Pengaruh Variasi Penambahan Limbah Plastik Terhadap Kekuatan Tekan Batako Dalam Upaya Pemanfaatan Limbah

Abstract

At this time, plastic is a material that is needed by the public at large and the impact
is also extraordinary after the plastic is used in daily life which can cause serious
problems if the management is not done properly. The problem of plastic waste does
not only occur in the city of Semarang, but also in other cities, so the Ministry of
Environment and Forestry has implemented a pay-for-use plastic bag program in
the short term. But this is only to deal with problems in the short term. In the long
term, it will not solve the problem of "plastic waste", because the policy actually
encourages people to buy plastic that is of course will add a new burden to the
people to buy it. The results showed that the compressive strength of a hollow
concrete brick (brick) with a model / type BN d.d. B1,0 there is a decrease in the
average compressive strength. The highest at the addition of 0.10% with
compressive strength on average reached 35.21 kg / cm², in general the decrease
occurred in the addition of plastic each different from 0.10% to 1.0% of the weight
of sand with the lowest compressive strength of 21 , 16 kg / cm². Regression
equation obtained Y = - 0.119 X² + 0.008 X + 35.53 with a correlation value of R² =
0.987, meaning that with the addition of plastic has a very strong influence on
compressive strength. So that it can be obtained an illustration that by adding
plastic to the manufacture of hollow concrete brick (brick) can affect the
compressive strength decreases. Despite the decline, the quality of the brick is still
good and above the lowest quality Level IV with compressive strength above 2.0
MPa which may still be made with variations Plastic with a composition greater
than 1% or comparative composition of Portland Cement (PC) with sand is made
more small (<1 PC: 7 Sand), with the hope that this Plastic waste can be utilized
optimally.

Kata kunci : plastic waste, brick making, waste utilization