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Civil and Environmental Engineering for the Sustainable Development Goals

Emerging Issues

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About this book

This open access volume collects emerging issues in Environmental and Civil Engineering, originating from outstanding doctoral dissertations discussed at Politecnico di Milano in 2021. The advanced innovative insights provided are presented with reference to the relevant sustainable development goals (SDGs), hoping that scientists, technicians and decision makers will find them as a valid support to face future sustainability challenges.

Indeed, the fast evolution of our society often falls short in properly taking into consideration its relationship with the environment, which is not only the primary source of any resource and the sink of all the wastes we generate throughout our activities, but also the cause of most of the loading and constraints applied to structures and infrastructures. The lack of a proper consideration of the relationship between the needs of both the society and the environment may lead to strong disequilibria, generating a large amount of threats for a robust, resilient and continuous development. In this perspective, the SDGs set by the United Nations represent the criteria to revise our development model, towards the ability to conjugate different needs to build a safe relation between anthropic activities and the environment. Civil and Environmental Engineering plays a relevant role in providing methods, approaches, risk and impact assessments, as well as technologies, to fulfil the SDGs. Research in these fields may in fact provide technical knowledge and tools to support decision makers and technicians in: (i) planning mitigation and adaptation actions to climate change, extreme weather, earthquakes, drought, flooding and other natural disasters; (ii) designing efficient and sustainable strategies for resources exploitation, minimizing the impact and the unequal distributions; (iii) increasing the safety of structures and infrastructures under exceptional loadings and against the deterioration due to their lifecycle; (iv) adopting a holistic risk management approach and appropriate technologies to reduce pollution and environment deterioration, which increase vulnerability; (v) providing a safe drinking water and sanitation system to protect human health.

Table of Contents

Frontmatter

Open Access

A Risk-Based Approach for Contaminants of Emerging Concern in Drinking Water Production and Distribution Chain
Abstract
Provision of safe drinking water (DW) is one of the major requisites for human health, related to four Sustainable Development Goals (SDGs) of the United Nation 2030 Agenda: SDGs 3 (Good health), 6 (Clean water and sanitation), 11 (Sustainable cities) and 12 (Responsible production and consumption). However, this is hindered by the presence, especially in highly-anthropized contexts, of contaminants of emerging concern (CECs) in DW, that may pose a risk for human health. The present study aims at developing a holistic framework to support both (i) decision-makers for CECs prioritization in DW regulation and (ii) water utilities for the selection of appropriate monitoring and treatment interventions for the optimization of DW supply system. In detail, a quantitative chemical risk assessment (QCRA), including uncertainties related to both exposure and hazard assessments, was developed. Then, it was combined with testing and modeling of CECs fate in treatment processes and in distribution network, obtaining a robust tool to achieve the above-mentioned SDGs.
Graphical Abstract
Beatrice Cantoni

Open Access

Influence of the Collection Equipment on Organic Waste Treatment: Technical and Environmental Analyses
Abstract
The research investigated the influence of different collection bag types on the environmental and energy performances of the food waste management chain, comparing paper and bioplastic bags. First, the use of bags during the food waste household storage was examined. Subsequently, the behavior of bags when subjected to anaerobic digestion was evaluated, performing Biochemical Methane Potential tests and semi-continuous co-digestion tests with the food waste, to simulate the operating conditions of full-scale digesters. Finally, the performances of the food waste management chain were evaluated, with a Life Cycle Assessment (LCA). The experimental tests showed a more favorable behavior of paper bags, showing a very good compatibility with the anaerobic digestion. The LCA results revealed how paper bags lead to improvements in the impact associated to the food waste management.
Graphical Abstract
Giovanni Dolci

Open Access

Flood Damage Assessment to Economic Activities in the Italian Context
Abstract
In the last century the number of floods affecting people increased across Europe, due to both more frequent intense events and the growth of population and urbanization in flood-prone areas. Equipping cities with tools for flood damage assessment is crucial to effectively manage and reduce flood risk. The sector of businesses has a key role in cities development and suffers high losses in case of inundation, but damage appraisal to economic activities is still a challenging task. This study took up the challenge of addressing this topic, with specific reference to direct damage and the Italian context. Two approaches have been implemented: the analysis of about a thousand damage data regarding economic activities in four Italian flood events and the development of damage functions for retail activities by means a synthetic approach. The results led to the identification of the most vulnerable elements of different types of economic activities and provided reference values to assess the order of magnitude of flood damage.
Graphical Abstract
Marta Galliani

Open Access

Cold Atom Interferometry in Satellite Geodesy for Sustainable Environmental Management
Abstract
Our Earth is a complex system. By monitoring the integrated geodetic-geodynamic processes, we can understand its sub-systems and geographical distribution of its resources. With the development of space techniques and artificial satellites, satellite geodesy era started, e.g., it became possible to observe a wide range of processes, occurring both on and below the Earth's surface. Such observations can be exploited not only in environmental activities, but also in societal activities like natural disasters monitoring. Thus, satellite geodesy can bring great benefits to “Climate action”, one of the 17 sustainable development goals of the United Nation: we can estimate the ice-sheet mass balance and study the impact of climate change by monitoring sea levels. This paper aims to investigate the possible implementation of cold atom sensors for future satellite gravity missions, which would improve our current knowledge of the Earth’s gravity field and contribute into the sustainable environmental management.
Graphical Abstract
Khulan Batsukh

Open Access

Autonomous Wireless Sensors via Graded Elastic Metamaterials
Abstract
Amongst the 17th Sustainable and Development Goals (SDGs), it’s crucial to ensure access to sustainable and modern energy, as emphasized by the Goal 7. This is not only relevant for large utilities, but also for tiny devices such as wireless sensors that can ubiquitously found in our information driven society. Recent advances in low-power consumption circuitry have enabled ultrasmall power integrated circuits, which can run with extremely low amount of power. For these reasons, energy harvesting can be used to self-power small electronic devices, using ambient waste energy from vibrations. Recent metamaterial technologies allow to dramatically increase the energy available for harvesting, and the operational bandwidth. A large-scale application of metamaterial-based energy harvesting could increase the sustainability in the global energy mix as well as provide improvement in energy efficiency.
Graphical Abstract
Jacopo Maria De Ponti

Open Access

Limit Analysis for Masonry Vaults and Domes of Cultural Heritage
Abstract
The scope of this dissertation is the study of masonry shell structures of cultural heritage through limit analysis. The final aim is to set up computational tools, integrated with experimental observations, for use in the interpretation of observed crack patterns and to study the safety of these structures. The kinematic approach is developed to calculate the limit load and the three-dimensional collapse mechanism of symmetric and skew barrel vaults. The effect of structural strengthening is examined as well. A static discrete model is developed for double curvature and polygonal domes, applying equilibrium at the blocks and strength criteria at interfaces. This allows to study a cracked masonry dome, evaluating the collapse multiplier and mechanism by considering the shell flexural response mechanism. This is used also to analyse the actual behaviour in membrane regime of a dome on reaching the maximum load before cracking. Finally, the polygonal dome supporting a tower of the Chiaravalle Abbey in Milan is analysed.
Graphical Abstract
Maria Chiara Giangregorio

Open Access

Displacement-Based Design of Geosynthetic-Reinforced Pile-Supported Embankments to Increase Sustainability
Abstract
Although the construction of concrete piles has a relevant environmental footprint, they are commonly used to reduce settlements of embankments on soft soil strata. A more sustainable choice to further reduce settlements (and, consequently, the number of piles) is to place geosynthetics below the embankment. However, existing design methods cannot calculate settlements at the embankment top and cannot be used to optimise the number of piles in a displacement-based design. In this note, an innovative model for assessing settlements at the top of Geosynthetic-Reinforced and Pile-Supported embankments induced by the embankment construction process is presented and validated against finite difference numerical analyses. The model is used to optimise the design of both piles and geosynthetic, and applied to a practical example, where the mass of CO2 saved by designing geosynthetics to reduce the pile number.
Graphical Abstract
Viviana Mangraviti

Open Access

Characterization and Monitoring of an Unstable Rock Face by Microseismic Methods
Abstract
Unstable rock slopes are likely to cause rockfalls, threatening human lives and properties, industrial activities, and transportation infrastructures in mountain areas. There is an increasing demand to forecast and mitigate the potential damage of rockfalls by developing a reliable early warning system. In this thesis, an unstable mountain slope in northern Italy was selected as the research target. A microseismic monitoring network has been operating since 2013 as a field research laboratory to study the microseismic monitoring technique in the perspective of developing rockfall early warning systems. Locating microseismic events is a basic step of this technique to obtain the location of developing cracks as possible precursors of rockfalls. However, it is still a challenging task due to the heterogeneity of fractured rock slopes. The main purpose of this thesis is to address the issues related to event localization for microseismic monitoring strategy applied to the unstable rock face.
Graphical Abstract
Zhiyong Zhang
Metadata
Title
Civil and Environmental Engineering for the Sustainable Development Goals
Editors
Prof. Manuela Antonelli
Prof. Gabriele Della Vecchia
Copyright Year
2022
Electronic ISBN
978-3-030-99593-5
Print ISBN
978-3-030-99592-8
DOI
https://doi.org/10.1007/978-3-030-99593-5