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Aggregate is the sand and stone (jelly/metal) that make up most of concrete’s volume — fine aggregate is sand; coarse aggregate is crushed stone.
Materials · Also: Jelly, Metal, Coarse aggregate, Fine aggregate
Aggregate is the sand and stone (jelly/metal) that make up most of concrete’s volume — fine aggregate is sand; coarse aggregate is crushed stone.
Plain-language explanations for planning and learning. Local codes, consultant advice and contract documents take precedence over glossary summaries.
Coarse aggregate (often 10–20 mm or 20–40 mm) and fine aggregate (sand / M-sand) are proportioned with cement and water for a specified mix. Size, grading, silt content and moisture affect strength and workability. Quotes are commonly ₹/m³ and vary with crusher distance. Do not swap sizes casually in structural concrete without mix guidance.
Example: For 10 m³ of M20 concrete, coarse aggregate volume is a large share of the mix — use the concrete or aggregate calculator with your mix preset rather than a single national thumb-rule.
| Unit | Notes |
|---|---|
| m³ | Bulk purchase and mix volume |
| mm | Nominal maximum size (e.g. 20 mm) |
Mortar
Mortar is a workable paste — typically cement and sand with water — that bonds bricks/blocks and is used for plastering and bedding.
RCC
RCC (Reinforced Cement Concrete) is concrete strengthened with steel bars so it can resist both compression and tension in beams, slabs, columns and footings.
PCC
PCC (Plain Cement Concrete) is concrete without steel reinforcement, often used as a leveling or bedding layer under foundations and floors.
Each Varnarc glossary term includes a simple definition, a technical explanation, a worked example, units where relevant, and links to calculators or materials so you can take the next action. Thin one-line dictionary stubs are not published.
Glossary 2026.08.1