PU FLEX-2, is a water-reactive grout specifically designed for injection into leaking concrete, masonry or brickwork, to stop the flow of water. Commencement of the chemical reaction with water can be adjusted by the addition of a variable quantity of CATALYST.
PU FLEX-2 forms an excellent barrier against water seepage caused by hydroscopic pressure, has good chemical resistance and is non-toxic once set. By restraining the natural expansion created by this reaction, a strong closed-cell rigid foam is formed, providing a permanent barrier to the ingress of water.
PU FLEX-2 is a low viscosity MDI-based isocyanate, which transforms into a semi-flexible polyurethane foam when in contact with water. The reaction time is adjusted by the addition of CATALYST.
|Appearance||Light Brown||Translucent||Dosage (%)||Time (s)||Time (s)|
|Viscosity (25˚C)||120 cps||15 cps||5||56||145|
|Flashpoint||> 210˚C||> 150˚C||10||46||95|
|Elongation in cured form||40%|
|Shelf life (unopened)||~12 months||~12 months|
PU FLEX-2 can be injected by electric-drilled operated injection pump or hand-held manual grout pump together with the required packers. Technical experienced in handling equipment and assessment of the site condition for suitable application should be necessary. It is recommended that pressurized grouting at the same position for two times to ensure no water leakage. (please refer to method statement provided).
STORAGE & HANDLING
Store in cool dry areas. Temperature above 50˚C may cause premature formation of insoluble solids. Good housekeeping is essential in areas where chemical spillage is likely to occur. Partly used drums/pails should be tightly sealed to prevent ingress of moisture. To increase the material life expectancy, partially used drum/pail should be filled with Nitrogen gas and sealed tightly to prevent contamination.
HEALTH & SAFETY
Avoid contact with skin, eye and avoid breathing vapor. Wear gloves, goggles and full clothing when handling with raw materials. Keep away from children. Provide adequate ventilation in confined spaces. If contact with skin occurs PU FLEX-2 should be removed with soap removing cream followed by washing with soap and water. DO NOT use solvent. Should poisoning occur, consult a physician in all cases. Should poisoning occur, call doctor immediately, DO NOT induce vomiting, drink plenty of water or milk. MSDS shall be available upon request.
PU FLEX-2: 20kg, 25kg and 225kg/pail/drum
CATALYST: 1 kg, 5kg and 25kg/pack/pail
EXAMPLES OF CONSTRUCTION WORK