Analisa Karakteristik Campuran Lataston HRS-WC Dengan Menggunakan Material Dari Quarry Noefefan Suco Lifau Sub-Distrik Pante-Macassar Distrik Oe-Cusse Timor-Leste

TA'U, David Caltrez De Jesus Deny (2022) Analisa Karakteristik Campuran Lataston HRS-WC Dengan Menggunakan Material Dari Quarry Noefefan Suco Lifau Sub-Distrik Pante-Macassar Distrik Oe-Cusse Timor-Leste. Undergraduate thesis, Universitas Katolik Widya Mandira Kupang.

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Abstract

Hotmix asphalt or also known as Concrete Asphalt, is a mixture of coarse aggregate (stone screening/split stone), fine aggregate (stone ash), filler, using asphalt binder in conditions of high heat temperature with a careful composition and regulated by technical specifications. . Hot Mixed asphalt (Hot Mix), one of which is a thin layer of asphalt concrete (Hot Rolled Sheet, HRS), hereinafter referred to as HRS, consists of two types of mixtures, HRS Foundation (HRS-Base) and HRS Lapis Aus (HRS Wearing Course, HRS-WC). ) and the maximum aggregate size of each mixture is 19 mm. HRS-Base has a larger proportion of coarse aggregate fraction than HRS-WC (Specification of Highways, 2018). The material for the thin layer mix of asphalt concrete (Lataston) consists of coarse aggregate, medium aggregate, fine aggregate and filler derived from the Stock Pile of PT. Lifau Indah Construction.,Lda quarry Noefefan, while asphalt from PT. Pertamina with asphalt penetration of 60/70. The results of the research on the HRS-WC lataston mixture using materials from the Noefefan quarry showed that the estimated asphalt content (Pb) was 7.0% with 5 different variations of asphalt content, namely 6.0%, 6.5%, 7.0%, 7.5% and 8.0%, from the test results in the PUPR NTT laboratory, the composition of coarse aggregate is ” 6.00%, medium aggregate is ” 16.00%, rock ash 47.00%, natural sand 29.00% and 2.00% filler. From the results of the aggregate composition, the optimum asphalt content value (KAO) is 6.65%, the maximum specific gravity of the mixture (Gmm) is 2.415, the specific gravity of the asphalt is 1.030, the bulk density of the aggregate is 2.643, the marshall stability is 931.090 Kg, the marshall melt is 3.419 mm, the marshall quotion (MQ) 272.807 Kg/mm, voids in mixture (VIM) 4.668%, voids in aggregate (VMA) 18.578%, voids filled with asphalt (VFA) 75.114% and density 2.314 Kg/cm³. It can be concluded that the material from the quarry meets the standards of the Revision 3 of 2018 Highways Specifications, namely the material can be used for a mixture of thin layers of asphalt concrete (Lataston).

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