Using posibilities of the thermal power plant ash collected by wet process for concretes preparation

Abstract

The dump ashes (resulting from collecting and transporting by the wet process of the thermal power plant ashes) represent a pollution agent, occupying great surfaces from the agricultural land and are difficult to recycle. Replacing the aggregate’s fine part from concrete is contributing to replacing the natural sand that nowadays is a deficit. This study presents the results of some testing on concretes where the pit natural sand was partially or entirely replaced with thermal power plant ashes. The studied concrete characteristics modifications refer to the mechanical strengths. The strength losses can be compensated by cement dosage increasing or by using superior class cement.