Analisis LOI, IR, SO3, Compressive Strength Semen Porland Setelah Penambahan Wet Trass Dan Dry Trass di PT Cemindo Gemilang Medan

Abstract

LOI, IR, SO3 and compressive strength analysis have been carried out on Porland cement after the addition of wet trass and dry trass at PT Cemindo Gemilang Medan. LOI, IR, SO3 tests were carried out using the annealing method. Based on the anaysis results of porland cemen after adding wet trass, the LOI, IR, SO3 values were 11,4900%, 10.4868%, 2,1600% respectively and the result of porland cement analysis after adding dry trass, the LOI, IR, SO3 respectively are 10,8778%, 10,3778%, 2,0595%. The compressive strength ages 3, 7, 28 were 117.9172 kg/cm2, 221.4788 kg/cm2, 340.7701 kg/cm2. The compressive strength the result porland cement after adding dry trass at test ages 3, 7, 28 were 186.5779 kg/cm2, 233.7424 kg/cm2. Based on the data that has been obatined, it can be conclude that wet trass has LOI, IR, SO3 values which is higher than dry trass and compressive strength on dry trass is higher than wet trass. The longer the storage life, the compressive strength value will increase.