Although composition and properties of materials used for making concrete are discussed. Here it is useful to define concrete and the principal concrete-making components.
Concrete is a composite material that consists essentially of a binding medium within which are embedded particles or fragments of aggregate. In hydraulic-cement concrete, the binder is formed from a mixture of hydraulic cement and water. The self loading mixer can mix concrete evenly. It is a multi-functional concrete mixer.
Aggregate is the granular material, such as sand, gravel, crushed stone, crushed blast-furnace slag, or construction and demolition waste that is used with a cementing medium to produce either concrete or mortar. The term coarse aggregate refers to the aggregate particles larger than 4.75mm, and the term fine aggregate refers to the aggregate particles smaller than 4.75 mm but larger than 75μm. Gravel is the coarse aggregate resulting from natural disintegration by weathering of rock. The term sand is commonly used for fine aggregate resulting from either natural weathering or crushing of stone. Crushed stone is the product resulting from industrial crushing of rocks, boulders, or large cobblestones. Iron blast-furnace slag, a by-product of the iron industry, is the material obtained by crushing blast-furnace slag that solidified by slow cooling under atmospheric conditions. Aggregate from construction and demolition waste refers to the product obtained from recycling of concrete, brick, or stone rubble. We also have many types of pan mixers for sale.
Mortar is a mixture of sand, cement, and water. It is like concrete without a coarse aggregate. Grout is a mixture of cementitious material and aggregate, usually fine aggregate, to which sufficient water is added to produce a pouring consistency without segregation of the constituents. Shotcrete refers to a mortar or concrete that is pneumatically transported through a horse and projected onto a surface at high velocity.