Engineering Characterization of Local Limestone and Marlstone Aggregates in Koya Area as a Case Study

Abstract

There are huge limestones and marlstone outcrops surrounding the Haibat-Sultan Mountain in the Koya area. Knowledge of the physical, mechanical, and chemical properties of aggregates is important when using them in the construction industry. In this study, the usability of limestone and marlstone as sources of aggregate for construction purposes and different engineering applications was investigated. Results were carried out on the rocks limestone and marlstone from Fatha Formation in the Koya area as a case study. The engineering characteristics that have been mentioned in this study include uniaxial compressive strength (UCS), Los Angeles abrasion value (LAAV), aggregate impact value (AIV), aggregate crushing value (ACV), dry density, porosity, water absorption, and moisture content. The simple non-linear regression analysis has defined mutual relations between laboratory tests. The aggregate degradation properties of the aggregates showed strong correlations with the uniaxial compressive strength of limestone. The results indicated that it is possible to use this type of crushed limestone in concrete and road construction as a base course, while the marlstone aggregates are suitable for subbase courses in road constriction and non-structural concrete application.

Keywords

• limestone, marlstone, fatha formation, aggregate degradation, engineering properties