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Cement and lime currently are the most common binders in building materials. However, alternative materials and methods are needed to overcome the functional limitations and environmental footprint of conventional products. This Special Issue dedicated to “New frontiers in cementitious and lime-based materials and composites” gathers selected reviews and experimental articles that showcase the most recent trends in this multidisciplinary field. Authoritative contributions from all around the world provide important insights into all areas of research related to cementitious and lime-based materials and composites, spanning from structural engineering to geotechnics, including materials science and processing technology. This Topical Collection is intended to foster innovation and help researchers and developers to identify new solutions for a more sustainable and functional built environment.

Technology: general issues --- History of engineering & technology --- durability --- hardened properties --- green composite --- fresh properties --- recycled concrete aggregates --- natural coarse aggregates --- enzyme-induced calcite precipitation --- microbial-induced calcite precipitation --- geotechnical engineering --- geoenvironmental engineering --- precast concrete wall --- interfacial bonding strength --- joint concrete --- interface processing --- washed rough surface --- roughness --- storage time --- cement mortar --- End-of-Life Tyre --- waste --- surface treatment --- compressive strength --- flexural strength --- workability --- fly ash --- freezing shaft sinking --- shaft lining structure --- uneven pressure --- hybrid fiber-reinforced concrete --- crack --- autogenous self-healing --- curing conditions --- supplementary cementitious materials (SCMs) --- GRC-PC --- integrated wall panels --- composite method --- shrinkage properties --- dissipation energy density --- high-strength concrete --- Weibull distribution --- damage mechanics --- constitutive model --- repeated impact --- ACI 544-2R --- high temperatures --- fire --- residual strength --- lime-cement mortar --- air-entrained agent --- heritage conservation --- reconstruction and restoration of historical buildings --- properties --- mechanical --- electrical resistivity --- ecofriendly ternary concrete --- SCBA --- SF --- coastal cemented soil --- nano silica --- iron tailings --- mechanical properties --- microscopic mechanism --- granite dust --- stabilizer --- particle size --- plasticity --- unconfined compression strength --- cement --- lime --- sustainable materials --- fibre-reinforced composite --- recycled aggregates

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Concrete is one of the most widely used construction material in the word today. The research in concrete follows the environment impact, economy, population and advanced technology. This special issue presents the recent numerical study for research in concrete. The research topic includes the finite element analysis, digital concrete, reinforcement technique without rebars and 3D printing.

Technology: general issues --- History of engineering & technology --- cementitious composite --- nano-SiO2 --- PVA fiber --- durability evaluation --- adaptive neuro-fuzzy inference system --- aggregate type --- specimen shape --- specimen size --- compressive strength --- concrete mechanical properties --- concrete composites --- waste metalised polypropylene fibres --- durability --- sulphate and acid attacks --- palm oil fuel ash --- fiber-reinforced concrete --- blast resistance --- lattice discrete particle model-fiber --- damage mode --- contact detonation --- concrete brick --- FGD gypsum --- construction and demolition waste --- oil palm trunks --- sugarcane bagasse ash --- sensitivity analysis --- gene expression programming --- multiple linear and non-linear regression --- green concrete --- concrete-filled steel tube (CFST) --- axial capacity --- genetic engineering programming (GEP) --- Euler’s buckling load --- GEP-based model --- calcium silicate hydrate --- simulation --- concrete --- corrosion inhibitor --- grand canonical Monte Carlo method --- molecular dynamics --- adsorption --- coupled RBSM and solid FEM model --- PBL shear connector --- shear strength --- lateral pressures --- failure mechanism --- bamboo-reinforced concrete (BRC) --- stiffness prediction --- artificial neural network (ANN) --- radioactive waste --- long-term performance --- degradation --- modeling --- finite element analysis --- mechanical properties --- mechanisms --- diffusion --- material properties --- sodium alginate --- basalt fiber --- temperature --- impact resistance --- pre-packed aggregate fibre-reinforced concrete --- strength --- long-term shrinkage --- microstructure --- waste polypropylene fibres --- cohesion --- angle of shear deformation --- Mohr–Coulomb model --- induced tensile strength --- concrete samples --- Brazilian test --- finite element method (FEM) --- artificial neural networks --- confined concrete --- strength model --- FRP --- strain model --- RMSE --- forta fibers --- synthetic fibers --- hybrid fiber reinforced concrete --- constitutive modeling --- uniaxial test --- slump test --- pore structure --- water absorption --- MIP --- fractal dimension --- pore connectivity --- T-shaped reinforced concrete beams --- CFRP --- numerical analysis --- non-destructive test (NDT) --- elastic wave --- air-entrained rubberized concrete --- stress-strain curve --- concrete failure --- damage of material --- effective modulus of elasticity --- effective stress --- hybrid-fiber-reinforced concrete --- shaft lining --- numerical simulation --- orthogonal test --- ultimate capacity --- n/a --- Euler's buckling load --- Mohr-Coulomb model

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Concrete is one of the most widely used construction material in the word today. The research in concrete follows the environment impact, economy, population and advanced technology. This special issue presents the recent numerical study for research in concrete. The research topic includes the finite element analysis, digital concrete, reinforcement technique without rebars and 3D printing.

cementitious composite --- nano-SiO2 --- PVA fiber --- durability evaluation --- adaptive neuro-fuzzy inference system --- aggregate type --- specimen shape --- specimen size --- compressive strength --- concrete mechanical properties --- concrete composites --- waste metalised polypropylene fibres --- durability --- sulphate and acid attacks --- palm oil fuel ash --- fiber-reinforced concrete --- blast resistance --- lattice discrete particle model-fiber --- damage mode --- contact detonation --- concrete brick --- FGD gypsum --- construction and demolition waste --- oil palm trunks --- sugarcane bagasse ash --- sensitivity analysis --- gene expression programming --- multiple linear and non-linear regression --- green concrete --- concrete-filled steel tube (CFST) --- axial capacity --- genetic engineering programming (GEP) --- Euler’s buckling load --- GEP-based model --- calcium silicate hydrate --- simulation --- concrete --- corrosion inhibitor --- grand canonical Monte Carlo method --- molecular dynamics --- adsorption --- coupled RBSM and solid FEM model --- PBL shear connector --- shear strength --- lateral pressures --- failure mechanism --- bamboo-reinforced concrete (BRC) --- stiffness prediction --- artificial neural network (ANN) --- radioactive waste --- long-term performance --- degradation --- modeling --- finite element analysis --- mechanical properties --- mechanisms --- diffusion --- material properties --- sodium alginate --- basalt fiber --- temperature --- impact resistance --- pre-packed aggregate fibre-reinforced concrete --- strength --- long-term shrinkage --- microstructure --- waste polypropylene fibres --- cohesion --- angle of shear deformation --- Mohr–Coulomb model --- induced tensile strength --- concrete samples --- Brazilian test --- finite element method (FEM) --- artificial neural networks --- confined concrete --- strength model --- FRP --- strain model --- RMSE --- forta fibers --- synthetic fibers --- hybrid fiber reinforced concrete --- constitutive modeling --- uniaxial test --- slump test --- pore structure --- water absorption --- MIP --- fractal dimension --- pore connectivity --- T-shaped reinforced concrete beams --- CFRP --- numerical analysis --- non-destructive test (NDT) --- elastic wave --- air-entrained rubberized concrete --- stress-strain curve --- concrete failure --- damage of material --- effective modulus of elasticity --- effective stress --- hybrid-fiber-reinforced concrete --- shaft lining --- numerical simulation --- orthogonal test --- ultimate capacity --- n/a --- Euler's buckling load --- Mohr-Coulomb model

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The fluid flow in fracture porous media plays a significant role in the assessment of deep underground reservoirs, such as through CO2 sequestration, enhanced oil recovery, and geothermal energy development. Many methods have been employed—from laboratory experimentation to theoretical analysis and numerical simulations—and allowed for many useful conclusions. This Special Issue aims to report on the current advances related to this topic. This collection of 58 papers represents a wide variety of topics, including on granite permeability investigation, grouting, coal mining, roadway, and concrete, to name but a few. We sincerely hope that the papers published in this Special Issue will be an invaluable resource for our readers.

deformation feature --- minerals --- microstructure --- mixing --- permeability --- gas concentration --- water–rock interaction --- loose gangue backfill material --- unified pipe-network method --- fracture --- roof-cutting resistance --- crack --- similar-material --- movable fluid --- gob-side entry retaining (GER) --- rock-soil mechanics --- bed separation --- orthogonal tests --- charge separation --- water soaked height --- fluid flow in reclaimed soil --- laboratory experiment --- longwall mining --- grading broken gangue --- MIP --- elastic modulus --- effective stress --- permeability coefficient --- mixer --- naturally fracture --- SEM --- microstructure characteristics --- artificial joint rock --- fractured rock --- strata movement --- conservative solute --- particle velocity --- dry-wet cycles --- hydraulic fractures --- numerical calculation --- mechanical behaviors --- normalized conductivity-influence function --- fractured porous rock mass --- PPCZ --- segmented grouting --- non-aqueous phase liquid --- intelligent torque rheometer --- numerical analysis --- temperature --- unsaturated soil --- uniaxial compressive strength --- mine shaft --- coalbed methane (CBM) --- nonlinear flow in fractured porous media --- similar simulation --- forecasting --- tight sandstones --- oriented perforation --- hydro-mechanical coupling --- constant normal stiffness conditions --- cohesive soils --- layered progressive grouting --- chemical grouts --- grain size of sand --- Darcy’s law --- soft coal masses --- hydro-power --- cyclic heating and cooling --- cohesive element method --- cement-based paste discharge --- tectonically deformed coal --- split grouting --- fault water inrush --- filtration effects --- T-stress --- particle flow modeling --- new cementitious material --- strength --- stabilization --- fractured porous medium --- brine concentration --- initial water contained in sand --- XRD --- fracture criteria --- hydraulic conductivity --- roadway deformation --- backfill mining --- adsorption/desorption properties --- pore pressure --- roughness --- cement–silicate grout --- compressive stress --- discrete element method --- dynamic characteristics --- strain-based percolation model --- thermal-hydrological-chemical interactions --- pore distribution characteristics --- transversely isotropic rocks --- nitric acid modification --- disaster-causing mechanism --- CH4 seepage --- crack distribution characteristics --- micro-CT --- relief excavation --- Darcy flow --- hydraulic fracturing --- mixed-form formulation --- propagation --- scanning electron microscope (SEM) images --- propagation pattern --- consolidation process --- rheological deformation --- gas adsorption --- soft filling medium --- ground pressure --- orthogonal ratio test --- rock fracture --- coal seams --- high-steep slope --- interface --- orthogonal test --- stress interference --- physical and mechanical parameters --- fracture propagation --- fluid–solid coupling theory --- coupling model --- surface characteristics --- numerical manifold method --- gas --- lignite --- water inrush prevention --- coupled THM model --- hard and thick magmatic rocks --- Ordos Basin --- porosity --- damage mechanics --- seepage --- degradation mechanism --- high temperature --- visualization system --- bentonite-sand mixtures --- contamination --- conductivity-influence function --- water-rock interaction --- deterioration --- seepage pressure --- glutenite --- adhesion efficiency --- mechanical behavior transition --- bedding plane orientation --- n/a --- enhanced gas recovery --- debris-resisting barriers --- reinforcement mechanism --- on-site monitoring --- geophysical prospecting --- cyclic wetting-drying --- scoops3D --- semi-analytical solution --- enhanced permeability --- management period --- seepage control --- deformation --- Yellow River Embankment --- impeded drainage boundary --- rheological test --- circular closed reservoir --- grout penetration --- viscoelastic fluid --- coal-like material --- paste-like slurry --- floor failure depth --- supercritical CO2 --- gravel --- numerical model --- fractal --- gas-bearing coal --- shear-flow coupled test --- rheological limit strain --- CO2 flooding --- flotation --- goaf --- slope stability --- damage --- coal and gas outburst --- hydraulic fracture --- anisotropy --- high-order --- effluents --- FLAC --- limestone roof --- sandstone --- TG/DTG --- Xinjiang --- two-phase flow --- model experiment --- coal particle --- volumetric strain --- failure mode --- land reclamation --- sandstone and mudstone particles --- contiguous seams --- CO2 geological storage --- numerical simulation --- geogrid --- stress relief --- optimum proportioning --- roadside backfill body (RBB) --- pervious concrete --- mudstone --- hydraulic fracture network --- grouted sand --- fractal pore characteristics --- refraction law --- segmented rheological model --- ductile failure --- heterogeneity --- flow law --- fracture closure --- coal measures sandstone --- tight sandstone gas reservoirs --- gob behaviors --- water-dripping roadway --- creep characteristics --- internal erosion --- warning levels of fault water inrush --- hydraulic aperture --- bolt support --- discontinuous natural fracture --- microscopic morphology --- critical hydraulic gradient --- mixed mode fracture resistance --- differential settlement --- alternate strata --- finite element method --- crushing ratio --- chloride --- glauberite cavern for storing oil &amp --- macroscopic mechanical behaviors --- collision angle --- adsorption performance --- failure mechanism --- mechanical properties --- transmissivity --- damage evolution --- gas fracturing --- multitude parameters --- deviatoric stress --- Jiaohe --- coal --- soil properties --- acoustic emission --- pore structure --- grouting experiment --- concrete --- confining pressures --- green mining --- gas drainage --- fluid viscosity --- compression deformation --- Unsaturation --- adsorption–desorption --- seepage-creep --- constitutive model --- soil particle size --- Pseudo Steady-State (PPS) constant --- soil–structure interface --- debris flow --- fracture grouting --- initial settlement position --- regression equation --- electrical potential --- secondary fracture --- surrounding rock --- solid backfill coal mining --- time variation --- excess pore-pressures --- finite-conductivity fracture --- permeability characteristics --- rainfall-unstable soil coupling mechanism(R-USCM) --- shaft lining --- Darcy's law --- cement-silicate grout --- fluid-solid coupling theory --- adsorption-desorption --- soil-structure interface