Abstract
Higway is an important infrastructure facility to support economicdevelopment in a region. The pavement construction of WakatobiRegency is known to use materials imported form Palu City andAmbon City. In Wakatobi, there are actually quite a lot of localmaterials, such as send and limestone or limeston, but they cannotbe used optimally. The puepose of this study wa to determine the characteristics ofKomala limeston and the characteristics of bottom ash taken fromthe Nii Tanasa PLTU and how the ideal mixture composition betweenthe two materials combined. The results showed that the characteristics of limestone/ limestonewith the composition with the composition of broken stone 55% +45% boottom ash, 50% broken stone + boottom ash 50% and 45%broken stone + 55% boottom ash obtained coarse agregate density =1,491%, weight type of fine agregate (boottom ash) = 14,95% witheach abrasion = 25,30% for testing the performance of an idealmixture of Komala limeston and Nii Tanasa boottom ash with acomposition of 55% broken stone + 45% boottom ash, CBR on γdMax. 61,76 % have met the specifications. Meanwhile thecomposition of 50% crushed stone + boottom ash 50% and 45%broken stone + 55% boottom ash does not meet the specifications ofBina Marga 2010.
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