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MODULE 3 – BREACHING-BREAKING-CUTTING- BURNING
www.fema.govMODULE 3 – BREACHING-BREAKING-CUTTING- BURNING SM 3 3 Types of concrete nPeople often misuse the word cement and concrete. Cement is a fine gray powder, and once mixed with water, sand, gravel or stone becomes concrete. The strength and durability of concrete depend chiefly on the amount of water used. If too much water is used the cement ...