The typical concrete mix is made up of roughly 10% cement, 20% air and water, 30% sand, and 40% gravel. This is called the 10-20-30-40 Rule–though proportions may vary depending on the type of cement and other factors. Here are some basics of construction cement: Cement: A key ingredient in construction, cement is a chemical combination of calcium, silicon, aluminum, iron, and other ingredients. It improves the viscosity of concrete, which helps sand and gravels lock together. Concrete: A mixture of cement, sand, aggregates, and admixtures mixed with water. Concrete is a vital part of... Show more

The typical concrete mix is made up of roughly 10% cement, 20% air and water, 30% sand, and 40% gravel. This is called the 10-20-30-40 Rule–though proportions may vary depending on the type of cement and other factors.

Here are some basics of construction cement:
Cement: A key ingredient in construction, cement is a chemical combination of calcium, silicon, aluminum, iron, and other ingredients. It improves the viscosity of concrete, which helps sand and gravels lock together.
Concrete: A mixture of cement, sand, aggregates, and admixtures mixed with water. Concrete is a vital part of construction, contributing to its serviceability and durability.
Aggregates: An important component of concrete and cement. Aggregates can be found in concrete used for sidewalks, roads, bridges, railroads, airport runways, and more.
Water: One of the four basic components of concrete, along with cement, sand, and aggregates. Concrete absorbs around one-tenth of the water used in the world's industry.
Lightweight concrete: A popular choice in the construction industry, lightweight concrete has improved insulation, thermal properties, and a reduced mass.
Precast concrete: A popular method used in construction for building small retaining walls, highway barriers, and wide commercial spaces.
Reinforced concrete: A universal construction material used in one form or another for almost all structures, such as buildings, bridges, pavements, dams, retaining walls, tunnels, drainage and irrigation facilities, and tanks.
Fibre reinforced concrete: A cement-based composite material used in construction for its excellent flexural-tensile strength, resistance to splitting, impact resistance, and excellent permeability, and frost resistance. 

Show less