In this study, the effect of using cattle bone ash (CBA) and waste glass powder (WGP) on the mechanical properties of mortar and concrete is investigated. The two materials were chosen because one of them is a source of silica oxide and the other one is a source of calcium oxide; where these two oxides are the main constituents of ordinary cement. The two materials were used as additives to the mortar/concrete mixtures.

For (CBA), the powder was added to the mortar/concrete mixtures as percentages of the cement by weight .The percentages of 0%, 1%, 3%, 5%, and 7% were used.

Like the CBA, (WGP) was added to the mortar/ concrete in the percentages of 0%, 1%, 3%, 5%, 7% and 10% of the cement weight.

Atomic absorption spectroscopy analysis test was conducted on CBA, while XRF analysis was conducted on WGP to obtain the chemical composition of each material . A total number of 150 cube specimens were tested in the experimental program and the results showed that both materials are beneficial to mortar and concrete from the compressive strength perspective. The results showed that the effect of CBA appears in the early ages of concrete while the effect of WGP appears in the long term.