SikaFix® HH LV
LOW-VISCOSITY, EXPANDING, FLEXIBLE AND POTABLE WATER COMPATIBLE POLYURETHANE INJECTION GROUT
SikaFix® HH LV is a one-component, high solids and drinking water compatible hydrophobic (water-reacted) polyurethane injection grout of low viscosity. It will stop flowing water and displace it from cracks and voids, replacing the water with a flexible and closed cell foam. SikaFix® HH LV can be used alone or with SikaFix® HH LV Accelerator to halt the passage of water through joints or defects in concrete and masonry and provide an effective seal.
- Low-viscosity permits injection into narrow, hair-line cracks
- Hydrophobic; only a small amount of water is needed for reaction
- Expands up to 30 times in volume depending upon quantity of accelerator used
- The use of an accelerator permits work to take place at lower temperatures
- Tenacious adhesion to both wet and dry surfaces
- Excellent elongation creates tight seal in moving cracks
- Contains no volatile solvents
- ANSI/NSF Standard 61 approved for contact with potable water
- Non-corrosive
Usage
- To stop water under hydrostatic pressure leaking through joints and cracks in concrete and masonry.
- Fills and seals voids in defective (honeycombed) substrates, preventing the passage of water.
- In limestone tunnels and dams, around pipe intrusions, drinking and wastewater tanks, reservoirs, sewers, manholes and utility boxes where the passage of water must be stopped.
Advantages
- Low-viscosity permits injection into narrow, hair-line cracks
- Hydrophobic; only a small amount of water is needed for reaction
- Expands up to 30 times in volume depending upon quantity of accelerator used
- The use of an accelerator permits work to take place at lower temperatures
- Tenacious adhesion to both wet and dry surfaces
- Excellent elongation creates tight seal in moving cracks
- Contains no volatile solvents
- ANSI/NSF Standard 61 approved for contact with potable water
- Non-corrosive
Packaging
SikaFix® HH LV: 18.9 L (5 US gal.) pail
SikaFix® HH Accelerator: 473 mL (16 US fl. oz) can, 8/case
SikaFix® Pump Flush: 18.9 L (5 US gal.) pail
Colour
SikaFix® HH LV: Amber
SikaFix® HH Accelerator: Transparent liquid
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization - Material Ingredients
Shelf Life
1 year in original, unopened packaging.
Storage Conditions
Store in a dry area between 4 and 32 °C (40 and 90 °F) using original re-sealable containers. Do not allow product to freeze. Low temperatures will affect viscosity. To minimize this effect, store the product at room temperature for a minimum period of 24 hours prior to use. Material must be preconditioned to temperatures ranging between 16 °C and 32 °C (60 °F and 90 °F) before use. If site temperatures are extremely low, heat bands or heated water baths may be used on the pails, before and during use to maintain the products temperature. Immerse only the lower 2/3 of the pails. Avoid splashing water into open containers. Do not use if ambient temperature is below 4 °C (40 °F).
Density
| Uncured | Cured | SikaFix® HH Accelerator |
| 1.15 @ +23 °C (74 °F) | 0.064 kg/L (4 lb/ft3 ) | 0.95 @ +23 °C (74 °F) |
Specific Gravity:
| Cured SikaFix® HH LV (+SikaFix® HH Accelerator) | 1.8 kg/L (4 lb/US gal.) |
Flash Point
| Uncured SikaFix® HH LV > 93 °C (> 200 °F) SikaFix® HH Accelerator 102 °C (216 °F) | (ASTM D93) (ASTM D3278-96) |
Viscosity
| Uncured SikaFix® HH LV | SikaFix® HH Accelerator |
| 500 cps @ +23 °C | 25 cps @ +23 °C |
Tensile Strength
| 0.02 MPa (29 psi) | (ASTM D638) |
Lap Shear Strength
| 0.12 MPa (17 psi) | (ASTM C273) |
Expansion
| Shrinkage: <1 % | (ASTM D1042) |
| Absorption: <1% | (ASTM D2842) |
Application
Mixing Ratio
Dosage:
SikaFix® HH Accelerator
1 - 3 % Accelerator 10 - 30 mL (1.3 - 3.9 US fl. oz) can per L
(33.8 US fl. oz) of grout (typical)
Ambient Air Temperature
Maximum: +82 °C (180 °F)
Substrate Temperature
Maximum: +82 °C (180 °F)
Curing Time
| Temperature | Reaction/Gel Time (Accelarator % dosage) |
| +10 °C (50 °F) | 3 min 10 s (2.5 %) 12 min 0 s (0 %) |
| +20 °C (68 °F) | 1 min 50 s (2.5 %) 6 min 15 s (0 %) |
| +25 °C (77 °F) | 1 min 15 s (2.5 %) 5 min 10 s (0 %) |
| +30 °C (86 °F) | 1 min 05 s (2.5 %) 4 min 0 s (0 %) |
Based on a 2.5 % SikaFix® HH Accelerator dosage, corresponding with the recommended 18.9 L : 473 mL ratio of SikaFix® HH LV to SikaFix® HH Accelerator, and a 0 % dosage, corresponding with no SikaFix® Accelerator added. SikaFix® HH Accelerator must be agitated by shaking the container prior to use.
Yield
SikaFix® HH LV
1 L (33.8 US fl. oz) grout = approx. 25 L (6.6 US gal.) foam (typical free expansion)
1 L (33.8 US fl. oz) grout = approx. 2 - 5 L (0.5 - 1.3 US gal.) foam (typical contained expansion)
Dependent upon quantity of Accelerator used and variation in crack/void configuration, injection conditions and end use will influence the yield
SUBSTRATE PREPARATION
Drill appropriate diameter holes based on packer type/diameter being used along the side of the crack at a 45° angle to intersect the crack midway through the substrate. These holes should be drilled alternately on opposite sides of the crack at approximately 150 - 600 mm (6 - 24 in) centres depending upon the crack width. This spacing can be adjusted to suit specific applications where necessary. Install injection packers into the drilled holes and tighten or position and secure injection ports.
It is always necessary to flush the drilled holes with water to remove debris and drill dust from the holes and crack. This will also insure that the crack is wet enough to react with the grout when it is injected into the crack.
When the crack is contaminated on the outside, it will be necessary to clean the surface so that the crack can be located exactly. If the crack is wide or high water flows are encountered, it will be necessary to seal the surface of the crack with a surface sealing material (SikaSet® Plug, Sikadur®-31 Hi Mod GelCA or a preformed open cell polyurethane foam cord saturated with SikaFix® HH LV: select material compatible with potable water where necessary). The surface sealing can be carried out before or after drilling injection holes, depending on the particular situation.
MIXING
Prior to injection, SikaFix® HH LV should be thoroughly agitated by either vigorously shaking the 18.9 L (5 US gal.) pail or by mixing with a low-speed drill (200 - 300 rpm) and Jiffy or ‘bung’ type paddle until a uniform consistency is produced. If mixing, scrape the sides and bottom of the pail to ensure a complete mix is achieved.
Prior to using SikaFix® HH Accelerator, the can should be shaken vigorously as the contents may have settled during storage. For normal use, the grout should not be used with more SikaFix® HH Accelerator than the amount recommended in the Curing Time data. The grout should never be used with a SikaFix® HH Accelerator content exceeding 5 %. Excess acceleration will cause uncontrolled expansion which is prone to shrinkage.
Pour the desired quantity of SikaFix® HH LV into a clean, suitably sized mixing vessel and where SikaFix® HH LV Accelerator is being used, measure the amount of accelerator required and add into the SikaFix® HH LV and stir until adequately mixed. It is advisable to mix and inject just a part of the unit initially (1L [2 pints] would be approximate) to determine the rate of resin travel and confirm how much product can be used within its pot life.
CLEAN UP
Use SikaFix® Pump Flush, a non-flammable solvent, to clean tools, lines and equipment of uncured product. Cured material can only be removed mechanically.
