The Impact of HDPE Plastic Seeds on the Performance of Asphalt Mixtures

Abstract

Plastic waste processing is a problem that almost several countries in the Asian region are unable to overcome. One of the latest innovations carried out in the field of road pavement construction is mixing HDPE type plastic waste that has been processed into plastic seeds into the asphalt concrete mixture. Previous research has shown that HDPE plastic waste may be reused to improve the physical properties of temperature-sensitive asphalt and improve the stability of asphalt concrete. This study was conducted to determine the effect of using HDPE plastic ore as a mixed additive on the Asphalt Concrete-Wearing Course (AC-WC) using Marshall parameters. Marshall Parameters used are stability, flow, VIM, VMA, VFA, and MQ. The study was conducted in a laboratory by testing 42 samples with different levels of HDPE plastic seeds, mixed using wet methods to determine Marshall Characteristics. Manufacture of test objects using asphalt type, which has a penetration rate of 60/70. The initial research results showed that the optimal asphalt content (OAC) is 5.5%, with the percentage content of HDPE plastic seeds around 0, 1, 2, 3, 4, 5, 6, and 7% compared to asphalt weight. The results showed that the effect of HDPE plastic seed content on the AC-WC mixture increased the value of Marshall Characteristics and met all the requirements of SNI 06-2489-1991. This finding shows that HDPE plastic seeds deserve to be an alternative material for road pavements. Doi: 10.28991/cej-2021-03091744 Full Text: PDF

Effects of HDPE Utilization and Addition of Wetfix-Be to Asphalt Pavement in Tropical Climates

“…The test is only up to adding plastic with a rate of 8% because the mixing temperature is very high and close to the 60/70 penetration asphalt flashpoint, which is about 190°C. Asphalt modification with HDPE plastic waste decreases the penetration value, weight, plasticity level, flash and burn point, and viscosity, with an increase in flaccid point [11]. This makes the asphalt harder and resistant to high temperatures, making it difficult to change shape.…”

“…Based on the previous results that analyzed the optimum asphalt content was 5.75%, a mix design was designed to make the specimens with various levels of oil asphalt content, namely 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, and 7% by weight of the mixture. Nawir & Mansur [11], and Nawir [14] stated that the immersion modifications from standard Marshall bars are carried out by soaking a specimen in a heating tub (waterbed) for 24, 48, 72, and 96 hours. It is subsequently cooled for 30 minutes at a temperature of 60°C.…”

“…Numerous studies have been conducted on plastic waste as a substitute material for asphalt levels with the manufacture of specimens by mixing hot asphalt and cold plastic. However, this study used HDPE [11] with its physical properties are shown in Table 5. HDPE plastic in the form of flakes is processed first by burning until it melts completely and left for about 30 minutes to harden.…”

“…The combustion plastic that has been cooled is poured into the specimen's media, mixed, and weighted according to the portion. A 2021 study by [11] obtained a 4% optimal level of HDPE plastic waste from 5 variations that greatly help improve the quality of the flexural pavement. With the addition of 4% waste levels, the requirements for AC-WC layers will meet all specifications of the ministry of public works in Bina Marga (2018).…”

Effect of asphalt pavement construction on the environment of Ethiopia

“…As a result, vehicle energy, as well as greenhouse gas emission, will be reduced significantly. To reduce the friction and improve the asphalt mix stability performance HDPE plastic seeds can be added to asphalt at 5.5% as optimum value [18]. Due to the addition of HDPE plastic seeds into oil asphalt, the penetration value reaches 60/70.…”