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

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


Hawkar Omer Hama¹, Hazhar Hassan Ahmed¹, Razbar Frazil Majid¹ & Nyan Tahir Omer¹

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

E-mail: hawkarsteel@gmail.com
 



Article info

Original: 06.10.2015
Accepted:03.05.2016
Published online:
15.05.2016





Key Words:

Pila Spi Formation
Crushed limestone
Compressive strength.





Abstract

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  15cmhave  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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zhyar rostam,
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