دراسة الأطيان الصالحة لصناعة الطابوق في منطقة النهروان

الملخص EN

Nahrawan clay deposits lies in Diyala governorate , 65 Km, NE of Baghdad , according to the previous work in this field, in which they study the reserve belong to category of investigation ( C2 & C1 ) , we choice the proper area to investigation of category (B) with drill net( 200x 200m ) to rise the amount of reserve.

The investigation work included drilling (116) boreholes of total depth ranges from (10.0-12.55m) , showed mainly clayey and silty deposits with little sand , and the typical borehole (648) represents all types of sediment in the area , and most of boreholes without sandy deposits , and all of these deposits is Quaternary sediment which is consist of two main sedimentary cycles ( the Pleistocene & Holocene ) .

Chemical analysis for (343) samples were done , and physical test carried on ( 143 ) samples , and all show suitable properties for clay brick industry .

the area of investigation covered ( 5.200.000 m2) involving ( 620.000 m2 ) containing soluble salt more than ( 3.5%) , which was separated from the total area , so the residual (4.580.000m2 ) had been taken to calculate the reserve , with depth of ( 10.76m) for the industrial clay bed.

The reserve calculations depended on the following chemical and physical Properties: The chemical analysis shows that , CaO ( 16.53%) MgO ( 4.65% ), SO3 ( 1.42%) , T.S.S.

(2.42%) , the physical properties are unfired properties Which contains Bulk density ( 2.09gm/cm3) , moisture content (20.95%) , linear dry shri.

(7.63%) , and fired properties which contain water absorption (18.8%) , linear shri.

(0.8%) volume shri.

(2.212% ), compressive strength ( 468.606Kg/cm2).

So the reserve of category (B) is ( 49.280.

800 m3 ) or (102.966.000 Ton) the physical test showed that the brick classified into class (A-B).