| dc.description.abstract | Increasing population growth is directly proportional to the fulfillment of
food needs and the resulting waste. This increase is characterized by livestock
production that continues to increase every year due to the large market demand
for food sourced from cattle. One of the waste products resulting from this
increased demand is the remaining cow dung. The impact of cow dung is
environmental pollution and can endanger the health of livestock and livestock
owners. On the other hand, the increasing consumption of cement also causes
environmental pollution. This pollution is caused by cement production processes
that are less environmentally friendly and is characterized by air pollution from
toxic gases produced during cement production. As a result, a technological
innovation emerged to process cow dung into CDA (Cow Dung Ash) as a cement
substitute to produce environmentally friendly concrete. CDA is obtained from the
process of drying, roasting, roasting, and filtering cow dung. This study aims to
calculate the compressive strength of concrete resulting from the substitution of
CDA for cement, calculate the optimal substitution of CDA use, and determine the
effect of CDA on concrete. The planned compressive strength was 20 MPa with a
28-day soaking age. The CDA variations used were 0%, 3%, 5%, 7%, 9%, and
11%. The optimum CDA substitution in concrete is at a percentage of 3% at 20.76
MPa and 5% at 20.09 MPa | en_US |
