Investigation of the usability of lead mine waste as concrete aggregate

The purpose of this study is to investigate the usability of concrete as concrete aggregates produced from the economically not feasible lead waste products (tallow) in the mines of removed lead ore. In this context, the physical chemical, mineralogical and petrography characteristics of rocks which are used as concrete aggregates are determined. Concrete strength classes of C16, C25 and C35 replaced with 25%, 50% and 75% rates of limestone were prepared with lead mine waste. On the prepared concrete examples, water absorption, apparent porosity, density, compressive strength, flexural strength, static elasticity modulus, poisson's ratio, non-destructive testing methods "surface roughness (Schmidt hammer), ultrasonic pulse velocity", freeze thaw resistance, abrasion resistance, capillarity and carbonation tests were performed. As a result; the ratio of tallow in concrete aggregate positive effect on density, compressive strength, flexural strength, static elasticity modulus, freeze thaw resistance, abrasion resistance and compressive strength with non-destructive testing methods "surface roughness (Schmidt hammer), ultrasonic pulse velocity". It was seen that as tallow ratio was increased the values of water absorption, ratio of the apparent porosity, poisson's ratio, capillarity and carbonation were decreased. Keywords: The use of waste, Physical properties of concrete, Lead mine waste.