Journal article
Performance of rice husk Ash-Based sustainable geopolymer concrete with Ultra-Fine slag and Corn cob ash
Construction and Building Materials, Vol.279, 122526
2021
Metrics
46 Record Views
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Abstract
•Ultrafine slag enhanced the mechanical properties of the geopolymer concrete.•Corn con ash improved the durability of the sustainable geopolymer concrete.•Pore structure can be improved by incorporating CCA.•Reduced drying shrinkage was obtained for RHA and CCA based geopolymer concrete.
This paper presents the first scientific attempt to develop and study the performance of rice husk ash (RHA) and ultra-fine slag (UFS) based sustainable geopolymer concrete with different ratio of corn cob ash (CCA). NaOH (8 M) and Na2SiO3 were employed as alkaline activators. CCA acted mainly as amorphous silica and was utilised as a substitute for RHA. The effects of different CCA contents (0%, 3%, 6%, 9% and 12% by RHA mass) on the performance of geopolymer concrete in terms of fresh, hardened and durability properties have been evaluated. Different characteristics, i.e. density, air content, workability, compressive, flexural and split tensile strengths, Young’s modulus of elasticity were investigated. Meanwhile, the durability performance was also evaluated by using different methods such as rapid chloride penetration test, chloride conductivity test, water sorptivity test and DIN (Deutsches Institut für Normung) water permeability test. The outcomes of this research have shown that UFS and CCA improved the compressive strength by 14–15%. They significantly improved the polymerisation and thus enhanced the strength and durability of sustainable geopolymer concrete. Furthermore, CCA and UFS acted as micro fillers and increased the CaO as well as SiO2 contents which enhanced the densification. Additionally, the development of hydration products in the matrix, enhanced the pore structure and thus the strength. This study revealed that CCA (up to 6%) can be utilised as a substitute binder to produce sustainable geopolymer concrete, and has the potential to replace conventional concrete for structural applications.
Details
- Title
- Performance of rice husk Ash-Based sustainable geopolymer concrete with Ultra-Fine slag and Corn cob ash
- Creators
- Saloni (Author) - School of Environment, Science & Engineering, SCU, Lismore, NSW, AustraliaParveen (Author) - Department of Civil Engineering, DCRUST Murthal 131039, Haryana, IndiaThong M Pham (Author) - Center for Infrastructural Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, Kent Street, Bentley, WA 6102, AustraliaYee Yan Lim (Author) - School of Environment, Science & Engineering, SCU, Lismore, NSW, AustraliaS.S Pradhan (Author) - Department of Civil Engineering, NIT, Agartala, Tripura, IndiaJatin (Author) - Department of Civil Engineering, MDU, Rohtak, Haryana, IndiaJatin Kumar (Author) - Department of Civil Engineering, MDU, Rohtak, Haryana, India
- Publication Details
- Construction and Building Materials, Vol.279, 122526
- Publisher
- Elsevier Ltd
- Identifiers
- 991012922098702368
- Academic Unit
- School of Environment, Science and Engineering; Faculty of Science and Engineering; Engineering
- Language
- English
- Resource Type
- Journal article