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This book, Green Concrete for a Better Sustainable Environment, aims to cover recent advances in the development of green concrete solutions and discuss the best ways to leverage opportunities in this domain. Concrete can be described as green concrete if it has one of the following features; it uses waste material as at least one of its components, its production process does not lead to environmental destruction, or it has high performance and life cycle sustainability. At present, natural resources are running out. Cement and concrete made from industrial and construction waste can be regarded as valuable resources for civil infrastructure construction. Green concrete will not only contribute to a circular economy, but can also help to reduce the amount of embodied energy and CO2 emissions associated with cement manufacturing and aggregate quarrying. Using green concrete can also mitigate the environmental threats associated with industrial waste materials. This book covers the theoretical, experimental, applied and modelling research studies on the materials, products and structures related to sustainable cement-based composites.

recycled aggregate concrete --- shrinkage and creep --- attached mortar --- prediction model --- construction and demolition wastes --- resource utilization --- recycled concrete hollow block --- masonry walls --- seismic performance --- steel frame --- infilled shear walls --- semi-rigid connection --- seismic behavior --- MSWI bottom ash --- concrete --- sulfate attack --- capillary transport --- crystallization --- husk mortar wallboard --- experiment --- lateral strength --- strain --- failure load --- full replacement ratio --- section steel and RAC --- bond behavior --- SRRC (Steel Reinforced Recycled Concrete) --- bond strength --- bond slip --- numerical simulation --- salt --- NaCl --- asphalt concrete --- freeze–thaw cycles --- winter road --- industrial waste --- sustainable concrete --- recycled expanded glass --- n/a --- freeze-thaw cycles

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Concrete is the most widely utilized construction material in the world. Thus, any action intended to enhance the sustainability of the construction industry must consider the supply chain, production, distribution demolition and eventual disposal, landfilling or recycling of this composite material. High-performance concrete may be one of the most effective options to make the construction sector more sustainable. Experience proves that the use of recycled concrete aggregates, as well as the partial replacement of ordinary Portland cement with other supplementary cementitious materials or alternative binders, are generally accepted as the most realistic solutions to reduce the environmental impacts, leading to sufficiently high mechanical performances. In structural applications such as those concerning the seismic and energy retrofitting of existing buildings, the use of high-performance cementitious composites often represents the more cost-effective solution, which allows us to minimize the costs of the intervention and the environmental impact. Eventually, the challenge of enhancing sustainability by raising durability of concrete structures is particularly relevant in those applications where maintenance is particularly expensive and impactful, in terms of both direct intervention costs and indirect costs deriving from downtime. The present Special Issue aims at providing readers with the most recent research results on the aforementioned subjects and further foster a collaboration between the scientific community and the industrial sector on a common commitment towards sustainable concrete constructions.

recycled concrete aggregate --- recycled aggregate concrete --- durability --- freeze-thaw cycles --- mechanical properties --- concrete --- recycled concrete --- recycled aggregate --- shrinkage --- slags --- cement replacement --- existing beams --- retrofitting method --- environmental assessment --- fly ash --- moment–curvature relationship --- precast elements --- basalt --- concrete properties --- recycled natural basalt --- recycled concrete powder --- seismic retrofitting --- multilayer coating --- Steel Fiber Reinforced Mortar --- energy performance of buildings --- point thermal bridges --- thermal behavior in summer --- case study --- prestressed concrete --- prestress losses --- bridges --- flexural strength --- shear strength --- drying and autogenous shrinkage --- creep --- sustainability --- shear bond --- UHPFRC --- push-off test --- tensile bond strength --- concrete overlay --- strengthening --- existing infrastructures --- digital microscopy --- surface roughness --- mortars --- MSWI bottom ash --- pozzolanic activity --- supplementary cementing materials --- water-retaining structures --- aggressive environment --- n/a --- moment-curvature relationship

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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

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This reprint provides an international forum for the presentation and discussion of the latest developments in structural-steel research and its applications. The topics of this reprint include the modelling, testing and practice of steel structures and steel-based composite structures. A total of 17 high-quality, original papers dealing with all aspects of steel-structures research, including modelling, testing, and construction research on material properties, components, assemblages, connection, and structural behaviors, are included for publication.

shear dampers --- steel tube dampers --- low cycle cyclic load --- mechanical properties --- energy dissipation capacity --- data analysis --- artificial neural network (ANN) --- chemical composition of welds --- data augmentation technique --- bolted ball-cylinder joints --- FE analysis --- elevated temperature --- parametric study --- design methods --- steel plate wall --- diagonal stiffener --- torsional stiffness --- elastic buckling --- threshold stiffness --- digital twin --- Dijkstra algorithm --- prestressed steel structure --- material allocation --- intelligent planning --- construction management --- random forest --- influencing factors --- intelligent analysis --- offshore structure --- falling object collision --- similarity law --- scaled test --- finite element analysis --- fracture performance --- SBHS500 --- SM570 --- SM490 --- high strength steel --- notch --- reliability analysis --- ship local structure --- probabilistic simulation --- Kriging model --- Bayesian data fusion --- L-shaped column --- recycled aggregate concrete --- concrete-filled steel tube --- eccentric compression --- finite element model --- suspender --- steel arch bridge --- fatigue life --- overloaded rate --- finite element --- corrugated steel plate shear wall --- damage state --- repair state --- fragility function --- probabilistic assessment --- partially connected steel plate shear wall --- shear strength --- connectivity ratio --- finite element method --- design formula --- pipe-in-pipe system --- global buckling --- the sleeper-distributed buoyancy method --- active control --- pipeline design --- orthotropic steel deck --- crack propagation --- fatigue performance --- arch structure --- stability behavior --- spatial grid arch structure --- stability analysis --- initial imperfections --- nonlinear factors --- ultimate load-carrying capacity --- structural steel --- elevated temperatures --- cooling-down method --- cyclic performance --- skeleton curve --- n/a --- ductile crack --- high-strength steel --- low-stress triaxiality --- modified N-VG model