Pengaruh Bentuk Butir Agregat Kasar Pada Campuran Hot Rolled Asphalt (HRA) Ditinjau Terhadap Nilai Kepadatan Dan Modulus Kekakuan

Nuansari, Lussy and , Ir. Agus Riyanto, MT (2019) Pengaruh Bentuk Butir Agregat Kasar Pada Campuran Hot Rolled Asphalt (HRA) Ditinjau Terhadap Nilai Kepadatan Dan Modulus Kekakuan. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The density and strength of a pavement layer is very important and must be considered in the construction of highway projects. Good material quality is needed in order to obtain results in accordance with existing requirements. Generally in highway flexible pavement work, the use of flaky and round coarse aggregates is avoided because when receiving large loads it will be easily destroyed, this condition will cause reduced strength and also density on the pavement itself. Therefore this Final Project analyzes the influence of the characteristics of the aggregate grain form on a Hot Rolled Asphalt (HRA) mixture. This research was conducted at the Civil Engineering Highway Laboratory of the University of Muhammadiyah Surakarta based on experiments on several samples by conducting secondary data analysis, making mix designs, and testing samples, so that the values of density, bitumen stiffness (Sbit), and mix stiffness (Smix) were obtained. Testing is done by making different tests with variations in the shape of coarse, round and flaky aggregate grains and cubes. With an aggregate proportion of 25%, 50%, and 100% of coarse aggregate total. Using Optimum Asphalt Content of 6% (Galang, 2012). Based on the results of the study showed the shape of coarse grain round shape, flaky, and cube on the values of density and stiffness modulus in the mixture of Hot Rolled Asphalt (HRA). Especially in the aggregate the shape of the cube is very real with respect to the value of density and modulus of stiffness, where the value will be higher than the percentage of the shape of the item added. This is because the aggregate cube has excellent interlocking properties between aggregates. Therefore the resulting density increases, and the mixture's stiffness modulus is also higher. The aggregate density results of Cube 25%, round 25%, flaky 50% = 2.013 gr / cm3; cube 25%, round 50%, flaky 25% = 2.093 gr / cm3; cube 50%, round 25%, flaky 25% = 2.107 gr / cm3; cube 100%, round 0%, flaky 0% = 2.115 gr / cm3. Smix results on aggregate Cube 25%, round 25%, flaky 50% = 1.0x109 N / m2, cubes 25%, round 50%, flaky 25% = 1.5x109 N / m2, cubes 50%, round 25%, flaky 25% = 2.5x109 N / m2, cube 100%, round 0%, flaky 0% = 4.7 x 109 N / m2. Based on the results of Marshall Porperties the optimum aggregate content in the rounded Hot Rolled Asphalt (HRA) mixture is 42% and flaky aggregate is 40%.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	Agregat bulat pipih kubus, Hot Rolled Asphalt (HRA), Nilai kepadatan, Modulus Kekakuan
Subjects:	T Technology > TE Highway engineering. Roads and pavements
Divisions:	Fakultas Teknik > Teknik Sipil
Depositing User:	LUSSY NUANSARI
Date Deposited:	13 Feb 2019 03:04
Last Modified:	13 Feb 2019 03:04
URI:	http://eprints.ums.ac.id/id/eprint/70975

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