Evaluating Modified Asphalt Binder Comprising Waste Paper Fiber and Recycled Low-Density Polyethylene

Abstract

The main concept of using waste and recycled materials as modifiers for construction materials, is to improve their performance, keep the resources, and conserve the environment from pollution problems. This investigation is tended to evaluate the effect of using two different types of modifiers on the physical properties of asphalt binder. The modifiers are Recycled-Low-Density-Polyethylene (R-LDPE) polymer and waste-Paper Fiber (w-PF), they were mixed individually and collectively with neat asphalt binder. The first set of modified binders comprised neat binder with 3% R-LDPE alone, the second is comprised 0.3%, 0.5% and 0.7% of w-PF alone, while the third comprised collective modifiers of 3% R-LDPE and 0.3%, 0.5% and 0.7% w-PF. The influence of these modifiers on neat asphalt binder was evaluated in terms of penetration (Pen.), softening point (SP), penetration index (PI), ductility, rotational viscosity (RV), penetration aging index (PAI) and softening point index (SPI). The obtained results indicate that the utilization of modifiers helps in improving the physical properties of asphalt binders by different levels. the modification by collective modifiers leads to an increase SP, RV, PI, PAI, and SPI to 65%, 2 times, 1.044, 0.93, 2.5 respectively compared to neat bitumen. As well, leads to a decrease in both Pen. and ductility to the levels 45% and 79% respectively. This indicates that the use of waste and recycled modifiers especially in the combined form encourage the production of comparative modified asphalt binder.

Enhancing Stone Mastic Asphalt through the Integration of Waste Paper and Cement Kiln Dust

“…This makes asphalt mixtures less likely to breakdown when they get wet, which increases their durability. These findings are consistent with those reported in the literature [17].…”

“…Paper pulp fiber was obtained from waste paper, a form of cellulose fiber generated by recycling local waste papers that are frequently produced [17]. These materials can thus be considered a step towards sustainability, which aids in lowering polluting factors affecting the environment and people's health.…”

Evaluation of the properties of modified local asphalt binder by using styrene butadiene rubber (SBR) or low-density polyethylene (LDPE)

“…Asphalt's rheologic qualities such as viscoelastic, adhesion and durability are significant when considering it as a paving material (Cao et al, 2018;Abduljabbar et al, 2022). Polymers-modified asphalt gained popularity in the second half of the twentieth century and are now essential in limiting the deterioration of road networks and intervention in modern waterproofing industries (Polacco, Filippi, Merusi & Stastna, 2015;Hameed, Al--Busaltan, Dulaimi, Kadhim & Al-Yasari, 2021). Due to increased traffic in Iraq because of the growing growth of uncontrolled vehicles and extreme weather conditions due to global climate change, many defects such as high-temperature rutting (permanent deformities) and low temperature cracking or fatigue cracking.…”