Effects of waste engine oil on warm reclaimed asphalt mixture

Depletion of natural resources and increase in energy consumption have led the pavement industry to actively explore innovative ways in creating sustainable infrastructure. In this context, the aim of this research was to investigate the modification of recycled binder and mixtures containing waste engine oil (WEO) with two types of warm asphalt additives; wax-based and oil-based. This study was divided into four phases. In the first phase, the WEO was blended with 0, 5, 10, 15 and 20 percent by weight of asphalt binder containing aged binder obtained from extraction and recovery of reclaimed asphalt pavement (RAP). The optimum WEO obtained from the first phase was blended with warm mix additives and tested in phase two. Two types of warm asphalt additives that had been applied were wax-based with dosages of 1%, 2%, and 3%, as well as oil-based with dosages of 0.3%, 0.4%, and 0.5% by weight of asphalt binder with WEO. These modified binders were subjected to storage stability, viscosity, rheology (temperature sweep, rutting resistance, and creep recovery), surface energy, as well as chemical characterization by using Fourier Transform Infrared Spectroscopy (FTIR) to determine the optimum additive content. In phase three, mechanical performance tests were performed by applying the optimum additive content obtained in phase two at compaction temperatures of 135°C, 125°C, and 115°C. The tests were resilient modulus, moisture resistance and rutting evaluation. In the final phase, the correlations between the properties of asphalt binder and the performance of the mixture had been determined by correlation coefficient analysis. The results show that 15% of WEO from various sources had been able to rejuvenate the aged binder to the base binder performance level. The optimum waxbased and oil-based additive contents were found to be 2% and 0.4%, respectively. The asphalt binder with wax-based additive improved the workability, hence displaying superior rutting resistance factor, better elastic response with reduced phase angle and reduction in aging level. Besides that, the mixture with wax-based additive exhibited higher resilient modulus, good moisture resistance, and acceptable lower rut depth, in comparison to other binders. The best compaction temperature was determined to be 135°C. In conclusion, the WEO emerged as a highly promising substance for modified binder with RAP and warm asphalt additive

Penilaian nano zink oksida keatas campuran asfalt terhadap kerosakan kelembapan

Malaysia mempunyai iklim khatulistiwa yang menerima intensiti hujan yang tinggi sepanjang tahun. Untuk keadaan jalan, turapan asfalt dikenakan dengan beban yang tinggi dan sistem saliran tidak mencukupi untuk musim hujan. Semua faktor yang digabungkan menghasilkan kebarangkalian kerosakan kelembapan yang tinggi [1]. Kerosakan kelembapan adalah salah satu masalah utama bagi turapan berasfalt di mana ianya mempengaruhi jangka hayat disebabkan oleh keadaan lekatan dan lekitan asfalt pengikat [2]. Kehilangan pelekatan merujuk kepada pengurangan keupayaan pelekat pada permukaan agregat dan asfalt. Ini berlaku akibat air dan tekanan dari air yang bertindak pada campuran asfalt. Sementara itu, kehilangan lekitan adalah disebabkan oleh pelembutan atau kemerosotan keupayaan lekitan didalam asfalt pengikat yang tertumpu kepada kelembapan [3]. Pelucutan dan penguraian adalah disebabkan kehilangan ikatan pelekat antara agregat dan asfalt. Sementara itu, kehilangan keupayaan lekitan boleh membawa kepada kelemahan turapan yang mudah terdedah kepada kerosakan pramatang dan kerosakan tekanan pori [4]

Artificial Neural Network in Seismic Reflection Method for Measuring Asphalt Pavement Thickness

A non‐destructive measurement of asphalt pavement layer thickness using seismic reflection was adopted together with coring test at similar site for comparison. The test was carried out on pavements around university campus’s road to measure the asphalt pavement layer thickness. The on-site seismic reflection testing was carried out using three piezoelectric sensors to capture time travel of wave motion, a light ball bearing to produce a high frequency seismic wave source and a data logger for data acquisition. The data processing is conducted in the time domain exclusively using a feedforward artificial neural network (ANN) using MATLAB software. A graphical interface is developed for viewing and extracting the result to make the processing of the seismic data feasible and user-friendly. The seismic reflection method analysis using the ANN successfully measured the asphalt pavement layer thickness. This study of the reflection method for measuring the pavement thickness compared with coring indicates the average accuracy of five testing sites was 93%. It shows that the seismic reflection able to demonstrate the capability to measure thickness of pavement in non-destructive way at a reliable accuracy

Physical properties of bitumen containing diatomite and waste engine oil

The addition of modifier, either to replace bitumen or as an additive, could potentially improve the performance of conventional bitumen used in road construction. This study characterizes the physical properties of bitumen 80/100 penetration grade modified with diatomite powder and waste engine oil (WEO). Different percentages of WEO i.e. 1%, 2%, and 3%, were added with 1% diatomite to the bitumen. The conventional and modified bitumen samples were tested for penetration, softening point, viscosity, and loss on heating. Results showed that the increase of WEO content, particularly at 3% in the modified bitumen, has softened the bitumen with lower softening point and higher loss on heating than the unmodified sample. In contrast, the diatomite powder has shown potential in reinforcing the bitumen structure at high temperature based on higher viscosity obtained at 165°C compared to conventional bitumen

Physical properties of bitumen containing diatomite and waste engine oil

The addition of modifier, either to replace bitumen or as an additive, could potentially improve the performance of conventional bitumen used in road construction. This study characterizes the physical properties of bitumen 80/100 penetration grade modified with diatomite powder and waste engine oil (WEO). Different percentages of WEO i.e. 1%, 2%, and 3%, were added with 1% diatomite to the bitumen. The conventional and modified bitumen samples were tested for penetration, softening point, viscosity, and loss on heating. Results showed that the increase of WEO content, particularly at 3% in the modified bitumen, has softened the bitumen with lower softening point and higher loss on heating than the unmodified sample. In contrast, the diatomite powder has shown potential in reinforcing the bitumen structure at high temperature based on higher viscosity obtained at 165°C compared to conventional bitumen

Physical and Chemical Properties of Nano Zinc Oxide Modified Asphalt Binder

Recently, nanotechnology has been used in all fields of science, including pavement engineering due to promising and improvement of materials offered. The modification of asphalt binder has evolved gradually, with several types of nanomaterials being employed to modify the asphalt binder. In this study, nano zinc oxide with flake structure was used as a modifier in asphalt binder. The nano modifiers were blended with penetration grade 60/70 asphalt binder at 3%, 5%, and 7%, respectively. Physical properties of the modified asphalt binders were then examined, including storage stability, penetration, softening point, and viscosity. Meanwhile, the chemical property was determined using Fourier-Transform Infrared Spectroscopy. It was discovered that 3% nano zinc oxide produced the best results. Nano zinc oxide was found not to show separation at high temperatures in a storage stability test. The addition of nano zinc oxide to the asphalt binder also reduced the penetration, increased the softening point, and reduced the viscosity. The high penetration index value also indicates that the asphalt binder treated with nano zinc oxide is thermally resistant.   Keywords: Nanotechnology, asphalt binder, nano zinc oxide, physical properties, chemical properties

Physical and Chemical Properties of Nano Zinc Oxide Modified Asphalt Binder

Recently, nanotechnology has been used in all fields of science, including pavement engineering due to promising and improvement of materials offered. The modification of asphalt binder has evolved gradually, with several types of nanomaterials being employed to modify the asphalt binder. In this study, nano zinc oxide with flake structure was used as a modifier in asphalt binder. The nano modifiers were blended with penetration grade 60/70 asphalt binder at 3%, 5%, and 7%, respectively. Physical properties of the modified asphalt binders were then examined, including storage stability, penetration, softening point, and viscosity. Meanwhile, the chemical property was determined using Fourier-Transform Infrared Spectroscopy. It was discovered that 3% nano zinc oxide produced the best results. Nano zinc oxide was found not to show separation at high temperatures in a storage stability test. The addition of nano zinc oxide to the asphalt binder also reduced the penetration, increased the softening point, and reduced the viscosity. The high penetration index value also indicates that the asphalt binder treated with nano zinc oxide is thermally resistant.   Keywords: Nanotechnology, asphalt binder, nano zinc oxide, physical properties, chemical properties

Stiffness modulus properties of hot mix asphalt containing waste engine oil

This study presents the effect of waste engine oil (WEO) on the mechanical properties of hot mix asphalt mixtures containing waste lubricating WEO. It was added into mixture at 0%, 3%, 5%, 7%, 10% and 15% by weight of binder. The mechanical properties of the mixes were evaluated by conducting indirect tensile stiffness modulus (ITSM) at temperatures of 25°C and 40°C. The results indicated that modified mixes exhibited lower stiffness modulus with the increasing amount of WEO as well as testing temperature. The increasing amount of WEO was found to have a good linear correlation to the decreasing of stiffness modulus. The finding showed that the WEO has the significant role as a softening agent which affected the stiffness modulus even at low percentag