**Understanding Concrete: The Basics**

Concrete is a versatile building material made by mixing coarse aggregates (sand, gravel, crushed stone) with cement. Cement acts as the binding agent that holds everything together and hardens over time. While several cement types exist, Portland cement is the most common and is used in concrete, mortar, and plasters.

**Available Forms & Mixing**
You can buy concrete in:
– Pre-packaged bags (60 or 80 pounds)
– Bulk deliveries from concrete mixer trucks

Proper mixing is crucial for strong, consistent concrete. The process combines water, aggregate, cement, and any additives. Since concrete starts hardening once mixed, timing is critical—it must be placed while still workable. Some fast-setting varieties are available for urgent projects, while factory settings use drier mixes for precast products like concrete walls.

**The Curing Process**
After placement, concrete undergoes curing—a gradual hardening process. It typically reaches 90% of its strength within four weeks but can continue strengthening for up to three years. Maintaining moisture during early curing enhances strength. Techniques like:
– Spraying sealant films to lock in water
– Ponding (submerging in water)
– Plastic wrapping

These methods help concrete develop maximum durability and performance over time.