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  • STEKON fiber-reinforced polymer bar (composite rebar) referstorods made of reinforcing fibers which are impregnated with polymer thermosetting biпding agent and hardened, with transversal or helical ribs made on surface of the rods.

  • Physical and mechanical properties

     

    Material

    Steel bars

    Аlll (А400С)

    STEKON fiber-reinforced polymer bar
    Ultimate tensile strength, MPa

    stests based average  - 390

    sdeclared - 355

    stests based average – 1200

    sdeclared - 1100

    Elongation, % up to 14 2.2
    Heat conductivity factor, W/(m·°С) 46 0.35
    Young's modulus of elasticity, MPa 200 000 55 000
    Linear expansion factor 13-15 9-12
    Density, g/cm3 7.8 1.9
    Resistance to corrosion low high
    Electric conductivity yes no
    Length of rods 6-12m not limited

     

     

  • Typical application:

     

    • footing of residential buildings, industrial strictures and other structural concepts on elastic foundations

    • industrial flooring and open platforms for machinery

    • hydraulic works (purification and treatment facilities, water sluices and water-draining facilities, pumping stations)

    • bridgeworks, berthing and marine facilities

    • tunnels structures

    • normal and pre-stressed civil structures when constructing monolithic concrete and prefabricated buildings

    • structural parts as individual rods

    • retaining walls and structures

    • load-bearing/non-loadbearing wall elements

    • concrete elements and structures on foundation (footings, floors, slabs and etc.)

    • bridges

    • railroad beds

    • fencings

    • electric power plants, buildings and facilities involving electromagnetic emission

    • building and facilities for storing solid domestic wastes, highly-toxic wastes.

     

  • When it comes to a justifying calculation, Ultimate tensile strength, being one of the main characteristics of bars, gives economical and process benefit at reinforcing a civil structure through substituting metal bars for equally strong STEKON fiber-reinforced polymer bar of minor diameter (examples provided in a comparative table below):

      

    Metal bar of А-III grade (А400С)

    GOST 5781-82

     12 STEKON fiber-reinforced polymer bar
    6А-III FRP STEKONØ4
    8А-III FRP STEKONØ6
    10А-III FRP STEKONØ7
    12А-III FRP STEKONØ8
    14А-III FRP STEKONØ10
    16А-III FRP STEKONØ12
    18А-III FRP STEKONØ14
    20А-III FRP STEKONØ16
    22А-III FRP STEKONØ18
    25А-III FRP STEKONØ20

     

    Low weight:
    • significant reduction (5-10 times)in spending for delivering bars to a destinationsite
    • reductioninman-hoursforon-and-off loading activities, which require no machinery

     

    Comparison between weights of metal and fiber-reinforced polymer bars, if equal in strength

    Diameter of a bar,

    mm

    Metal bar of grade

    А- III (А400С) (kg/1 l.m.)

    Diameter of a bar,

    mm

    STEKON fiber-reinforced polymer bar(kg/1 l.m.)
    6 0.222 4 0.035
    8 0.395 6 0.057
    10 0.617 7 0.08
    12 0.888 8 0.1
    14 1.21 10 0.16
    16 1.58 12 0.22
    18 2 14 0.31
    20 2.47 16 0.41

     

    Easy installation:

    • Use of building machinery may be totally abandoned
    • Reduced period of building and assembling works

     

    High resistance to corrosion

    • Possibleuseunder exposure to aggressive media
    • Possible thinning of protective concrete layer
    • Extendedoperationallifetimeof a facility
    • Extendedinter-maintenance period
    • Reduced expenses for operation of a facility

     

    Easy transportation and storage

    Cross-section diameter, mm Linear meters in a bundle Bundle dimensions (m) Volume of 1 bundle (m3)
    4 100 0.7*0.7*0.04 0.043
    6 100 1.0*1.0*0.05 0.054
    6 50 0.9*0.9*0.025 0.024
    8 100 1.2*1.2*0.08 0.097
    8 50 1.1*1.1*0.05 0.049
    10 50 1.8*1.8*0.06 0.150
    • Cost effective delivery of material
    • Shrunkstorage space for storing the bars
    • Reduced losses when cut to necessary size
    • Bars of greater diameters are produced only as rods
    • Any length of rodsor coiling is possible uponagreeingaboutwithacustomer

     

    Coiling is possible

    • With its inherent strength performance and its structure being essentially different from structure of steel, fiber-reinforced polymer bar, if 4 to 12 mm in diameter, can be coiled. As a result, alongside with thereby optimized logistics, storage and installation, butt-joints may almost be avoided while reinforcing framework composed of solid rods.
    • Bars of greater diameters are produced only as rods
    • Any length of rods or coiling is possible upon agreeing about with a customer

      

     Cost efficiency

    • Assuming apossible calculated substitution of diameters, direct saving would achieve 10-30% o wing to reduced cost of reinforcing framework
    • Subject to optimization of building machinery, process savings may be several times greater than direct savings