The following sample essay on “The Impacts Of Construction Activity On The Atmosphere”: tells about how the use of natural resources and energy, pollution of air, land, soils, and water resources are some examples of the impact on the environment coming from the construction industry.
Construction is one of the most significant industries that contribute to socio-economic growth, especially in developing countries. However, within the developing countries, the development business continuously faces issues and challenges with demanding resources with the increase in population and economic enlargement.
The in-depth use of natural resources and energy, and pollution of air, land, soils, and water resources are some examples of the impact on the environment coming from the construction industry. There has been an increasing concern over the impacts of construction activity on the atmosphere and still, sufficient measures have not been taken to mitigate them & the standard practices of the development method fail to regulate the challenges that occur in the construction industry. Therefore, green construction has become a central for countries worldwide now a day; which aims to minimize natural resource consumption and the resulting impact on ecological systems.
Portland cement is the largest consumed well on the planet by mass. After completion of the hydraulic reaction with water, it produces concretes which is the second most used substance on the earth after the water. From individual houses to the world’s tallest, deepest & longest structures wouldn’t be possible without exiting conventional Portland cement. The Portland cement industry is considered a major carbon-emitting, highly energy-intensive industry and contributor to the depletion of natural resources affecting environmental sustainability.
Due to that, two strategies were identified as solutions to overcome the challenges in sustainability-related to the construction industry. 1) recycling old materials and 2) developing new sustainable materials. Reuse of construction waste, e.g., recycled aggregate in new concrete and recycled cementitious powder as the ingredients of cement are green approaches to maintain sustainability by reducing disposals of construction debris in landfills. Currently, a more promising alternative to replace the traditional cement, named geopolymer (or alkali-activated materials), is gaining higher interest in the industrial and academic fields. Geopolymer cement can be derived through chemical reactions (e.g., gels formation and geo polymerization) between industrial by-products or co-products (as aluminosilicate precursors) and activating solutions (as activators), e.g., alkali-silica or phosphate. It is believed that calcination-free geopolymer cement enabled the construction industry to address the eco-friendliness and sustainability requirements. Apart from that, it is generally recognized that the geopolymer concretes demonstrate excellent mechanical performance, and chemical and thermal stability compared to the conventional hydraulic concretes.
Numerous studies have been conducted on the production of geo polymer-based mortar or concrete utilizing fly ash & very few of no research has been conducted with bottom ash (circulating fluidized bed combustion coal bottom ash) as on compressive strength & durability. Therefore identification of mechanical, application & durability behaviors of bottom ash-based geopolymer concretes under optimized curing temperature is more crucial to address the sustainability issues in the construction industry. High energy demand is critical for the use of geopolymer base concrete.