The use of waste plastics in partial asphalt binder replacement and substitute for polymer modification has the potential to contribute sustainability road infrastructure as well preservation natural resources. In this study, two types polyethylene (PE) PE-pellets PE-shreds (a by-product former, currently incinerated after production) were blended with a conventional order analyze their effect on chemo-mechanical thermal behavior. Particular attention was paid characterization PE description...

Recycled Concrete Aggregates (RCA) form a significant part of construction and demolition waste its recycling is crucial for long-term sustainability. This study examined the incorporation various fractions RCA in Semi-Dense Asphalt (SDA) mixtures. The control SDA aggregates were replaced by selected 2/4 mm (coarse) 0.125/2 (sand) at 100% 50% each, filler fraction. replacement was performed mass with only one fraction being any single mixture. mixtures evaluated their volumetrics, indirect...

This study employed the methodology of life cycle assessment (LCA) to assess environmental impacts rubberized semi-dense asphalt (SDA) pavement. Asphalt mixtures were prepared at plant, followed by hybrid approach mechanical and leaching tests in laboratory possible service PAH leaching. The LCA was carried out considering two scenarios: (1) reference scenario focuses on standard SDA produced only virgin materials; (2) test refers using crumb rubber, a secondary material from waste tires. In...

In order to improve the sustainability of low-noise Semi-Dense Asphalt (SDA), aggregate fractions were replaced by recycled concrete aggregates (RCA), an abundant construction waste. The replacement was conducted 2/4 and 0.125/2 mm corresponding (coarse), 0.063/4 (sand) control virgin aggregates, at about 15% volume mixture for each fraction. Additionally, RCA filler entirely, bringing level over 20% total mixture. binder added same amount as +0.5%, with additional compensating estimated...

Waste plastic in low noise asphalt mixtures can be a viable alternative to with polymer modified bitumen. The performance of semi dense (SDA) waste polyethylene (PE) is investigated. cyclic compression test (CCT) and semi-circular bending (SCB) was used for characterization high temperature performance. CCT results revealed that the PmB mixture had shown significantly higher resistance compared PE mixture. However, modification showed some improvements terms loading when using same base...

Noise mitigation is the main advantage of semi-dense asphalt (SDA) pavements compared to traditional such as stone-mastic (SMA), but noise not quantitatively considered in life cycle assessment (LCA). This article performs a comprehensive LCA for SMA and SDA including considerations. State-of-the-art sound emission acoustical ageing models were used determine road traffic noise. The latest Swiss dose-response curves current exposure data evaluate health impacts due Additionally, also...

Electric Arc Furnace Slag (EAFS) is one of the primary by-products steel recycling industry, which comes out initially as large pieces, that can be further crushed and used aggregates in infrastructure materials. While being a waste product, relatively high strength means EAFS provide favorable properties when correctly. One possible destination for higher value semi-dense asphalt (SDA), surface course low-noise pavement. Due to percentage air voids SDA (10–18%), mixture mechanical depend on...

Construction materials research is consistently striving to improve sustainability, in the reduction of virgin by use otherwise landfilled same purpose. Crumb rubber (CR) from end-of-life tires and polyethylene terephthalate (PET) post-consumer liquid containers are two most commonly circulating forms waste urban environment. This study investigated replacement semi-dense asphalt (SDA) sand untreated mechanically shredded CR PET, at 2.5 5.1% respectively total mass aggregates. The mixtures...

Waste plastic in low noise asphalt mixtures can be a viable alternative to polymer modified (Pmb) mixtures. The performance of semi dense (SDA) with waste polyethylene (PE) is investigated. cyclic compression test (CCT) and semi-circular bending (SCB) was used for high temperature performance. CCT results revealed that the PmB mixture had shown significantly higher resistance compared PE mixture. However, modification showed some improvements terms loading when using same base binder without...

Among the urban societal burdens rolling noise generation from tire pavement interaction and waste stand apart. Many materials can be used in pavements with comparable mechanical performance. Noise-related characteristics such as porosity, sound absorption surface texture, were measured for semi-dense low mixtures using namely: recycled concrete aggregates, crumb rubber, polyethylene terephthalate polyethylene. The results show that use of these is a viable sustainable option pavements,...

The urban environment faces two challenges: waste and noise. work presented here shows that the use of certain marginal materials for semi-dense asphalt low-noise pavements is a sustainable option. To this end, mechanical, acoustic life-cycle assessment evaluations were performed, comparing different scenarios. results show these alternative can, most part, reach mechanical performance required both at binder scale mixture scale. Depending on material, mix design adjustments might be...

The evaluation of environmental impacts for low-noise roads is a challenging topic in life cycle assessment (LCA) due to noise reduction considerations. This paper presents hybrid modifications conventional LCA, using acoustical pavement characterization data from the close proximity (CPX) test, and models emission, propagation exposure incorporate inventories road traffic noise. Furthermore, based on system indicators considered monetarization direct external costs was included, order...

The incorporation of waste materials into road provides an excellent opportunity for partial reductions in virgin material consumption while providing a valuable alternative destination the would-be waste. However, these and performance limitations resulting asphalt need to be carefully examined, especially with regards cracking susceptibility. current study focuses on use construction fillers as aggregate replacement semidense (SDA) mixtures. Both concrete form recycled aggregates (RCA)...

Abstract This study presents a life cycle assessment (LCA) evaluating the use of virgin materials, waste polyethylene (PE), and electric arc furnace steel slag (EAFSS) in semi-dense asphalt (SDA) surface courses, which is primarily used for low-noise pavements. Three types SDA mixtures with PE, EAFSS were prepared water sensitivity tests conducted to determine mechanical performance. The LCA defined three scenarios using system expansion, namely (1) reference scenario materials disposal PE...

Abstract High strength bolts with large diameters are widely used in steel structures from the infrastructure and energy conversion sectors. The brittle fracture behavior of these connections has to be taken into account, especially for operating at cold environment, such as offshore wind plant. Generally, two groups methods employed cleavage assessment, i. e., global approaches developed mechanics frame local criteria based on damage approach proposed by Beremin. This work aims determine...