Work

Engineering and sustainability performance of geopolymer concrete blended with sodium silicate effluent

Year: 2025

Type: article

Abstract: : Geopolymer concrete (GPC), is found to be one of the suitable alternatives, which reduces the carbon emission due to utilization industrial by-products. Due to over use of conventional filler materials, there exists a demand. Therefore, conventional coarse aggregate was substituted with sodium silicate effluent (SSE). The SSE was employed in the range from 0% to 50%; to examine the engineering performance of GPC. Increasing the dose of SSE decreases the slump from 75 mm to 60 mm for the concrete with 50% SSE, and also decreases the strength from 36 MPa (concrete with 0% SSE) to 17 MPa (concrete with 50% SSE). The GPC samples with and without SSE were immersed in acid and salt solutions; the acid used in the present study was sulfuric acid (H 2 SO 4 ) and nitric acid (HNO 3 ). The salts employed for the study were magnesium sulfate (MgSO 4 ) and sodium chloride (NaCl). Approximately, 43% of the original concrete (0% SSE) strength was degraded after 360-d of H 2 SO 4 immersion, whereas 50% SSE shows a loss of 71%. For HNO 3 immersion, the loss was found to be 40.8% for 0% SSE mix and 55% for 50% SSE mix. 35% and 42% loss in strength was observed for the concrete with 0% and 50% SSE after exposed to MgSO 4 solution, and 25-35% loss was seen for the mix with and without SSE.

Source: Developments in the Built Environment

DOI: 10.1016/j.dibe.2025.100678

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

Institution: Karunya University

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, Climate action

Open Access status: gold

Estimated APC paid: $3,230