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- Title
Evaluation of the Validity of the Rocks of the Pila Spi Limestone Formation in Duhok Anticline, Northern Iraq for Riprap Purposes.
- Authors
Salih, Ibrahim Adnan; Abood, Mohammed Rashed
- Abstract
The research aims to show the validity of limestone rocks of Pila Spi Formation in the fold of Duhok, northern Iraq for Riprap purposes. The formations of Pila Spi, Fatha and Injana in addition to the Quaternary sediments are mainly exposed in the study area. Five stations are selected in the northeastern limb of Duhok anticline, in which the limestone rocks belonging to Pila Spi Formation are exposed. The petrophysical tests show that the dry density ranges between (2.46-2.08) g/cm3, the absorption ratio ranges between (3.15- 10.90%) and the specific weight values range between (2.66-2.74). While the mechanical tests show that the percentage of mechanical abrasion ranges between (20.06-58.42%) and the percentage of chemical abrasion ranges between (6.87-21.25%), and when comparing the properties with the specification Florida standard, it is found that is the Pila Spi rocks are valid for Riprap purposes in stations (1 and 2) and invalid in stations (3, 4, and 5) because the values of absorption ratio and mechanical abrasion are beyond the limits of the specification. By conducting a comparison between the properties of the rock samples and the specifications Iraqi standard, it is believed that they are valid for riprap purposes in stations (1, 2, and 3) and not valid in stations (4 and 5) because the percentage of mechanical abrasion is beyond the boundaries of the specification. In comparison with the properties with the specification American standard, it is found to be valid for riprap purposes at stations (1 and 2) and not valid at stations (3, 4, and 5) because the absorption ratio values are out of specification limits.
- Subjects
GEOLOGICAL research; GEOLOGICAL surveys; LIMESTONE; ENGINEERING geology; BUILDING stones
- Publication
Iraqi National Journal of Earth Sciences, 2023, Vol 23, Issue 2, p239
- ISSN
1682-3222
- Publication type
Article
- DOI
10.33899/earth.2023.140666.1090