Concrete is made of cement, water, sand and rock chips. Chemicals and other materials are added to aide in the reinforcement and distribution of the product.
Concrete is used more than any other man-made building material in the world. Through a long history Ellingford Brothers' concrete is in most of the foundations and buildings here in Southwest Wyoming.
There are many different types of concrete available and many things are added to the mix in order to acheive the best results.
Modern concrete uses mix designs that may be very complex.
The design begins by specifying desired "workability" as defined by a given slump, "durability" requirements taking into consideration the weather exposure conditions (freeze-thaw) to which the concrete will be exposed in service, and the required "28 day compressive strength" as determined by properly molded standard-cured cylinder samples.
Many factors need to be taken into account, from cost of the various possible additives and aggregates, to the trade offs between easy mixing and placement and ultimate performance.