concrete expansion

Concrete expansion refers to the process where concrete increases in size as it cures and ages. This happens mainly because of chemical reactions between cement and water, called hydration, which create new compounds that take up more space. Additionally, concrete absorbs moisture from the environment, causing it to swell slightly. Temperature changes also influence expansion; concrete expands when warm and contracts when cold. Managing concrete expansion is important in construction to prevent cracking or damage, often by including control joints or using materials that accommodate these size changes, ensuring the structure remains durable and stable over time.