 The study examined the effect of zeolite on the compaction properties and California bearing ratio, CBR, of cemented sand. It was found that the addition of zeolite reduced maximum dry density and increased optimum moisture content of the cemented sand. Additionally, the highest CBR values were observed when zeolite was added up to 30% of cement content. Correlations between CBR and maximum dry density were also identified. This article was authored by Geizem Noraznejad, Issa Shushpasha, Said Muhammad Mirasini and others.