دراسة تقدير الجبس في التربة بطريقة حرارية بديلة

الملخص EN

The study was carried out in the research laboratories in DeirEzzor center during 2009-2010 with the aim to evaluate the soil content of Gypsum by an alternative heating method .

The standard samples with pure Gypsum were made up to 0, 1, 2, 3, 4, 5, 6,10, 20, 40, 60, 80, 90, 100%, and 24 samples of soil with a different Gypsum content were taken from different areas from DeirEzzor.

The Gypsum content in all samples was evaluated by the traditional standard ones (heating method for Nelson, electrical conductiviity method, titration method), and by alternative heating method,which depends on heating at 105 C° to remove the hygroscobic water , then heating at 200 C° to remove the crystallization water of Gypsum.

In fact ,the results showed that the superiority of suggested method to the used traditional methods is caused by its accuracy in addition it is easy, cheep and safe environmentally.

However, the evaluated value of Gypsum content by the suggested method was strongly correlated with Standard samples (R2=1).

The alternative method measure 99.68% of Gypsum content in the standard samples, whereas the heating methods of Nelson and the electrical conductivity methods evaluate only 84.83% and 88.77% respectively .