GEOLOGI DAN ANALISIS KORELASI SIFAT FISIK TERHADAP NILAI UJI KUAT TEKAN BATU ANDESIT PADA DAERAH SIDOHARJO DAN SEKITARNYA KECAMATAN DORO KABUPATEN PEKALONGAN PROVINSI JAWA TENGAH

Abstract

Andesite is a type of volcanic igneous rock, extrusive, of medium composition, with an aphanitic to porphyritic texture that is widely distributed on the island of Java. Andesite research was carried out to determine the influence of rock physical properties on the uniaxial compressive strength of andesite lava rock by testing the physical properties and mechanical properties. Analysis of the physical properties of rocks is carried out to identify dimensions, bulk weight, air content, porosity and degree of saturation. Analysis of the mechanical properties of andesite rock obtains UCS values. The physical properties test and the mechanical properties test on andesite rock tested 4 andesite rocks where the rocks came from 2 different sources, namely Khuluk Perbata and Khuluk Kendeng. The andesite rock samples at Khuluk Perbata obtained an average unit weight of 2.6985 gr/cm3, the andesite rock at Khuluk Kendeng resulted in an average unit weight of 2.6615 gr/cm3, the porosity of the Khuluk Perbata andesite rock averaged 17.045% of the rock. andesite in Khuluk Kendeng has an average porosity of 21.595%, the compressive strength value of andesite rock in Khuluk Perbata averages 187.385 MPa, while the compressive strength value of andesite rock in Khuluk Kendeng averages 163.3 MPa.

Keywords: Andesite, Physical Properties, Compressive Strength, Khuluk Perbata, Khuluk Kendeng.