ENG

Iskanje po repozitoriju

A- | A+ | Natisni

Iskalni niz:	išči po
	išči po
	išči po
	išči po
Vrsta gradiva:	* po starem in bolonjskem študiju
Jezik:
Išči po:
Opcije:	Prikaži samo zadetke s celotnim besedilom
	Ponastavi

1 - 2 / 2

Flexural behavior of adhesively bonded cross-laminated timber-concrete composite (TCC) panel with glass-fiber textile mesh as reinforcement in concrete : experimental studying and numerical simulation
Haoze Chen, Wenzhuo Ma, Bohumil Kasal, Wei Yang, Libo Yan, 2025, izvirni znanstveni članek

Opis: Timber-concrete composite (TCC) structures offer higher stiffness and loading capacity compared to pure timber structures with similar dimensions. A more rigid adhesive interface between concrete and timber offers advantages over conventional connections (e.g., mechanical fasteners and notches) by ensuring strain compatibility between the two materials. Fiber-based textiles, such as alkali-resistant (AR) glass fiber fabric, provide electrochemical corrosion resistance when used as reinforcement in concrete. An innovative composite floor system was introduced in this study, comprising cross-laminated timber (CLT) and reinforced concrete embedded with lightweight AR glass textile reinforcement, rigidly bonded together through epoxy adhesive bonding. A comprehensive investigation on the flexural behavior of this composite structure panel was conducted. Instrumentation, like digital image correlation (DIC) and optical fiber sensors, was employed to record strain distribution and development during four-point bending tests on those panels. A nonlinear numerical model was developed to predict the flexural behavior of the panels using continuum damage evolution for timber, concrete damage plasticity (CDP) model, and cohesive contact behavior between timber layers, considering the non-glue edge in the transverse layer. Experimental results showed that the failure predominantly occurred in the transverse layer of the CLT in the TCC panels. Employing glass fabric reinforcement within the CLT-constituted TCC led to an increase in loading bearing capacity. Numerical simulation indicated that textile reinforcement embedded within TCC's concrete counteracted localized concrete tensile failure, preserving structural integrity, delaying cohesive failure between planks in CLT, and consequently amplifying ultimate loading capacity of TCC structure.
Ključne besede: CLT, TCC, adhesive bonding
Objavljeno v RUP: 23.12.2025; Ogledov: 402; Prenosov: 2
Celotno besedilo (27,93 MB)
Gradivo ima več datotek! Več...

Intensive exploration : the application potential of flax fibre/textiles as reinforcement in cementitious composites
Wenzhuo Ma, Libo Yan, Bohumil Kasal, 2025, pregledni znanstveni članek

Opis: This review offers an intensive exploration of the compatibility between flax fibre and cementitious materials, including the kinetics of alkaline degradation of flax fibre, and the interaction between fibre leaching/degradation and cement hydration. This paper also focuses on in-depth insights into the formation and ageing mechanisms of the interfacial transition zone between flax fibre and the cementitious matrix, and in turn how the ageing mechanisms affect the mechanical properties and long-term durability of flax fibre/textile reinforced cementitious composites. A systematic literature review reveals that flax fibre offers superior alkaline resistance compared to other lignocellulosic fibres due to its high crystalline cellulose and low lignin content. While the rough surface of flax fibre enhances bonding with the cementitious matrix, its hydrophilic nature can increase porosity at the interfacial transition zone and promote fibre mineralisation due to fibre swelling and shrinkage. Flax fibre reinforced cementitious composites show comparable flexural and compressive properties to those reinforced with other fibres, while flax textile excels in improving ductility over other textiles and steel reinforcements. Additionally, flax fibre degrades at higher temperatures than sisal and jute fibres. Despite growing interest in flax fibre/textile reinforcement for cementitious composites, key gaps remain in understanding the kinetic mineralisation process of flax fibre, the effects of the alkaline environment and hydration heat on its degradation, and the impact of its alkaline degradation products on cement hydration. Further research is needed to develop direct pull-out testing methods, explore the thermal/fire behaviour of composite phases encompassing the polymeric coating, and create a sustainability framework that considers ecological impacts, recyclability, and waste management for natural fibre reinforced cementitious composites.
Ključne besede: interfacial transition zone, mechanical properties, aging mechanisms
Objavljeno v RUP: 23.12.2025; Ogledov: 394; Prenosov: 2
Celotno besedilo (14,53 MB)
Gradivo ima več datotek! Več...

Iskanje izvedeno v 0.01 sek.

Na vrh