Is concrete toxic to humans?

Related questions

1. Is Portland cement a mortar?
2. Can you mix cement without sand?
3. Who uses cement?
4. Do you need to mix sand with cement?
5. Whats stronger cement or concrete?
6. What are the uses of Portland cement?
7. Is Type S mortar stronger than type N?
8. What is Type GU cement?
9. Can you pour concrete over cracked concrete?
10. Do you have to add sand to Portland cement?

Tags

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2. #useful
3. #naturally
4. #proper
5. #occurring
6. #presence
7. #concrete
8. #substances
9. #should
10. #including
11. #concerns
12. #radioactivity
13. #health
14. #cause
15. #handled
16. #additives
17. #unwanted
18. #protective
19. #usually
20. #alkaline
21. #equipment
22. #toxicity
23. #always