Concrete burns are caused by chemicals in wet cement. If you get wet concrete on your skin, follow these steps.
Contact dermatitis Information
Burns Part 2: Special Cases — REAL First Aid
Abrasions
If your friends left you buried to your head in sand (see pic) would you be able to extricate yourself? - Quora
Health Hazards of Working With Cement in Construction
Burn Pictures: First, Second, and Third Degree
How to Treat Concrete and Cement Burns on the Skin
Chemical Burns: First Aid Treatment and Prevention Tips
Concrete Admixtures, 60% OFF
What would happen to your body if you got buried in cement up to your neck? - Quora
Poured my first concrete pad, received my first concrete burns
Cement Burns And Irritation – The Safety Brief