Pengaruh Penggunaan Pasir Besi Lumajang pada Campuran Aspal Beton AC-WC sebagai Pengganti Agregat Halus

Abstract

Iron sand is one of the results of natural resources in Indonesia, the use of iron sand Lumajang is expected to increase strength and durability on the pavement bending . In this study is an experiment to find out the characteristics of Lumajang iron sand to subsite Natural sand with percentages of 0%, 20%, 40%, 60%, 80%, 100% on ac-wc concrete asphalt mixture with Marshall characteristics. After testing the material design of optimum asphalt mixture with two methods, namely mathematical method and lab chart method obtained optimum asphalt content value of 6.2%. Then done comparison of results between standard test objects and modified test objects Natural Sand with marshal test results. The utilization of Lumajang iron sand as a substitution of Natural Sand with natural sand characteristics obtained the results of type 2.5 weight and the distribution results of sieve analysis #8 to #200, while the test results of the characteristics of iron sand Lumajang as a comparison with the results of type 4.5 weight and the distribution results of sieve analysis #50 to #200. Marshall Stability yield increased 30.7%, Flow increased 8.43% VIM decreased 95.47%, VMA decreased 23.97%, VFA increased 29.02%, Density increased by 3.94%.