Abstract
Soil is known as green material with low carbon dioxide production emissions in comparison with another building material. In this research, soil combined to activator alkaline to produce hardening materials as eco-friendly to the environment. The alkaline with sodium hydroxide, sodium silicate and fly ash are used. Curing temperature ranging from 80, to 140 degrees Celsius and curing time from 4 to 10 hours are investigated. The results show the strength of geopolymer soil is depended on curing time, temperature and sodium hydroxide-sodium silicate ratio. On the influence of clay content, soil is replaced by sand ranging from 20 to 80%, shows suitable clay which is from 4.79-12.43% by weight.
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