Cement is a binding agent that is used in the building industry to bind together bricks, stones, and other building materials. It is made from a mixture of limestone and clay and is a basic ingredient in concrete, a composite material, made of cement, water, sand, and gravel.
Concrete is used to make sidewalks, driveways, and other structures.
Cement is not often used independently, generally, it is mixed with other materials and water for a range of applications.
Cement mix and mortar mix are ideal for a variety of applications including:
General purpose cement is purposed for use in concrete, mortars, renders, screeds and grouts.
Procem (CEM I Portland cement) should be utilised when tackling more specialised structural concrete applications.
As for sulfate-resistant applications, we would suggest using Sulfacrete.
Fly ash is advantageous when mixing fresh concrete as it improves workability; refining the consistency and paste flow behaviour.
It also reduces water demand by approximately 10%.
An air entraining agent and mineral admixture (such as Everbuild Mortar Admix) are added to this cement composition to enhance plasticity and prevent cracking.
Calcium aluminate cement (otherwise referred to as high-alumina cement) is produced by fusing a lime-containing material with an aluminous material to create calcium aluminates.
A sustainable and eco-friendly alternative to concrete that meets the functional performance capabilities of standard Portland cement.
Its production process involves and optimises recycled materials, lowering raw material use, water, and energy consumption, resulting in more sustainable construction material.
Mortar is made by mixing cement, lime and sand. The proportions of these ingredients vary depending on the type of mortar you're making, but the basic ratio is one part cement to three parts sand.
To mix, you'll need:
As ever, we recommend donning the appropriate PPE: a respiratory mask, goggles and gloves, at the very least.
The manufacturing process of cement begins with mining limestone and other raw materials. After quarrying, the rock is crushed.
The crushed rock is then combined with other minerals, like clay and iron ore, in a cement kiln. Cement kilns are most often fuelled by coal, however, the use of alternative fuels in cement kilns is now widespread and increasing.
The resulting substance of heating these raw materials at high temperatures is called clinker. Clinker is ground up by cement plants into a fine powder and mixed with gypsum to produce cement.
Hydraulic cement, the most popular of both classifications, is the most favoured material due to the fact that it is easily workable and dries quickly.
The ingredients—a mixture of limestone, clay and gypsum—are combined at high temperatures to manufacture a product that sets and hardens rapidly.
While the first form of cement invented was non-hydraulic, it is not as practical or convenient for most applications.
This type of cement includes lime, gypsum plasters and oxychloride, which means that it does not set when exposed to water like hydraulic cement. In fact, this kind of cement needs dry conditions to set at all.
Portland Cement Association is a non-profit organization that promotes the use of Portland cement, the most common type of cement used in concrete production.
PCA conducts and sponsors concrete research, and plays a role in setting cement manufacturing standards.