Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete

Maghfouri, Mehdi and Alimohammadi, Vahid and Azarsa, Pejman and Asadi, Iman and Doroudi, Yashar and Balakrishnan, Balamohan (2021) Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete. Journal of Composites Science, 5 (6). ISSN 2504-477X, DOI

Full text not available from this repository.


The utilization of by-products and waste materials to substitute for the natural or manufactured resources is considered as a practical way to obtain green building materials. In concrete mixtures, amongst the many available options, Fly Ash (FA) as a by-product pozzolan has been used as a partial replacement of cement. As for the aggregates, lightweight agro-waste oil palm shell (OPS) can be used as a replacement to conventional aggregate for the production of lightweight aggregate concrete. The present communication aims to investigate the impact of FA on time-dependent development properties of OPS lightweight aggregate concrete, including density, water absorption, compressive strength up to 120-days, and drying shrinkage up to the age of 365-days under standard moist curing, partially early curing, and non-curing conditions. Additionally, drying shrinkage crack development was investigated. In this study, two series of concrete mixtures with different substitution levels of OPS (0%, 50%, and 100%) and FA were tested. From the obtained results, it was concluded that the incorporation of fly ash in OPS concrete reduces the density and compressive strength values. Dually, the initial and final water absorption values plus the rate of drying shrinkage at early and long-term ages increased. On top of that, a high potential of drying shrinkage crack, especially for mixtures with 100% OPS, was identified.

Item Type: Article
Uncontrolled Keywords: Fly ash;Oil palm shell;Lightweight concrete;Compressive strength;Drying shrinkage;Crack development
Subjects: Q Science > Q Science (General)
T Technology > TA Engineering (General). Civil engineering (General)
Depositing User: Ms Zaharah Ramly
Date Deposited: 28 May 2022 01:57
Last Modified: 28 May 2022 01:57

Actions (login required)

View Item View Item