Performance evaluation of cashew nutshell ash as a binder in concrete production

摘要

The agro-industrial sector annually produces large volumes of waste by-products which as Received 18 June 2019 a result of the ignorance of their values as well as their ineffective management, pose Received in revised form 11 October 2019 environmental, societal and economic threats. Thus, this study explored the ash from Accepted 14 October 2019 cashew nutshell waste and replaced it with Portland limestone cement (PLC) at 5%, 10%, 15% and 20% using a mix design ratio of grade 25 MPa concrete (M 25). The cashew nutshell was sun-dried for 14 days and then burnt in a gas furnace at a temperature of 750°C for 5h to obtain cashew nutshell ash (CNSA). The chemical and physical properties of the CNSA were examined while the workability of the fresh concrete was investigated. Moreover, the.