Analisis Pengaruh Penambahan Abu Cangkang Kelapa Sawit (Palm Kernel Shell) Terhadap Kuat Tekan Beton Normal

Abstract

The current development of the construction industry in Indonesia has an impact on increasing the use of concrete as a building construction material. Various attempts have been carried out in research to obtain advances in concrete technology, i.e. the addition of admixture materials, one of the additives that can be used in the manufacture of concrete is palm kernel shell ash. In this study, palm kernel shell ash were used as an additive in normal concrete. This study meets the principles of environmentally friendly technology and is included in the direction of circular economy research. The type of research used in this study is laboratory material testing to find the effect and value of the addition of palm kernel shell ash on the density and compressive strength of normal concrete. The results showed that testing the specific gravity of normal concrete with the addition of palm kernel shell ash with variations of 0%, 1.5%, 3%, and 7% did not affect the specific gravity of normal concrete and had met the standard specific gravity of normal concrete that had been set. This is proven by the results of the specific gravity test which has the value of each variation of the addition of palm kernel shell ash ranging from 2265 Kg/m3 – 2306 Kg/m3 at each age of concrete. The results of the normal concrete compressive strength test with the addition of palm kernel shell ash have a good effect on the value of normal concrete compressive strength in the addition variation of 1.5%, this is proven by the results of research on the compressive strength of normal concrete of 161 Kg/cm2 at the age of 28 days, while the addition of palm kernel shell ash by 3% and 7% has a compressive strength value below the addition of palm kernel shell ash variation of 1.5%.