Abstract:
Using cement as an adhesive material poses many problems, such as the relatively high cost.
Many innovations have been made to find a substitute for cement or sand in the manufacture of concrete
mixtures. This study tries to determine the utilization of making gases balloon waste (carbide waste) in the form
of powder as a cement substitute, and medical mask waste cut into small length as a substitute for sand in
concrete mixtures. the average compressive strength of the sample aged 7 days for a concrete composition of
0%, 2.5%, 5% under the design compressive strength, for the 7% obtained is 26.12 MPa, and for the sample
aged 28 days it is 30.28 MPa immersed in fresh water, while samples immersed in seawater had an average
compressive strength value at 7 days and 28 days of 13.91 MPa and 17.31 MPa, respectively. From these
results it is concluded that the mixture of carbide waste and medical mask waste 7% produces the greatest
compressive strength of concrete.
