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Pengaruh Kadar Aspal Efektif dan Tebal Selimut Aspal Terhadap Proporsi Rongga pada Campuran Laston: Influence of Effective Asphalt Content and Film Thickness on Voids Proportion of Asphalt Concrete Ratna Yuniarti; Made Mahendra; Hasyim Hasyim; Rohani Rohani; I A O Suwati Sideman
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 1 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i1.410

In the mixing process between asphalt and aggregate, absorption of asphalt by the aggregate occurs through the pores of the aggregate. The volume of asphalt not absorbed by the aggregate can be defined as effective asphalt content which determines the percentage of airspaces in the compacted mix. The proportion of voids formed in the mixture contributes to the durability of the mixture against temperature and climate conditions. This study aims to examine the effect of effective asphalt content and the asphalt film thickness on the voids proportion in asphalt mixture. Based on the analysis, it can be concluded that the particle size distribution of the aggregate affects the total surface area of the aggregate in the mixture and the pores of the aggregate affect the effective percent of asphalt content. Aggregate with a small grain size produced a larger total surface area of aggregate. Meanwhile the use of aggregate with small pores produced a higher effective percent of asphalt content. The higher the effective asphalt content and the asphalt film thickness, the larger the voids in mineral aggregate and the voids filled with bitumen. In contrast, the voids in the mixture decreases with increase the effective asphalt content and the asphalt film thickness. In all the voids proportions analyzed, the effective asphalt content and the asphalt film thickness have a very significant effect.

Pengaruh Karakteristik Aspal Modifikasi Getah Pinus Terhadap Peluruhan Campuran Aspal Porus: Effect of pine resin modified asphalt on the draindown of porous asphalt mixture Ratna Yuniarti; Made Mahendra; I D M Alit Karyawan; Desi Widianty; Fera Fitri Salsabila
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.531

A porous asphalt mixture is a type of pavement that allows water to drain through, thereby reducing the amount of surface runoff and improving road safety. To drain water quickly, porous asphalt is dominated by coarse aggregate so that the voids in the mixture become larger. Draindown, which is the loss of asphalt binder from the mixture, can cause blockages and reduce the ability of the pavement to drain rainwater. The use of modified asphalt is expected to increase the bonding between the asphalt and aggregate to withstand loading but meet draindown requirements. The pine resin used as an asphalt modifier in this study was 2%, 3%, 4%, and 5%, whereas the percentage of gumrosin was 4% by weight of the modified asphalt. Modified asphalt testing includes the penetration, softening point, ductility, and weight loss. The mixing process of the aggregate with modified asphalt was carried out at 160 °C with asphalt contents of 4.5%, 5%, and 5.5% by weight of the asphalt mixture. The results showed that the penetration value, ductility, and weight loss of the modified asphalt increased, while the softening point decreased with the addition of pine resin. In general, the physical properties of the modified asphalt have a significant effect on the draindown value. Referring to the draindown specifications of the porous asphalt mixture (0.3 %), this requirement is fulfilled in all modified asphalt compositions and asphalt contents used in this study.

Peningkatan Kinerja Campuran Beraspal Panas dengan Penggunaan Aspal Modifikasi Zeolit Ratna Yuniarti; Made Mahendra; I Dewa Made Alit Karyawan; Desi Widianty; Fera Fitri Salsabila; Fauzi Gusnaldi; Erlina Erlina
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 4 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i4.937

Damage to road pavement construction before reaching its planned lifespan can be caused by asphalt being easily oxidized and vulnerable to sunlight exposure. Therefore, materials resistant to high temperatures should be used. One effort that can be done is modifying asphalt with zeolite. Zeolite contains silica, which can increase the binding strength between asphalt and aggregate and reduce the sensitivity of asphalt to temperature. The aim of this study is to analyze the characteristics of zeolite-modified asphalt with 3%, 5%, and 7% of the modified asphalt weight and its performance when applied to hot-mix asphalt. Asphalt characteristic tests include penetration tests, softening points, flash points, ductility, loss on heating, and specific gravity. Hot mix asphalt tests include the ability of the mixture to withstand loading, melting, Marshall quotient, Marshall immersion, and retained stability index. Based on the analysis, it can be concluded that the use of zeolite as an asphalt modifier increases the resistance to temperature changes of modified asphalt. The performance of hot-mix asphalt improved when using zeolite-modified asphalt compared to traditional asphalt mixtures. The recommended percentage of zeolite is 5% of the weight of modified asphalt, and the residual strength index achieved is 91.1%.

ANALISIS KINERJA SIMPANG BERSINYAL AKIBAT MARKA JALAN YELLOW BOX JUNCTION PADA SIMPANG EMPAT TANAH AJI, KOTA MATARAM MADE MAHENDRA; HASYIM HASYIM
Ganec Swara Vol. 19 No. 1 (2025): Maret 2025
Publisher : Yayasan Al-Amin Qalbu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59896/gara.v19i1.224

One of the intersections in Mataram City that uses Yellow Box Junction markings is at Simpang Empat Tanah Aji, which is a point prone to traffic jams in Mataram City due to its role as an access road to the center of community activities. Therefore, this study was conducted to determine the intersection performance at Tanah Aji Intersection Four due to Yellow Box Junction markings based on PKJI 2023, determine the percentage of violations of Yellow Box Junction markings, determine the percentage level of public understanding of Yellow Box Junction markings and determine whether the Yellow Box Junction markings at Tanah Aji Intersection Four are in accordance with Ministerial Regulation No. 34 of 2014. From the results of the intersection performance analysis, the DJ = 2.81 value is obtained for existing traffic conditions and DJ = 2.79 for traffic conditions due to the Yellow Box Junction markings. Based on PKJI 2023, the value of DJ> 0.85 indicates poor performance due to the traffic flow at the intersection approaching its saturation flow so that it can be judged that the Yellow Box Junction markings at the Tanah Aji Four Intersection cannot improve intersection performance. From the observation of violations, the percentage of violators is 13.82% with the percentage of motorcycle violators 11.36%, passenger cars 2.39%, and heavy vehicles 0.07%. From the results of the online questionnaire, the level of public understanding of the placement of markings at the Tanah Aji Four Intersection is 84.25%, definition 50.5%, function 49.75%, how to use 45.75%, and legal aspects 16.75%. There were also 44% of people who stated that they had violated and 67% of people considered these markings effective in overcoming congestion. From the results of observations and measurements related to the suitability of the markings to Ministerial Regulation No. 34 of 2014, the results obtained are not suitable for a straight line width of 30 cm because it exceeds the applicable provisions and there is also the center of the markings covered by a new layer of pavement.

EVALUASI KINERJA SIMPANG TAK BERSINYAL BENGKEL KECAMATAN LABUAPI KABUPATEN LOMBOK BARAT DENGAN MENGGUNAKAN APLIKASI PTV VISSIM: Evaluation Of The Performance Of Unsignalized Intersection In Labuapi District Workshop, West Lombok Regency Using The PTV VisSim Application Made Mahendra; Hasyim Hasyim
Ganec Swara Vol. 19 No. 2 (2025): Juni 2025
Publisher : Yayasan Al-Amin Qalbu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59896/gara.v19i2.240

Congestion is a traffic problem that must be given attention so as not to have a negative impact on road users. One of the congestion points that occurred in West Lombok Regency was the Labuapi Workshop Unsignalized Intersection. The PTV VISSIM student version application was used to model and analyze the Labuapi Workshop Unsignalized Intersection. The data used were primary and secondary data, such as traffic volume, speed, delays, and queue opportunities. The results of the analysis showed that it was in accordance with the standards of PM No. 96 of 2015. The existing condition of the Unsignalized Intersection of the workshop has a service level of E as evidenced by the average delay value (D) of 53.905 seconds/vehicle, average queue length (QL) of 39.134 meters, average carbon monoxide (CO) emissions of 161.956 grams and average fuel consumption of 8.765 liters. Therefore, 4 alternatives were made, namely alternative 1 4-phase planning, alternative 2 3-phase planning, alternative 3 2-phase planning, and alternative 4 road widening without APILL (Traffic Signaling Device). Of the 4 alternatives, the alternative of road widening without APILL is the best with a service level of D, an average delay value (D) of 29.912 seconds/vehicle, an average queue length (QL) of 12.767 m, an average carbon monoxide (CO) emission of 125.596 grams and an average fuel consumption of 6.801 liters.

PENGARUH HAMBATAN SAMPING TERHADAP KECEPATAN DAN VOLUME LALU LINTAS PADA JALAN TIDAK TERBAGI (2/2 UD DAN 4/2 UD) (STUDI KASUS RUAS JALAN GAJAH MADA KOTA MATARAM): The Effect Of Side Friction On Traffic Speed And Volume On Undivided Roads (2/2 UD And 4/2 UD): (Case Study Of Gajah Mada Road, Mataram City) Rohani Rohani; Hasyim Hasyim; Made Mahendra; Santri Islamiati
Ganec Swara Vol. 19 No. 4 (2025): Desember 2025
Publisher : Yayasan Al-Amin Qalbu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59896/gara.v19i4.432

The Gajah Mada road segmen in Mataram City has high activity, as well as high side obstacles. These side frictions include parked vehicles, pedestrians, non-motorized vehicles and vehicles exiting/entering. The number of side frictions will certainly affect the speed and volume of traffic moving on the undivided road with 2 lanes in 2 directions and 4 lanes in 2 directions on Gajah Mada road section. Therefore, it is necessary to conduct a study aimed at analyzing the effect of side frictions on traffic speed and volume using the MKJI 1997 method. The results of the analysis show that the highest side obstacles occur on the 2/2UD type road on Monday at 07.00-08.00 at 232.5 events /hour with the highest traffic volume of 3314.85 pcu/hour and the highest space mean speed on the 2/2UD type occurs on Saturday at 13.00-14.00 at 32,310 km/hour. Simultaneously and partially (parked vehicles, pedestrians, non-motorized vehicles and vehicles entering/exiting from the side of the road), a very strong influence was obtained between side friction and traffic speed and volume because the dominant correlation coefficient (R) was greater than 0.9 (R > 0.9) on road types 2/2UD and 4/2UD

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