The science that studies the composition, structure and properties of matter. Chemistry is used in structural rehabilitation to evaluate the corrosion of materials.

Examples of chemistry applications in the rehabilitation of concrete and steel structures:

• Chemical study can help determine the cause of corrosion of the structure, which is necessary to design the necessary rehabilitation measures.
• The chemical study can help assess the vulnerability of the structure to corrosion, which is necessary to determine if the structure needs to be reinforced.
• The chemical study can help design the necessary rehabilitation measures to protect the structure from corrosion.