Raw Materials Corp.

2681 N.E. 4th AVE
POMPANO BEACH, FL 33064
ph: 954-803-9206
alt: 954-270-9000
bill@newrebar.com

Specifications

RockRebar® was released after ACI 440.6-08 was published so basalt was not specifically mentioned. ASTM testing of RockRebar®indicates that continuous basalt fiber in epoxy polymer materials exceed those of silica based fiberglass and easily meet American Concrete Institute (ACI) minimum performance requirements.

RockRebar® can be placed to meet code requirements by using the calculations and installation guidelines for fiberglass reinforcement of concrete as defined in ACI 440.6-08.

RockRebar™ is approved as natural fiberglass meeting the certification specifications of ACI 440.6-08 and signed of as fiberglass re bar. In doing so the job will simply be overbuilt because the physicals of RR are higher than fiberglass falling between fiberglass and carbon fiber yet at a sales price much lower than carbon fiber and slightly less in initial cost when com paired to corrosion resistant steels.

The physical strength of RockRebar® rods from 4 mm to 25 mm diameters rods change as the diameter goes up, with smaller diameter rods generally having higher tensile strength. Typical examples are shown below.

Accelerated aging in alkaline solution

TESTS AND RESULTS

Accelerated aging tests were made to evaluate the weight loss and the decrease of mechanical properties of glass and basalt fibers, in order to quantify their performance limits.

The fibers analyzed are basalt, E-glass, boron free E-glass and AR-glass.

The samples tested were unidirectional fabrics having the same surface density of (300 g/m2).

The standard test method used for the accelerated aging testing alkaline solution is the one described in

ASTM E 2098-00 The test consists of immersing the specimens in a 5% (50 g/l; pH=14) sodium hydroxide aqueous solution (in distilled water) for 28 days in tight containers in order to avoid any evaporation loss, at temperature of 22°C ± 3 °C and at a relative humidity of 50 ± 5%.

The specimens have to be straight during the entire test and the solution level is marked on the container, in order to monitor possible evaporation.

After conditioning, specimens are well rinsed in distilled water and dried for 7 days in the same controlled laboratory conditions.

The specimen’s weight was measured both before and after the aging in order to evaluate fibers weight loss.

E-glass 12 samples average value 3.87 % St. Dev. 0.57

Boron-free-E-glass 12 samples average value 3.00 % St. Dev. 0.94

AR-glass 6 samples average value 2.01 % St. Dev. 0.32

Basalt fiber 12 samples avarage value 1.04 % St. Dev. 0.44

Basalt fiber stability after 3 hour boiling H2O is 1.6%

Basalt fiber stability after 3 hour boiling 2N NaOH is 2.8%

Basalt fiber stability after 3 hour boiling 2N HCI is 2.2%

It is interesting to underline that E-glass fibers presented the greatest weight loss, of 3.87% (as average value), while basalt fibers presented the lowest one loosing only 1.04% of it`s volume after 28 days in pH=14 sodium hydroxide aqueous solution.

RockRebar® Nominal Diameter in inch, mm and #	Coil weight 200 meters = 650 feet	Weight per 39'6" length = (12 meters) lbs. 200 meter coil	Shear Strength Mpa & ksi	Guaranteed design tensile strength ASTM Mpa & ksi	Stiffness Young`s modulus = elastic modulus of elasticity GPa & ksi

0.170= 4mm	21.5 lb / 9.75 kg	1.2 lbs / 0.54kg	N/A	1059 153	92 13,334
0.25 = 6mm = #1	33.5 lb/ 15.2 kg	2.1 lbs / 0.953 kg	N/A	1015 147	89 12,908
.315 = 8mm = #2	52.5 lbs 23.8 kg	3.25 lb /1.474 kg	201 29	920 133	87 12,618
.393 = 10mm = #3	86 lbs / 39 kg	4.85 lbs / 2.2 kg	208 30	890 129	86 12,473
0.472 = 12mm =#4	143 lbs/ 64.8 kg	9.47 lbs / 4.3 kg	219 31	868 126	85 12,328
0.63 = 16mm = #5	N/A	18.37 lbs/ 8.33 kg	225 32	790 115	82 11,893

Notes on comparisons:
Coefficient Thermal Expansion

Concrete(10.15 x 10¯⁶/°C )

(5.7 x 10¯⁶/°F )

RockRebar®

(6.2 x 10¯⁶/°C )

(Lenght Wisex 3.5x10¯⁶/°F )

Steel (11.5 x 10¯⁶/°C )

(6.35 x 10¯⁶/°F )

yield strain of 60 series= 0.020

Notice RockRebar® always has slightly less thermal expansion than concrete.

Steel always has more allowing micro cracks and moisture intrusion

density of concrete is about 2.5g/cm3

RockStaples are 2.8g/3cm3 so they mix and stay mixed very well

No measurable creep if sustained load is less than 40% of tensile rating

Service life 260 years (min), tested under

alkaline PH13

Properties of the CBF itself

Average tensile strength of our continuous basalt fiber 675 thousand psi = (4657 MPa)

Average Elastic Modulus 15 million psi = (103 GPA)

Elongation at rupture of fiber 3.05%

Strain at break 0.0315 in 2.8 g/c

Water absorption 72 hours @ 65 C is 0.02%

Thermal heat transfer W/m degrees C 0.031- 0.034

Glass temperature @ formation of fiber 2650F 1454C

______________________________________

RockRebar®

Dimensional Stability at 200 C 392F 96%

density of is 1.9 (g/cm?)

Glass transition temperature of our preparatory epoxy adhesive matrix in production is 475F=(246°C)

Coefficient Thermal Expansion

(Lenght Wise 3.5 x 10¯⁶/°F )

(Across RockRebar 13.2 x 10¯⁶/°F)

(Lenght Wise 6.2 x 10⁶/°C )

(Across RockRebar 23.8 x 10¯⁶/°C)

Thermal conductivityW/m degrees C 0.036

Average strain at rupture for 1/2" (#4) in./in.(0.019)

Compressive strength more than = 500 MPa

72,520 PSI

Nominal Bond strength MPa = 19.8

Nominal Bond Strength PSI = 2872

Minimum embedded lengths should be not less than 20d_{b ( diameters of the rebar)}

SiO2 51.80

Al2O3 15.50

Fe2O3 10.30

MgO 7.13

CaO 8.59

Na2O 3.34

K2O 1.46

TiO2 1.38

P2O5 0.28

MnO 0.16

Cr2O3 0.06

Properties of Continuous Basalt Fiber material used in the production of *RAW®* concrete reinforcements RockRebar®, RockMesh®, RockStaples™ and RockStirrups®	Value
Tensile strength	4.84 GPa
Elastic modulus	89 GPa
Elongation at break	3.15%
Density	2.7 g/cm³

Material	Density (g/cm³)	Tensile strength (GPa)	Specific strength	Elastic modulus (GPa)	Specific modulus
Steel re-bar	7.85	0.5	0.0667	210	26.7
A-glass	2.46	3.31	1.35	69	28.0
C-glass	2.46	3.31	1.35	69	28.0
E-glass	2.60	3.45	1.33	76	29.2
S-2 glass	2.49	4.83	1.94	97	39.0
Silicon	2.16	0.206–0.412	0.0954–0.191
Quartz	2.2	0.3438	0.156
Carbon fiber (large)	1.74	3.62	2.08	228	131
Carbon fiber (medium)	1.80	5.10	2.83	241	134
Carbon fiber (small)	1.80	6.21	3.45	297	165
Kevlar K-29	1.44	3.62	2.51	41.4	28.8
Kevlar K-149	1.47	3.48	2.37
Polypropylene	0.91	0.27-0.65	0.297–0.714	38	41.7
Polyacrylonitrile	1.18	0.50-0.91	0.424–0.771	75	63.6
Basalt fiber	2.65	4.15–4.80	1.57–1.81	100–110	37.7–41.5

1. 1.Unrolling RockRebar® coils. Substantial kinetic energy is stored during the coiling process.Care must be exercised when uncoiling to prevent tangling and uncontrolled movement of ends. Coils are shipped with U clamps to allow uncoiling from the inside of the coil for safety reasons.

2..Cutting in the field. Bolt cutters are not recommended because they dull quickly and break themselves resulting in shattered steel. Cable cutters do work well on sizes 12 mm and smaller, however frequent sharpening is required. Hacksaws or abrasive wheels will work.The best choice is an inexpensive, 4” battery circular saw with common inexpensive diamond tile blade. They last a long time for the money. Bulk cuts may be done with chop saw, or gas saw with a masonry blade, but wet saw is preferred.

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2681 N.E. 4th AVE
POMPANO BEACH, FL 33064
ph: 954-803-9206
alt: 954-270-9000
bill@newrebar.com