The construction industry is currently responsible for a huge proportion of resource use and energy consumption. Circular construction, based on the circular economy (CE), may be the answer to these environmental and economic challenges. It is a way of managing resources that aims to minimize negative environmental impact.
What exactly is circular construction?
It is a way of designing buildings so that their components can be reused. The safe disposal of biological elements is also an important issue. Planning and constructing a 100% circular building is currently virtually impossible, but the idea itself is to minimize the use of materials, especially non-renewable ones. The aim is also to reduce environmental degradation and pollution.
Examples of material reuse:
• Rubble from demolished buildings — in its second life, it can be used as foundations for a new building or material for a sidewalk.
• Wood — wood that was previously part of a structure can be used as a raw material for furniture or as a secondary source of energy.
• Steel — it does not lose its mechanical properties in the recycling process and is widely reused in reinforcement and metal structures.
• Natural and cellulose fiber insulation — made from biodegradable, recycled materials.
In circular construction, new technologies focused on sustainable development and enabling closed-loop recycling are becoming increasingly popular.
The most interesting examples include:
• Cool Roofs technology — special roofing materials that reflect sunlight.
• IoT (Internet of Things) — smart systems for monitoring energy and water consumption and the condition of materials; they facilitate the control and optimization of building efficiency.
• Regenerative elevators — smart elevators that transfer the energy collected during operation to the building.
• Self-healing concrete — contains microorganisms that fill cracks with calcium carbonate.
The use of prefabricated and modular elements is also key, as it facilitates subsequent dismantling and reuse.
Circular construction brings broad environmental, economic, and social benefits, such as:
• Increased construction and operational efficiency — dismantling, reuse of elements, and technologies such as BIM and IoT enable faster construction and reduced costs.
• Long-term financial savings — lower operating costs thanks to reduced energy and water consumption and easier building maintenance.
• Reducing negative environmental impact — lower consumption of raw materials, minimization of waste going to landfills, and reduction of CO2 emissions.
• Improved indoor environment quality — modern technologies improve the comfort and health of residents through cleaner air and effective thermal insulation.