Abstract
Lightweight aggregate concrete is an innovative building material used to reduce the self-weight of a high-rise building. Recently, the use of lightweight aggregate in construction is increasing immensely due to its performance during an earthquake. Lightweight aggregate concrete (LWAC) is a solution for the achievement of sustainability in the construction sector, which helps us cut down the overall cost of a project in massive construction work (tall buildings and bridges). Additionally, using various industrial by-products and waste instead of natural aggregate allows us to reduce the negative impact on the environment. The development of lightweight aggregate concrete with its relevance is still prominent. The performance of lightweight aggregate on various properties of concrete is explored in this study. This study shows that the lightweight aggregate and waste materials of less density can be used for structural applications with a strength equivalent to that of normal weight concrete. The application and advantages of LWAC are also discussed in this study. The paper’s overall finding reveals that LWAC can be used in sustainable construction growth and reduce waste by using it as natural aggregate in concrete to maintain environmental sustainability.
Highlights
Structural concrete is the base of all construction activities and is the one of the most used substance, with nearly 3 tons used by each person on earth yearly [1,2,3,4]
Choi et al [43] showed that a higher percentage replacement of waste polyethylene terephthalate bottles (PET) at 75% as aggregate improves the workability of concrete by about 123% compared to normal concrete
In terms of the different durability properties, various types of lightweight aggregate have a significant effect on lightweight aggregate concrete
Summary
Structural concrete is the base of all construction activities and is the one of the most used substance, with nearly 3 tons used by each person on earth yearly [1,2,3,4]. The industrial wastes, i.e., fly ash, slag, clinker, rubber, and recycled plastic, etc., can be used for manufacturing lightweight concrete [63,64,65,66,67] Apart from all these benefits, if the center of gravity does not coincide with the center of the building’s rigidity, a higher amount of reinforcement steel is required for normal weight concrete than lightweight concrete structural components. Choi et al [43] showed that a higher percentage replacement of waste polyethylene terephthalate bottles (PET) at 75% as aggregate improves the workability of concrete by about 123% compared to normal concrete.
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