STEKON fiber-reinforced plastic rebar

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STEKON fiber-reinforced polymer rebar (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 rebars Аlll (А400С)	STEKON fiber-reinforced polymer rebar
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 rebars, gives economical and process benefit at reinforcing a civil structure through substituting metal rebars for equally strong STEKON fiber-reinforced polymer rebar of minor diameter (examples provided in a comparative table below):

Metal rebar of А-III grade (А400С) GOST 5781-82		STEKON fiber-reinforced polymer rebar
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 rebars to a destinationsite
reductioninman-hoursforon-and-off loading activities, which require no machinery

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

Diameter of a rebar, mm	Metal rebar of grade А- III (А400С) (kg/1 l.m.)	Diameter of a rebar, mm	STEKON fiber-reinforced polymer rebar(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	0.70.70.04	0.043
6	100	1.01.00.05	0.054
6	50	0.90.90.025	0.024
8	100	1.21.20.08	0.097
8	50	1.11.10.05	0.049
10	50	1.81.80.06	0.150

Cost effective delivery of material
Shrunkstorage space for storing the rebars
Reduced losses when cut to necessary size
Rebars 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 rebar, 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.
Rebars 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