Abstract
This study includes several sample were taken from different quarries located in Nineveh Governorate. The microscopic study of thin sections ( sample for each quarry) reveled existing a high ratio of voids in (weakly samples) that were formed due to the dissolution .This certainly effects the strength of rocks and eventually leads to not using in certain parts of building. Depending on the uniaxial compressive strength of the rocks is studied area, it is shown that it has week to medium strong. This is the same conclusion. With the previous studies of the calcareous rocks in Governorate. The Flexural test and slake-durability test have also converted that the using of theis rocks as decoration and covering of the outer walls as well as. While the abrasion resistance test (loss angles test) according to the Iraqi and international standers are reveled to the instability of these rocks in road pavements as aggregates, but it can be used as concrete aggregate.Generally, the wide widespread abandons of calcareous rocks in Nineveh Governorate, also the different discrepancy in it has led to wildly used in different construction purposes.
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