Various studies and experiments in education of concrete are carried out in
an effort to improve the quality of concrete, technology and every technique that
obtained from experiment and research its intended to answer the high-demands
against the use of concrete and overcoming the obstacles that often occur in the
implementation of work in the field and there is a way to increase the strength of
concrete is increase the compaction, which is minimizing the pores or cavities that
form in the concrete. Using of added naterials (admixture) can help solving the
problem ehe. The purpose of this study is to determine the compressive strength of
concrete with variations Master Glenium Ace 8111 in addition and know how much
optinum amount of master glenium added ingredients 8111 in order to achieve
maximum compressive strength concrete at the age of 7 days. Mix composition
superplasticizer used in this experiment are 0%, 0.1%, 0.2%, 0.3% the weight
cement for all variations the specimen used is a cylindrical shape, planned concrete
quality 45 MPa which was tested at the age of 28 days with treat before it be tested.
this experiment tested the concrete with a cylindrical specimen for the compression
test ( diameter 150mm and height 300mm ) as many 36 samples and consist of 4
variations and each variation of 3 samples. From the research, it was found that
the high compressive strength of concrete was found in the concrete mixture 0,3%
additives, which 29,09MPa and lowest concrete compressive strength found in the
concrete mixture 0% which 20,13MPa. That addition additives have high
compressive strength than the mixed variation concrete other additives. If mixtures
with high levels of discomfort have high risk of bleeding, and this happened for all
concrete samples