مرکز منطقه ای اطلاع رساني علوم و فناوري - Investigation of the Expanded Ability of Kalecik Ankara Clay Feature

Abstract :

Some types of clay are capable of being expanded. These 1100-1300 ° C when heated in (shock method), they turn into a mass full of bubbles. The volume of gas output and aggregate increases about 5- 6 times during expansion process. Expanded clay aggregates are preferred for lightweight construction materials because of both light and hard outer surface sintered. Such a choice because the reduction of dead load, but also has the advantage that the desired level of compressive strength. This study has studied to determine the expansion behavior of the clay samples taken from the Ankara-Kalecik Tekebel locality. About 3000 m2 clay pitch of 350 to 400 kg samples were taken from three different points of 1 mm were sieved off. Taken clay samples were passed through a 1mm sieve. Sieve the pastry dough was made into the clay with water. Dough made from raw aggregates, at temperatures increasing from 900 °C 50°C to 1250°C 5 is heat treated for periods of 10 and 15 minutes expanded clays were produced this heat treatment. Concrete samples (100*100*100 mm) were produced with this aggregate, and their compressive strength and specific bulk density were investigated. The aggregate subjected to heat treatment in 10 minutes at 1150 °C provided the desired properties. Because of a 3.2% of the expansion rate and density of 0.970 g / cm³ and the independent spaces in the aggregate, it was observed that the produced aggregates are capable of floating on water. Furthermore, 28 day compressive strength and specific bulk density of concrete produced with expanded clay aggregates were 44, 9 MPa and 1,492 g/cm³, respectively.