Essential Construction Materials: Stone, Ceramics, and Glass

Geological and Material Definitions

Earth's crust: The hard outer surface of the planet.
Rust: A reddish-brown material formed by oxidation.
Wedges: Objects with a triangular shape.
Temper: An additive that increases the durability of materials.
Crush: To press or break into small pieces.
Flux: An additive that reduces the melting point.
Breakwaters: Walls built from stone to protect shorelines.
Metamorphic rock: Rock transformed by heat and pressure.
Igneous rock: Rock formed from cooling magma.
Exothermic: A process producing heat.

Stone Processing and Aggregates

Stone blocks undergo quarrying and processing, including cutting, shaping, and polishing. Aggregates are processed through cleaning, crushing, and sorting.

• River rock: Aggregates sourced from riverbeds.
• Crushed rock: Features irregular edges that provide increased friction.
• Natural stone types: Limestone, marble, granite, slate, and tuff.

Binders and Artificial Stone

Binders like plaster, lime, and cement are essential in construction to hold materials together. Mortars are categorized as hydraulic or non-hydraulic.

Artificial stone is manufactured using binders and materials such as fiber, gravel, and sand. Concrete is a mixture of gravel, sand, water, and cement that sets into a rock-like material. Other examples include fiber cement, hempcrete bricks, and terrazzo.

Ceramic Classifications

Coarse Ceramics

• Terracotta: Made with ordinary clay; matte red, hard, rough, and fragile.
• Earthenware: A mixture of white clay, silica, and feldspar; fine, smooth, and hard.
• Refractory ceramics: Made with baked clay and metal oxides; resistant to temperatures up to 3000°C.

Fine Ceramics

• Stoneware: Made from refractory clay; glass-like appearance, compact, and hard enough to scratch glass.
• Porcelain: Made with kaolin (white clay); transparent, translucent, acid-resistant, and very hard.

Glass Forming Techniques

• Automatic blow moulding: Used for bottles, jars, bulbs, and glasses.
• Glass casting: Used for ashtrays, containers, and glass bricks.
• Stretching: Used for plate glass (2mm–3mm) for windows and mirrors.
• Floating: Used for plate glass (3mm–18mm).
• Calendering and lamination: Used to create safety (laminated) glass.