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Effects of Steam Curing on Strength Development of Sodium Carbonate and Sodium Silicate Activated Fly Ash / Slag Mortar
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ban, Cheah Chee |
| Copyright Year | 2016 |
| Abstract | To maintain the continuous growth of a nation, development in the construction industry is the most crucial in order to locate more residents, as well as creating more business opportunities. Previously, there are a few types of research discussed the impact of using traditional building material to the environment. The environmental effects can be estimated by considering the production of 1m3 of concrete, then summing up the potential environmental impacts of raw material used for the production of concrete. Thus, research on using geopolymer binders such as Pulverised Fuel Ash (PFA) and Ground Granulated Blast Furnace Slag (GGBS) to replace cement are frequently done by several researchers. There are some limitations for geopolymer concrete, such as low early strength and long setting time. Furthermore, the use of a high amount of sodium silicate as an alkaline activator, in turn, makes the geopolymer concrete is creating another environmental problem instead of global warming. Sodium hydroxide is often used as alkaline activator, but the high pH of sodium hydroxide makes it hazardous in handling. To speed up the strength development of geopolymer, heat curing is normally used. However, heat curing by oven dry is not so favourable as increasing the oven temperature will increase the power of electricity. This would, in turn, use more electricity and the geopolymer is no more environmental friendly. Steam curing could achieve higher curing temperature as the steam from a continuously boiling water is often more than 100oC. In this study, PFA and GGBS are used together as the main binder. Sodium carbonate and sodium silicate are used as the alkaline activator. Steam curing is done at the age of 7 days and the strength is compared with samples with the age of 7 days and 28 days without steam curing. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.jbete.com/wp-content/uploads/2016/10/JBETE-18.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
