Global warming is considered to be an issue of national and international significance and, if left unattended, a threat to future standards of living as well issues such as biodiversity and adaptability of the planet’s sensitive eco-systems.
This paper evaluates the performance of steel furnace slag (SFS) coarse aggregate in blended slag and low calcium fly ash geopolymer concrete (GPC). The geopolymer binder is composed of 90% of low calcium fly ash and 10% of ground granulated blast furnace slag (GGBFS). Mechanical and physical properties, shrinkage, and detailed microstructure analysis were carried out.
This research focuses on elucidating the present knowledge gaps in geopolymer concrete's engineering properties, specifically its stress-strain behaviour. Geopolymer concrete (GPC) is an emerging alternative to ordinary Portland cement concrete (OPCC), and is produced via a polycondensation reaction between aluminosilicate source materials and an alkaline solution.
The main purpose of this research is to study the time dependent behaviour of a geopolymer concrete. The geopolymer binder is composed of 85.2% of low calcium fly ash and only 14.8% of ground granulated blast furnace slag. Both drying shrinkage and creep are studied. In addition, different curing conditions at elevated temperature were used.
In this paper, geopolymer concrete bond with both deformed and smooth reinforcing steel bars is investigated using the standard RILEM pull-out test. The geopolymer binder is composed of 85.2% of low calcium fly ash and 14.8% of ground granulated blast furnace slag (GGBFS).
Australia is heavily reliant upon the use of coal for electric power generation with approximately 74.9% or 170,822 GWh of electricity in year 2010 to 2011 being generated through coal-fired power plants. Australia’s coal powered generators produce about 14 million tonnes of fly ash per year.
A major barrier to the adoption of Geopolymer concrete in construction is the lack of long-term performance data. Field testing has been undertaken to determine the behaviour of geopolymers in different service environments and address the gaps in knowledge.
Coastal infrastructure is under constant attack from the marine environment. Under current conditions, breakwaters and seawall armoured by rock or concrete units require regular monitoring and maintenance. But with anticipated changes to the coastal wave climate due to climate change scenarios, costal structures would be exposed to even greater wave energy, and higher rates of damage.