Utilization of Clamshell as Filler and Addition of Sikafume on The Examination of High Quality Concrete

Various research and experiments in the field of concrete is done as an effort to improve the quality of concrete, materials technology and implementation techniques obtained from the results of research and experiment, it is intended to answer the higher demands on the use of concrete and overcome the constraints that often occur in the implementation of the concrete work in the site. The purpose of this research was to compare the value of compressive strength of normal concrete with compressive strength of concrete using SikaFume and clamshell. The compositions of the SikaFume mixture used in this research were 5% and 8% and for the shellfish used were also 5% and 8% of the weight of cement for all variations. The test specimens used were cylindrical, the planned concrete quality was 45 MPa tested at 21 days and 28 days with prior curing before testing. This research tested concrete with cylindrical test object for compression test of 30 specimens and consisted of 2 variations and each variation of 5 samples. From this research, it was found that the highest concrete compressive strength was found in the 8% SikaFume addition concrete mix and 8% shellfish at 28 days old that is 45.62 MPa when compared with the normal concrete.