Comparative Investigations of Some Properties of Lightweight Cement Concretes Containing Siliceous Fly Ash

摘要

In the article the possibility of lightweight cement concrete manufacturing with use of binder in which part of cement was replaced with siliceous fly ash Class F was presented. Lightweight aggregate Pollytag and Keramzyt was used. Total amount of binder was 400 kg/m~3 with w/b = 0.5. Mechanical properties was tested as well as properties affecting durability of concrete. Replacing part of cement with fly ash improved concrete resistance on chloride ion migration, reduced compressive and tensile strength of concrete and increased carbonation depth.