Synthesis and exposure of multisource solid waste‐based porous geopolymer composites with hollow Al₂O₃ microspheres

International Journal of Applied Ceramic Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract In this paper, we proposed a method for utilizing multisource solid wastes to create valuable product of porous fly ash/red mud/slag‐based geopolymer composite, combining hydrogen peroxide foaming and hollow Al 2 O 3 microspheres (HAMs). The effects high temperatures (600–1200°C), addition, HAMs on the microstructure characteristics composites were examined. Before exposure, had an amorphous matrix with porosity ranging from 32.5% 75.2% compressive strength between 0.72 22.38 MPa. was improved by fractured spheres, crack deflection, good bond state matrix. After being exposed above 800°C, samples crystallized ceramics improvement. lowest thermal conductivity 0.393 0.248 W/(m·K) before after respectively. This hybrid composite exhibited properties even which provided simple fabricating ceramic used in insulation areas.

Language: Английский

---

Analysis of the Influence of Shell Sand Content on the Performance of Ceramisite Lightweight Aggregate Concrete

Buildings, Journal Year: 2024, Volume and Issue: 14(4), P. 986 - 986

Published: April 2, 2024

This study investigates the impact of varying shell sand replacement rates (0%, 5%, 10%, 15%, 20%, 25%) on properties clay ceramsite lightweight aggregate concrete (CLC) through six experimental groups. Results indicate that a 5% rate yields optimal mechanical and working performance in CLC. Examination specimen failure diagrams, electron microscopy theoretical analysis reveals predominantly influences CLC’s overall by influencing internal pore development formation “bonding defect zone” between cementitious material. also elucidates why arises from ceramic particle fracture.

Language: Английский

---

Axial behavior of concrete cylinders retrofitted with a hybrid system of CFRP textile grid and engineered geopolymer composite

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 91, P. 109536 - 109536

Published: May 8, 2024

Language: Английский

---

Mechanical properties of geopolymer recycled concrete infilled steel tubes with three sectional types

Case Studies in Construction Materials, Journal Year: 2024, Volume and Issue: 21, P. e03473 - e03473

Published: June 30, 2024

The steel tubes with geopolymer recycled concrete (GRC) infill are actively seeking environmentally friendly and low-carbon building materials as alternatives in the process of promoting sustainable development, maximizing use waste resources, reducing consumption natural resources environmental pollution. In this paper, three types tube specimens GRC were proposed, i.e., concrete-filled (GRCFST), double skin (GRCFDST), section (GRCFDSST). These GRC-steel structures tested under axial compressive loading, influence some crucial factors on bearing capacity, ductility strain distribution was considered, such slag content, replacement rate aggregate. experimental results show that can provide effective confinement for thus compensate adverse effect induced by content has less capacities GRCFDSST specimen compared GRCFST GRCFDST due to stronger former. is better than other same parameter conditions. This study, existing literature, provides new insights design recommendations mechanical performance using a filling material.

Language: Английский

---

Geopolymer-based insulated wall incorporating construction and demolition waste: Experimental assessment of thermo-physical behavior

Energy and Buildings, Journal Year: 2024, Volume and Issue: 322, P. 114743 - 114743

Published: Sept. 3, 2024

Language: Английский

---