PENGARUH ABU TEMPURUNG KELAPA SEBAGAI VARIASI KOMPOSISI TERHADAP KUAT TEKAN BETON K250

Abstract

The use of coconut shell ash as a concrete mixture has a positive impact on the environment, in addition, coconut shell has a better content than coconut shell glass shards. The main purpose of this study was to determine and analyze how much influence Coconut Shell Ash has on changes in the compressive strength of K250 concrete, with the method used is an experimental research method, namely the manufacture of concrete specimens using cylindrical molds with a diameter of 15 cm and a height of 30 cm. by applying coconut shell waste as a mixture with a mix design ratio of 0%, 3%, 5% and 7% which refers to the ratio of the concrete mix with the quality of K-250. The conclusion of this research is that concrete with the addition of Coconut Shell Ash with variations of the addition of 0%, 3%, 5%, 7% produced a compressive strength of 28 days in each variation of the mixture as follows: Normal concrete (0%) 273.65 Kg/cm2 , Concrete with the addition of 3% coconut shell ash obtained an average compressive strength of 209.48 Kg/cm2, Concrete with the addition of 5% coconut shell ash obtained an average compressive strength of 249.12 Kg/cm2, Concrete with 7% coconut shell ash addition obtained an average compressive strength of 175.51 Kg/cm2.