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The current production and consumption models of building materials are causing severe environmental and social problems worldwide. In this sense, construction and demolition waste (C&DW) are part of the problem and can be part of the solution, particularly in developing countries where the construction industry is growing very rapidly. Although many efforts have been made by stakeholders to increase the use of C&DW in construction materials, articulated efforts are required at global, national, and local scales to develop truly sustainable construction sectors. Therefore, this e-book, which is based on the “Special Issue on Construction and Demolition Waste: Challenges and Opportunities”, is an effort to articulate knowledge on novel and innovative building materials using C&DW and management systems to develop circular economy models (CE) for the construction sector. In this e-book, it is concluded that even though the valorization of C&DW has been developed worldwide, more incentives need to be provided to really convert the local and national construction chains in sustainable sectors, which appropriate the circular economy for production and consumption systems that imrpove, at the least, efficiency in terms of materials, water and energy use.

Technology: general issues --- History of engineering & technology --- Conservation of buildings & building materials --- construction and demolition wastes --- alkali-activated materials --- recycling --- binder --- recycled aggregates --- paving stones --- aggregates --- C&amp --- DW --- sustainability --- mechanical properties --- concrete --- demolition waste --- management --- life cycle assessment --- circular economy --- recycled concrete aggregate --- recycled aggregate concrete --- residual mortar --- reusing --- workability --- compressive strength --- pavement --- green deal --- construction and demolition waste --- quantification --- waste management --- re-use --- material stock analysis --- multi-criteria decision-making --- local authorities --- urban metabolism --- interview --- building --- recycled concrete --- carbonation --- construction and demolition waste (C&DW) --- construction --- municipal solid waste incineration bottom ash --- supplementary cementitious material

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The current production and consumption models of building materials are causing severe environmental and social problems worldwide. In this sense, construction and demolition waste (C&DW) are part of the problem and can be part of the solution, particularly in developing countries where the construction industry is growing very rapidly. Although many efforts have been made by stakeholders to increase the use of C&DW in construction materials, articulated efforts are required at global, national, and local scales to develop truly sustainable construction sectors. Therefore, this e-book, which is based on the “Special Issue on Construction and Demolition Waste: Challenges and Opportunities”, is an effort to articulate knowledge on novel and innovative building materials using C&DW and management systems to develop circular economy models (CE) for the construction sector. In this e-book, it is concluded that even though the valorization of C&DW has been developed worldwide, more incentives need to be provided to really convert the local and national construction chains in sustainable sectors, which appropriate the circular economy for production and consumption systems that imrpove, at the least, efficiency in terms of materials, water and energy use.

construction and demolition wastes --- alkali-activated materials --- recycling --- binder --- recycled aggregates --- paving stones --- aggregates --- C&amp --- DW --- sustainability --- mechanical properties --- concrete --- demolition waste --- management --- life cycle assessment --- circular economy --- recycled concrete aggregate --- recycled aggregate concrete --- residual mortar --- reusing --- workability --- compressive strength --- pavement --- green deal --- construction and demolition waste --- quantification --- waste management --- re-use --- material stock analysis --- multi-criteria decision-making --- local authorities --- urban metabolism --- interview --- building --- recycled concrete --- carbonation --- construction and demolition waste (C&DW) --- construction --- municipal solid waste incineration bottom ash --- supplementary cementitious material

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Increases in population, booming economy, rapid urbanization and the rise of living standard have exponentially accelerated waste production. Currently, 2 billion tons per year of municipal solid waste is produced worldwide and about 33% of this amount remains uncollected by different municipalities.. However, the entire waste production process concerns different streams and origins other than municipal solid waste, including industrial, agricultural, construction and demolitions waste; and hazardous, medical and electronic waste. Published papers, as a whole, concern different waste materials such as the recovery of different building materials, the treatment of waste deriving from electrical and electronic equipment, the utilization of stainless-steel slags, agricultural and domestic waste and plastics. In conclusion, the works demonstrate scientific and technological relevance in terms of the topics dealt with, but the problems addressed in this Special Issue proceed beyond the solution that the scientific community is able to propose. In fact, our industrial system, at the end of its cycle of production and consumption, has not developed the capacity to absorb and reuse waste and byproducts. We have not yet managed to adopt a circular model of production capable of preserving resources for present and future generations.

Technology: general issues --- pyrolysis --- biochars --- agricultural waste --- biomass --- recycled aggregates --- self-compacting concrete --- design parameters --- fresh concrete properties --- mix design --- printed circuit boards --- spent mobile phones --- thiourea --- precious metals --- hydrometallurgy --- factorial plans --- plastic waste --- carbon nanotubes --- plastic oil --- fuels --- monomer recovery --- olefins --- reusing of wastes --- secondary lime --- neutralization --- reduce landfill --- acidic wastewater treatment --- sustainable production --- recycling --- lathe waste --- CNC machining --- sustainable development --- mix modification --- workability --- mechanical properties --- thermal properties --- bottom ash --- dry treatment --- incineration --- municipal solid waste --- potential toxic elements --- salts --- sound absorber --- cigarette butts --- sustainable material --- chemical cleaning --- stainless steel slag --- upscale trials --- mixing time --- absorption --- circular economy --- oil spill --- refrigerator --- WEEE --- waste --- value-added materials --- calcium oxide --- eggshell --- incense sticks --- adsorption --- wastewater --- n/a

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Increases in population, booming economy, rapid urbanization and the rise of living standard have exponentially accelerated waste production. Currently, 2 billion tons per year of municipal solid waste is produced worldwide and about 33% of this amount remains uncollected by different municipalities.. However, the entire waste production process concerns different streams and origins other than municipal solid waste, including industrial, agricultural, construction and demolitions waste; and hazardous, medical and electronic waste. Published papers, as a whole, concern different waste materials such as the recovery of different building materials, the treatment of waste deriving from electrical and electronic equipment, the utilization of stainless-steel slags, agricultural and domestic waste and plastics. In conclusion, the works demonstrate scientific and technological relevance in terms of the topics dealt with, but the problems addressed in this Special Issue proceed beyond the solution that the scientific community is able to propose. In fact, our industrial system, at the end of its cycle of production and consumption, has not developed the capacity to absorb and reuse waste and byproducts. We have not yet managed to adopt a circular model of production capable of preserving resources for present and future generations.

Technology: general issues --- pyrolysis --- biochars --- agricultural waste --- biomass --- recycled aggregates --- self-compacting concrete --- design parameters --- fresh concrete properties --- mix design --- printed circuit boards --- spent mobile phones --- thiourea --- precious metals --- hydrometallurgy --- factorial plans --- plastic waste --- carbon nanotubes --- plastic oil --- fuels --- monomer recovery --- olefins --- reusing of wastes --- secondary lime --- neutralization --- reduce landfill --- acidic wastewater treatment --- sustainable production --- recycling --- lathe waste --- CNC machining --- sustainable development --- mix modification --- workability --- mechanical properties --- thermal properties --- bottom ash --- dry treatment --- incineration --- municipal solid waste --- potential toxic elements --- salts --- sound absorber --- cigarette butts --- sustainable material --- chemical cleaning --- stainless steel slag --- upscale trials --- mixing time --- absorption --- circular economy --- oil spill --- refrigerator --- WEEE --- waste --- value-added materials --- calcium oxide --- eggshell --- incense sticks --- adsorption --- wastewater --- n/a

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This book is dedicated to “High-Performance Eco-Efficient Concrete” and concrete fatigue behavior, more sustainable construction materials, capable of complying with quality standards and current innovation policies, aimed at saving natural resources and reducing global pollution. The development of self-compacting concretes with electric arc furnace slags is a further achievement. In addition, the technical and economic viability of using coarse recycled aggregates from crushed concrete in shotcrete, enhanced quality and reduced on-site construction time are the basic features of prefabricated bridge elements and systems, biomass bottom ash as aluminosilicate precursor and phosphogypsum were discussed. On the other hand, basalt fiber improving the mechanical properties and durability of reactive powder concrete, alkali-activated slag and high-volume fly ash and the potential of phosphogypsum as secondary raw material in construction industry, the effects of fly ash on the diffusion, bonding, and microproperties of chloride penetration in concrete were studied. Increasing amounts of sustainable concretes are being used as society becomes more aware of the environment. Finally, the circular economy as an economic model of production and consumption that involves reusing, repairing, refurbishing, and recycling materials after their service life are presented in this book.

high-frequency fatigue test --- recycled aggregate --- recycled aggregate concrete --- fatigue --- Locati test --- electric arc furnace slags --- mechanical properties --- durability --- self-compacting concrete --- high-performance concrete --- EAFS --- cupola slag --- electric arc furnace slag --- shotcrete --- deep tunnels --- convergence-confinement method --- coarse recycled concrete aggregate --- dry-mix process --- prefabricated --- bridge deck --- prestressed --- UHPC --- sustainable --- biomass bottom ash --- phosphogypsum --- alkali activated fine-grained concrete --- reactive powder concrete --- basalt fiber --- chloride-salt corrosion --- freeze–thaw durability --- alkali-activated concrete --- shrinkage --- cracking --- internal curing --- metakaolin --- ternary binder --- high performance --- strength --- foam --- lightweight material --- thermal conductivity --- fly ash --- carbon dioxide emission --- chloride diffusion --- binding capacity of chlorine --- HVFA --- RAC --- sustainable building --- reinforced concrete --- corrosion of concrete --- fiber-reinforced --- natural fibers --- bamboo --- sustainable mortar --- mechanical characterization --- by-products --- toughness --- recycled concrete --- low clinker cement --- precast --- physical properties --- New Jersey barriers --- recycled aggregates --- recycled mortar --- construction and demolition waste --- decontaminating --- photocatalysis --- glass powder --- green cements --- slag-pozzolanic cement --- CEM V --- tunnel spoil recycling --- high durability --- n/a --- freeze-thaw durability