Title: A new experimental study on fly ash, lime and dredged sediment mixed block as an alternative eco-friendly building materials

Authors: Kaniz Fatema; Mahbubur Rahman; Md. Akhter Hossain Sarker; M. Aminul Haque; Md. Shihabul Islam

Addresses: Housing and Building Research Institute (HBRI), Darussalam, 120/3, Mirpur Road, Dhaka, 1216, Bangladesh ' Department of General Educational Development (GED), Faculty of Science and Information Technology, Daffodil International University, 4/2, Shukrabad, Mirpur Road, Dhanmondi, Dhaka 1207, Bangladesh; Shanghai Engineering Research Center for Intelligent Instrument for Diagnosis and Therapy, Institute of Nano Biomedicine and Engineering, Department of Instrument Science and Engineering, School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China ' Housing and Building Research Institute (HBRI), Darussalam, 120/3, Mirpur Road, Dhaka, 1216, Bangladesh ' Department of Civil Engineering, Leading University, Sylhet, Bangladesh ' Department of Agroforestry and Environmental Science, Sher-e-Bangla Agricultural University, Dhaka, 1207, Bangladesh

Abstract: Fly ash is a byproduct in the thermal power plant station that is produced from combustion of coal and identified as hazardous material. Many global researchers have been attempted over the long years for effective utilisation of fly ash a sustainable construction material. In Bangladesh, only 10%-15% fly ash is used in cement manufacturing industry for producing the Portland composite cement (PCC) and concrete industry to be cost effective as well as minimise the costly disposal processes. This paper reported the experimental investigations that were carried out to study the effectiveness of fly ash, lime and dredges sediment on the strength development of block as an alternative building material. Fly ash was partially replaced with four percentages (30%, 35%, 40% and 45%) and again was replaced with other four percentages (25%, 30%, 35% and 40%) including 5% of lime by weight. The study observed the greater strength and water absorption resistant performance on the specimen made by 35% fly ash and 5% lime at 28 days curing age. The outcomes of the study can be applied in the construction sectors for making decision to use the studied building materials for cost-effective and eco-friendly manner.

Keywords: ordinary Portland cement; OPC; fly ash; dredged sediment; water absorption; compressive strength; eco-friendly building materials.

DOI: 10.1504/IJMRI.2021.113938

International Journal of Masonry Research and Innovation, 2021 Vol.6 No.2, pp.196 - 207

Received: 26 Nov 2019
Accepted: 13 May 2020

Published online: 02 Apr 2021 *

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