Research on micro limestone for concrete pavements produced with natural aggregates in the Erzurum region

The use of naturally formed aggregates in concrete pavements is an innovative and

sustainable solution both environmentally and economically. This study investigates

the usability of fine and coarse aggregates formed spontaneously in Oltu, Narman,

Pasinler and Uzundere in concrete pavements by improving the mechanical properties of concrete. In the study, the compressive strength, flexural strength, water absorption capacity and capillarity permeability of the concrete samples planned to be

used on concrete pavements were obtained by considering the contribution of these

aggregates. In addition, microscopic electron scanning analyzes (SEM) were applied

to visualize the internal cracks that may occur in the concrete. The test results

showed that the concrete formed with aggregates from Oltu and Pasinler regions had

the highest compressive, flexural and hardened unit weights. It has been concluded

that the concrete produced from Uzundere region, which gives results below 35 MPa

in terms of compressive strength, is not applicable on concrete pavements. In addition, considering the high compressive, flexural, unit weight and capillary permeability, it is predicted that the most suitable concrete design for the construction of concrete pavements is the P0 (concrete formed with aggregates from Pasinler region)

concrete sample.