Tóm tắt:

This paper presents the use of rice husk ash that is recovered from burning rice husks in a local ceramic kiln. In this study, rice husk ash is used as a replacement for cement in different dosages of 0%, 5%, 10%, 15%, and 20%. The strength of the specimens was assessed at 7, 28, and 56 days of age. According to the results, rice husk ash added in amounts ranging from 5% to 15% performed equivalent to ordinary mortar in compressive strength.