Concrete Repair & Strengthening Systems
KingInject 80PU2®
Elastic polyurethane resin based injection system.
Viscosity
125 - 150 mPa.s @ 25ºC
Shore A hardness
DIN 53505 60 – 90
DIN 53505
Packaging
Pack
Standards
3 cited
AASHTO T237 · ASTM D638
Overview
KingInject 80PU2 is a two component; low viscosity polyurethane injection system for elastic sealing of cracks in wet or dry conditions, in concrete structures and masonary. KingInject 80PU2 is also used in conjunction with KingInject 80PU1 for permanent and effective sealing of live cracks in wet conditions.
Applications
- For injection of wet or dry cracks in all types of structural concrete elements, masonry, and brickwork
Advantages
- Solvent and filler free
- Excellent bond strength to concrete, brickwork, and masonry in wet and dry conditions
- Low viscosity polyurethane system, formulated to allow for small cracks penetration
- Outstanding resistance to hydrostatic pressure
- Good flexibility
- Cures to form permanent and impermeable elastic seal
- Exhibits good chemical resistance
- Non-toxic, suitable for use in contact with potable water
- STANDARDS KingInject 80PU2 is suitable for use in contact with potable water when tested in accordance to BS 6920
Technical Properties
| Property | Value | Standard |
|---|---|---|
| Mixed density | 1.1 ± 0.05 g/cm³ @ 25ºC | — |
| Viscosity | 125 - 150 mPa.s @ 25ºC | — |
| Pot life | 35 – 45 min @ 25ºC 15 – 20 min @ 40ºC | — |
| Gel time | 40 – 50 min @ 25ºC 18 – 25 min @ 40ºC | — |
| Tensile strength | ≥ 1.2 MPa @ 7 days | ASTM D638 |
| Elongation at break | ASTM ≥ 80% @ 7 days D638 | — |
| Modulus of elasticity | DIN: 4.0 – 4.5 MPa 53457 | — |
| Shore A hardness | 60 – 90 | DIN 53505 |
| Slant shear strength | ≥ 1.5 MPa @ 7 days () INJECTION HOLES DRILLING & FIXING Holes are drilled to install mechanical packers. Always try to allocate steel re-bars and conduit before drilling. Using high quality rotary hummer drill, and depending on packer diameter used, a suitable drill pit used, usually 13 mm or 16 mm diameter mechanical packers are used. The angle which drilling should be is 45⁰C or less to the surface and toward the crack. Depth of the drill holes intersecting the crack should be somewhat close to middle of structure, if possible. Holes greater than 45 cm are not required even if the concrete being repaired is more than 90 cm thick. Holes should always be staggered from one side of the cracks to the other. | AASHTO T237 |
| Spacing | distance between drilled holes usually varies from approximately 15 – 50 cm according to width of the cracks (30 cm is commonly used). Yet the wider the cracks, the further apart are drill holes. | — |
Standards & Approvals
AASH
AASHTO T237
ASTM
ASTM D638
DIN
DIN 53505
ISO
ISO 9001 · 14001 · 45001Quality & EHS
Usage & Packaging
Packaging
KingInject 80PU2 is available in 1.1 kg (1 litre) and 5.5 kg (5 litre) packs.
Storage
Shelf life is 1 year when stored under cover, out of direct sunlight and protected from extremes of temperature
Pack formats
Pack