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Grout is used to fill voids, cracks, and improve bonding in concrete.

M20 has a standard mix of 1 part cement, 1.5 parts sand, and 2 parts aggregate.

Teak is a durable, termite-resistant hardwood used extensively in furniture and construction.

Metals like iron and aluminum are structural materials; alloys improve strength and corrosion resistance.

Steel is primarily made by alloying iron with carbon to improve strength and hardness.

Stainless steel resists corrosion due to the presence of chromium and often nickel.

Nominal size includes mortar thickness for planning and layout purposes.

Laterite, marble, and granite are construction stones; slate pencil is not used structurally in buildings.

Stones are classified by their formation (igneous, sedimentary, metamorphic) and composition (calcareous, argillaceous, siliceous).

Due to their appearance and durability, marble and granite are commonly used in surface finishing and decoration.

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