التقييم الهندسي للحصى الخابط لمقالع مختارة في محافظة كربلاء المقدسة

الملخص EN

This study includes a engineering evaluation and the most Important applications of the Subbase deposits for Selected quarries in the Governorate of Karbala (South and southwestern Iraq) .

These quarries are located in the Tar Al Said area and they includes the Al-IKhadir (1) and (2) ,The ALObaith valley ,AL-Baraka , and AL-Samaree quarries .

The physical and engineering tests were done including grain size analysis of soils ,water content ,Californian bearing ratio ,Atterberg Limits test .

Scraping ratio The chemical tests included the Sulfate ,Gypsum ,and total solution salts ratio .

The results from the physical and engineering tests, of the Sub-base showed that fine grains in the Al – Ikadir (1) and (2) ,and Al Samaree quarries , increase more than in Al-Baraka quarry .

The Compaction test showed that the Lab.

Dry density in the Al- Baraka quarry is higher than other quarries.

The results also showed that the plasticity index is increased in the Al- Ikadir (1) and Al- Baraka quarries in comparison with the other quarries .

The results of the Californian bearing ratio and Scraping ratio ,for the samples taken from the study area have almost identical values because they have similar source rocks, It showed also that it is identical to the engineering specifications required .

The results of the chemical test of the samples (sulfates, gypsum ,T.T.S, ratio) showed that it is good for engineering application , and their values are almost identical .

The engineering evaluation of the sub-base indicated that Al- Ikadir (1) and (2), and Al- Samaree quarries are of class (B)and Al- Baraka is of class (A) , So, all of the samples are accepted and in demand for engineering applications .