Agro-industrial waste utilization in air-cured alkali-activated pavement composites: Properties, micro-structural insights and life cycle impacts

Cleaner Materials, Journal Year: 2024, Volume and Issue: 14, P. 100281 - 100281

Published: Nov. 30, 2024

Language: Английский

Effect of bio-admixture on the properties of cement-slag based sustainable pervious concrete mixes for road infrastructure

Road Materials and Pavement Design, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 25

Published: Dec. 22, 2024

The growing demand for sustainable road infrastructure highlights the importance of pervious concrete in storm-water management. This study explores development cement-slag-based incorporating waste foundry sand (WFS) as a partial replacement (up to 50%) river and coarse aggregates optimised proportions. Additionally, bio-admixture, palm jaggery (PJ), was introduced enhance mechanical performance mixes. Key findings include achieving optimum strength with binder composition 20% slag replacement, 50% WFS 0.2% PJ dosage. permeable mix demonstrated compressive 21.2 MPa, split tensile 1.82 flexural 3.51 MPa permeability 498 mm/min, satisfying set design criteria. Flexural fatigue test results indicated that performed better than other selected research underscores potential bio-admixtures advancing resilient environmentally friendly urban infrastructure.

Language: Английский

Alkali-Activated Permeable Concretes with Agro-Industrial Wastes for a Sustainable Built Environment

Materials, Journal Year: 2024, Volume and Issue: 18(1), P. 87 - 87

Published: Dec. 28, 2024

This research presents a proposal for alkali-activated permeable concrete composites with the use of industrial by-products, including ground granulated blast-furnace slag (GGBS) and waste-foundry sand, as well agro-desecrate product, i.e., sugarcane bagasse ash (SBA). GGBS SBA served binders, crushed granite coarse aggregate sand fine aggregate. The novelty this is in examining influence SBA, combination slag, on fresh- hardened-state properties proposed concretes. Experiments were conducted to optimize percentage based hydraulic conductivity compressive tensile strength after 28 days air curing. hardened density, compaction factor (workability), saturated water absorption also measured all mixes. Furthermore, control optimal mixes subjected evaluate microstructure analysis (EDX, XRD, FESEM) mix containing 100% 0% reference, 10% (with 90% GGBS) used comparative understand its effect composites. results showed positive or acceptable mechanical performance at ratio binders. study aims enhance understanding engineering behavior composites, facilitating rational design pavement systems through effective agro-industrial waste products, thereby conserving ecosystems while meeting requirements.

Language: Английский