Product Description
STRUX® 85/50 synthetic macro fiber reinforcement is a unique form of high strength, high modulus synthetic macro reinforcement that is distributed throughout the concrete matrix. It consists of synthetic macro fibers 50 mm (2 in.) in length with an aspect ratio of 85 that have specifically been designed to ensure ease of use and rapid dispersion in concrete. STRUX® 85/50 is used in concrete to improve the material properties including toughness (post crack energy absorption), impact and fatigue resistance.
Product Advantages
STRUX® 85/50 has been designed to provide:
- Safety
- Ductility
- Durability
- Crack Control
- Energy absorption
- Stain free concrete surfaces
- Quick, easy and safe application
- An efficient and effective secondary reinforcement alternative
Uses
STRUX® 85/50 may be used in a variety of ready mix, precast and shotcrete applications including: bridge decks, overlays, whitetopping, pipes, vaults, septic tanks, tunnel linings, slope stabilization, and swimming pools.
Advantages
When added to shotcrete and concrete, the primary benefit of STRUX® 85/50 is a significant improvement in flexural toughness as outlined in Table 1.
Addition Rates
STRUX® 85/50 addition rates are dependent on the specific application and desired properties and will typically vary between 3.0 to 9.0 kg/m3 (5.0 to 15.0 lb/yd3).
Mix Design and Mixing Requirements
The utilization of fibers generally requires the use of a superplasticizer such as ADVA® to restore the required workability to fiber reinforced concrete.
STRUX® 85/50 may be added to concrete at any point during the batching or mixing process. STRUX® 85/50 should be added at a maximum rate of one bag every 30 seconds. After fiber addition the concrete should be mixed at the recommended mixing speed for a minimum of 70 revolutions to ensure adequate fiber dispersion.
Please contact your GCP representative with any questions.
Compatibility
STRUX®85/50 is compatible with all admixtures. Their action in concrete is mechanical and will not affect the hydration process of the cement and therefore will not affect the compressive strength. Each liquid admixture should be added separately to the concrete mix.
Packaging
STRUX® 85/50 is available in 4.5 kg (10 lb) bags.
U.S. Patent No. 6,569,525
U.S. Patent No. 6,569,526
U.S. Patent No. 6,758,897
Table 1
Typical Flexural Strength and Toughness results that can be expected from a 40 MPa (5800 psi), air entrained, concrete at 28 days
STRUX® 85/50 | DEFL. @ 1 IN. CRACK | SPECIMEN CROSS SECTION | MAX. LOAD | FLEXURAL STRENGTH | ASTM C 1018-97 TOUGHNESS INDICES | ASTM C 1018-97 RESIDUAL STRENGTH FACTORS | JSCE® | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DOSAGE RATE | (mm) | Base (mm) | Height (mm) | (kN) | (MPa) | I5 | I10 | I20 | I40 | I60 | R5,10 | R10,20 | R20,30 | R30,60 | R10,50 | (MPa) |
Control 0.25% 0.50% 0.75% |
0.038 0.037 0.038 0.039 |
102.1 101.8 102.0 102.1 |
102.0 103.5 103.8 103.7 |
19.20 18.60 19.30 20.20 |
5.50 5.19 5.37 5.60 |
2.88 3.15 3.51 3.49 |
3.94 4.76 5.63 5.72 |
4.89 7.12 9.24 10.00 |
5.30 9.17 12.60 14.36 |
5.73 15.37 23.07 27.93 |
21.3 32.1 42.4 44.5 |
9.5 23.6 36.1 42.8 |
4.1 20.5 33.6 43.6 |
1.4 20.7 34.9 45.2 |
4.3 21.4 34.7 44.2 |
0.35 1.44 2.42 3.07 |
STRUX® 85/50 | DEFL. @ 1 IN. CRACK | SPECIMEN CROSS SECTION | MAX. LOAD | FLEXURAL STRENGTH | ASTM C 1018-97 TOUGHNESS INDICES | ASTM C 1018-97 RESIDUAL STRENGTH FACTORS | JSCE® | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DOSAGE RATE | (mil) | Base (in) | Height (in) | (lbf) | (psi) | I5 | I10 | I20 | I30 | I60 | R5,10 | R10,20 | R20,30 | R30,60 | R10,50 | (psi) |
Control 0.25% 0.50% 0.75% |
1.50 1.46 1.50 1.54 |
3.98 3.97 3.98 3.98 |
3.98 4.04 4.05 4.04 |
4316 4181 4339 4541 |
798 753 779 812 |
2.88 3.15 3.51 3.49 |
3.94 4.76 5.63 5.72 |
4.89 7.12 9.24 10.00 |
5.30 9.17 12.60 14.36 |
5.73 15.37 23.07 27.93 |
21.3 32.1 42.4 44.5 |
9.5 23.6 36.1 42.8 |
4.1 20.5 33.6 43.6 |
1.4 20.7 34.9 45.2 |
4.3 21.4 34.7 44.2 |
51 209 351 445 |
* Japanese Society for CiviI Engineering
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Last Updated: 2018-12-12
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