Construction chemicals are primarily categorized into three major groups: construction coatings, adhesives/sealants, and concrete admixtures. Among these, construction coatings are the most widely applied and consumed in the largest volumes.
Construction Coatings
Used to protect and decorate building surfaces, common types include:
Interior wall coatings and exterior wall coatings
Floor coatings (suitable for substrates such as concrete and brick)
Waterproofing coatings (used for concrete, gypsum board, etc.)
Anti-corrosion coatings (frequently used for steel structures and cement-based substrates)
Anti-graffiti coatings (often used for the protection of urban walls)
Adhesives and Sealants
Used for bonding materials together and sealing gaps; they are classified into:
Structural Adhesives: Used for long-term load-bearing applications, such as curtain wall installation
Non-structural Adhesives: Used for light-load bonding applications, such as floor coverings and wallpaper
Common chemical compositions include silicones, polyurethanes, acrylates, epoxy resins, etc.
Sealants are used to join materials with differing coefficients of thermal expansion-such as weather-resistant sealants and glass sealants-and are widely utilized in doors, windows, and curtain walls.
Concrete Admixtures
Added during the concrete mixing process, typically at a dosage not exceeding 5% of the cement's weight. Their primary functional classifications are as follows:
Improving Workability: Water reducers, air-entraining agents, pumping aids
Regulating Setting and Hardening: Retarders, early-strength agents, accelerators
Enhancing Durability: Waterproofing agents, corrosion inhibitors, air-entraining agents
Improving Other Properties: Expansion agents, antifreeze agents, coloring agents, etc.
