scholarly journals Influence of RAP and Waste Plastic on Cracking Resistance of Warm SMA Mixes

2022 ◽  
Vol 10 (1) ◽  
pp. 79-87
Author(s):  
Varuna M. ◽  
Bhavani Prasad G ◽  
Anjaneyappa Venkateshappa ◽  
Amarnath M S
Keyword(s):  
Cracking Resistance ◽  
Waste Plastic

scholarly journals Performance Testing of Hot Mix Asphalt Modified with Recycled Waste Plastic

2021 ◽  
Author(s):  
Shadi Saadeh ◽  
Pritam Katawał
Keyword(s):  
Fatigue Cracking ◽  
Waste Plastics ◽  
Plastic Pollution ◽  
Cracking Resistance ◽  
Waste Plastic ◽  
Rutting Resistance ◽  
The World ◽  
Ct Test ◽  
Recycled Waste ◽  
The Ideal

Plastic pollution has become one of the major concerns in the world. Plastic waste is not biodegradable, which makes it difficult to manage waste plastic pollution. Recycling and reusing waste plastic is an effective way to manage plastic pollution. Because of the huge quantity of waste plastic released into the world, industries requiring a large amount of material, like the pavement industry, can reuse some of this mammoth volume of waste plastics. Similarly, the use of reclaimed asphalt pavement (RAP) has also become common practice to ensure sustainability. The use of recycled waste plastics and RAP in HMA mix can save material costs and conserve many pavement industries’ resources. To successfully modify HMA with RAP and waste plastic, the modified HMA should exhibit similar or better performance compared to conventional HMA. In this study, recycled waste plastic, linear low-density polyethylene (LLDPE), and RAP were added to conventional HMA, separately and together. The mechanical properties of conventional and modified HMA were examined and compared. The fatigue cracking resistance was measured with the IDEAL Cracking (IDEAL CT) test, and the Hamburg Wheel Tracking (HWT) test was conducted to investigate the rutting resistance of compacted HMA samples. The IDEAL CT test results showed that the cracking resistance was similar across plastic modified HMA and conventional HMA containing virgin aggregates. However, when 20% RAP aggregates were used in the HMA mix, the fatigue cracking resistance was found to be significantly lower in plastic modified HMA compared to conventional HMA. The rutting resistance from the HWT test at 20,000 passes was found to be similar in all conventional and modified HMA.

scholarly journals Waste Plastic, the Challenge Facing Developing Countries—Ban It, Change It, Collect It?

Recycling ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 3 ◽  
Author(s):  
Linda Godfrey
Keyword(s):  
Developing Countries ◽  
Civil Society ◽  
Unintended Consequences ◽  
Consumption Patterns ◽  
Waste Collection ◽  
Waste Plastic ◽  
The World ◽  
Single Solution ◽  
Single Use ◽  
Taking Action

With changing consumption patterns, growing populations and increased urbanisation, developing countries face significant challenges with regards to waste management. Waste plastic is a particularly problematic one, with single-use plastic leaking into the environment, including the marine environment, at an unprecedented rate. Around the world, countries are taking action to minimise these impacts, including banning single-use plastics; changing petroleum-based plastics to alternative bio-benign products such as paper, glass or biodegradable plastics; and improving waste collection systems to ensure that all waste is appropriately collected and reprocessed or safely disposed. However, these “solutions” are often met with resistance, from business, government or civil society, due to the intended and unintended consequences, leaving many questioning the most appropriate solution to reducing the leakage. This paper argues that there is no one single solution to addressing the leakage of plastic into the environment, but that the solution is likely to be a combination of the three approaches, based on local considerations.

scholarly journals Sustainable Practice in Pavement Engineering through Value-Added Collective Recycling of Waste Plastic and Waste Tyre Rubber

Engineering ◽  
2020 ◽  
Author(s):  
Xiong Xu ◽  
Zhen Leng ◽  
Jingting Lan ◽  
Wei Wang ◽  
Jiangmiao Yu ◽  
...  
Keyword(s):  
Value Added ◽  
Waste Plastic ◽  
Pavement Engineering ◽  
Waste Tyre ◽  
Sustainable Practice

scholarly journals Towards Sustainable Concrete Composites through Waste Valorisation of Plastic Food Trays as Low-Cost Fibrous Materials

2021 ◽  
Vol 13 (4) ◽  
pp. 2073 ◽  
Author(s):  
Hossein Mohammadhosseini ◽  
Rayed Alyousef ◽  
Mahmood Md. Tahir
Keyword(s):  
Compressive Strength ◽  
Low Cost ◽  
Impact Resistance ◽  
Food Tray ◽  
World Population ◽  
Fibrous Materials ◽  
Palm Oil Fuel Ash ◽  
Waste Plastic ◽  
Compressive Strength Of Concrete ◽  
The Impact

Recycling of waste plastics is an essential phase towards cleaner production and circular economy. Plastics in different forms, which are non-biodegradable polymers, have become an indispensable ingredient of human life. The rapid growth of the world population has led to increased demand for commodity plastics such as food packaging. Therefore, to avert environment pollution with plastic wastes, sufficient management to recycle this waste is vital. In this study, experimental investigations and statistical analysis were conducted to assess the feasibility of polypropylene type of waste plastic food tray (WPFT) as fibrous materials on the mechanical and impact resistance of concrete composites. The WPFT fibres with a length of 20 mm were used at dosages of 0–1% in two groups of concrete with 100% ordinary Portland cement (OPC) and 30% palm oil fuel ash (POFA) as partial cement replacement. The results revealed that WPFT fibres had an adverse effect on the workability and compressive strength of concrete mixes. Despite a slight reduction in compressive strength of concrete mixtures, tensile and flexural strengths significantly enhanced up to 25% with the addition of WPFT fibres. The impact resistance and energy absorption values of concrete specimens reinforced with 1% WPFT fibres were found to be about 7.5 times higher than those of plain concrete mix. The utilisation of waste plastic food trays in the production of concrete makes it low-cost and aids in decreasing waste discarding harms. The development of new construction materials using WPFT is significant to the environment and construction industry.

scholarly journals Effect of Intermetallic Compound Bridging on the Cracking Resistance of Sn2.3Ag Microbumps with Different UBM Structures under Thermal Cycling

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1065
Author(s):  
Chun-Chieh Mo ◽  
Dinh-Phuc Tran ◽  
Jing-Ye Juang ◽  
Chih Chen
Keyword(s):  
Electron Microscope ◽  
Intermetallic Compound ◽  
Thermal Cycling ◽  
Thermal Cycle ◽  
Crack Formation ◽  
Thermal Cycling Test ◽  
Under Bump Metallization ◽  
Reflow Time ◽  
Cracking Resistance ◽  
Scanning Electron

In this study, the effect of intermetallic compound (IMC) bridging on the cracking resistance of microbumps with two different under bump metallization (UBM) systems, Cu/solder/Cu and Cu/solder/Ni, under a thermal cycling test (TCT) is investigated. The height of the Sn2.3Ag solders was ~10 µm, which resembles that of the most commonly used microbumps. We adjusted the reflow time to control the IMC bridging level. The samples with different bridging levels were tested under a TCT (−55–125 °C). After 1000 and 2000 TCT cycles (30 min/cycle), the samples were then polished and characterized using a scanning electron microscope (SEM). Before IMC bridging, various cracks in both systems were observed at the IMC/solder interfaces after the 1000-cycle tests. The cracks propagated as cyclic shapes from the sides to the center and became more severe as the thermal cycle was increased. With IMC bridging, we could not observe any further failure in all the samples even when the thermal cycle was up to 2000. We discovered that IMC bridging effectively suppressed crack formation in microbumps under TCTs.

scholarly journals CeO2 and La2O3 Promoters in the Steam Reforming of Polyolefinic Waste Plastic Pyrolysis Volatiles on Ni-Based Catalysts

2020 ◽  
Vol 8 (46) ◽  
pp. 17307-17321
Author(s):  
Aitor Arregi ◽  
Mehrdad Seifali Abbas-Abadi ◽  
Gartzen Lopez ◽  
Laura Santamaria ◽  
Maite Artetxe ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Waste Plastic

scholarly journals Investigating the engineering properties of asphalt binder modified with waste plastic polymer

2021 ◽  
Author(s):  
Nuha S. Mashaan ◽  
Amin Chegenizadeh ◽  
Hamid Nikraz ◽  
Alireza Rezagholilou
Keyword(s):  
Asphalt Binder ◽  
Engineering Properties ◽  
Waste Plastic
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