Experimental investigations on potential of brick-based building-derived materials for geotechnical applications
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TECHNICAL PAPER
Experimental investigations on potential of brick‑based building‑derived materials for geotechnical applications Ashok Kumar Suluguru1 Received: 29 April 2020 / Accepted: 1 July 2020 © Springer Nature Switzerland AG 2020
Abstract A large quantity of solid waste, known as construction and demolition waste (CDW), are being generated by the construction activities and its associated demolition practices. Huge proportion of CDW is comprised of building-derived materials (BDM) that come from the demolition of buildings which include brick and concrete—based elements. The present study was aimed at characterization of brick-based building-derived materials (BBDM) to encourage by reusing and recycling them in practical purposes. Currently, BDM find its application as recycled aggregates, and extraction of the antecedent aggregates from virgin BDM by various physical and chemicals processes increases the cost. To address this issue, this study accentuates the use of BDM to provide significant cost reduction, which besides reduces the impact on landfills, preserves natural coarse aggregates and saves energy. BBDM were characterized through a series of physical and microscopic investigations to assess their compatibility for using in combination with local soil and even exposed to a very aggressive chemical environment like acids, salts and seawater to study their response. Grain size analysis, compaction characteristics, water absorption, abrasion and strength tests were performed on locally available sand mixed with 5, 10, 20 and 30% of BBDM by weight in a chemically aggressive environment. Aggregate impact value (AIV) of 41% and Los Angeles (LA) abrasion value of 45.8% indicate that the BBDM are resistant to impact loads and satisfy the prerequisites of a subbase material. The angle of shearing resistance (ϕ) of virgin BBDM is 46°, and it is found to decrease with exposure to the chemicals. Keywords BBDM · Chemical attack · Ground improvement · Chemical interaction
Introduction In developing countries like India, rapid infrastructure growth and urbanization lead to generation of huge amounts of CDWs. Periodic modifications of new constructions and renovations of important existing structures such as bridges and flyovers also add to the increase in the generation of CDW quantity. According to 2016 estimates, CDW constitutes about 530 million tons in India. The proper handling and disposal of these wastes has become a major problem in the present world. Moreover, natural disasters like landslides and earthquakes contribute to accumulation of these wastes [1]. CDW is defined by the United States Environmental Protection Agency (USEPA) as the unwanted materials comprising of the debris produced during a new construction or * Ashok Kumar Suluguru [email protected] 1
Civil Engineering Department, Malla Reddy Engineering College, Hyderabad 500100, India
renovation, and demolition of buildings, roads and bridges [1]. The construction industry alone significantly contributes to the environmen
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