Evaluation of the Suitability of Mukdadiya Formation Rocks for Using in Concrete / Northern Hemrin Anticline

Abstract

The aim of this work is to evaluate the suitability of gravely sediments of the Mukdadiya formation (Lower Pliocene) in the northern Hemrin anticline on Tikrit – Kirkuk road / north-eastern of Iraq for concrete uses , and compared with the standard specifications (Iraqi, American and British) samples have been collected from four different stations by two samples for each station for the purpose of conducting various geotechnical tests including physical tests , strength and durability as well as chemical tests) Results of geotechnical evaluation for physical tests show that the grain size distribution  of  the 1st and 2nd  stations suitable for uses to concrete for classes (40) class except  3rd. and 4th station , according to[1] , the results of Flakiness Index and elongation Index shows that the samples of four stations did not exceed the permitted border According to the British Standard and suitable to be provided by the requirements for the use of concrete .                           The strength tests also showed the results of (AIV) shows it's don’t exceed than 9.95%) for all sample in the study area , and for compressive strength that taken from point load test shows that all stations classified the aggregate strength (very strong  -  extremely strong) according to[3] .                                                         Durability geotechnical tests (Loss Angeles) results shows the percentage of weight loss for the four samples are not exceed the defined value 35% , so it is suitable for use for concrete and sub-base coarse aggregate and soundness test results shows suitability of all samples  to use in concrete works . The chemical analysis  shows suitability according to the standards . Overall, the study showing suitability for all tests with the requirements of the aggregate that are used in concrete except simple deviation in the grain grading in the third and fourth station .