Study of Limestones from the Nfayil Formation in Bahr Al-Najaf Depression and Suitability for Thermal conductivity

Abstract

The evaluation of the Nfayil limestones in Bahr Al-Najaf Depression asconstruction materials was done on 15 sites distributed over a region. The studyincluded field and laboratory aspects. The field side included collecting informationabout the study area and samples. As for the laboratory side, laboratory tests wereconducted to study the thermal conductivity of samples by a device called Lee’s discin the Tikri University. The thermal conductivity results ranged between 2.34 and0.27. The rocks are of high thermal insulation at low temperatures and lowinsulation at high temperatures according to the specifications of the suitability oflimestone for thermal conductivity standards (ASTM C 1057-03-2010).