Civil Engineering and Architecture Vol. 9(4), pp. 1144 - 1155
DOI: 10.13189/cea.2021.090416
Reprint (PDF) (326Kb)

Sustainable Usage of Waste Materials in Aerated and Foam Concrete: A Review

Indu Susan Raj , Karthiyaini Somasundaram *
School of Civil Engineering (SCE), Vellore Institute of Technology, Chennai Campus, Chennai - 600127, India


The utilization of waste materials in concrete is now a widely used concept that counteracts the depletion of natural resources. In addition to this, it will untangle the disposal of waste materials in nature and find an alternative approach to shelter the environmental resources. Due to rapid growth in industrialization, waste management has become increasingly challenging in recent years. Several waste materials could be used in whole or in part to replace cement or aggregates. The main disadvantage of conventional concrete is its increased self-weight. The paper summarizes the current knowledge of two types of lightweight concrete, viz aerated and foam concrete that can be made less dense than conventional concrete and the possibility of using waste materials. The usage of admixtures like Fly ash, GGBS, silica fume, and waste materials like quarry dust, rubber particles, rice husk ash, plastic waste, glass powder, and foundry sand is examined. The effective use of waste materials in lightweight concrete is reviewed by evaluating properties such as workability, elastic modulus, compressive strength, flexural strength, and microstructural characteristics. The optimum percentage of Fly ash, GGBS, silica fume, and rice husk ash is found to be 20%, 50 -75%, greater than 10%, and 20 – 30%, respectively. Out of different types of plastic waste used in concrete, PVC granules that pass 5mm sieve size are used to prepare lightweight aggregate concrete, which exhibits a density of around 1500kg/m3. The quarry dust is the best option for an acceptable aggregate replacement at 20% in foam concrete. The studies show a drastic increment in compressive strength and capillary absorption is also increased to 14% than conventional cement, which reduced the risk of early-age cracking. Fine aggregate replaced of glass powder exhibits delay in setting time at higher percentages. While using 20% of fine aggregate substituted with foundry sand yields comparable results to the control specimen in terms of their mechanical properties

Aerated Concrete, Foam Concrete, Rubber Particles, Plastic Waste, Quarry Dust, Fly Ash, GGBS

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Indu Susan Raj , Karthiyaini Somasundaram , "Sustainable Usage of Waste Materials in Aerated and Foam Concrete: A Review," Civil Engineering and Architecture, Vol. 9, No. 4, pp. 1144 - 1155, 2021. DOI: 10.13189/cea.2021.090416.

(b). APA Format:
Indu Susan Raj , Karthiyaini Somasundaram (2021). Sustainable Usage of Waste Materials in Aerated and Foam Concrete: A Review. Civil Engineering and Architecture, 9(4), 1144 - 1155. DOI: 10.13189/cea.2021.090416.