Industrial Wastes-Cum-Strength Enhancing Additives Incorporated Lightweight Aggregate Concrete (LWAC) for Energy Efficient Building: A Comprehensive Review

Lightweight aggregate concrete (LWAC) exhibits the advantages of thermal insulation, reduces energy consumption building costs, improves building efficiency and easy construction. Furthermore, the utilization of industrial wastes in concrete is advantageous in terms of environmental sustainability. In order to explore this, several researchers investigated the idea of integrating industrial wastes in LWAC. However, the lack of knowledge regarding the performance of industrial waste-based lightweight aggregate concrete hinders the adaptation of this concept and application of LWAC in the construction sector. Therefore, this paper summarizes the research in relation to the sustainable LWACs containing oil palm shell (OPS), lightweight expanded clay aggregate (LECA), vermiculite, perlite, pumice and sintered fly ash as lightweight aggregate, along with industrial wastes and strength-enhancing additives (viz. fibers, polymers, etc.). Firstly, desirable physical, chemical, morphological and mineralogical characterization of different lightweight aggregates are presented, and then a comprehensive overview on fresh, hardened, durability and thermal properties of LWAC incorporating industrial wastes are discussed in comparison with normal weight concrete. The review also highlights the current challenges and suggests the research gaps for further development of eco-friendly LWAC. It is concluded that vermiculite, perlite, pumice, OPS, sintered fly ash and LECA with some suitable industrial waste materials have the potential to be used in the construction sector. Moreover, LWAC with industrial waste has 50–65% lower carbon emission (kg CO2 eq/m3) in the environment. The scientific contribution of this paper provides insights into different LWACs and the knowledge base for future research and paradigm shift of using LWACs as more common alternative building materials.

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Green and Durable Lightweight Aggregate Concrete: The Role of Waste and Recycled Materials

Materials ◽

10.3390/ma13133041 ◽

2020 ◽

Vol 13 (13) ◽

pp. 3041 ◽

Cited By ~ 1

Author(s):

Jiyu Wang ◽

Kai Zheng ◽

Na Cui ◽

Xin Cheng ◽

Kai Ren ◽

...

Keyword(s):

Solid Waste ◽

Negative Impact ◽

Lightweight Aggregate ◽

Cementitious Materials ◽

Environmental Benefits ◽

Industrial Wastes ◽

Lightweight Aggregate Concrete ◽

Future Research ◽

Aggregate Concrete ◽

By Products

Lightweight aggregate concrete manufactured by solid waste or recycled by-products is a burgeoning topic in construction and building materials. It has significant merits in mitigating the negative impact on the environment during the manufacturing of Portland cement and reduces the consumption of natural resources. In this review article, the agricultural and industrial wastes and by-products, which were used as cementitious materials and artificial lightweight aggregate concrete, are summarized. Besides, the mechanical properties, durability, and a few advanced microstructure characterization methods were reviewed as well. This review also provides a look to the future research trends that may help address the challenges or further enhance the environmental benefits of lightweight aggregate concrete manufactured with solid waste and recycled by-products.

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Discussion of Ceramsite Concrete Shaped Column in a Structural System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.188.205 ◽

2012 ◽

Vol 188 ◽

pp. 205-210 ◽

Cited By ~ 1

Author(s):

Jun Guang Zhu ◽

Xu Huang ◽

Rong Yue Zheng

Keyword(s):

Building Materials ◽

Lightweight Aggregate ◽

High Strength ◽

Building Construction ◽

Lightweight Aggregate Concrete ◽

Construction Sector ◽

Structural System ◽

Aggregate Concrete ◽

Light Weight Aggregate ◽

Usage Area

Thermal insulation building materials that is both lightweight and high strength is the key to the future of China's construction sector in achieving energy conservation. In terms of building construction, when comparing lightweight aggregate concrete to that of ordinary concrete, light weight aggregate is lighter, has a large structure span, good seismic performance, saving cost and other advantages; Ceramsite concrete is a type of lightweight aggregate concrete. Also because the shaped column is not ridge, is able to increase the amount of usage area, due to being light is energy efficient, therefore is in line with the wall reformation and is thus preferred. Upon combining these two characteristics, the analysis of the Ceramsite concrete shape columns properties and its prospect for development.

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