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      Q&A十问十答玄武岩纤维系列(七)

      Source: Time:2018-10-25

    •   Q7
        Q: What are the standard specifications for basalt fiber currently used in roads? How is it recommended in these important standard specifications?
        R: The State, the Ministry of Transport and the Ministry of Housing have separately issued six national standards and five industry standards for basalt fiber, and local standards and norms have been issued in various regions.
        The China Highway Society, as a group standard pilot unit, has also publicized the draft of the two group standards for the basalt fiber construction technical guide, which is expected to be officially released in October and November this year.

        National standards:
        01 "Chopped Basalt Fiber for Cement Concrete and Mortar" (GB/T 23265-2009)
        National Standard of the People’s Republic of China
        GB/T 23265-2009
        Chopped Basalt Fiber for Cement Concrete and Mortar
        2009-03-09 Released             
        2009-11-05 Implemented
        General Administration of Quality Supervision, Inspection and Quarantine of the People''''s Republic of China
        China National Standardization Administration
        Introduction
        Basalt fiber is an inorganic fiber produced from natural volcanic rock and is a pure natural green fiber. Basalt fiber is provided with high tensile strength, shear strength and elastic modulus, good chemical stability, anti-aging, acid and alkali resistance, high temperature and low temperature resistance, thermal insulation and electrical insulation, and sound insulation and etc.
        Chopped basalt fibers for cement concrete and mortar are chopped from continuous basalt fibers. Adding chopped basalt fiber to cement concrete and mortar can reduce early cracks in concrete and mortar, improve anti-seepage, crack resistance and impact resistance, corrosion resistance, durability and reduce the brittleness coefficient of concrete and mortar. Moreover, the construction performance is good, the fiber is easy to disperse when mixed with cement concrete or mortar, the volume is stable, and the workability is good. Therefore, the chopped basalt fiber has good crack resistance, toughening and strengthening effect on concrete and mortar. Currently, it is widely used in China''''s key projects such as water conservancy, transportation, military industry and construction, and has achieved obvious social and economic benefits.
        Chopped basalt fibers for cement concrete and mortar
        Ⅰ. Scope:
        The standard specifies the terms and definitions, classification, requirements, test methods, inspection rules, signs, ex-factory, packaging, transportation, storage, etc. of chopped basalt fiber for cement concrete and mortar.
        The standard is applicable to short lengths less than 50mm, which can be added in cement concrete or mortar before cement concrete or mortar mixing or in the process of mixing, to improve the performance of fresh concrete and mortar, hardened concrete and mortar.
        02 "Basalt fiber roving" (GB/T 25045-2010)
        National Standard of the People’s Republic of China
        GB/T 25045-2010
        Basalt fiber roving
        2010-09-02Released
        2011-05-01 Implemented
        General Administration of Quality Supervision, Inspection and Quarantine of the People''''s Republic of China
        China National Standardization Administration
        Basalt fiber roving
        Ⅰ. Scope:
        This standard specifies the terms& definitions, classification &records, requirements, test methods, inspection rules, marking, packaging, transportation and storage of basalt fiber roving.
        This standard is applicable to basalt fiber roving made of basalt fiber directly roving or by plied.
        03 "Basic blast fiber composites for structural reinforcement and repair" (GB/T 26745-2011)
        National Standard of the People’s Republic of China
        GB/T 26745-2011
        Basic blast fiber composites for structural reinforcement and repair
        2011-07-20 Released             
        2012-03-01 Implemented
        General Administration of Quality Supervision, Inspection and Quarantine of the People''''s Republic of China
        China National Standardization Administration
        Basic blast fiber composites for structural reinforcement and repair
        Ⅰ. Scope:
        This standard specifies the terms& definitions, classification, specifications &markings, requirements, test methods, inspection rules, marking, packaging, transportation and storage of basalt fiber conforming materials for structural reinforcement and repair.
        This standard is applicable to basalt fiber composite materials for building structure and reinforcement &repair, also applicable to basalt fiber composite materials for reinforcement & repair of heavy structures such as transportation, water conservancy, nuclear power and energy.
        04 "Technical Specifications for Application of Fiber Reinforced Composite Construction Engineering" (GB 50608-2010)
      National Standard of the People’s Republic of China
        GB/T 50608-2010
        Technical Specifications for Application of Fiber Reinforced Composite Construction Engineering
        2010-08-18 Released
        2011-06-01 Implemented
        Ministry of Housing and Urban-Rural Development of the People''''s Republic of China
        General Administration of Quality Supervision, Inspection and Quarantine of the People''''s Republic of China
        General
        Ⅰ. This specification has been formulated in order to make fiber reinforced composite materials in the construction engineering application to be technologically advanced, safe and applicable, economical and reasonable, as well as ensure quality.
        Ⅱ. This code is applicable to concrete structures and masonry structures. It is designed, constructed and accepted for reinforcement and repair of bonded fiber reinforced composite sheets, as well as fiber reinforced composite ribs and prestressed fiber reinforced composite reinforced concrete structural members and fiber reinforced composites. Design and construction of pipe concrete members and fiber reinforced composite materials-concrete composite beams.
        Ⅲ. The application of fiber reinforced composite materials in construction projects, in addition to complying with this specification, should be in accordance with the current relevant national standards.
        05 "Fiber Reinforced Composite Grid for Structural Engineering" (GB/T 36262-2018)
        National Standard of the People’s Republic of China
        GB/T 36262-2018
        Fiber Reinforced Composite Grid for Structural Engineering
        2018-06-07 Released
        2019-01-01 Implemented
        General Bureau of State Market supervision and Administration
        General Administration of Quality Supervision, Inspection and Quarantine of the People''''s Republic of China
        Fiber Reinforced Composite Grid for Structural Engineering
        Ⅰ. Scope:
        This standard specifies the terms & definitions, classification & marking, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of fiber reinforced composite materials for structural engineering.
        This standard is applicable to the fiber reinforced composite material grid (hereinafter referred to as composite material grid) which has both structural reinforcement and new structure reinforcement for civil engineering.
        06 "Fiber Reinforced Composite Materials for Structural Engineering" (GB/T 26743-2011)
        National Standard of the People’s Republic of China
        GB/T 26743-2011
        Fiber Reinforced Composite Material Ribs for Structural Engineering
        2011-07-20 Released             
        2012-03-01 Implemented
        General Administration of Quality Supervision, Inspection and Quarantine of the People''''s Republic of China
        China National Standardization Administration
        Fiber Reinforced Composite Material Ribs for Structural Engineering
        Ⅰ. Scope:
        This standard specifies the terms & definitions, classification & marking, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of fiber reinforced composite material ribs for structural engineering (hereinafter referred to as composite material ribs).
        This standard is applicable to fiber reinforced composite ribs with a diameter of 20 mm or less in the use of structural members reinforced materials in civil engineering.
        07 "Basalt fiber code" (GB 20171035-T-069)
        This national standard was established in March 2017 and the corresponding content is still being prepared.
        Industry Standard
        01 "High-speed basalt fiber and its products" (JT/T 776-2010)
        People''''s Republic of China Transportation Industry Standard
        JT/T 776-2010
        Highway engineering basalt fiber and its products
        Part Ⅰ: Basalt Chopped Fibers
        Highway engineering basalt fiber and its products
        Part Ⅱ: Basalt fiber unidirectional cloth
        Highway engineering basalt fiber and its products
        Part Ⅲ: Basalt fiber geo-grids
        Highway engineering basalt fiber and its products
        Part Ⅳ. Basalt fiber composite ribs
        Highway engineering basalt fiber and its products
        Part Ⅰ: Basalt Chopped Fibers
        Ⅰ. Scope:
        This section of JT/T776 specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of basalt chopped fibers.
        This section is applicable to the continuous basalt fiber which is made through the short cutting machine as the main raw material. It is mainly used to strengthen basalt chopped fibers of cement concrete, cement mortar, asphalt concrete and asphalt mortar. Other uses can be used as a reference.
        Highway engineering basalt fiber and its products
        Part Ⅱ: Basalt fiber unidirectional cloth
        Ⅰ. Scope:
        This section of JT/T776 specifies the model, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of basalt fiber unidirectional cloth.
        This section is applicable to basalt fiber unidirectional cloth which is made of basalt fiber roving as the main raw material and adhered (sewn) only after the roving of the basalt fiber is applied in parallel. It is mainly used for reinforcement and reinforcement of highway engineering structures. Other uses of basalt fiber unidirectional fabric can be used as a reference.
        Highway engineering basalt fiber and its products
         Part Ⅲ: Basalt fiber geo-grids
        Ⅰ. Scope:
        This section of JT/T776 specifies the model, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of basalt fiber geo-grids.
        This section is applicable to basalt fiber geo-grids which is woven and surface treated with basalt fiber roving as the main raw material. It is mainly used to enhance the crack resistance and durability of the road surface. Other purposes can be used as a reference.
        Highway engineering basalt fiber and its products
        Part Ⅳ. Basalt fiber composite ribs
        Ⅰ. Scope:
        This section of JT/T776 specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of basalt fiber composite ribs.
        This section is applicable to basalt fiber rods which are made of basalt fiber roving as the main raw material, and the fused roving bundle after being dipped under a certain tension through a special thermoforming mold. It is mainly used for highway engineering. Other purposes can be used as a reference.
        02 "Fiber Reinforced Composite Bars" (JG/T351-2012)
        People''''s Republic of China Construction Industry Standard
        JG/T 351-2012
        Fiber reinforced composite ribs
        2012-02-06 Released
        2012-05-01 Implemented
        Ministry of Housing and Urban-Rural Development of the People''''s Republic of China
        Fiber reinforced composite ribs
        Ⅰ. Scope:
        This standard specifies the terms & definitions, classification & marking, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of Fiber reinforced composite ribs (hereinafter referred to as fiber ribs).
        This standard applies to fiber reinforced composite material reinforced products for construction engineering.
        People''''s Republic of China Construction Industry Standard
        JG/T 351-2012
        Fiber reinforced composite ribs
        2012-02-06 Released
        2012-05-01 Implemented
        Ministry of Housing and Urban-Rural Development of the People''''s Republic of China
        Fiber reinforced composite ribs
        Ⅰ. Scope:
        This standard specifies the terms & definitions, classification & marking, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of Fiber reinforced composite ribs (hereinafter referred to as fiber ribs).
        This standard applies to fiber reinforced composite material reinforced products for construction engineering.
      03 "Fiber Reinforced Composite Grille" (JG/T364-2012)
        People''''s Republic of China Construction Industry Standard
        JG/T 364-2012
        Fiber reinforced composite grids
        2012-02-09 Released
        2012-08-01 Implemented
        Ministry of Housing and Urban-Rural Development of the People''''s Republic of China
        Fiber reinforced composite grids
        Ⅰ. Scope:
        This standard specifies the terms & definitions, classification & marking, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of fiber reinforced composite grids (hereinafter referred to as fiber grids).
        This standard is mainly applicable to flexible fiber reinforced composite grids that improve structural properties.
        04 "Basalt Fiber Sheet for Structural Reinforcement" (JG/T365-2012)
        People''''s Republic of China Construction Industry Standard
        JG/T 365-2012
        Basalt Fiber Sheet for Structural Reinforcement
        2012-03-15 Released
        2012-08-01 Implemented
        Ministry of Housing and Urban-Rural Development of the People''''s Republic of China
        Basalt Fiber Sheet for Structural Reinforcement
        Ⅰ. Scope:
        This standard specifies the terms & definitions, classification & marking, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of Basalt Fiber Sheet for Structural Reinforcement
        This standard is applicable to basalt fiber sheets for structural reinforcement of concrete structures, wood structures, masonry structures and steel structures.
        05 "Technical Specifications for Construction of Highway Cement Concrete Pavement" (JTG/T F30-2014)
        People''''s Republic of China Construction Industry Standard
        JTG/T F30-2014
        Technical Specifications for Construction of Highway Cement Concrete Pavement
        2014-01-10 Released
        2014-04-01 Implemented
        Ministry of Transport of the People''''s Republic of China
        Technical Specifications for Construction of Highway Cement Concrete Pavement
        Ⅰ. Recycled aggregate
        It is sieved by mechanically crushing the old structural concrete.
        Ⅱ.Basalt chopped fibers
        It is made from continuous basalt chopped fibers.
        Ⅲ. Synthetic fiber
        It is made from a synthetic polymer compound. Commonly used are polyacrylonitrile, polyamide, polyvinyl alcohol, polypropylene fiber and etc.
        Ⅳ. Silicone joint filler
        It is a one-component or multi-component joint compound which has a polysiloxane polymer as a main component and can be fixed at a normal temperature.
        Ⅴ. Sealing membrane
        A flexible functional layer provided with an isolating and anti-scouring function on the surface of the semi-rigid upper base layer may be formed by an asphalt surface-forming process, and the laid-off sealing layer is fully covered by a water-impermeable film or an asphalt linoleum.
        Ⅵ. Vibration viscosity coefficient
        Under the action of specific vibration energy, the concrete mixture hinders the relative movement of coarse and fine aggregates, bubbles and other particles, and the index characterizing the friction resistance is used to determine the vibrating and easiness of the concrete mixture.
        Ⅶ. Fill volume ratio
        The volume occupied by coarse aggregates in concrete is expressed as a percentage.
        Ⅷ. Fiber concrete surface
        Add steel fiber, basalt fiber or synthetic fiber in cement concrete.
        Ⅸ. Slipper paving
        To adopt the construction process of paving cement concrete surface layer with slip film paver. The utility model is characterized in that the construction process of not fixing the edge fixed template, cloth, paving, vibrating compaction, extrusion molding, surface modification and the like is continuously completed during the traveling of the paver.
       Group standards
        01 "Guidelines for Highway Engineering Basalt Fibers"
        Standards of China Highway &Transportation Society
        T/CHTS 10001-2017
        Technical Guide for Application of Basalt Fiber in Highway Engineering
        (Consultation draft)
        Standards of China Highway &Transportation Society
        The group standard was established in Dec 2016, and the consultation draft began to be publicized in Sept 2018. It is expected to be officially released in Nov this year.
        02 "Technical Guide for Basalt Fiber Asphalt Concrete Pavement"
        Standards of China Highway &Transportation Society
        T/CHTS XXXXX-2018
        Technical Guideline for Asphalt Concrete Pavement with Basalt Fiber
        (Consultation draft)
        Standards of China Highway &Transportation Society
        The group standard was established in JUN 2017, and the consultation draft began to be publicized in AUG 2018. It is expected to be officially released in OCT this year.
        Reference guide
        Technical Guideline for Asphalt Concrete Pavement with Basalt Fiber
        Ⅰ. General
        Ⅰ.Ⅰ In order to standardize the technical requirements for the application of basalt fiber in asphalt pavement, as well as to unify the design, construction and quality acceptance criteria, this guide is specially formulated.
        Ⅰ.Ⅱ Basalt fiber is suitable for all grades of asphalt pavements which were built, rebuilt and expanded in China.
        Article descriptions: Basalt fiber can significantly improve the high temperature stability, low temperature crack resistance and fatigue resistance of asphalt mixture. Referring to the existing engineering experience and application, this guide proposes that basalt fiber is suitable for new or modified asphalt pavements of various grades of highways, urban roads, airport roads, and port roads.
        Ⅰ.Ⅲ Basalt fiber can be used for various surface layers of asphalt pavement or other structural functional layers.
        Article descriptions: The basalt fiber is suitable for the upper layer, the middle layer and the lower layer of the asphalt pavement, and can also be used for a functional layer such as a stress absorbing layer.
        Ⅰ.Ⅳ The guideline defines the production, transportation, storage and other aspects of basalt fiber asphalt mixture, as well as the quality control standards during the construction and construction of basalt fiber asphalt concrete pavement.
        Ⅰ.Ⅴ The laboratory for testing basalt fiber asphalt concrete should pass the certification and obtain the corresponding qualifications. The test personnel should be certified and the equipment should be qualified.
        Ⅰ.Ⅵ The design, construction and acceptance of basalt fiber asphalt concrete pavement should comply with the provisions of this Guide, and also comply with the relevant national standards.
         Local standards
        At present, most provinces such as Zhejiang, Jiangsu, Jilin, Hebei, Henan, Sichuan, etc., which have basalt fiber production enterprises, have established local standards and construction guidelines for basalt fibers.
        Ⅰ. Jilin
        Local standards of Jilin Province
        Design and Construction Code for Basalt Fiber Composite Rebar and Basalt Fiber Concrete
        Part Ⅰ. Basalt Fiber Composite Rebar
        2017-12-11 Released
        2018-04-01 Implemented
        Quality and Technical Supervision Bureau of Jilin Province
        Other relevant standards:
        Ⅰ.Ⅰ Basalt fiber reinforced concrete and basalt fiber reinforced concrete design and construction specification - Part 2: Basalt fiber cement concrete (DB22/T 2797.2-2017)
        Ⅰ.Ⅱ Technical specification for design and construction of basalt fiber asphalt mixture (DB22/T 2786-2017)
        Ⅱ. Sichuan
        Local standards of Jilin Province
        Design and Construction Code for Basalt Fiber Composite Rebar and Basalt Fiber Concrete
        Part Ⅰ. Basalt Fiber Composite Rebar
        2017-12-11 Released
        2018-04-01 Implemented
       Quality and Technical Supervision Bureau of Jilin Province
         Other relevant standards:
        Ⅰ.Ⅰ Basalt fiber reinforced concrete and basalt fiber reinforced concrete design and construction specification - Part 2: Basalt fiber cement concrete (DB22/T 2797.2-2017)
        Ⅰ.Ⅱ Technical specification for design and construction of basalt fiber asphalt mixture (DB22/T 2786-2017)
        Local standards of Jilin Province
        Design and Construction Code for Basalt Fiber Composite Rebar and Basalt Fiber Concrete
        Part Ⅰ. Basalt Fiber Composite Rebar
        2017-12-11 Released
        2018-04-01 Implemented
        Quality and Technical Supervision Bureau of Jilin Province
        Other relevant standards:
        Ⅰ.Ⅰ Basalt fiber reinforced concrete and basalt fiber reinforced concrete design and construction specification - Part 2: Basalt fiber cement concrete (DB22/T 2797.2-2017)
        Ⅰ.Ⅱ Technical specification for design and construction of basalt fiber asphalt mixture (DB22/T 2786-2017)
        Local standards of Sichuan Province
        Standard Specification for Construction of Asphalt Pavement with Basalt Fiber
        (Draft)
        Quality and Technical Supervision Bureau of Sichuan Province
        Other relevant standards:
        Ⅰ.Ⅰ Basalt fiber resin impregnation rate test method (DB51/T 2320-2017)
        Ⅰ.Ⅱ Test method for tensile properties of basalt fiber monofilament (DB51/T 2321-2017)
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