014-05-21
CZ2012903A3 (en) 2014-05-21
SK288599B6 (en) 2018-10-01
SK500102015A3 (en) 2015-08-04

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