• Tidak ada hasil yang ditemukan

Modifikasi Resipren dan Bitumen Dalam Peningkatan Kekuatan Aspal

N/A
N/A
Protected

Academic year: 2017

Membagikan "Modifikasi Resipren dan Bitumen Dalam Peningkatan Kekuatan Aspal"

Copied!
2
0
0

Teks penuh

(1)

v

MODIFIKASI RESIPREN DAN BITUMEN DALAM PENINGKATAN

KEKUATAN ASPAL

ABSTRAK

Modifikasi Resipren dan Bitumen dalam Peningkatan Kekuatan Aspal telah

dilakukan. Aspal modifier dibuat dalam 7 jenis variasi perbandingan aspal,

bitumen, dengan resipren yang telah dilarutkan dengan toluene sebesar 75:20:5 ;

70:20:10 ; 65:20:15 ; 60:20:20 ; 55:20:25 (v/v/b) dalam 100 ml, penambahan

agregat pasir halus 300 gram dan agregat kasar kerikil 50 gram, dan diproses

dalam ekstruder pada suhu 150oC. Sifat mekanik dan sifat termal aspal modifier yang diuji meliputi kuat tekan, daya serap air, morfologi dengan TEM. Hasil

karakterisasi menunjukkan bahwa campuran aspal, bitumen, dan resipren dengan

perbandingan 55 : 20 : 25 efektif dalam meningkatkan sifat mekanis dari

campuran aspal dimana dihasilkan kekuatan tekan maksimum sebesar 0,974 Mpa.

Sifat fisik menghasilkan penyerapan air sebesar 0,60%. Hasil ujimorfologi dengan

TEM memperlihatkan adanya perbedaan setelah bitumen ditambahkan kedalam

campuran aspal dan resipren.

Kata kunci: Aspal, Bitumen, Resipren, Sifat Mekanik, Sifat Morfologi

(2)

vi

MODIFICATION OF RECIPRENE AND BITUMEN IN THE IMPROVEMENT OF ASPHALITY STRENGTH

ABSTRACT

Modification of Resiprene and Bitumen in Increased Asphalt Power has been done. Asphalt modifier is made in 7 ratio variation of asphalt, bitumen, andreciprene dissolved in toluene which are 75:20:5 ; 70:20:10 ; 65:20:15 ; 60:20:20 ; 55:20:25 (v/v/b) in 100 ml, the addition of 300 gram fine sand aggregate and 50 gram gravel aggregate. The mixture was processed in the extruder at 150oC. The mechanical and thermal properties of modified asphalt which include compressive strength, water absorption and the morphology were done in TEM analysis. The results shows that the mixture of asphalt, bitumen, and reciprene with a ratio of 55 : 20 : 25 was effective in improving the mechanical properties of the asphalt mixture which produced a maximum compressive strength of 0,974 MPa. Physical properties shows 0,60% water absorption ability. The results of morphological test with TEM showschanges after the addition of bitumen to the mixture of asphalt and reciprene.

Keywords: Asphalt, Bitumen, Resipren, Mechanical Properties, Morphological Properties

Referensi

Dokumen terkait

The properties of polymer roof that analyzed to test physical properties such as water absorption and porosity, mechanical properties including impact test and bending

dalam meningkatkan sifat mekanis dari campuran aspal dimana dihasilkan.. kekuatan tekan maksimum sebesar 0,59

Darwin Yunus Nst, MS selaku dosen pembimbing II yang telah membantu dan memotivasi penulis untuk menyelesaikan skripsi ini, terima kasih juga kepada Dr.. Cut

A compressive model for predicting thermal cracking events in asphalt pavements that accounts for the continuous evolution of the asphalt mixture properties with oxidative ageing over time has been developed. The model also considers temperature-dependent coefficient of thermal contraction (CTC) for the calculation of thermal strain in the asphalt layer. An improved pavement temperature profile estimate has been employed in the model to predict the required hourly pavement temperature data. The temperature data at the desired depth in the asphalt layer are then used in a kinetic-based ageing model to predict growth in the carbonyl (CA) of the asphalt binder over time. Using a refined one-dimensional constitutive linear viscoelastic relationship, the hourly thermal stress is then computed considering the changes in the viscoelastic and thermal contraction properties of the asphalt mixture with the increase in CA of asphalt binder used in the mix. The required age-dependent relaxation modulus is obtained from the dynamic modulus (E* ) of asphalt mixtures (i.e. in complex domain) at various ageing levels. Also, the required age and temperature-dependent CTC is obtained from thermal strain measurements of varied aged asphalt mixtures using the uniaxial thermal stress and strain test (UTSST). The cracking events are detected over the service life by comparing the predicted thermal stress with the age-dependent crack initiation stress (CIS) of the asphalt mixture. The age-dependent CIS is obtained from the UTSST results for different ageing periods. Preliminary analysis of the model revealed the accuracy of the model in a realistic prediction of the accumulative thermal cracking events for the asphalt pavement with different air void levels (4, 7 and 11%) and with unmodified (PG64-22) and polymer-modified (PG64-28) asphalt binders in a selected