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2. List of polyurethane applications - Wikipedia

   en.wikipedia.org/wiki/List_of_polyurethane...

   Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...

3. Concrete leveling - Wikipedia

   en.wikipedia.org/wiki/Concrete_leveling

   Concrete leveling with foam injection. Foam leveling uses polyurethane in an injection process. [7] A two-part polymer [8] is injected through a hole less than one inch in diameter. Although the material is injected at a higher pressure than traditional cementitious grouts, the pressure is not what causes the lifting. The expansion of the air ...

4. Spray foam - Wikipedia

   en.wikipedia.org/wiki/Spray_foam

   1.8-2 pound polyurethane foam has the highest R-value of readily available spray foam insulation used in homes and buildings. [5] Polyurethane is a closed-cell foam insulation material that initially contains a low-conductivity gas in its cells. [6]

5. Texas Grandmother Accused of Munchausen by Proxy Abuse of ...

   www.aol.com/texas-grandmother-accused-munchausen...

   A Texas grandmother is accused of having an unnecessary gastric feeding tube placed into her granddaughter. Lisa Campbell-Goins is charged with unlawful restraint, exploitation of a child and ...

6. New HIV prevention drug could reach poorest countries ... - AOL

   www.aol.com/news/hiv-prevention-drug-could-reach...

   A new long-acting preventive HIV drug could reach the world’s poorest countries by the end of 2025 or early 2026, a global health official told Reuters on Tuesday. The ambition is to start ...

7. Concrete sealer - Wikipedia

   en.wikipedia.org/wiki/Concrete_sealer

   They require a dry, clean surface during application to gain adhesion. Topical sealers may alter the coefficient of friction which can make substrates slick when wet – a condition that can be remedied by adding anti-skid materials. Life span is generally 1-5 years, although high-end epoxy/urethane systems can last significantly longer.

8. NYC’s drug-user supply vending machine — with crack ... - AOL

   www.aol.com/nyc-drug-user-supply-vending...

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9. Concrete degradation - Wikipedia

   en.wikipedia.org/wiki/Concrete_degradation

   The filling of cracks, fissures or voids in concrete for structural purposes (restoration of strength and load-bearing capability), or non-structural reasons (flexible repairs where further movement is expected, or alternately to resist water and gas permeation) typically involves the injection of low viscosity resins or grouts based on epoxy ...