**2. Construction industry**

The term construction is mostly accustomed designate the physical (tangible) infrastructure and related facilities, every type of activity associated with the erection and repair of immobile structures & facilities. Construction is creating or assembling of something from something and it produces a one-of-a-kind product, it's complex and undertaken through cooperation by a short-lived organization, and it's essential to the growth of a given country and a crucial sector within the nation's economy (in Ethiopia, about 60% of the federal capital budget is channeled to this sector for Physical infrastructures, 70% of the capital budget is allotted for Transport & Communication and Buildings cover only 13% of the capital budget). The sector has a significant and dynamic part in transforming the aspirations and desires of individuals into reality by physically implementing various construction development projects. The products of construction contribute extensively towards the creation of wealth and consequently the quality of the lifetime of the population.

The construction business furnishes capital improvements to countries, which is incredibly much allied with the event of investments to supply future benefits to nations. Since the industry primarily represents an investment, construction activities drop quite other industries during recessions. The construction industry often makes skills more immediately rewarding which is why most workers during *Production of Sustainable Concrete by Using Challenging Environmentally Friendly Materials… DOI: http://dx.doi.org/10.5772/intechopen.99239*

this industry became more prosperous professionals than in other industries. The industry is pigeonholed by **c**onverging (many components and lots of flows going together into one object), temporary (project being funded only for one object), highly fragmented with significant negative impacts, more complex & often associated with changes & uncertainties, amplified reaction in financial conditions, labor-intensive and land dependence. Outside this, it's challenged by low productivity, cost and time target failure, quality failures (increase construction costs in rework alone), conflicts and disputes, leading to claims and time-consuming litigation, waste during construction (Unnecessary material handling & material waste, rework, poor material allocation, lack of constructability, etc.), image (it is a sector having the worst public image among industrial sectors, Dirty, dull, & environmentally insensitive), have the very best incident rate of fatal accidents and somber injuries of all industries and also the furthermost environmentally unfriendly industries.

Beyond its role in the nation's development, the sector incorporates a negative bearing on the built-up and its surrounding milieu or sustainable development. The industry affects sustainability in its major five phases: (1) pre-design phase (material selection, building program, project budget, team selection, partnering, project schedule, codes, standards, laws, research, and site selection); (2) on-site phase (site analysis & assessment, site layout and development, watershed conservation and management, equipment and materials on-site); (3) design phase (passive solar design, materials & specification, indoor air quality): (4) construction phase (environmentally conscious construction, preservation of features & vegetation waste management and source control practices): (5) operation and maintenances phase (maintenance plans, indoor quality, energy efficiency, resource efficiency, renovation, housekeeping & custodial practices).
