Cement & Concrete Basics FAQs (2024)

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Frequently Asked Questions

• What is the difference between cement and concrete?

• How is portland cement made?

• Are there different types of portland cement?

• What are blended cements?

• What is portland-limestone cement?

• Is there a universal international specification for portland cement?

• How do you control the strength of concrete?

• What is alkali-silica reactivity (ASR)?

• How do you protect a concrete surface from aggressive materials like acids?

• What are the decorative finishes that can be applied to concrete surfaces?

• How do you remove stains from concrete?

• What is 3,000 pound concrete?

• What does 28-day strength mean?

• Will concrete harden under water?

• Why do concrete surfaces flake and spall?

• How can you tell if you're getting the amount of concrete you're paying for?

• Why does concrete crack?

• What are recommended mix proportions for good concrete?