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Ms. Elisabeth Keijzer
TNO

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Research Keywords & Expertise

0 Asphalt
0 Funerals
0 Infrastructure
0 Pavements
0 Sustainability

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Short Biography

Elisabeth Keijzer has a decade of experience in Life Cycle Assessment, with a specialization on the sustainability of buildings and infrastructure. Besides, she has a unique expertise on the sustainability aspects of funerals.

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Journal article
Published: 28 January 2021 in Sustainability
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The carbon footprints of asphalt mixtures with increasing reclaimed asphalt pavement (RAP) content were estimated using a life-cycle assessment methodology. Three asphalt mixtures with different applications and technical requirements, namely porous asphalt (PA), stone mastic asphalt (SMA), and asphalt concrete (AC), were included. The technology leaps needed to achieve asphalt mixtures containing up to 93% RAP were modelled. Mixtures containing up to 57% RAP were hot-mix asphalts (175 °C), while mixtures containing more RAP were produced at 135 °C and 105 °C. The energy requirements and their respective carbon footprints were calculated based on the heat capacity of the aggregates, RAP, and other bituminous materials. Furthermore, the effects of changing the country’s electricity mix were also evaluated. A potential carbon footprint reduction of between 55% and 64% was found for one tonne of asphalt containing 93% RAP and produced at 105 °C compared to the 0% RAP mixture produced at 175 °C. Considering the uncertainty of this technology at its early stage of development, the reduction could be as low as 45% or as high as 79%. Changing the electricity mix to one that is likely to be implemented until 2030 in the Netherlands further reduces the footprint by 10%.

ACS Style

Diana Bizarro; Zoran Steinmann; Isabel Nieuwenhuijse; Elisabeth Keijzer; Mara Hauck. Potential Carbon Footprint Reduction for Reclaimed Asphalt Pavement Innovations: LCA Methodology, Best Available Technology, and Near-Future Reduction Potential. Sustainability 2021, 13, 1382 .

AMA Style

Diana Bizarro, Zoran Steinmann, Isabel Nieuwenhuijse, Elisabeth Keijzer, Mara Hauck. Potential Carbon Footprint Reduction for Reclaimed Asphalt Pavement Innovations: LCA Methodology, Best Available Technology, and Near-Future Reduction Potential. Sustainability. 2021; 13 (3):1382.

Chicago/Turabian Style

Diana Bizarro; Zoran Steinmann; Isabel Nieuwenhuijse; Elisabeth Keijzer; Mara Hauck. 2021. "Potential Carbon Footprint Reduction for Reclaimed Asphalt Pavement Innovations: LCA Methodology, Best Available Technology, and Near-Future Reduction Potential." Sustainability 13, no. 3: 1382.

Review
Published: 02 September 2020 in Sustainability
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The pavement engineering industry, having realized the significance of the impacts that it imposes on the environment through the production, construction and management of its products and assets, has been driven towards a more sustainable and circular way of operating. This has partly been through asphalt recycling, which is an area that many road authorities have prioritized. However, not all the National Road Authorities (NRAs) and/or sector stakeholders seem to be adequately familiar with the Circular Economy (CE) concept. This paper attempts to assist the transition of NRAs to a more circular way of doing business, by analyzing the current situation of CE within national/regional authorities and NRAs. To do so, a questionnaire was sent to different NRAs and an online search was conducted to identify the ways that NRAs communicate their CE practices. Findings indicate that, although the majority of the NRAs are familiar with CE as a concept, not many actions have been taken so far towards its holistic implementation. Finally, there is a significant lack of CE expertise and communication within these bodies.

ACS Style

Konstantinos Mantalovas; Gaetano Di Mino; Ana Jimenez Del Barco Carrion; Elisabeth Keijzer; Björn Kalman; Tony Parry; Davide Lo Presti. European National Road Authorities and Circular Economy: An Insight into Their Approaches. Sustainability 2020, 12, 7160 .

AMA Style

Konstantinos Mantalovas, Gaetano Di Mino, Ana Jimenez Del Barco Carrion, Elisabeth Keijzer, Björn Kalman, Tony Parry, Davide Lo Presti. European National Road Authorities and Circular Economy: An Insight into Their Approaches. Sustainability. 2020; 12 (17):7160.

Chicago/Turabian Style

Konstantinos Mantalovas; Gaetano Di Mino; Ana Jimenez Del Barco Carrion; Elisabeth Keijzer; Björn Kalman; Tony Parry; Davide Lo Presti. 2020. "European National Road Authorities and Circular Economy: An Insight into Their Approaches." Sustainability 12, no. 17: 7160.

Lca of waste management systems
Published: 16 September 2016 in The International Journal of Life Cycle Assessment
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Although the funeral market is propagating new ‘green’ alternatives and exploring innovative techniques like resomation, very little is known about the environmental impact of funerals. This research aimed to develop a benchmark of funerals, by quantifying the environmental impacts of the most common funeral techniques, i.e. burial and cremation, by identifying where the main impacts originate from and by comparing these impacts to impacts of other activities during a person’s life. The environmental impacts of funerals were analysed by means of a life cycle assessment (LCA), based on Dutch company information, literature and expert judgements. The results were analysed per impact category but also on an aggregated level by means of shadow prices. Two sensitivity analyses were performed: one examined the high impact of cotton in funeral coffins; the other checked the results by means of another weighting method. The results showed no significant difference between the two funeral techniques in five impact categories. Burial has the lowest impact in more than half of the categories, but its impact is many times higher in the two most differing categories than for cremation. The total shadow price of burial is about 30 % higher than the shadow price of cremation, but the main cause for this difference is a highly debated category, namely land use. If the results would be considered without the shadow prices of land impact categories, burial would score 25 % lower than cremation. These results are representing average practise and may deviate on certain aspects for other countries, but as a starting point for further studies, this benchmark is well applicable. This study delivered an environmental benchmark of funerals and insights in the impacts of the individual processes, which can be used in further assessment of ’green’ funeral options. The benchmark results show that the environmental impact of funerals is largely determined by secondary processes and that the total impact can be quite small in comparison to other human activities. Besides these environmental insights, it is important to take into account social, cultural, climatic, local, economical and ethical arguments before changing policies or giving recommendations.

ACS Style

Elisabeth Keijzer. The environmental impact of activities after life: life cycle assessment of funerals. The International Journal of Life Cycle Assessment 2016, 22, 715 -730.

AMA Style

Elisabeth Keijzer. The environmental impact of activities after life: life cycle assessment of funerals. The International Journal of Life Cycle Assessment. 2016; 22 (5):715-730.

Chicago/Turabian Style

Elisabeth Keijzer. 2016. "The environmental impact of activities after life: life cycle assessment of funerals." The International Journal of Life Cycle Assessment 22, no. 5: 715-730.