Concrete is the most used man-made material on the planet, and has been  an integral  building element since ancient times. The use of concrete in buildings built during the Roman Empire, which includes the aqueducts and bridges, have played a part in the survival of these structures to current day, and there is evidence that a form of concrete could well have been used in building the Egyptian pyramids.
 
Additives have often been used to improve the sturdiness: the Romans and Egyptians added volcanic ash to their formulas to allow it to set under water, and the Romans also realized that including horse hair made their concrete mixture less susceptible to cracking while it solidified. While the Romans had to rely on the power of their formulation to stand on its own, contemporary structural concrete has a vastly superior mix consistency and can combine reinforcing steel for additional tension-resistance.
 
Durable Benefits
 
Modern concrete is one of the most durable building materials obtainable with a long life of service and a great number of benefits, including its outstanding fire resistance and environmental sustainability. With that long service-life, concrete decreases the need for reconstruction and will continue to absorb CO2 throughout its life span, therein helping reduce the carbon footprint. It minimizes air leakage in walls, providing important energy efficiency to buildings in which it is utilised. Its thermal mass is a benefit in all seasons, controlling temperature fluxuations in both the hottest and coldest temps to moderate heating and cooling expenses. There are more modern, environmentally-friendly concrete mixes, and concrete can be produced from local resources at practically any location.
 
Recycle and reuse
 
While concrete structures have a prolonged life, today’s environmental consciousness and added government rules have led to an emerging awareness of recycling as a method of disposing of concrete structures. Once routinely sent to landfills, recycled concrete currently can have an extended life in the building industry. If the concrete to be reused incorporates any rebar and other sorts of metal reinforcements, those are removed with magnets and usually recycled in a separate process. Once that is done, the chunks can be sorted by size and put through a crusher one or more times. The smaller pieces are often used as gravel for construction projects; for example, the gravel might be laid down to form the base level on a roadway before being coated with asphalt or a fresh coat of concrete as the top layer.
 
Some jurisdictions do not allow recycled concrete to be used in certain applications due to the strength limitations inherent to the reuse, but crushed and recycled concrete is frequently used as the dry aggregate for brand new concrete. The key to the success of this procedure is being sure that the recycled concrete is totally free of contaminants. Apart from the really apparent environmental rewards, the use of recycled concrete can significantly reduce the need for gravel mining and helps to conserve landfill use. Globally, nearly 17% of landfill area was used up with concrete-based waste.
 
New Business
 
As the most regularly used building material, concrete naturally also leads in products that call for responsible disposal. Industries now have simplified the method to reuse and create recycled concrete. The mix formulas for concrete will vary depending on the application it is intended to be used in, but each mix can be reused to some extent. Fine and course aggregates, sand, gravel, and crushed stone make up the majority of the concrete mixture. The use of these aggregates is mainly responsible for the strength of the concrete, a composite material that is unequalled in building applications and fuels industries around the world.
 
Modern technological innovation has enhanced the formulas once used by the Romans, so modern day concrete has a lengthier life and more sustainability. Industries have innovative and cost-effective new methods to renew the life of this valuable product through procedures that make it possible for it to come back to service yet again as recycled concrete.