... of PET particles (0%, 5%, 10% and 15% by sand weight) on the mechanical properties of conventional concrete ( CC ) (target compressive strength f c ′ = 33 MPa) and high-strength concrete ( HSC with 5% microsilica gel + 1% superplasticiser (target f c ′ = 45 MPa...

.... The results showed that a 100% rubber replacement rate reduced the compressive strength by 58.97–80.52%, but significantly enhanced ductility, as evidenced by a 91.49% increase in peak compressive strain. Optimal performance was achieved at a SF dosage of 1–2%, with 1% SF yielding a maximum strength...

... © 2026 Emerald Publishing Limited 2026 Emerald Publishing Limited Licensed re-use rights only anchor bolts aspect ratio axial compression columns composite materials composite structures compressive strength externally bonded (EB) confinement hybrid strengthening near-surface...

... that the composite additive significantly enhanced the self-healing efficiency with a synergistic action. The SAP–CSA combination exhibited the most pronounced effect. Cracks with an initial width of 0.18 mm were completely sealed within 30 days and the compressive strength recovery rate reached up to 116...

.... This paper provides region-specific experimental data using locally sourced FA from Sri Lanka and imported ground granulated blast-furnace slag ( GGBFS ). A control mix (100% OPC ), two binary blends and six ternary blends were tested for compressive strength at 3, 7 and 28 days, along with water...

... evaluated. An assessment of the environmental impacts of the concrete mixtures based on their global warming potential (GWP) was also conducted. Concrete mixtures were produced using a slag-modified PC, with 32 MPa compressive strength grade (CPII E 32, equivalent to ASTM Type I (SM) (ASTM...

...Sher Khan; Muhammad Masood Rafi; Bruno Briseghella; Humberto Varum The influences of concrete compressive strength (f_c), bar diameter (d_b), concrete cover (c) and water/cement ratio (w/c) on the bond behaviour between thermo-mechanically treated...

... with the concept of sustainable development. The effects of the water/binder ratio (w/b), polyvinyl alcohol powder ( PVAP ) content and aggregate size on the compressive strength and water permeability of RA-PPC were studied in this work. Elymus dahuricus Turcz ( EDT ) was planted on the RA-PPC matrix...

... concrete columns compressive strength concrete structures cracks & cracking ductility industrial solid waste utilisation ultimate bearing capacity UN SDG 9: Industry, innovation and infrastructure Hebei Province Higher Education Institutions Special Research Projects CXZX2025032...

... combined with fly ash ( FA ) and ground granulated blast-furnace slag ( GGBS ) as an SCM to replace Portland cement ( PC ) was evaluated. Mortar cubes incorporating 5–30% BRR were tested for compressive strength. The mixes achieving higher 28-day strengths were further analysed using X-ray diffraction...

... replacement at 0%, 15%, 25%, and 35% to evaluate compressive strength, water permeability and chloride resistance of concrete up to 90 days. Rapid chloride-ion penetration and chloride diffusion were assessed using standard chloride permeability tests. The compressive strength of POFA concretes ranged from 90...

... were observed at 5% SF, but higher SF levels reduced these properties. Compressive strength, ravelling resistance and residual strength were positively influenced by SF but reduced with FA alone. Microstructural analysis revealed that both FA and SF promoted secondary calcium silicate hydrate...

... anaerobic digestion cement mortars compressive strength digested sewage sludge material properties mortar straw sustainability waste management Traditional sludge disposal practices include land application, incineration and marine dumping, each of which come with significant environmental...

..., converting its smooth, hydrophobic and unreactive surface into a rough, hydrophilic and reactive one. This modification improved the compatibility of WPE with surrounding cement paste. Mortars containing UFA-coated WPE achieved 26–31% higher compressive strength than those with unmodified WPE . Pore...

... Licensed re-use rights only compressive strength constitutive relations construction experiment finite-element methods shear strength simulation sustainable concrete varying concrete strength Since its inception, concrete has been the most successful and adaptable material used...

...Tarek Hadji; Ahmed Attia The aim of this work was to investigate the volumetric evolution of hardened binary pastes, and the compressive strength and total porosity of binary mortars containing Portland cement ( PC ) and silica fume ( SF ). A series of mortars was produced, including a control mix...

... and compared with those of unheated control samples. Compressive strength was also assessed at elevated temperatures. Microstructural analysis was conducted to investigate the underlying mechanisms of the observed changes. The results showed that elevated temperatures significantly degraded transport...

... that the compressive strength and ductility of the concrete specimens exhibited significant size and slenderness effects. With an increase in the specimen size or slenderness ratio, a ductile-to-brittle transition occurred and the post-peak behaviour shifted from softening to catastrophic failure, which...

... of aggregate action, a model was developed to predict the aggregate size for concrete compressive strength of 42–70 MPa. The proposed model was able to accurately predict the diagonal shear strength with an average of 0.927 and a SD of 0.303 for f_ck = 42–70 MPa. Emerald Publishing Limited...

... pulse velocity) were monitored. The residual compressive strength of the specimens was evaluated after destructive testing, and selected samples were also analysed using X-ray diffraction to understand the microstructure and chemical changes in concrete owing to high-temperature exposure. Although...