| dc.description.abstract | The important component in the building is the wall. Lightweight brick is
an alternative material commonly used to replace red brick as a wall
material. The use of lightweight bricks is considered more efficient and
environmentally friendly because it does not require the excavation of clay
and firing furnaces. In order to reduce current environmental issues, the
use of waste as a construction material becomes an ideal solution to be
applied. This experiment was conducted to determine the effect of using
sawdust waste as a partial replacement for sand in the production of
environmentally friendly Cellular Lightweight Concrete bricks. To achieve
good bonding in the mixture of waste-based materials, the addition of quick
lime (CaO) was used as a partial replacement for cement, which is
considered to strengthen the mixture bonding in concrete. In this
experiment, variations of sawdust mixture used were 2%, 4%, 6%, 8%, and
10%. The addition of quick lime used was 5% in each sawdust mixture
variation. Tests conducted included bulk density and water absorption with
test specimens measuring 20cm x 20cm x 20cm and compressive strength
with test specimens measuring 10cm x 10cm x 10cm referring to SNI 8640-
2018. The use of sawdust in the mixture has an effect on decreasing the
compressive strength of lightweight bricks as the percentage of sawdust
used increases. However, the addition of 5% quick lime can increase
compressive strength of lightweight bricks with sawdust mixture by 17,7%
average. | en_US |
