Performance enhancement of rubberised-alkali-activated-concrete utilising ultra-fine slag and fly ash

Saloni; Parveen; Yee Yan Lim; Thong M. Pham; Prateek Negi

doi:10.1016/j.clema.2022.100080

Back

Performance enhancement of rubberised-alkali-activated-concrete utilising ultra-fine slag and fly ash

Journal article

Open access

Peer reviewed

Performance enhancement of rubberised-alkali-activated-concrete utilising ultra-fine slag and fly ash

Saloni, Parveen, Yee Yan Lim, Thong M. Pham and Prateek Negi

Cleaner Materials, Vol.4, pp.1-16

06/2022

DOI: https://doi.org/10.1016/j.clema.2022.100080

Appears in Recent Faculty of Science and Engineering Publications

Files and links (2)

pdf

Performance enhancement of rubberised-alkali-activated-concrete utilising ultra-fine slag and fly ash5.57 MBDownload View

Published (Version of record)CC BY-NC-ND V4.0, Open Access

url

Performance enhancement of rubberised-alkali-activated-concrete utilising ultra-fine slag and fly ashView

Published (Version of record)CC BY-NC-ND V4.0, Open

Metrics

3 File views/ downloads

4 Record Views

Abstract

Carbonation

Crumb rubber (CR)

Durability

Rubberised alkali-activated concrete (RAAC)

Strength

Water absorption

This paper investigates the strength and durability properties of low calcium fly ash based rubberised alkali-activated concrete (RAAC) with a replacement of natural fine aggregate (NFA) with crumb rubber (CR) at different percentages. RAAC was prepared using a mix of Sodium silicate (Na2SiO3) and 8 M Sodium hydroxide (NaOH). The prepared specimens were cured at ambient room temperature and an elevated temperature of 60°C. The properties of RAAC, including density, slump, air content, compressive and flexural strengths, and elastic modulus were examined. The durability characteristics like carbonation depth, water penetration, and electrical resistivity were also investigated. The experiments indicated that slump, density, and strengths declined with increasing CR%. In addition, RAAC also displayed a higher water absorption and carbonation depth than conventional alkali-activated concrete (AAC) and was more prone to chemical, water, and chloride attacks. However, the higher electrical resistivity (ER) of RAAC indicated a higher compressive strength. The heat curing further enhanced the strength of RAAC and marginally improved its durability. Finally, the findings are supported with microstructural investigations. The heat-cured specimens possessed a comparatively denser microstructure compared to ambient-cured specimens. It is concluded that the discarded tyres can be used in RAAC production for structural applications, hence providing a sustainable solution for waste utilisation.

Details

Title: Performance enhancement of rubberised-alkali-activated-concrete utilising ultra-fine slag and fly ash
Creators: Saloni - Southern Cross University
Parveen - Department of Civil Engineering, DCRUST, Murthal 131039, Haryana, India
Yee Yan Lim - Southern Cross University
Thong M. Pham - Curtin University
Prateek Negi - University of Twente
Publication Details: Cleaner Materials, Vol.4, pp.1-16
Publisher: Elsevier Ltd
Identifiers: 991013036352102368
Academic Unit: Faculty of Science and Engineering
Language: English
Resource Type: Journal article

Performance enhancement of rubberised-alkali-activated-concrete utilising ultra-fine slag and fly ash

Files and links (2)

Metrics

Abstract

Details

Southern Cross University Social media