ملائمة أطيان لمايوسين من مواقع مختارة في محافظة صلاح الدين في تصنيع ركام خفيف الوزن

الملخص EN

Sampling sites, were selected from Injana and Fatha Formations.

The two studied areas are located within the province of Salah Al-Din.

The first one is of Fatha Formation clays in Nukhaila area (N) in the Himrin anticline which lies about 40 Km the south of Tikrit city.

The second is located within the southeast of the Khanoqa plunging anticline where Injana clays are well exposed.

he results of chemical analysis showed that the studied samples consist of SiO2, Al2O3, Fe2O3, CaO, MgO, TiO2 and SO3 as well as losses on ignition (L.O.I).

The physical properties of the studied samples revealed that these are of sandy clayey type and muddy clayey type and characterized by their medium plasticity and can be formed easily.

Dough is made from the studied clay samples after grinding it to size 1.00 and 0.77 mm.

then adding 15 – 18% of water and spheres are made manually to about 18 – 20 mm size.

The chemical analysis showed that the studied samples do not fall within the limits of swelling type therefore, mixtures are made from these clays by adding to them 7% sawdust, 2% of waste motors oil and fluxing materials such as Na-bicarbonates (NaHCO3) and spheres are made manually with the same size as above.

The evaluation test results are related to density, water absorption and apparent porosity of the firing and match global studies on light weight aggregate revealing the suitability of Fatha clays of Nukhaila area (N) for manufacturing light weight aggregate after adding 7% sawdust and 2% Na-bicarbonate.

The clays of Injana Formation (K) in Khanuqa area, however, has failed and showed no conformity with international results, especially regarding density.