This document summarizes research into using tamarind kernel powder as an additive in concrete to improve its compressive strength properties. The researchers determined an optimal dilution factor for the tamarind kernel powder solution and used it in concrete mixes at different percentages as an admixture. Specimens were tested after 7 and 28 days to evaluate the compressive strength. The results showed significant improvement in compressive strength when tamarind kernel powder was used, allowing for more slender concrete structures of equivalent load bearing capacity. Further testing is recommended with varying dilution factors and in different conditions to validate the use of this natural and cheaper admixture.