Crushed limestone from Pila Spi Formation as alternative for conventional aggregate, Qaradagh area, Kurdistan region - Iraq

Volume 1 , Issue 1 , January 2016 , Pages 331-339

Authors

¹ Ministry of Natural Resources, Directory of Geological Survey and Mineral Investigation-Suleimanyah-Kurdistan

The late Eocene limestone rocks of Pila Spi Formation from Qaradagh area in Sulaimani

Governorate, Kurdistan region (NE of Iraq) have been selected as alternative for

conventional aggregate in concrete. The collected samples from the section are analyzed

chemically and physically. Field investigations in the area were adopted. The laboratory

tests including particle size analysis, los angeles abrasion, specific gravity, water

absorption, soundness and gypsum content had been done for the crushed limestone

aggregates. In addition, twelve concrete cubes in dimension 15cm3

have been molded according to the Iraqi Standards and the compressive strength test was carried out on it.

The aggregate mix design consists of 1.5: 2: 4 with 0.5 water/ cement ratio. The results of

the aggregate are compared with the international standard tests; accordingly, the

Limestone of Pila Spi Formation is acceptable as alternative for natural sand and gravel.

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