Work

Evaluation of mechanical, durability and sustainability performance of geopolymer concrete using sodium silicate waste as source material

Year: 2024

Type: article

Abstract: This study examines the physical, mechanical, and durability characteristics of geopolymer concrete (GPC) when blended with sodium silicate waste (SSW). SSW was added in varying amounts from 0 % to 50 %. The concrete was exposed to sulfuric acid and nitric acid (both at 2 % concentration) over 360-d, with assessments every 28-d to observe long-term performance in acidic and marine environments. The concrete's workability decreased by 35 % when 50 % SSW was added, making it stiffer. Compressive strength increased by 18 % with 50 % SSW, indicating enhanced polymerization. After 360-d, mass loss was minimal (2 % with sulfuric acid, 2 % with nitric acid), while strength loss ranged between 35 % and 37 %. In marine environments (sodium chloride (NaCl) & magnesium sulfate (MgSO 4 ), the observed mass loss after 28-d was about 1 %, and strength loss was slightly lower with 50 % SSW (38 %) compared to GPC without SSW (39 %). Using SSW, the cost efficiency improved by 21.71 % and energy efficiency improved by 18.56 % compared to concrete without SSW. The study concludes that SSW can be a reliable and sustainable alternative in GPC, offering enhanced performance and cost-efficiency.

Source: Case Studies in Construction Materials

DOI: 10.1016/j.cscm.2024.e03898

Authors: Balamurali Kanagaraj, N. Anand, R. Samuvel Raj, Eva Lubloy

Institutions: Karunya University, Budapest University of Technology and Economics

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,110