PU200
DESCRIPTION:
AT-PU200 is a hydrophobic polyurethane based foam resin used for injection into concrete structures exhibiting water seepages. AT-PU200 is a single component hydrophobic resin that reacts to form a closed cell, semi-rigid, non corrosive foam when it comes in contact with water. AT-PU200 provides an extended working time to ensure complete penetrability into the elements being injected without premature foaming.
USES:
- AT-PU200 is used to stop water seepages through concrete structures such as basement retaining walls, water supply facilities, tanks, cooling towers, sewage treatment plants, lift/elevator wells, slab/raft construction joints. AT-PU200 is injected using appropriate high pressure injection equipment from the “negative side”.
ADVANTAGES:
- Non corrosive
- Extended working time
INJECTION PROCESS: Identify the area to be injected. Install injection packers of suitable diameter and length. Ensure injection packers are tightly installed to avoid packer failure during injection process. If required, seal packers using quick setting cement or epoxy based putty. Feed the resin into the pump and commence injection. Injection pressure shall be governed by the type of element, packer spacing and other factors. For injection below raft slab, grade slab and retaining walls inject in intermittent batches and observe effect. Avoid large volume injections in short period.
TECHNICAL DATA:
| MATERIAL DESCRIPTION | Single component solvent free polyurethane injection resin curing to a semi hard form |
| APPEARANCE | Dark brown liquid |
| VISCOCITY | ~ 140.0 mPa.s (@ 23ºC) |
| DENSITY | ~ 125.0 g/cm³ (@ 23ºC) |
| VOLUME EXPANSION | Up to 20 times (Resin : Water = 10 : 1) @ 25ºC |
| REACTION TIME | Up to 300 seconds (depending on temperature) |
| POT LIFE | Up to 1.0 hrs @ 23ºC (surface film that forms upon humidity contact to be discarded and not mixed in) |
| APPLICATION TEMPREATURE | › 5ºC (substrate temperature during injection) |
| APPLICATION EQUIPEMENT | SD-1L or suitable single component positive displacement resin injection pump capable of developing required injection pressures. Non-return injection packers. |
PACKAGING & STORAGE:
- AT-PU200 is available in the following pack:
- 10 kg
- Shelf life is 6 months in sealed containers as provided
- Keep containers sealed and away from heat and cold in a well ventilated area (5ºC to 30ºC)
HEALTH & SAFETY:
- Protect hands with rubber gloves and eyes with goggles.
- Accidental splashes to the skin or eyes must be rinsed immediately with clean water.
- Store in well-labeled containers.