REVIEW OF K-250 CONCRETE COMPRESSIVE STRENGTH USING MIX DESIGN MANUAL ON DEVELOPMENT PROJECTS CONTINUED TALUD AIRPORT OF SYUKURAN AMINUDDIN AMIR LUWUK
Mukhtar Lutfie1, and Adryan Winardi Latuba2

1,2Program Studi Teknik Sipil Fakultas Teknik Universitas Muhammadiyah Luwuk

Abstract

Compressive strength is the stress that occurs in the test object when the load is applied until the test object is destroyed. Before making the test object, the first stage is to do a slump test. If it meets the standard specifications then manufacture the test object. The specimens were dried in the sun for 7, 14, and 28 days without any vibrations then the samples were allowed to stand until they hardened and did not crumble. At the mixing stage, it is still done manually by using the volume ratio of the excavator bucket. This study aimed to determine whether the compressive strength of concrete reaches k-250, using qualitative research using the method of compressive strength of concrete k-250. The results obtained in this study are the longer the test object is dried, the greater the compressive strength obtained. The highest compressive strength value was obtained from the test on June 11, 2022, which was 461.35 kg/cm2. Whereas in other tests it decreased, but in other tests, it has shown a value that is suitable for use (suitable for embankment buildings) and meets the quality requirements for compressive strength in terms of the standards that have been set and the values obtained have met the category based on the standard SNI 03 1974-1990.

Keywords: Slump Test, Test Object, Compressive Strength, Talud.

Topic: Engineering